feat(aura-cli, aura-runner): JSON data namespace — info verb, NDJSON list, coverage retired

Reshape the aura data namespace around one principle: every verb emits
JSON, no format flag (the headless-agent posture #264 named).

- aura data info <symbol> (new): one flat JSON object — symbol plus the
  six neutral geometry fields (digits, pipSize, tickSize, lotSize,
  baseAsset, quoteAsset) from DataServer::symbol_meta when the
  <SYMBOL>.meta.json sidecar yields geometry; a symbol is known via bar
  files OR sidecar (a sidecar-only symbol still reports its geometry);
  an unknown symbol refuses with prose, exit 1. description stays out
  until the neutral reader exposes it (data-server#4).
- aura data list: NDJSON — one JSON string per line; an empty archive
  emits zero stdout lines, with the human affordance moved to a stderr
  note in the #278 class vocabulary.
- aura data coverage: retired — #272's per-cell fault isolation subsumed
  the prophylactic pre-run check; aura-runner's data_coverage_report and
  its presentation helpers go with it, while interior_gap_months stays
  as the campaign path's single gap walk (#295).

The three derived design decisions (description omitted, broader
refusal prose, empty-archive stderr notice) are minuted on the issue.

closes #273

Cargo.lock

@@ -160,6 +160,7 @@ dependencies = [
  "aura-core",
  "aura-engine",
  "aura-ingest",
+ "aura-market",
  "aura-measurement",
  "aura-registry",
  "aura-research",
@@ -167,6 +168,7 @@ dependencies = [
  "aura-std",
  "aura-strategy",
  "aura-vocabulary",
+ "chrono-tz",
  "clap",
  "data-server",
  "libc",
@@ -192,6 +194,7 @@ dependencies = [
 name = "aura-core"
 version = "0.1.0"
 dependencies = [
+ "chrono-tz",
  "serde",
  "serde_json",
 ]
@@ -307,8 +310,6 @@ dependencies = [
  "aura-backtest",
  "aura-core",
  "aura-strategy",
- "chrono",
- "chrono-tz",
 ]
 
 [[package]]

README.md

@@ -38,7 +38,7 @@ Invoke it as `aura <command> …` (examples below use the plain name).
 - **Family** — the set of runs one verb produces over a blueprint (a sweep grid,
   a Monte-Carlo seed set, a walk-forward window sequence). Families are persisted
   in a content-addressed store and can be listed, ranked, and reproduced.
-- **Axis** — one named, sweepable knob of a blueprint (e.g. `graph.fast.length`),
+- **Axis** — one named, sweepable knob of a blueprint (e.g. `fast.length`),
   bound with a comma-separated value list. A **gang** fuses several sibling
   knobs into one axis (one value drives all members).
 
@@ -122,7 +122,9 @@ The op kinds are `source`, `input`, `add`, `feed`, `connect`, `expose`, `tap`,
 `gang`, `doc`, and `use` (`tap` declares a recorded measurement point on an
 interior wire; `doc` declares the composite's one-line meaning, required at
 register — C29; `use` splices a registered blueprint in as a nested composite,
-by content id or label; see the authoring guide). See
+by content id or label; `add` additionally takes an `args` object for
+**arg-bearing** types (`Session`, `LinComb`, `CostSum`) — structural,
+non-scalar construction consumed before `bind`; see the authoring guide). See
 `aura graph introspect --node <T>` for a type's exact ports and the op-script
 grammar in the design ledger for the full semantics.
 

crates/aura-bench/baselines/cli_fixed_cost.json

@@ -1,16 +1,16 @@
 {
   "surface": "cli_fixed_cost",
   "metrics": {
-    "help_ms": 1.5046899999999999,
-    "run_ms": 3.63305
+    "help_ms": 1.487171,
+    "run_ms": 3.376192
   },
-  "fingerprint": "run_line_fnv=6bb0d796f760d140",
+  "fingerprint": "run_line_fnv=9bdbc3acf7b2926a",
   "reps": 3,
   "host": {
     "hostname": "Raki",
     "nproc": 24
   },
   "profile": "release",
-  "commit": "9c7f60b",
-  "date": "2026-07-23"
+  "commit": "10570b7",
+  "date": "2026-07-25"
 }

crates/aura-bench/src/surfaces/campaign.rs

@@ -106,9 +106,9 @@ fn seed_blueprint(bin: &Path, dir: &Path, file: &str, name: &str) -> Result<Stri
             "sweep",
             file,
             "--axis",
-            "sma_signal.fast.length=2,4",
+            "fast.length=2,4",
             "--axis",
-            "sma_signal.slow.length=8,16",
+            "slow.length=8,16",
             "--name",
             name,
         ],

crates/aura-cli/Cargo.toml

@@ -65,6 +65,15 @@ zip = "2"
 # (#[cfg(test)] use aura_composites::StopRule in main.rs's ic_tests module),
 # so this rides the same dev-only-edge idiom as `aura-analysis`/`sha2` below.
 aura-composites = { path = "../aura-composites" }
+# aura-market: the shell's own use is test-only (#271's identity-bridge test,
+# `identity_id_bridges_the_rust_configured_session_and_args_script`, needs
+# `Session::configured` as the Rust-authored twin of the args op-script path)
+# — rides the same dev-only-edge idiom as `aura-composites`/`aura-analysis`.
+aura-market = { path = "../aura-market" }
+# chrono-tz: the SAME identity-bridge test needs a `chrono_tz::Tz` to pass
+# `Session::configured` — test-only, pinned to the same version every other
+# crate's chrono-tz entry uses.
+chrono-tz = { version = "0.10", default-features = false }
 # aura-analysis: pearson_corr, used only by the ic_tests unit-test fixtures
 # (mod ic_tests in main.rs) — a test-only edge, not a production one.
 aura-analysis = { path = "../aura-analysis" }

crates/aura-cli/src/graph_construct.rs

@@ -8,9 +8,11 @@ use std::collections::BTreeMap;
 use std::path::Path;
 
 use aura_engine::{
-    blueprint_from_json, blueprint_identity_json, blueprint_to_json, replay, BindOpError,
-    BlueprintDoc, CompileError, Composite, GraphSession, LoadError, Op, OpError, Scalar, ScalarKind,
+    blueprint_from_json, blueprint_identity_json, blueprint_to_json, name_gate, replay, ArgOpError,
+    BindOpError, BlueprintDoc, CompileError, Composite, GraphSession, LoadError, NameGateFault, Op,
+    OpError, Scalar, ScalarKind,
 };
+use aura_runner::runner::render_value;
 use serde::Deserialize;
 
 use crate::research_docs::resolve_id_prefix;
@@ -20,9 +22,10 @@ use crate::research_docs::resolve_id_prefix;
 #[cfg(test)]
 use aura_vocabulary::std_vocabulary;
 
-/// The op-list reference `aura graph build --help` appends (#323): the ten
-/// op kinds with their fields and one worked element each. Lives beside
-/// [`OpDoc`] so a new op variant is one screen away from its help line.
+/// The op-list reference `aura graph build --help` appends (#323): the eleven
+/// op kinds with their fields and one worked element each (#331: `name` joins
+/// the roster, ten -> eleven). Lives beside [`OpDoc`] so a new op variant is
+/// one screen away from its help line.
 pub const OP_REFERENCE: &str = r#"Op-list reference (stdin: a JSON array of op objects, applied in order):
   {"op":"source","role":"price","kind":"F64"}
       declare a bound root input role of a scalar kind
@@ -30,6 +33,9 @@ pub const OP_REFERENCE: &str = r#"Op-list reference (stdin: a JSON array of op o
       declare an open input role (wired by an enclosing graph)
   {"op":"add","type":"SMA","name":"fast","bind":{"length":{"I64":2}}}
       instantiate a node ("name" optional; "bind" maps param -> typed scalar)
+  {"op":"add","type":"Session","name":"ny","args":{"tz":"America/New_York","open":"09:30"},"bind":{"period_minutes":{"I64":15}}}
+      an arg-bearing type applies "args" (closed, per-type-declared string
+      pairs) BEFORE "bind" — see graph introspect --node <T> for its args
   {"op":"feed","role":"price","into":["fast.series","slow.series"]}
       wire a role into one or more input slots
   {"op":"connect","from":"fast.value","to":"sub.lhs"}
@@ -45,6 +51,9 @@ pub const OP_REFERENCE: &str = r#"Op-list reference (stdin: a JSON array of op o
   {"op":"use","ref":{"name":"agree"},"name":"gate","bind":{"sma.length":{"I64":9}}}
       splice a registered blueprint (by "content_id" or "name") under an
       instance name ("bind" path-qualifies the spliced instance's params)
+  {"op":"name","name":"ny_momentum"}
+      set the composite's render name, at most once per script (default
+      "graph" if omitted)
 
 Node types and their ports: aura graph introspect --vocabulary | --node <T>"#;
 
@@ -64,6 +73,12 @@ enum OpDoc {
         // naming, not an aliasing (contrast `expose`'s `as`, which is a real alias).
         #[serde(rename = "name", default)]
         as_name: Option<String>,
+        // Construction args (#271) — the typed, closed channel applied BEFORE
+        // `bind`. A `BTreeMap` (deterministic iteration order into `Op::Add`'s
+        // `Vec`, mirroring `bind`'s own convention) — absent for every
+        // args-free type, so an old-style `add` document is unaffected.
+        #[serde(default)]
+        args: BTreeMap<String, String>,
         #[serde(default)]
         bind: BTreeMap<String, Scalar>,
     },
@@ -100,6 +115,9 @@ enum OpDoc {
         #[serde(default)]
         bind: BTreeMap<String, Scalar>,
     },
+    /// Set the composite's render name (#331) — script-level, at most once;
+    /// the op-script twin of `replay`'s seeded default name (`"graph"`).
+    Name { name: String },
 }
 
 /// A `use` op's reference (#317) — exactly one of a store content id (full
@@ -132,6 +150,7 @@ impl OpDoc {
             OpDoc::Doc { .. } => "doc".to_string(),
             OpDoc::Use { name: Some(n), .. } => format!("use {n:?}"),
             OpDoc::Use { name: None, .. } => "use".to_string(),
+            OpDoc::Name { .. } => "name".to_string(),
         }
     }
 }
@@ -151,9 +170,12 @@ impl From<OpDoc> for Op {
         match d {
             OpDoc::Source { role, kind } => Op::Source { role, kind },
             OpDoc::Input { role } => Op::Input { role },
-            OpDoc::Add { type_id, as_name, bind } => {
-                Op::Add { type_id, as_name, bind: bind.into_iter().collect() }
-            }
+            OpDoc::Add { type_id, as_name, args, bind } => Op::Add {
+                type_id,
+                as_name,
+                args: args.into_iter().collect(),
+                bind: bind.into_iter().collect(),
+            },
             OpDoc::Feed { role, into } => Op::Feed { role, into },
             OpDoc::Connect { from, to } => Op::Connect { from, to },
             OpDoc::Expose { from, as_name } => Op::Expose { from, as_name },
@@ -168,6 +190,25 @@ impl From<OpDoc> for Op {
                 name,
                 bind: bind.into_iter().collect(),
             },
+            OpDoc::Name { name } => Op::Name { name },
+        }
+    }
+}
+
+/// Phrase one `ArgOpError` (#271) as a human cause, WITHOUT the node prefix —
+/// shared by `format_op_error`'s `BadArg` arm (the `add`-op path) and
+/// `blueprint_load_prose`'s `BadArg` arm (the blueprint LOAD path), so the two
+/// error families cannot phrase the same fault differently. Exhaustive over
+/// `ArgOpError`; `BadValue` names the arg, its declared `ArgKind`, AND the
+/// closed per-kind `hint()` line (the same hint `introspect --node` shows).
+fn arg_op_error_prose(err: &ArgOpError) -> String {
+    match err {
+        ArgOpError::NotArgBearing => "takes no construction args".to_string(),
+        ArgOpError::UnknownArg(a) => format!("has no construction arg {a:?}"),
+        ArgOpError::DuplicateArg(a) => format!("was given arg {a:?} more than once"),
+        ArgOpError::MissingArg(a) => format!("is missing required arg {a:?}"),
+        ArgOpError::BadValue { arg, kind, got } => {
+            format!("arg {arg:?} expects {kind:?} ({}) — got {got:?}", kind.hint())
         }
     }
 }
@@ -204,6 +245,7 @@ fn format_op_error(e: &OpError) -> String {
                 format!("cannot bind {node}.{param} — member of gang {gang:?}")
             }
         },
+        OpError::BadArg { node, err } => format!("node {node} {}", arg_op_error_prose(err)),
         OpError::UnconnectedPort { node, slot } => format!("slot {node}.{slot} is unconnected"),
         OpError::RoleKindMismatch { role } => format!("input role {role} fans into slots of differing kinds"),
         OpError::GangKindMismatch { member, expected, got } => {
@@ -224,9 +266,25 @@ fn format_op_error(e: &OpError) -> String {
         OpError::UnknownSubgraph { ref_id } => {
             format!("use: no subgraph for content id {ref_id:?}")
         }
+        OpError::DuplicateName => "a script names its blueprint at most once".to_string(),
+        OpError::BadName { name, fault } => name_gate_fault_prose(name, fault),
     }
 }
 
+/// Phrase a `name_gate` shape violation as prose (#331): shared by this
+/// module's op-intake `format_op_error` `BadName` arm and the
+/// blueprint-envelope intake's root-name gate (`composite_from_authored_text`
+/// below) — the shape rule has exactly one seam-independent cause per fault,
+/// so both data-borne birth routes for a name read identically.
+fn name_gate_fault_prose(name: &str, fault: &NameGateFault) -> String {
+    let cause = match fault {
+        NameGateFault::Empty => "must be non-empty",
+        NameGateFault::ContainsSeparator => "must not contain '/' or '\\'",
+        NameGateFault::DotSegment => "must not be \".\" or \"..\"",
+    };
+    format!("blueprint name {name:?} is invalid: {cause} (a single path segment)")
+}
+
 /// Resolve one `use` op's [`UseRef`] to the full store content id (#317):
 /// verbatim if it already IS a 64-hex content id, else a unique content-id
 /// prefix (#302 semantics, reusing [`resolve_id_prefix`]) or a registry name
@@ -439,6 +497,17 @@ pub fn introspect_node(type_id: &str, env: &aura_runner::project::Env) -> Result
     let schema = builder.schema();
     // C29 (#315): the head line carries the node's one-line meaning.
     let mut out = format!("{} — {}\n", builder.label(), schema.doc);
+    // #271: an arg-bearing (pending) type declares its ArgSpecs but no real
+    // ports/params yet — those form only once `try_args` runs (`make`). Show
+    // the arg rows first (they must be supplied before anything else can be
+    // discovered) plus the one-line note the spec's worked discovery example
+    // pins.
+    for spec in builder.arg_specs() {
+        out.push_str(&format!("  arg    {}: {:?}   ({})\n", spec.name, spec.kind, spec.kind.hint()));
+    }
+    if builder.is_pending() {
+        out.push_str("  note   ports and params form at construction; args are required\n");
+    }
     for port in &schema.inputs {
         out.push_str(&format!("  in   {}:{:?}\n", port.name, port.kind));
     }
@@ -571,10 +640,12 @@ pub fn introspect_cmd(cmd: crate::GraphIntrospectCmd, env: &aura_runner::project
             }
         }
     } else if let Some(target) = cmd.params.as_deref() {
-        // --params <FILE|ID> (#196): the RAW composite param space — exactly the
-        // namespace campaign axes are validated against (`validate_campaign_refs`
-        // checks the raw space; the wrapped `--list-axes` namespace on `aura sweep`
-        // is the sweep-verb view, not the campaign view).
+        // --params <FILE|ID> (#196): the RAW composite param space — the one
+        // namespace campaign axes are validated against
+        // (`validate_campaign_refs`) and `aura sweep --list-axes` prints
+        // (#328: the wrapped `<blueprint>.<node>.<param>` form was retired —
+        // there is exactly one axis namespace now, so the two discovery
+        // surfaces agree line-for-line, see `params_lines`'s own doc comment).
         match params_lines(target, env) {
             Ok(s) => print!("{s}"),
             Err(m) => {
@@ -603,7 +674,7 @@ pub fn introspect_cmd(cmd: crate::GraphIntrospectCmd, env: &aura_runner::project
                         std::process::exit(1);
                     }
                 };
-                match composite_from_any(&text, env) {
+                match composite_from_authored_text(&text, env) {
                     Ok(c) => c,
                     Err(m) => {
                         eprintln!("aura: {m}");
@@ -662,6 +733,7 @@ pub(crate) fn blueprint_load_prose(e: &LoadError) -> String {
         }
         LoadError::UnknownNodeType(t) => format!("unknown node type {t:?}"),
         LoadError::Gang(e) => format!("gang section invalid: {}", gang_fault_prose(e)),
+        LoadError::BadArg(e) => format!("construction args invalid: {}", arg_op_error_prose(e)),
     }
 }
 
@@ -772,6 +844,18 @@ pub(crate) fn blueprint_slot_prose(doc: &str, env: &aura_runner::project::Env) -
 /// envelope (a JSON object: `format_version` + `blueprint`) OR a construction
 /// op-list (a JSON array) — shape-discriminated on the top-level JSON type,
 /// each canonicalized by its own rules.
+///
+/// **Ungated by design (#331 review finding).** This is the STORE READ-BACK
+/// shape: `params_lines`'s content-id fetch (`resolve_blueprint_text`'s
+/// non-file branch) — `introspect --params <ID>` and, by the same
+/// convention, `validate_campaign_refs`'s already-ungated `blueprint_from_json`
+/// call — reads whatever is already sitting in the store, and C29 says a
+/// registered artifact is never retroactively invalidated. Freshly authored
+/// FILE text (a hand-edited document that has not yet passed through a gated
+/// intake) goes through [`composite_from_authored_text`] instead, never here
+/// — `params_lines`'s OWN file branch is such a case (#331 delta re-review:
+/// it used to call straight through to this fn, missing the gate; fixed by
+/// branching on `resolve_blueprint_text`'s file-vs-store flag).
 pub(crate) fn composite_from_any(text: &str, env: &aura_runner::project::Env) -> Result<Composite, String> {
     let value: serde_json::Value =
         serde_json::from_str(text).map_err(|e| format!("invalid document: {e}"))?;
@@ -789,12 +873,86 @@ pub(crate) fn composite_from_any(text: &str, env: &aura_runner::project::Env) ->
     }
 }
 
+/// The FILE-intake counterpart of [`composite_from_any`] (#331 review
+/// finding): identical parse, plus the blueprint-envelope root-name shape
+/// gate. Every call site that builds a `Composite` from text freshly read
+/// off disk (`graph register`, `graph introspect --content-id <FILE>`, the
+/// bare `aura graph <FILE>` viewer, and `graph introspect --params <FILE>`'s
+/// file branch) goes through this wrapper — never the ungated
+/// `composite_from_any` — because a hand-edited envelope with
+/// `"name":"../x"` would otherwise register/build cleanly and write
+/// `traces/../x/` at run time (`trace_store.rs` joins the name unsanitized).
+/// Gating the composite's name unconditionally (not just on the Object
+/// branch) is harmless: an op-script-built composite's name already passed
+/// the op-intake gate (`GraphSession::set_name`), so re-checking it here is
+/// redundant, not restrictive — it keeps this wrapper a single shared choke
+/// point rather than one that has to re-discriminate the JSON shape. Only
+/// the ROOT name is checked: the filesystem seam consumes exclusively the
+/// root name. Store read-back (reproduce, `use`-splice resolution from the
+/// registry, and `params_lines`'s content-id branch) never reaches this
+/// function — C29's "registered artifacts are never retroactively
+/// invalidated" stays intact.
+///
+/// **Deliberate exceptions — direct `gate_authored_root_name` callers
+/// (main.rs).** A handful of fresh-FILE intakes reach the same unsanitized
+/// `traces/<name>/` seam (or `put_blueprint` the loaded envelope straight
+/// into the registry) without going through this wrapper, because each
+/// already parses the document its own way and only needs the shared root-
+/// name gate bolted on, not the shape-discrimination `composite_from_any`
+/// does:
+/// - `aura run <blueprint.json>` (`dispatch_run`): envelope-only grammar (no
+///   op-script fallback), feeds `signal.name()` into
+///   `run_signal_r`/`run_measurement` -> `bind_tap_plan` ->
+///   `TraceStore::begin_run`.
+/// - `validate_and_register_axes` (shared by `generalize`,
+///   `sweep --real`, `walkforward --real`, `mc --real`): `put_blueprint`s
+///   the loaded envelope by topology hash before any of those four verbs
+///   touches an archive.
+/// - `run_blueprint_sweep` / `run_blueprint_walkforward` / `run_blueprint_mc`
+///   (the synthetic, no-`--real` family builders): same `put_blueprint`
+///   reason, on the routes that bypass `validate_and_register_axes`
+///   entirely (#331 cycle-close — these used to plant an ungated envelope
+///   in the store; see each fn's own comment).
+/// - `list_blueprint_axes` (`aura sweep <FILE> --list-axes`, main.rs): no
+///   registry write and no trace directory here, but a shape-violating root
+///   name otherwise mangles through `wrapped_to_raw_axis` into a printed,
+///   non-bindable axis name instead of refusing (#331 fieldtest finding
+///   c331_2e) — the class rule is every CLI intake reading an authored
+///   envelope from a file gates the root name, not only the writing ones.
+///
+/// All of these share the identical `name_gate` + `name_gate_fault_prose`
+/// primitives this wrapper uses, so the refusal wording is byte-identical
+/// across every authored-file-intake route even though the shape-
+/// discrimination step is not shared by them.
+pub(crate) fn composite_from_authored_text(
+    text: &str,
+    env: &aura_runner::project::Env,
+) -> Result<Composite, String> {
+    let composite = composite_from_any(text, env)?;
+    gate_authored_root_name(composite.name())?;
+    Ok(composite)
+}
+
+/// The root-name shape gate itself (#331 delta re-review), factored out of
+/// [`composite_from_authored_text`] so `dispatch_run`'s narrower-grammar file
+/// intake (see that fn's doc comment) can share the exact `name_gate` call and
+/// `name_gate_fault_prose` wording without going through the shape-discriminating
+/// wrapper.
+pub(crate) fn gate_authored_root_name(name: &str) -> Result<(), String> {
+    name_gate(name).map_err(|fault| name_gate_fault_prose(name, &fault))
+}
+
 /// Resolve a blueprint document's bytes from a file path or a 64-hex content
 /// id in the project store (the campaign-run target-addressing convention).
 /// The id shape is `aura_runner::axes::is_content_id` — the same predicate
 /// `campaign run`'s target resolution uses, so the two FILE-or-id surfaces
-/// cannot drift apart on what counts as a store address.
-fn resolve_blueprint_text(target: &str, env: &aura_runner::project::Env) -> Result<String, String> {
+/// cannot drift apart on what counts as a store address. The `bool` names
+/// which branch fired: `true` for a FRESH FILE read, `false` for a STORE
+/// (content-id) fetch — `params_lines` (#331 delta re-review) uses it to
+/// decide whether the root-name gate applies (a fresh file must gate; a
+/// store read-back must not, C29) without re-deriving the FILE-vs-id
+/// distinction a second time.
+fn resolve_blueprint_text(target: &str, env: &aura_runner::project::Env) -> Result<(String, bool), String> {
     // A CLI arg tolerates the `content:` display prefix (#194); doc ref
     // fields stay bare-only.
     let target = target
@@ -804,11 +962,12 @@ fn resolve_blueprint_text(target: &str, env: &aura_runner::project::Env) -> Resu
     let path = Path::new(target);
     if path.is_file() {
         return std::fs::read_to_string(path)
+            .map(|text| (text, true))
             .map_err(|e| format!("cannot read {}: {e}", path.display()));
     }
     if aura_runner::axes::is_content_id(target) {
         return match env.registry().get_blueprint(target) {
-            Ok(Some(json)) => Ok(json),
+            Ok(Some(json)) => Ok((json, false)),
             Ok(None) => Err(format!("no blueprint {target} in the project store")),
             Err(e) => Err(e.to_string()),
         };
@@ -820,17 +979,28 @@ fn resolve_blueprint_text(target: &str, env: &aura_runner::project::Env) -> Resu
 /// line per open param of the RAW composite (no harness wrap) — the
 /// campaign-axis namespace `validate_campaign_refs` checks axes against. The
 /// kind renders via `ScalarKind`'s `Debug` (`I64`/`F64`/`Bool`/`Timestamp`),
-/// the same form `introspect --node` already uses for param kinds.
+/// the same form `introspect --node` already uses for param kinds. Followed
+/// by one `{name}:{kind:?} default={value}` line per BOUND param (#328):
+/// `bound_param_space()`'s names are already RAW (#203), so no blueprint-name
+/// concatenation is needed — line-identical to the reconciled `--list-axes`
+/// bound pass (`list_blueprint_axes`, main.rs), same `render_value` lexicon.
+/// #331 delta re-review: the FILE target is a FOURTH freshly-authored-file
+/// intake this fn's own `composite_from_any` call had missed gating — a FILE
+/// routes through [`composite_from_authored_text`] instead; a content id
+/// (STORE read-back) keeps the ungated `composite_from_any` (C29).
 fn params_lines(target: &str, env: &aura_runner::project::Env) -> Result<String, String> {
     use std::fmt::Write as _;
-    let text = resolve_blueprint_text(target, env)?;
+    let (text, is_file) = resolve_blueprint_text(target, env)?;
     // Shape-discriminated like file-mode --content-id: an op-script (array)
     // builds through the one-build tail, an envelope (object) loads (#202).
-    let composite = composite_from_any(&text, env)?;
+    let composite = if is_file { composite_from_authored_text(&text, env)? } else { composite_from_any(&text, env)? };
     let mut out = String::new();
     for p in composite.param_space() {
         let _ = writeln!(out, "{}:{:?}", p.name, p.kind);
     }
+    for b in composite.bound_param_space() {
+        let _ = writeln!(out, "{}:{:?} default={}", b.name, b.kind, render_value(&b.value));
+    }
     Ok(out)
 }
 
@@ -864,7 +1034,9 @@ fn register_blueprint(
         .map_err(|e| format!("cannot read {}: {e}", file.display()))?;
     // Shape-discriminated like file-mode --content-id (#202): either shape
     // canonicalizes to the envelope form, so the stored id is shape-invariant.
-    let composite = composite_from_any(&text, env)?;
+    // Gated (#331 review finding): this text is freshly authored FILE bytes,
+    // not a store read-back, so `composite_from_authored_text` applies.
+    let composite = composite_from_authored_text(&text, env)?;
     let canonical = blueprint_to_json(&composite).map_err(|e| format!("serialize error: {e:?}"))?;
     let id = crate::content_id(&canonical);
     let registry = env.registry();

crates/aura-cli/src/main.rs

@@ -45,7 +45,7 @@ use aura_measurement::information_coefficient;
 // `blueprint_axis_probe_reopened` is production code only from `verb_sugar.rs`
 // (a sibling module reaching it via `crate::blueprint_axis_probe_reopened`,
 // the crate-root re-export this `use` gives it), not from this module itself.
-use aura_runner::member::{blueprint_axis_probe, blueprint_axis_probe_reopened, run_signal_r, wrapped_bound_names, RunData};
+use aura_runner::member::{blueprint_axis_probe, blueprint_axis_probe_reopened, run_signal_r, RunData};
 use aura_runner::{TapPlan, TapSubscription};
 #[cfg(test)]
 use aura_runner::member::{run_blueprint_member, wrap_r, SYNTHETIC_PIP_SIZE};
@@ -813,17 +813,81 @@ impl IcReport {
 /// fully closed) — not only the fully-closed case: `--axis`/`override_paths`
 /// accepts a bound name regardless of how many knobs happen to be open
 /// alongside it, so the discovery surface must list it regardless too. Names
-/// are exactly what `--axis` binds.
+/// are RAW `<node>.<param>` paths (#328: the wrapped `<blueprint>.<node>.<param>`
+/// form is retired from the surface) — exactly what `--axis` binds.
+///
+/// **Gated (#331 fieldtest finding).** This is a FRESH-FILE intake exactly like
+/// `register` / `introspect --content-id <FILE>` / `introspect --params <FILE>`
+/// (`composite_from_authored_text`'s doc comment lists the class): a hand-edited
+/// envelope with a shape-violating root name (`"../x"`) must be refused before
+/// any axis line prints, not mangled through `wrapped_to_raw_axis` into a
+/// non-bindable name. Gated immediately after load, before any axis derivation
+/// — same placement discipline as the other sites — at exit 1, matching the
+/// register-route convention (this route never `put_blueprint`s anything,
+/// unlike the exit-2 sweep-EXECUTION route `run_blueprint_sweep` gates).
 fn list_blueprint_axes(doc: &str, env: &aura_runner::project::Env) {
-    let space = blueprint_axis_probe(doc, env).param_space();
-    for p in &space {
-        println!("{}:{:?}", p.name, p.kind); // ScalarKind Debug -> I64/F64/Bool/Timestamp
-    }
     let signal = blueprint_from_json(doc, &|t| env.resolve(t))
         .expect("doc parse-validated at the dispatch boundary");
-    let bp = signal.name().to_string();
+    if let Err(msg) = graph_construct::gate_authored_root_name(signal.name()) {
+        eprintln!("aura: {msg}");
+        std::process::exit(1);
+    }
+    let space = blueprint_axis_probe(doc, env).param_space();
+    for p in &space {
+        // Strip the wrapper's one leading node segment (#328): open names print
+        // RAW, matching `--axis`'s own accepted namespace.
+        println!("{}:{:?}", aura_runner::axes::wrapped_to_raw_axis(&p.name), p.kind); // ScalarKind Debug -> I64/F64/Bool/Timestamp
+    }
     for b in signal.bound_param_space() {
-        println!("{bp}.{}:{:?} default={}", b.name, b.kind, render_value(&b.value));
+        // `bound_param_space()`'s `.name` is already RAW (#203) — no blueprint-name
+        // concatenation (#328: the blueprint name stays out of axis paths, C23).
+        println!("{}:{:?} default={}", b.name, b.kind, render_value(&b.value));
+    }
+}
+
+/// The one-sentence prose for a refused WRAPPED `--axis` name (#328), shared
+/// by both intake routes so the wording carried by `refuse_wrapped_synthetic_axes`
+/// (the synthetic-sweep preflight) and `validate_and_register_axes` (the
+/// real-route/campaign preflight) cannot drift into two copies. Returns the
+/// message WITHOUT the leading `aura: ` — each caller prepends that itself
+/// (the synthetic route via its own `eprintln!`, the real route via
+/// `exit_axis_register_error`'s shared `eprintln!("aura: {m}")`), so the
+/// rendered bytes on both routes stay byte-identical.
+fn wrapped_axis_refusal(n: &str, raw: &str) -> String {
+    format!(
+        "axis \"{n}\": axis names are raw node.param paths — \
+         use \"{raw}\" (the wrapped --list-axes form was retired, #328)"
+    )
+}
+
+/// `--axis` intake preflight for the SYNTHETIC (no `--real`) blueprint-sweep
+/// route (#328): this route bypasses `validate_and_register_axes` entirely (no
+/// project/registry touched), so it needs its own copy of the same WRAPPED-name
+/// refusal — the shared [`aura_runner::axes::classify_axis_intake`] predicate,
+/// intercepting only a `WrappedRetired` hit (echoing the translation pointer,
+/// exit 2, before the sweep ever runs). A name matching neither namespace is
+/// deliberately left unrefused HERE: `blueprint_sweep_family`'s own
+/// `override_paths` rejects it downstream with today's unchanged prose, so this
+/// preflight does not duplicate that message under a second wording.
+fn refuse_wrapped_synthetic_axes(
+    doc: &str,
+    env: &aura_runner::project::Env,
+    axes: &[(String, Vec<Scalar>)],
+) {
+    let wrapped_open = blueprint_axis_probe(doc, env).param_space();
+    let raw_bound: HashSet<String> = blueprint_from_json(doc, &|t| env.resolve(t))
+        .expect("doc parse-validated at the dispatch boundary")
+        .bound_param_space()
+        .into_iter()
+        .map(|b| b.name)
+        .collect();
+    for (n, _) in axes {
+        if let aura_runner::axes::AxisIntake::WrappedRetired(raw) =
+            aura_runner::axes::classify_axis_intake(n, &wrapped_open, &raw_bound)
+        {
+            eprintln!("aura: {}", wrapped_axis_refusal(n, &raw));
+            std::process::exit(2);
+        }
     }
 }
 
@@ -851,6 +915,18 @@ fn run_blueprint_sweep(
     env: &aura_runner::project::Env,
 ) {
     let _ = persist; // reserved for the deferred per-member trace path; the family record below is unconditional
+    // #331 cycle-close: this fn `put_blueprint`s the loaded fresh-FILE
+    // envelope into the registry below — gate the root name up front,
+    // before the family ever builds (a shape-violating name can otherwise
+    // confuse the wrapped/raw axis resolution the family build performs,
+    // producing a misleading unrelated error instead of this refusal; see
+    // `gate_authored_root_name`'s doc comment for the full route list).
+    let blueprint = blueprint_from_json(doc, &|t| env.resolve(t))
+        .expect("doc parse-validated at the dispatch boundary");
+    if let Err(msg) = graph_construct::gate_authored_root_name(blueprint.name()) {
+        eprintln!("aura: {msg}");
+        std::process::exit(2);
+    }
     let family = blueprint_sweep_family(doc, axes, &data, env).unwrap_or_else(|e| {
         eprintln!("aura: {e}");
         std::process::exit(2);
@@ -865,11 +941,7 @@ fn run_blueprint_sweep(
         .topology_hash
         .clone()
         .expect("a blueprint sweep stamps every member's topology_hash");
-    let canonical = blueprint_to_json(
-        &blueprint_from_json(doc, &|t| env.resolve(t))
-            .expect("doc parse-validated at the dispatch boundary"),
-    )
-    .expect("a loaded blueprint re-serializes");
+    let canonical = blueprint_to_json(&blueprint).expect("a loaded blueprint re-serializes");
     reg.put_blueprint(&topo, &canonical).unwrap_or_else(|e| {
         eprintln!("aura: {e}");
         std::process::exit(1);
@@ -897,6 +969,16 @@ fn run_blueprint_walkforward(
     doc: &str, axes: &[(String, Vec<Scalar>)], name: &str, data: DataSource, select: Selection,
     env: &aura_runner::project::Env,
 ) {
+    // #331 cycle-close: this fn `put_blueprint`s the loaded fresh-FILE
+    // envelope into the registry below — gate the root name up front,
+    // before the family ever builds (see `run_blueprint_sweep`'s identical
+    // comment on why this must precede the family build, not just the
+    // registry write).
+    let blueprint = blueprint_from_json(doc, &|t| env.resolve(t)).expect("doc parse-validated at the dispatch boundary");
+    if let Err(msg) = graph_construct::gate_authored_root_name(blueprint.name()) {
+        eprintln!("aura: {msg}");
+        std::process::exit(2);
+    }
     let result = blueprint_walkforward_family(doc, axes, &data, select, env);
     let reg = env.registry();
     let topo = result.windows[0]
@@ -906,10 +988,7 @@ fn run_blueprint_walkforward(
         .topology_hash
         .clone()
         .expect("a blueprint walk-forward stamps every member's topology_hash");
-    let canonical = blueprint_to_json(
-        &blueprint_from_json(doc, &|t| env.resolve(t)).expect("doc parse-validated at the dispatch boundary"),
-    )
-    .expect("a loaded blueprint re-serializes");
+    let canonical = blueprint_to_json(&blueprint).expect("a loaded blueprint re-serializes");
     reg.put_blueprint(&topo, &canonical).unwrap_or_else(|e| { eprintln!("aura: {e}"); std::process::exit(1); });
     let id = match reg.append_family(name, FamilyKind::WalkForward, &walkforward_member_reports(&result)) {
         Ok(id) => id,
@@ -933,6 +1012,17 @@ fn run_blueprint_walkforward(
 /// `FamilyKind::MonteCarlo` family (C18/C21 lineage), and print each draw's member line
 /// (carrying the seed) plus the aggregate — mirroring `run_blueprint_sweep`.
 fn run_blueprint_mc(doc: &str, n_seeds: u64, name: &str, data: DataSource, env: &aura_runner::project::Env) {
+    // #331 cycle-close: this fn `put_blueprint`s the loaded fresh-FILE
+    // envelope into the registry below — gate the root name up front,
+    // before the family ever builds (see `run_blueprint_sweep`'s identical
+    // comment on why this must precede the family build, not just the
+    // registry write).
+    let blueprint = blueprint_from_json(doc, &|t| env.resolve(t))
+        .expect("doc parse-validated at the dispatch boundary");
+    if let Err(msg) = graph_construct::gate_authored_root_name(blueprint.name()) {
+        eprintln!("aura: {msg}");
+        std::process::exit(2);
+    }
     let family = blueprint_mc_family(doc, n_seeds, &data, env).unwrap_or_else(|e| {
         eprintln!("aura: {e}");
         std::process::exit(2);
@@ -945,11 +1035,7 @@ fn run_blueprint_mc(doc: &str, n_seeds: u64, name: &str, data: DataSource, env:
         .topology_hash
         .clone()
         .expect("a blueprint mc stamps every member's topology_hash");
-    let canonical = blueprint_to_json(
-        &blueprint_from_json(doc, &|t| env.resolve(t))
-            .expect("doc parse-validated at the dispatch boundary"),
-    )
-    .expect("a loaded blueprint re-serializes");
+    let canonical = blueprint_to_json(&blueprint).expect("a loaded blueprint re-serializes");
     reg.put_blueprint(&topo, &canonical).unwrap_or_else(|e| {
         eprintln!("aura: {e}");
         std::process::exit(1);
@@ -1172,15 +1258,15 @@ struct DataCmd {
 
 #[derive(Subcommand)]
 enum DataCommand {
-    /// Report a symbol's monthly file-index coverage (span + interior gaps).
-    Coverage(DataCoverageCmd),
-    /// List the archive's known symbols, sorted, one per line.
+    /// Print a symbol's recorded geometry as one flat JSON object.
+    Info(DataInfoCmd),
+    /// List the archive's known symbols as NDJSON, sorted, one per line.
     List,
 }
 
 #[derive(Args)]
-struct DataCoverageCmd {
-    /// The symbol to inventory (e.g. `GER40`).
+struct DataInfoCmd {
+    /// The symbol to inspect (e.g. `GER40`).
     symbol: String,
 }
 
@@ -1649,26 +1735,35 @@ fn parse_axes(
     Ok(axes)
 }
 
-/// The three distinguishable ways `validate_and_register_axes` can fail: an
-/// unknown axis name is a usage error (exit 2, echoed before the archive is
-/// touched); a registry write failure is a runtime error (exit 1); running
-/// outside a project (no `Aura.toml` found up from cwd, #218's gate) is also
-/// a runtime error (exit 1) — the strategy document cannot resolve against a
-/// project store/vocabulary that doesn't exist.
+/// The four distinguishable ways `validate_and_register_axes` can fail: a
+/// shape-violating root name is a usage error (exit 2, echoed before the
+/// blueprint ever reaches the registry — #331 cycle-close: this fn
+/// `put_blueprint`s a fresh-FILE envelope and so must gate it exactly like
+/// `register`/`run`/the other authored-file intakes, see
+/// `gate_authored_root_name`'s doc comment); an unknown axis name is a usage
+/// error (exit 2, echoed before the archive is touched); a registry write
+/// failure is a runtime error (exit 1); running outside a project (no
+/// `Aura.toml` found up from cwd, #218's gate) is also a runtime error —
+/// exit 1, since the strategy document cannot resolve against a project
+/// store/vocabulary that doesn't exist.
 enum AxisRegisterError {
+    BadName(String),
     UnknownAxis(String),
     Registry(String),
     NoProject(String),
 }
 
-/// Validate every `--axis` name against the blueprint's WRAPPED probe namespace
-/// (`blueprint_axis_probe`/`--list-axes`) — an axis naming a BOUND param (#246:
-/// re-openable, same as every already-open knob) passes exactly like an open
-/// one; only a name matching NEITHER space is refused — then canonicalize +
-/// register the blueprint by topology hash and strip every axis name to the RAW
-/// campaign namespace (the sweep sequence, #210 c0110). A raw-form or
-/// fat-fingered axis name is refused here, echoing exactly what the user typed,
-/// before the archive is touched or the blueprint is registered — shared by
+/// Validate every `--axis` name against the RAW campaign-axis namespace only
+/// (#328: `--list-axes`'s own namespace, open-or-bound) — a WRAPPED name (the
+/// retired `<blueprint>.<node>.<param>` form) is refused with a translation
+/// pointer to its raw candidate; a name in neither namespace gets today's
+/// unmatched-axis prose, unchanged. [`aura_runner::axes::classify_axis_intake`]
+/// is the shared predicate (deliberately not `raw_matches_wrapped`, whose own
+/// equality branch would silently accept a wrapped name — see its doc
+/// comment). Then canonicalize + register the blueprint by topology hash — no
+/// further strip: the axes are already raw by the time this returns them (the
+/// old wrapped->raw strip is gone, since a splice path's own dots, e.g.
+/// `anchor.sess.period_minutes`, must not be mangled a second time). Shared by
 /// every campaign-path dispatcher (sweep/generalize/walkforward/mc all landed
 /// the identical block; #220 slice-1 deferred this dedup to "once wf/mc land
 /// the same block", rule-of-three now exceeded 4x). The override set itself is
@@ -1682,17 +1777,28 @@ fn validate_and_register_axes(
     axes: &[(String, Vec<Scalar>)],
     env: &aura_runner::project::Env,
 ) -> Result<(String, Vec<(String, Vec<Scalar>)>), AxisRegisterError> {
-    let space = blueprint_axis_probe(doc, env).param_space();
+    let wrapped_open = blueprint_axis_probe(doc, env).param_space();
     let blueprint = blueprint_from_json(doc, &|t| env.resolve(t))
         .expect("doc parse-validated at the dispatch boundary");
-    let bound = wrapped_bound_names(&blueprint);
+    // #331 cycle-close: this fn `put_blueprint`s a fresh-FILE envelope below —
+    // gate the root name before it lands in the registry (shared choke point
+    // with every other authored-file intake).
+    graph_construct::gate_authored_root_name(blueprint.name()).map_err(AxisRegisterError::BadName)?;
+    let raw_bound: HashSet<String> =
+        blueprint.bound_param_space().into_iter().map(|b| b.name).collect();
     for (n, _) in axes {
-        if !space.iter().any(|p| &p.name == n) && !bound.contains(n) {
-            return Err(AxisRegisterError::UnknownAxis(format!(
-                "axis \"{n}\" is not one of this blueprint's \
-                 sweepable axes — run 'aura sweep <bp> --list-axes' \
-                 to see them"
-            )));
+        match aura_runner::axes::classify_axis_intake(n, &wrapped_open, &raw_bound) {
+            aura_runner::axes::AxisIntake::Raw => {}
+            aura_runner::axes::AxisIntake::WrappedRetired(raw) => {
+                return Err(AxisRegisterError::UnknownAxis(wrapped_axis_refusal(n, &raw)));
+            }
+            aura_runner::axes::AxisIntake::Unknown => {
+                return Err(AxisRegisterError::UnknownAxis(format!(
+                    "axis \"{n}\" is not one of this blueprint's \
+                     sweepable axes — run 'aura sweep <bp> --list-axes' \
+                     to see them"
+                )));
+            }
         }
     }
     if env.provenance().is_none() {
@@ -1709,20 +1815,21 @@ fn validate_and_register_axes(
     let topo = topology_hash(&blueprint);
     reg.put_blueprint(&topo, &canonical)
         .map_err(|e| AxisRegisterError::Registry(e.to_string()))?;
-    let raw_axes: Vec<(String, Vec<Scalar>)> = axes
-        .iter()
-        .map(|(n, v)| (aura_runner::axes::wrapped_to_raw_axis(n).to_string(), v.clone()))
-        .collect();
-    Ok((canonical, raw_axes))
+    Ok((canonical, axes.to_vec()))
 }
 
 /// Exit-map for a `validate_and_register_axes` failure — the stderr line and
 /// exit code every campaign dispatcher (sweep/generalize/walkforward/mc)
-/// preserves: an unknown axis is a usage error (exit 2, echoed before the
-/// archive is touched); a registry write failure or a missing project (no
-/// `Aura.toml` found up from cwd, #218's gate) is a runtime error (exit 1).
+/// preserves: a shape-violating root name (#331) or an unknown axis is a
+/// usage error (exit 2, echoed before the archive is touched); a registry
+/// write failure or a missing project (no `Aura.toml` found up from cwd,
+/// #218's gate) is a runtime error (exit 1).
 fn exit_axis_register_error(e: AxisRegisterError) -> ! {
     match e {
+        AxisRegisterError::BadName(m) => {
+            eprintln!("aura: {m}");
+            std::process::exit(2)
+        }
         AxisRegisterError::UnknownAxis(m) => {
             eprintln!("aura: {m}");
             std::process::exit(2)
@@ -1828,6 +1935,19 @@ fn dispatch_run(a: RunCmd, env: &aura_runner::project::Env) {
                 eprintln!("aura: {path}: {msg}");
                 std::process::exit(2);
             });
+            // #331 delta re-review: this is the third freshly-authored-FILE
+            // intake (`register`, `introspect --content-id <FILE>`, and this
+            // one) that must gate the root name before it ever reaches the
+            // filesystem — both run arms below feed `signal.name()` straight
+            // into `bind_tap_plan`'s `TraceStore::begin_run`, which joins it
+            // unsanitized (`trace_store.rs`). Not routed through
+            // `composite_from_authored_text` itself (see that fn's doc
+            // comment on why); same `name_gate`/`name_gate_fault_prose`
+            // primitives, this arm's own load-error exit/prose convention.
+            if let Err(msg) = graph_construct::gate_authored_root_name(signal.name()) {
+                eprintln!("aura: {path}: {msg}");
+                std::process::exit(2);
+            }
             // Shape dispatch (C28 phase 3): a `bias` output → the strategy path
             // (wrap_r + R evaluation), byte-identical; else ≥1 declared tap → a
             // bare measurement run (no wrap_r); else an inert blueprint → refuse.
@@ -1925,7 +2045,7 @@ fn dispatch_graph(a: GraphCmd, env: &aura_runner::project::Env) {
                     eprintln!("aura: {path}: {e}");
                     std::process::exit(2);
                 });
-                let bp = graph_construct::composite_from_any(&doc, env).unwrap_or_else(|msg| {
+                let bp = graph_construct::composite_from_authored_text(&doc, env).unwrap_or_else(|msg| {
                     eprintln!("aura: {path}: {msg}");
                     std::process::exit(2);
                 });
@@ -2160,7 +2280,7 @@ fn dispatch_nodes_new(a: NodesNewCmd) {
 
 fn dispatch_data(cmd: DataCmd, env: &aura_runner::project::Env) {
     match cmd.command {
-        DataCommand::Coverage(a) => dispatch_data_coverage(a, env),
+        DataCommand::Info(a) => dispatch_data_info(a, env),
         DataCommand::List => dispatch_data_list(env),
     }
 }
@@ -2205,57 +2325,116 @@ fn dispatch_measure_ic(a: MeasureIcCmd, env: &aura_runner::project::Env) {
     println!("{}", report.to_json());
 }
 
-/// `aura data list` (#264 cut 2): print the archive's known symbols, sorted
-/// ascending, one per line — the discovery step before `aura data coverage`
-/// or scoping a campaign's instrument matrix. Resolves the archive root
-/// through the normal project path ([`dispatch_data_coverage`]'s
-/// `Env::data_path`), then reuses `DataServer`'s own symbol index
-/// (`DataServer::symbols()`, already sorted) rather than re-deriving a
-/// directory scan. An empty or absent archive is informational absence, not a
-/// fault: a `no symbols` prose line, exit 0 (the verb corpus's established
-/// empty-result register — cf. `runs family`'s unknown-id empty exit 0).
+/// `aura data list` (#273: the namespace-wide NDJSON reshape): print the
+/// archive's known symbols as NDJSON, sorted ascending, one JSON string per
+/// line — the discovery step before `aura data info <symbol>` or scoping a
+/// campaign's instrument matrix. Resolves the archive root through the normal
+/// project path (`Env::data_path`), then reuses `DataServer`'s own symbol
+/// index (`DataServer::symbols()`, already sorted) rather than re-deriving a
+/// directory scan. An empty or absent archive prints zero stdout lines — the
+/// honest NDJSON of an empty set, since a placeholder prose line would break
+/// `| jq`-style consumption; the human affordance moves to a
+/// `crate::diag::note!` stderr notice instead (#273 design minutes,
+/// 2026-07-25).
 fn dispatch_data_list(env: &aura_runner::project::Env) {
     let data_path = std::path::PathBuf::from(env.data_path());
     let server = aura_ingest::DataServer::new(&data_path);
-    for line in data_list_report(&server.symbols()) {
+    let report = data_list_report(&server.symbols());
+    if report.is_empty() {
+        crate::diag::note!("no symbols in the archive");
+        return;
+    }
+    for line in report {
         println!("{line}");
     }
 }
 
 /// Pure: render `symbols` (already sorted by `DataServer::symbols()`) as one
-/// line per symbol, or a single `no symbols` line when the archive is empty
-/// or absent — informational absence, never a fault (#264).
+/// JSON-string line per symbol (`serde_json::to_string`, so `SYMA` becomes the
+/// quoted `"SYMA"` NDJSON line) — an empty archive yields an empty `Vec`,
+/// never a placeholder line, so stdout stays pure NDJSON either way (#273).
 fn data_list_report(symbols: &[std::sync::Arc<str>]) -> Vec<String> {
-    if symbols.is_empty() {
-        return vec!["no symbols".to_string()];
-    }
-    symbols.iter().map(|s| s.to_string()).collect()
+    symbols
+        .iter()
+        .map(|s| serde_json::to_string(s.as_ref()).expect("a symbol string always serializes"))
+        .collect()
 }
 
-/// `aura data coverage <SYMBOL>` (#264 cut 1): print the archive's month
-/// coverage for `SYMBOL` — the Copper failure mode (files present at both
-/// ends of a window while an interior month is missing, so a first/last-bounds
-/// check passes but a campaign run aborts mid-window) made visible up front.
-/// Resolves the archive root through the normal project path (`Env::data_path`
-/// — a project-local `[paths] data` override when set, the data-server default
-/// otherwise), so a project-scoped archive is inventoried, not the host one.
-fn dispatch_data_coverage(a: DataCoverageCmd, env: &aura_runner::project::Env) {
+/// `aura data info <SYMBOL>` (#273): print a symbol's recorded geometry as one
+/// flat JSON object — the machine-readable follow-up to `aura data list`'s
+/// discovery pass, surfacing `DataServer::symbol_meta`'s neutral,
+/// broker-agnostic geometry (digits / pip / tick / lot sizing, base / quote
+/// asset) without a human ever opening the `<SYMBOL>.meta.json` sidecar by
+/// hand. Resolves the archive root through the normal project path
+/// (`Env::data_path`, same as every other `data` verb). A symbol is KNOWN
+/// when the archive holds bar files for it (`DataServer::has_symbol`) OR it
+/// carries a usable geometry sidecar (`DataServer::symbol_meta`) — a
+/// sidecar-only symbol (bars not yet ingested) still reports its geometry. An
+/// unknown symbol (neither) refuses on stderr, exit 1. Nothing else about the
+/// archive (span, gaps, provider metadata) surfaces here — that was `aura
+/// data coverage`'s job; #272's per-cell fault isolation made it redundant,
+/// so this issue retires it rather than folding it in (#273 design minutes).
+fn dispatch_data_info(a: DataInfoCmd, env: &aura_runner::project::Env) {
     let data_path = std::path::PathBuf::from(env.data_path());
-    let months = aura_ingest::list_m1_months(&data_path, &a.symbol);
-    // The report body is single-sourced with a campaign cell's own coverage
-    // annotation (#295 Task 7: `aura_runner::coverage::interior_gap_months`
-    // is the one gap walk both consumers call).
-    match aura_runner::coverage::data_coverage_report(&a.symbol, &months) {
-        Ok(lines) => {
-            for line in lines {
-                println!("{line}");
-            }
-        }
-        Err(e) => {
-            eprintln!("aura: {e} at {}", env.data_path());
-            std::process::exit(1);
-        }
+    let server = aura_ingest::DataServer::new(&data_path);
+    let geo = server.symbol_meta(&a.symbol);
+    if geo.is_none() && !server.has_symbol(&a.symbol) {
+        eprintln!(
+            "aura: no recorded data for symbol \"{}\" (no archive files, no geometry sidecar)",
+            a.symbol
+        );
+        std::process::exit(1);
     }
+    println!("{}", data_info_report(&a.symbol, geo.as_ref()));
+}
+
+/// One `aura data info` object's shape: `symbol` plus, when a geometry
+/// sidecar was found, its six neutral price-geometry fields — never a
+/// provider-specific field (`generator`, `schemaVersion`, `generatedAtUtc`,
+/// #273 acceptance), since `InstrumentGeometry` never carries one to begin
+/// with. `InstrumentGeometry` itself has no `Serialize` impl, so
+/// [`data_info_report`] copies its fields in here. `rename_all = "camelCase"`
+/// turns `pip_size`/`tick_size`/`lot_size`/`base_asset`/`quote_asset` into the
+/// sidecar's own `pipSize`/`tickSize`/`lotSize`/`baseAsset`/`quoteAsset`
+/// spelling; `#[serde(skip_serializing_if)]` drops the whole geometry tail
+/// when absent rather than emitting `null`s, so a sidecar-less known symbol
+/// reports as bare `{"symbol":"…"}` (#273 design minutes, 2026-07-25:
+/// `description` stays out of this report until the reader exposes it).
+#[derive(serde::Serialize)]
+#[serde(rename_all = "camelCase")]
+struct DataInfoReport {
+    symbol: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    digits: Option<u32>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pip_size: Option<f64>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    tick_size: Option<f64>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    lot_size: Option<f64>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    base_asset: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    quote_asset: Option<String>,
+}
+
+/// Pure: `aura data info <SYMBOL>`'s report body (#273) — one flat JSON
+/// object, field order `symbol`, `digits`, `pipSize`, `tickSize`, `lotSize`,
+/// `baseAsset`, `quoteAsset` (serde's field-declaration order is stable,
+/// unlike `serde_json::Map`'s alphabetical iteration). `geo` is `None` for a
+/// known-but-sidecar-less symbol, in which case every geometry field is
+/// omitted (see [`DataInfoReport`]).
+fn data_info_report(symbol: &str, geo: Option<&aura_ingest::InstrumentGeometry>) -> String {
+    let report = DataInfoReport {
+        symbol: symbol.to_string(),
+        digits: geo.map(|g| g.digits),
+        pip_size: geo.map(|g| g.pip_size),
+        tick_size: geo.map(|g| g.tick_size),
+        lot_size: geo.map(|g| g.lot_size),
+        base_asset: geo.map(|g| g.base.clone()),
+        quote_asset: geo.map(|g| g.quote.clone()),
+    };
+    serde_json::to_string(&report).expect("a finite DataInfoReport always serializes")
 }
 
 /// `aura sweep`: loaded-blueprint by-name axis sweep (or `--list-axes` probe) when the
@@ -2326,8 +2505,8 @@ fn dispatch_sweep(a: SweepCmd, env: &aura_runner::project::Env) {
                     // strategy ref resolves against this one write; a second
                     // put under `content_id_of(&canonical)` would target the
                     // identical key and is not needed.
-                    // Axis validation + canonicalize/register + the wrapped->raw
-                    // strip are single-sourced in `validate_and_register_axes`
+                    // Axis validation (RAW-only, #328) + canonicalize/register are
+                    // single-sourced in `validate_and_register_axes`
                     // (data-free, so this fires before the archive is touched).
                     let (canonical, raw_axes) = validate_and_register_axes("sweep", &doc, &axes, env)
                         .unwrap_or_else(|e| exit_axis_register_error(e));
@@ -2361,6 +2540,10 @@ fn dispatch_sweep(a: SweepCmd, env: &aura_runner::project::Env) {
                         );
                         std::process::exit(2);
                     }
+                    // #328: this route bypasses `validate_and_register_axes` (no
+                    // project/registry involved), so it needs its own WRAPPED-name
+                    // refusal ahead of the sweep.
+                    refuse_wrapped_synthetic_axes(&doc, env, &axes);
                     run_blueprint_sweep(
                         &doc, &axes, &name, persist,
                         DataSource::from_choice(data, env), env,
@@ -2418,8 +2601,8 @@ fn dispatch_walkforward(a: WalkforwardCmd, env: &aura_runner::project::Env) {
                         eprintln!("aura: {m}");
                         std::process::exit(2);
                     });
-                // Axis validation + canonicalize/register + the wrapped->raw
-                // strip are single-sourced in `validate_and_register_axes`
+                // Axis validation (RAW-only, #328) + canonicalize/register are
+                // single-sourced in `validate_and_register_axes`
                 // (data-free, so this fires before the archive is touched).
                 let (canonical, raw_axes) = validate_and_register_axes("walkforward", &doc, &axes, env)
                     .unwrap_or_else(|e| exit_axis_register_error(e));
@@ -2463,10 +2646,11 @@ fn dispatch_walkforward(a: WalkforwardCmd, env: &aura_runner::project::Env) {
                 exit_on_campaign_result(result);
                 return;
             }
-            // Synthetic in-process family path — unchanged (#220 non-goal); it
-            // persists no per-window taps, so `--trace` stays refused here (#224
-            // delivered only the `--real` campaign path above), mirroring
-            // `dispatch_sweep`'s synthetic-arm refusal with its own named pointer.
+            // Synthetic in-process family path (#220 non-goal, unchanged beyond
+            // the #328 tidy below); it persists no per-window taps, so
+            // `--trace` stays refused here (#224 delivered only the `--real`
+            // campaign path above), mirroring `dispatch_sweep`'s synthetic-arm
+            // refusal with its own named pointer.
             if a.trace.is_some() {
                 eprintln!(
                     "aura: --trace is not yet available on a synthetic walkforward (no --real); see #224"
@@ -2485,6 +2669,10 @@ fn dispatch_walkforward(a: WalkforwardCmd, env: &aura_runner::project::Env) {
                 None => Selection::Argmax,
             };
             let name = a.name.clone().unwrap_or_else(|| "walkforward".to_string());
+            // #328: this route bypasses `validate_and_register_axes` (no
+            // project/registry involved, same gap the plain synthetic sweep
+            // arm had) — the same WRAPPED-name preflight closes it here too.
+            refuse_wrapped_synthetic_axes(&doc, env, &axes);
             run_blueprint_walkforward(&doc, &axes, &name, DataSource::Synthetic, select, env);
         }
         None => {
@@ -2532,8 +2720,8 @@ fn dispatch_mc(a: McCmd, env: &aura_runner::project::Env) {
                     eprintln!("aura: {}", usage());
                     std::process::exit(2);
                 }
-                // Axis validation + canonicalize/register + the wrapped->raw
-                // strip are single-sourced in `validate_and_register_axes`
+                // Axis validation (RAW-only, #328) + canonicalize/register are
+                // single-sourced in `validate_and_register_axes`
                 // (data-free, so this fires before the archive is touched).
                 let (canonical, raw_axes) = validate_and_register_axes("mc", &doc, &axes, env)
                     .unwrap_or_else(|e| exit_axis_register_error(e));
@@ -2690,23 +2878,55 @@ mod tests {
     }
 
     /// An empty (or absent) archive is informational absence, not a fault
-    /// (#264): `data_list_report` returns the single `no symbols` prose line
-    /// rather than an empty `Vec`, so the caller's exit-0 println always has
-    /// something to say.
+    /// (#264), but under the all-JSON namespace reshape (#273) stdout must
+    /// stay pure NDJSON: `data_list_report` returns an empty `Vec` rather
+    /// than a placeholder prose line, so the caller has nothing to print and
+    /// moves the human affordance to stderr instead.
     #[test]
-    fn data_list_report_of_an_empty_archive_is_a_no_symbols_line() {
+    fn data_list_report_of_an_empty_archive_is_empty() {
         let symbols: Vec<std::sync::Arc<str>> = vec![];
-        assert_eq!(data_list_report(&symbols), vec!["no symbols".to_string()]);
+        assert_eq!(data_list_report(&symbols), Vec::<String>::new());
     }
 
-    /// A non-empty archive renders one line per symbol, in the order handed
-    /// in (`DataServer::symbols()` already sorts) — no `no symbols` line
-    /// mixed in (#264).
+    /// A non-empty archive renders one NDJSON line per symbol, in the order
+    /// handed in (`DataServer::symbols()` already sorts) — each symbol as a
+    /// quoted JSON string, not a bare name (#273: the NDJSON reshape).
     #[test]
-    fn data_list_report_of_a_populated_archive_is_one_line_per_symbol() {
+    fn data_list_report_of_a_populated_archive_is_one_json_string_per_line() {
         let symbols: Vec<std::sync::Arc<str>> =
             vec![std::sync::Arc::from("SYMA"), std::sync::Arc::from("SYMB")];
-        assert_eq!(data_list_report(&symbols), vec!["SYMA".to_string(), "SYMB".to_string()]);
+        assert_eq!(
+            data_list_report(&symbols),
+            vec!["\"SYMA\"".to_string(), "\"SYMB\"".to_string()]
+        );
+    }
+
+    /// `aura data info`'s report body with a full geometry sidecar present:
+    /// the exact output string, pinning both the field order (`symbol` then
+    /// the six geometry fields, camelCased) and serde_json's own float
+    /// rendering (#273).
+    #[test]
+    fn data_info_report_with_geometry_is_symbol_plus_six_camelcase_fields() {
+        let geo = aura_ingest::InstrumentGeometry {
+            digits: 5,
+            pip_size: 0.0001,
+            tick_size: 1e-05,
+            lot_size: 100_000.0,
+            base: "EUR".to_string(),
+            quote: "USD".to_string(),
+        };
+        assert_eq!(
+            data_info_report("EURUSD", Some(&geo)),
+            r#"{"symbol":"EURUSD","digits":5,"pipSize":0.0001,"tickSize":0.00001,"lotSize":100000.0,"baseAsset":"EUR","quoteAsset":"USD"}"#
+        );
+    }
+
+    /// A known symbol with no geometry sidecar reports bare identity — no
+    /// `null` geometry fields, no provider metadata, just `symbol` (#273:
+    /// "a sidecar-less known symbol yields just `{"symbol":"…"}`").
+    #[test]
+    fn data_info_report_without_geometry_is_bare_symbol() {
+        assert_eq!(data_info_report("SYMX", None), r#"{"symbol":"SYMX"}"#);
     }
 
     /// #234: `campaign_run::persist_campaign_traces`'s C1 drift alarm re-runs a
@@ -3532,11 +3752,11 @@ mod tests {
         let _ = std::fs::remove_dir_all(&dir);
     }
 
-    /// #246: a fully-bound (closed) blueprint IS sweepable — an axis naming a
-    /// bound param re-opens it (the bound value is the default), so the retired
-    /// "fully bound; nothing to sweep" refusal must not resurface. Inverse
-    /// guard: an axis naming NEITHER an open nor a bound param gets the one
-    /// clear boundary message (not a terse `UnknownKnob` debug leak).
+    /// #246/#328: a fully-bound (closed) blueprint IS sweepable — a RAW axis
+    /// naming a bound param re-opens it (the bound value is the default), so
+    /// the retired "fully bound; nothing to sweep" refusal must not resurface.
+    /// Inverse guard: an axis naming NEITHER an open nor a bound param gets
+    /// the one clear boundary message (not a terse `UnknownKnob` debug leak).
     #[test]
     fn blueprint_sweep_family_overrides_a_bound_param_and_names_unknown_axes() {
         let env = aura_runner::project::Env::std();
@@ -3544,9 +3764,9 @@ mod tests {
         let closed = load_closed_r_sma();
         let doc = blueprint_to_json(&closed).expect("serializes");
 
-        // (a) override axis: two members, no refusal
+        // (a) override axis (RAW name, #328): two members, no refusal
         let axes = vec![(
-            "sma_signal.fast.length".to_string(),
+            "fast.length".to_string(),
             vec![Scalar::i64(2), Scalar::i64(4)],
         )];
         let fam = blueprint_sweep_family(&doc, &axes, &DataSource::Synthetic, &env)
@@ -3554,7 +3774,7 @@ mod tests {
         assert_eq!(fam.points.len(), 2);
 
         // (b) unknown axis: the boundary message, no UnknownKnob leak
-        let bad = vec![("sma_signal.nope".to_string(), vec![Scalar::i64(1)])];
+        let bad = vec![("nope".to_string(), vec![Scalar::i64(1)])];
         let err = blueprint_sweep_family(&doc, &bad, &DataSource::Synthetic, &env)
             .expect_err("an axis matching neither space is refused");
         assert!(err.contains("names no param"), "boundary message, got: {err}");
@@ -3562,35 +3782,36 @@ mod tests {
         assert!(!err.contains("UnknownKnob"), "must not leak the debug render: {err}");
     }
 
-    /// #249: an axis-reopened bound param flows through `params` ("what
+    /// #249/#328: an axis-reopened bound param flows through `params` ("what
     /// varied") and must NOT also appear in `defaults` ("what was held") — the
-    /// two are disjoint by construction. Sweeping `fast.length` on the fully
-    /// bound r_sma example leaves `slow.length`/`bias.scale` untouched (they
-    /// stay in `defaults`), while `fast.length` moves to `params` and drops
-    /// out of `defaults` entirely.
+    /// two are disjoint by construction. Sweeping `fast.length` (RAW, #328) on
+    /// the fully bound r_sma example leaves `slow.length`/`bias.scale`
+    /// untouched (they stay in `defaults`), while `fast.length` moves to
+    /// `params` and drops out of `defaults` entirely. Both `manifest.params`
+    /// and `manifest.defaults` keys are RAW (#328, batch 2 flips defaults too).
     #[test]
     fn sweep_override_excludes_the_reopened_default_from_the_manifest() {
         let env = aura_runner::project::Env::std();
         let closed = load_closed_r_sma();
         let doc = blueprint_to_json(&closed).expect("serializes");
-        let axes = vec![("sma_signal.fast.length".to_string(), vec![Scalar::i64(2)])];
+        let axes = vec![("fast.length".to_string(), vec![Scalar::i64(2)])];
         let fam = blueprint_sweep_family(&doc, &axes, &DataSource::Synthetic, &env)
             .expect("a bound param is a default — the axis overrides it");
         assert_eq!(fam.points.len(), 1);
         let manifest = &fam.points[0].report.manifest;
 
         let param_names: Vec<&str> = manifest.params.iter().map(|(n, _)| n.as_str()).collect();
-        assert!(param_names.contains(&"sma_signal.fast.length"), "swept axis is a param: {param_names:?}");
+        assert!(param_names.contains(&"fast.length"), "swept axis is a raw param: {param_names:?}");
 
         let default_names: Vec<&str> = manifest.defaults.iter().map(|(n, _)| n.as_str()).collect();
         assert!(
-            !default_names.contains(&"sma_signal.fast.length"),
+            !default_names.contains(&"fast.length"),
             "the reopened default must not also appear in defaults: {default_names:?}"
         );
         assert_eq!(
             default_names,
-            ["sma_signal.slow.length", "sma_signal.bias.scale"],
-            "the untouched bound params stay in defaults: {default_names:?}"
+            ["slow.length", "bias.scale"],
+            "the untouched bound params stay in defaults, RAW: {default_names:?}"
         );
     }
 
@@ -3809,6 +4030,54 @@ mod tests {
         );
     }
 
+    /// #271 (cross-path identity, extending #171's bridge pattern to an
+    /// arg-bearing type): the Rust-authored `Session::configured` builder and
+    /// its `add`-op `args` twin differ in canonical bytes (debug names) —
+    /// distinct content ids — but project to the same identity JSON, one
+    /// identity id across authoring paths even though the construction
+    /// channel (Rust call vs `args` object) differs.
+    #[test]
+    fn identity_id_bridges_the_rust_configured_session_and_args_script() {
+        use aura_market::Session;
+
+        let rust_built = Composite::new(
+            "sess",
+            vec![Session::configured(9, 30, chrono_tz::Europe::Berlin, 15).into()],
+            vec![],
+            vec![aura_engine::Role {
+                name: "trigger".into(),
+                targets: vec![aura_engine::Target { node: 0, slot: 0 }],
+                source: Some(ScalarKind::F64),
+            }],
+            vec![aura_engine::OutField { node: 0, field: 0, name: "bars".into() }],
+        );
+
+        let doc = r#"[
+            {"op":"source","role":"trigger","kind":"F64"},
+            {"op":"add","type":"Session","name":"sess",
+             "args":{"tz":"Europe/Berlin","open":"09:30"},
+             "bind":{"period_minutes":{"I64":15}}},
+            {"op":"feed","role":"trigger","into":["sess.trigger"]},
+            {"op":"expose","from":"sess.bars_since_open","as":"bars"}
+        ]"#;
+        let env = aura_runner::project::Env::std();
+        let json = crate::graph_construct::build_from_str(doc, &env).expect("args op-script twin builds");
+        assert_ne!(
+            content_id(&json),
+            content_id(&blueprint_to_json(&rust_built).expect("serializes")),
+            "authoring paths keep distinct content ids (debug names differ)"
+        );
+        let loaded = blueprint_from_json(&json, &|t| std_vocabulary(t)).expect("twin reloads");
+        let identity = |c: &Composite| {
+            content_id(&aura_engine::blueprint_identity_json(c).expect("identity-serializes"))
+        };
+        assert_eq!(
+            identity(&loaded),
+            identity(&rust_built),
+            "one topology -> one identity id, Rust-configured vs args op-script"
+        );
+    }
+
     #[test]
     fn mc_r_bootstrap_json_carries_every_bootstrap_field_under_the_mc_r_bootstrap_key() {
         // Property: the `mc_r_bootstrap` output line is the full RBootstrap shape —

crates/aura-cli/src/research_docs.rs

@@ -462,8 +462,14 @@ pub(crate) fn ref_fault_prose(f: &RefFault) -> String {
         RefFault::StrategyUnloadable { id, error } => {
             format!("strategy {id} cannot be loaded: {error}")
         }
-        RefFault::AxisNotInParamSpace { strategy, axis } => {
-            format!("strategy {strategy}: axis \"{axis}\" is not in the param space")
+        RefFault::AxisNotInParamSpace { strategy, axis, raw_candidate } => {
+            let mut msg = format!("strategy {strategy}: axis \"{axis}\" is not in the param space");
+            if let Some(candidate) = raw_candidate {
+                msg.push_str(&format!(
+                    "; axis names are raw node.param paths — did you mean \"{candidate}\"?"
+                ));
+            }
+            msg
         }
         RefFault::AxisKindMismatch { strategy, axis } => {
             format!("strategy {strategy}: axis \"{axis}\" declares a kind that is not the param's kind")
@@ -761,6 +767,7 @@ mod tests {
             ref_fault_prose(&RefFault::AxisNotInParamSpace {
                 strategy: "9f3a".into(),
                 axis: "nope".into(),
+                raw_candidate: None,
             }),
             ref_fault_prose(&RefFault::AxisKindMismatch {
                 strategy: "9f3a".into(),
@@ -781,6 +788,39 @@ mod tests {
         }
     }
 
+    /// #328: `ref_fault_prose` appends the did-you-mean clause, contiguous
+    /// and verbatim, exactly when `raw_candidate` is present — the document-
+    /// side refusal seam's mirror of the sweep `--axis` intake translation
+    /// (`aura-runner`'s `axes.rs` classify predicate), sharing the same
+    /// `axis names are raw node.param paths` clause pinned there.
+    #[test]
+    fn ref_fault_prose_renders_the_did_you_mean_when_a_raw_candidate_is_present() {
+        let msg = ref_fault_prose(&RefFault::AxisNotInParamSpace {
+            strategy: "9f3a".into(),
+            axis: "graph.fast.length".into(),
+            raw_candidate: Some("fast.length".into()),
+        });
+        assert_eq!(
+            msg,
+            "strategy 9f3a: axis \"graph.fast.length\" is not in the param space; \
+             axis names are raw node.param paths — did you mean \"fast.length\"?"
+        );
+    }
+
+    /// #328 (negative): a rejected axis with no `raw_candidate` (stripping one
+    /// leading segment yields no param-space hit, or the axis has no leading
+    /// segment to strip at all) renders today's prose unchanged — no
+    /// speculative suggestion.
+    #[test]
+    fn ref_fault_prose_omits_the_did_you_mean_when_no_raw_candidate() {
+        let msg = ref_fault_prose(&RefFault::AxisNotInParamSpace {
+            strategy: "9f3a".into(),
+            axis: "nope".into(),
+            raw_candidate: None,
+        });
+        assert_eq!(msg, "strategy 9f3a: axis \"nope\" is not in the param space");
+    }
+
     #[test]
     /// #194 (the prefix trap): a doc ref that carries the display `content:`
     /// prefix (a copy-paste from register/introspect output) is bare-only in

crates/aura-cli/src/scaffold.rs

@@ -234,8 +234,9 @@ std vocabulary, anchored by `Aura.toml`. There is no crate and no build step.
 - Run:   `aura run blueprints/signal.json` (the starter is closed — all
   params bound; bound values are defaults — any `--axis` may override them
   (#246))
-- Sweep: `aura sweep blueprints/signal.json --axis __NAME_SNAKE___signal.fast.length=2,4,8`
-  (`aura sweep <bp> --list-axes` lists the open + bound-overridable axes)
+- Sweep: `aura sweep blueprints/signal.json --axis fast.length=2,4,8`
+  (`aura sweep <bp> --list-axes` lists the open + bound-overridable axes, RAW
+  `<node>.<param>` names — #328)
 - Native nodes: when the project needs its first project-specific node,
   `aura nodes new <name>` scaffolds a node crate beside this project and
   attaches it via `[nodes]` in `Aura.toml` (build it with `cargo build`).
@@ -459,10 +460,11 @@ mod tests {
         let claude = render_project(CLAUDE_MD_PROJECT, "demo-lab");
         assert!(claude.contains("demo-lab"));
         // The CLAUDE.md sweep quickstart targets the closed starter itself
-        // with the rendered blueprint-name axis prefix (#246: a bound param
-        // is a default an axis overrides).
+        // with the RAW axis name (#246: a bound param is a default an axis
+        // overrides; #328: the axis namespace is raw, no blueprint-name
+        // prefix).
         assert!(claude.contains("blueprints/signal.json"));
-        assert!(claude.contains("demo_lab_signal.fast.length"));
+        assert!(claude.contains("--axis fast.length"));
     }
 
     /// #315: the scaffolded project CLAUDE.md teaches the execution semantics

crates/aura-cli/tests/graph_construct.rs

@@ -88,6 +88,43 @@ const SIGNAL_DOC_NAME_RESTATED: &str = r#"[
     {"op":"expose","from":"bias.bias","as":"bias"}
 ]"#;
 
+/// SIGNAL_DOC with a leading `{"op":"name",...}` (#331) — authors a render
+/// name distinct from the CLI's own default seed ("graph"), otherwise
+/// structurally identical to SIGNAL_DOC.
+const SIGNAL_DOC_NAMED: &str = r#"[
+    {"op":"name","name":"ny_momentum"},
+    {"op":"source","role":"price","kind":"F64"},
+    {"op":"add","type":"SMA","name":"fast","bind":{"length":{"I64":2}}},
+    {"op":"add","type":"SMA","name":"slow","bind":{"length":{"I64":4}}},
+    {"op":"add","type":"Sub"},
+    {"op":"add","type":"Bias"},
+    {"op":"feed","role":"price","into":["fast.series","slow.series"]},
+    {"op":"connect","from":"fast.value","to":"sub.lhs"},
+    {"op":"connect","from":"slow.value","to":"sub.rhs"},
+    {"op":"connect","from":"sub.value","to":"bias.signal"},
+    {"op":"expose","from":"bias.bias","as":"bias"}
+]"#;
+
+/// SIGNAL_DOC_NAME_RESTATED with an authored name (#331 spec test 7) instead
+/// of the CLI's default seed: the `doc` op's text restates the *authored*
+/// name ("ny_momentum") rather than the literal "graph" — the same
+/// RestatesName arm of the C29 shape gate must fire against whichever name
+/// the composite actually carries, not a hardcoded "graph" comparison.
+const SIGNAL_DOC_NAMED_NAME_RESTATED: &str = r#"[
+    {"op":"name","name":"ny_momentum"},
+    {"op":"doc","text":"Ny Momentum"},
+    {"op":"source","role":"price","kind":"F64"},
+    {"op":"add","type":"SMA","name":"fast","bind":{"length":{"I64":2}}},
+    {"op":"add","type":"SMA","name":"slow","bind":{"length":{"I64":4}}},
+    {"op":"add","type":"Sub"},
+    {"op":"add","type":"Bias"},
+    {"op":"feed","role":"price","into":["fast.series","slow.series"]},
+    {"op":"connect","from":"fast.value","to":"sub.lhs"},
+    {"op":"connect","from":"slow.value","to":"sub.rhs"},
+    {"op":"connect","from":"sub.value","to":"bias.signal"},
+    {"op":"expose","from":"bias.bias","as":"bias"}
+]"#;
+
 /// Every op below applies cleanly (all eager checks pass), but `sub.rhs` is
 /// never wired — a 0-cover input slot only the holistic finalize gate can
 /// reject. The smallest document that is op-valid yet whole-document-invalid.
@@ -170,8 +207,9 @@ fn graph_introspect_vocabulary_lists_exactly_the_closed_roster_count() {
     let lines: Vec<&str> = stdout.lines().filter(|l| !l.is_empty()).collect();
     assert_eq!(
         lines.len(),
-        33,
-        "the std-only (no project) vocabulary has exactly the roster's 33 entries: {stdout}"
+        36,
+        "the std-only (no project) vocabulary has exactly the roster's 36 entries (#271: \
+         Session/LinComb/CostSum moved in): {stdout}"
     );
 }
 
@@ -183,6 +221,78 @@ fn graph_introspect_node_answers_ports_without_a_build() {
     assert!(stdout.contains("value"), "lists the output field: {stdout}");
 }
 
+/// #271 acceptance criterion 1: an op-script reaching BOTH new arg-bearing
+/// roster entries (a `Session` for any IANA timezone/open, a `LinComb` of any
+/// arity — no Rust authored) builds via `aura graph build`; the emitted
+/// blueprint is `"version": 2` (the args-bearing tier) and carries the
+/// accepted timezone verbatim.
+///
+/// Deviation from the spec's literal worked example
+/// (`docs/specs/construction-args.md` §"The user-facing program"): that JSON
+/// wires `ny.bars_since_open` (`Session`'s I64 output) directly into
+/// `mix.term[0]` (`LinComb`'s F64 input) — a genuine kind mismatch the
+/// engine's eager `connect` gate refuses (I64 != F64), not a property of
+/// this feature. This fixture keeps every construction-args property the
+/// criterion asks for (Session + args, LinComb + args, version 2, tz
+/// carried) but feeds `LinComb` from two same-kind SMAs and exposes
+/// `ny.bars_since_open` at the boundary directly (`expose` has no kind
+/// constraint) instead of wiring it into the mismatched slot.
+#[test]
+fn graph_build_accepts_the_session_args_example() {
+    let doc = r#"[
+        {"op":"source","role":"price","kind":"F64"},
+        {"op":"add","type":"Session","name":"ny",
+         "args":{"tz":"America/New_York","open":"09:30"},
+         "bind":{"period_minutes":{"I64":15}}},
+        {"op":"add","type":"SMA","name":"fast","bind":{"length":{"I64":2}}},
+        {"op":"add","type":"SMA","name":"slow","bind":{"length":{"I64":4}}},
+        {"op":"add","type":"LinComb","name":"mix","args":{"arity":"2"},
+         "bind":{"weights[0]":{"F64":1.0},"weights[1]":{"F64":0.25}}},
+        {"op":"add","type":"Bias"},
+        {"op":"feed","role":"price","into":["ny.trigger","fast.series","slow.series"]},
+        {"op":"connect","from":"fast.value","to":"mix.term[0]"},
+        {"op":"connect","from":"slow.value","to":"mix.term[1]"},
+        {"op":"connect","from":"mix.value","to":"bias.signal"},
+        {"op":"expose","from":"bias.bias","as":"bias"},
+        {"op":"expose","from":"ny.bars_since_open","as":"session_bar"},
+        {"op":"doc","text":"NY-session-gated SMA blend"}
+    ]"#;
+    let (stdout, stderr, ok) = run(&["graph", "build"], doc);
+    assert!(ok, "the worked example builds: {stderr}");
+    assert!(stdout.contains(r#""format_version":2"#), "an args-bearing document is version 2: {stdout}");
+    assert!(stdout.contains("America/New_York"), "carries the accepted tz verbatim: {stdout}");
+}
+
+/// #271: a malformed construction-arg value (a bad IANA tz string) refuses at
+/// the `add` op with exit 1, naming the offending arg (not a Debug leak).
+#[test]
+fn graph_build_bad_tz_is_exit_1_naming_the_arg() {
+    let doc = r#"[
+        {"op":"add","type":"Session","name":"ny",
+         "args":{"tz":"not_a_zone","open":"09:30"}}
+    ]"#;
+    let (stderr, code) = run_code(&["graph", "build"], doc);
+    assert_eq!(code, Some(1), "a construction-arg fault is exit 1: {stderr}");
+    assert!(stderr.contains("tz"), "names the offending arg: {stderr}");
+    assert!(!stderr.contains("{"), "no Debug-struct leak: {stderr}");
+}
+
+/// #271: `graph introspect --node Session` self-describes its declared
+/// construction args (name, kind, hint) plus the pending note — the
+/// discovery surface an author reads before writing the `args` object.
+#[test]
+fn graph_introspect_node_session_lists_arg_rows() {
+    let (stdout, _stderr, ok) = run(&["graph", "introspect", "--node", "Session"], "");
+    assert!(ok, "exit success");
+    assert!(stdout.contains("tz"), "lists the tz arg: {stdout}");
+    assert!(stdout.contains("open"), "lists the open arg: {stdout}");
+    assert!(stdout.contains("IANA timezone"), "shows the tz hint: {stdout}");
+    assert!(
+        stdout.contains("ports and params form at construction"),
+        "shows the pending note: {stdout}"
+    );
+}
+
 #[test]
 fn graph_introspect_unwired_reports_open_slots() {
     let doc = r#"[
@@ -587,16 +697,44 @@ fn register_refuses_undescribed_composites_end_to_end() {
 
 /// Property (#196, the campaign-axis namespace): `--params <FILE>` prints the
 /// RAW composite param space — one `{name}:{kind:?}` line per open param, in
-/// lowering order, WITHOUT the harness-wrap prefix `aura sweep --list-axes`
-/// shows. The open fixture leaves exactly the two SMA lengths unbound
-/// (`bias.scale` is bound in the document).
+/// lowering order (#328: the one raw axis namespace — `aura sweep
+/// --list-axes` prints the identical lines for the same blueprint, see
+/// `graph_params_and_sweep_list_axes_are_line_identical` below). The open
+/// fixture leaves exactly the two SMA lengths unbound (`bias.scale` is bound
+/// in the document).
 #[test]
 fn graph_params_lists_raw_axis_namespace() {
     let dir = temp_cwd("params");
     let (stdout, stderr, code) =
         run_in(&dir, &["graph", "introspect", "--params", &fixture("r_sma_open.json")]);
     assert_eq!(code, Some(0), "stdout: {stdout} stderr: {stderr}");
-    assert_eq!(stdout, "fast.length:I64\nslow.length:I64\n", "the raw open params, in order");
+    assert_eq!(
+        stdout, "fast.length:I64\nslow.length:I64\nbias.scale:F64 default=0.5\n",
+        "the raw open params, then the raw bound param with its default"
+    );
+}
+
+/// Property (#328, cycle-close tidy fix): `graph introspect --params` and
+/// `aura sweep --list-axes` are two independently-dispatched discovery
+/// surfaces over the SAME raw axis namespace — the open pass shares one
+/// wrap-strip convention, the bound pass shares one `bound_param_space()` +
+/// `render_value` lexicon (`list_blueprint_axes`, main.rs; `params_lines`,
+/// this crate). Pinned here as a same-fixture LINE EQUALITY (not just two
+/// independently-asserted shapes) so the duplicated formatting cannot
+/// silently drift apart across an edit to either surface.
+#[test]
+fn graph_params_and_sweep_list_axes_are_line_identical() {
+    let dir = temp_cwd("params-vs-list-axes");
+    let bp = fixture("r_sma_open.json");
+    let (params_out, params_err, params_code) =
+        run_in(&dir, &["graph", "introspect", "--params", &bp]);
+    assert_eq!(params_code, Some(0), "graph introspect --params: {params_out} {params_err}");
+    let (axes_out, axes_err, axes_code) = run_in(&dir, &["sweep", &bp, "--list-axes"]);
+    assert_eq!(axes_code, Some(0), "sweep --list-axes: {axes_out} {axes_err}");
+    assert_eq!(
+        params_out, axes_out,
+        "the two discovery surfaces must print byte-identical lines for the same blueprint"
+    );
 }
 
 /// Property (#196, file-mode --content-id): a blueprint FILE's printed content
@@ -646,7 +784,10 @@ fn graph_params_by_content_id_matches_params_by_file() {
         run_in(&dir, &["graph", "introspect", "--params", &bp]);
     assert_eq!(by_file_code, Some(0), "stdout: {by_file_out} stderr: {by_file_err}");
     assert_eq!(by_id_out, by_file_out, "by-id and by-file agree on the raw axis namespace");
-    assert_eq!(by_id_out, "fast.length:I64\nslow.length:I64\n", "the raw open params, in order");
+    assert_eq!(
+        by_id_out, "fast.length:I64\nslow.length:I64\nbias.scale:F64 default=0.5\n",
+        "the raw open params, then the raw bound param with its default"
+    );
 }
 
 /// #194 (the prefix trap): a `--params <ID>` target may carry the display
@@ -663,7 +804,10 @@ fn graph_params_tolerates_content_prefix_on_target() {
     let (pfx_out, pfx_err, pfx_code) =
         run_in(&dir, &["graph", "introspect", "--params", &format!("content:{id}")]);
     assert_eq!(pfx_code, Some(0), "content:-prefixed --params must resolve: stdout {pfx_out} stderr {pfx_err}");
-    assert_eq!(pfx_out, "fast.length:I64\nslow.length:I64\n", "same raw axis namespace as the bare id");
+    assert_eq!(
+        pfx_out, "fast.length:I64\nslow.length:I64\nbias.scale:F64 default=0.5\n",
+        "same raw axis namespace as the bare id"
+    );
 }
 
 /// Property (#196, negative): `--params <ID>` with a well-shaped 64-hex id
@@ -822,6 +966,120 @@ fn graph_register_refuses_an_op_script_doc_that_restates_the_composite_name() {
     assert!(err.contains("C29"), "stderr cites the contract: {err}");
 }
 
+/// (#331 spec test 7) The C29 restates-name gate checks against the
+/// *authored* name, not a hardcoded default: a `doc` op restating the name
+/// set by a `name` op ("ny_momentum") refuses at register exactly like the
+/// default-name case above (`graph_register_refuses_an_op_script_doc_that_
+/// restates_the_composite_name`, which must stay green byte-identical).
+#[test]
+fn graph_register_refuses_a_doc_that_restates_an_authored_name() {
+    let dir = temp_cwd("register-op-script-restated-authored-name-doc");
+    let restated_script = dir.join("restated-authored-name-doc-script.json");
+    std::fs::write(&restated_script, SIGNAL_DOC_NAMED_NAME_RESTATED)
+        .expect("write op-script fixture");
+    let (out, err, code) = run_in(&dir, &["graph", "register", restated_script.to_str().unwrap()]);
+    assert_eq!(code, Some(1), "authored-name-restating doc refuses: {out} {err}");
+    assert!(err.contains("merely restates"), "stderr names the rule: {err}");
+    assert!(err.contains("C29"), "stderr cites the contract: {err}");
+}
+
+/// (#331 spec test 6) `graph build` on an ops doc with a `name` op emits
+/// blueprint JSON carrying the authored name, not the CLI's own seeded
+/// default (`"graph"`, `replay("graph", ...)` in `composite_from_str`).
+#[test]
+fn graph_build_emits_the_authored_name_from_a_name_op() {
+    let (stdout, stderr, ok) = run(&["graph", "build"], SIGNAL_DOC_NAMED);
+    assert!(ok, "build succeeds: {stderr}");
+    assert!(stdout.contains("\"name\":\"ny_momentum\""), "authored name carries into the blueprint: {stdout}");
+    assert!(!stdout.contains("\"name\":\"graph\""), "the default seed name must not leak in: {stdout}");
+}
+
+/// (#331 spec test 8) Refusal prose for a duplicate `name` op and a
+/// shape-violating name is op-indexed (`op N (name): ...`) — the same
+/// by-identifier labeling every other op fault gets.
+#[test]
+fn graph_build_name_op_refusals_are_op_indexed() {
+    let twice_named = r#"[
+        {"op":"source","role":"price","kind":"F64"},
+        {"op":"add","type":"SMA","name":"fast","bind":{"length":{"I64":2}}},
+        {"op":"name","name":"a"},
+        {"op":"name","name":"b"},
+        {"op":"feed","role":"price","into":["fast.series"]},
+        {"op":"expose","from":"fast.value","as":"out"}
+    ]"#;
+    let (_out, stderr, ok) = run(&["graph", "build"], twice_named);
+    assert!(!ok, "a second name op refuses");
+    assert!(stderr.contains("op 3 (name):"), "op-indexed at the second name op: {stderr}");
+
+    let slash_named = r#"[{"op":"name","name":"a/b"}]"#;
+    let (_out2, stderr2, ok2) = run(&["graph", "build"], slash_named);
+    assert!(!ok2, "a shape-violating name refuses");
+    assert!(stderr2.contains("op 0 (name):"), "op-indexed at the offending op: {stderr2}");
+}
+
+/// (#331 spec test 9, at the binary seam — mirrors
+/// `graph_introspect_identity_id_bridges_renamed_op_scripts`'s pattern for
+/// the debug-name field): a named and an unnamed build of the SAME
+/// structural script share the identity id (the name is stripped as a
+/// debug symbol before identity hashing, C23) and differ in the content id
+/// (the name is part of the serialized bytes).
+#[test]
+fn graph_named_and_unnamed_twins_share_identity_id_and_differ_content_id() {
+    let (ia, _e, ok) = run(&["graph", "introspect", "--identity-id"], SIGNAL_DOC);
+    assert!(ok, "exit success");
+    let (ib, _e2, ok2) = run(&["graph", "introspect", "--identity-id"], SIGNAL_DOC_NAMED);
+    assert!(ok2, "exit success");
+    assert_eq!(ia.trim(), ib.trim(), "the name is stripped before identity hashing (C23)");
+
+    let (ca, _e3, ok3) = run(&["graph", "introspect", "--content-id"], SIGNAL_DOC);
+    let (cb, _e4, ok4) = run(&["graph", "introspect", "--content-id"], SIGNAL_DOC_NAMED);
+    assert!(ok3 && ok4, "exit success");
+    assert_ne!(ca.trim(), cb.trim(), "the name is part of the serialized bytes -> different content id");
+}
+
+/// (#331 spec test 10, the skeptic's bypass route): the op intake
+/// (`GraphSession::set_name`) is not the name's only data-borne birth
+/// route — a hand-edited blueprint ENVELOPE (not an op-script) can carry a
+/// shape-violating root name directly. `aura graph register` on such a file
+/// is refused naming the offending name (exit 1, the refusal convention
+/// every sibling test in this module asserts), not silently stored under a
+/// name that would write `traces/../x/` at run time. Shipped envelope
+/// fixtures with plain root names (`doc_blueprint.json`'s "sig",
+/// `nested_doc_blueprint.json`'s "root", every op-script's default "graph")
+/// stay accepted — the surrounding suite is that regression gate.
+///
+/// Spec test 10 also names `build` as a gated envelope-intake route
+/// alongside `register`. The `graph build` SUBCOMMAND takes only a stdin
+/// op-script (`Vec<OpDoc>`, never a JSON object) — it cannot ingest this
+/// envelope fixture at all (a shape mismatch fires before any name is ever
+/// read). The file-consuming envelope-intake sibling `build` route is
+/// `graph introspect --content-id <FILE>` (its own doc comment: "one
+/// build, then each requested id…") — the other call site this iteration
+/// moved onto the same `composite_from_authored_text` choke point as
+/// `register`, so it is the leg exercised here, sharing the identical
+/// `name_gate_fault_prose` text.
+#[test]
+fn graph_build_and_register_refuse_a_hand_crafted_envelope_with_a_bad_root_name() {
+    let dir = temp_cwd("register-bad-root-name");
+    let (envelope_bytes, _e, built) = run(&["graph", "build"], SIGNAL_DOC_DESCRIBED);
+    assert!(built, "graph build produces the envelope");
+    let bad = envelope_bytes.replacen("\"name\":\"graph\"", "\"name\":\"../x\"", 1);
+    assert!(bad.contains("\"name\":\"../x\""), "the root-name replace landed: {bad}");
+    let file = dir.join("bad-root-name.json");
+    std::fs::write(&file, &bad).expect("write envelope fixture");
+
+    let (out, err, code) = run_in(&dir, &["graph", "register", file.to_str().unwrap()]);
+    assert_eq!(code, Some(1), "a shape-violating root name refuses (not a panic): {out} {err}");
+    assert!(err.contains("../x"), "names the offending root name: {err}");
+
+    // The other file-consuming envelope intake (same fixture, same choke
+    // point) refuses identically.
+    let (out2, err2, code2) =
+        run_in(&dir, &["graph", "introspect", "--content-id", file.to_str().unwrap()]);
+    assert_eq!(code2, Some(1), "the sibling envelope intake refuses too: {out2} {err2}");
+    assert_eq!(err2, err, "both file-consuming envelope intakes share the identical fault prose");
+}
+
 /// Property (#202, the same on-ramp seam at the sibling verb): `aura graph
 /// introspect --params` accepts an op-script exactly as it accepts a blueprint
 /// envelope — the raw axis namespace it prints for the op-script equals the one it
@@ -847,6 +1105,35 @@ fn graph_params_accepts_an_op_script_matching_its_envelope() {
     assert_eq!(op_out, env_out, "op-script and envelope agree on the raw axis namespace");
 }
 
+/// (#331 review finding, the C29 exemption's ratifying pin): the root-name
+/// shape gate lives at the CLI's file-consuming envelope intakes (`register`,
+/// `introspect --content-id <FILE>`) — never at STORE read-back. A blueprint
+/// with a shape-violating root name registered DIRECTLY through the
+/// `aura-registry` store API (bypassing the CLI's gate entirely, the way a
+/// pre-#331 artifact would already sit in a project's store) must still be
+/// introspectable: `introspect --params <ID>` reads the store, not a file, so
+/// it must never re-punish an artifact the store already accepted — C29,
+/// "registered artifacts are never retroactively invalidated".
+#[test]
+fn graph_introspect_params_accepts_a_pre_331_store_artifact_with_a_bad_root_name() {
+    let dir = temp_cwd("introspect-store-readback-bad-root-name");
+    let (envelope_bytes, _e, built) = run(&["graph", "build"], SIGNAL_DOC_DESCRIBED);
+    assert!(built, "graph build produces the envelope");
+    let bad = envelope_bytes.replacen("\"name\":\"graph\"", "\"name\":\"../x\"", 1);
+    assert!(bad.contains("\"name\":\"../x\""), "the root-name replace landed: {bad}");
+
+    // Bypass the CLI's gate entirely: the registry's own store API is the
+    // simulated pre-#331 write path.
+    let id = aura_research::content_id_of(&bad);
+    let registry = aura_registry::Registry::open(dir.join("runs/runs.jsonl"));
+    registry
+        .put_blueprint(&id, &bad)
+        .expect("the registry's own store API has no root-name gate to bypass");
+
+    let (out, err, code) = run_in(&dir, &["graph", "introspect", "--params", &id]);
+    assert_eq!(code, Some(0), "store read-back stays ungated (C29): {out} {err}");
+}
+
 /// Property (#226, the render positional closes the #202 on-ramp family):
 /// `aura graph <op-script.json>` (the render positional) accepts an op-script
 /// document (a JSON array) exactly as it accepts a #155 blueprint envelope (a
@@ -892,7 +1179,10 @@ fn shipped_r_sma_example_is_genuinely_closed() {
     let (stdout, stderr, code) =
         run_in(&dir, &["graph", "introspect", "--params", &example("r_sma.json")]);
     assert_eq!(code, Some(0), "stdout: {stdout} stderr: {stderr}");
-    assert_eq!(stdout, "", "the closed example must leave zero params unbound");
+    assert_eq!(
+        stdout, "fast.length:I64 default=2\nslow.length:I64 default=4\nbias.scale:F64 default=0.5\n",
+        "zero OPEN params — every knob is now printed as a raw bound default instead"
+    );
 }
 
 /// Property (#159): the open fixture (`tests/fixtures/r_sma_open.json`) is a
@@ -910,8 +1200,8 @@ fn open_r_sma_fixture_lists_its_axis_namespace() {
         run_in(&dir, &["graph", "introspect", "--params", &fixture("r_sma_open.json")]);
     assert_eq!(code, Some(0), "stdout: {stdout} stderr: {stderr}");
     assert_eq!(
-        stdout, "fast.length:I64\nslow.length:I64\n",
-        "the raw open params, in order, from the public gallery copy"
+        stdout, "fast.length:I64\nslow.length:I64\nbias.scale:F64 default=0.5\n",
+        "the raw open params, then the raw bound param, from the public gallery copy"
     );
 }
 
@@ -948,12 +1238,17 @@ fn shipped_r_breakout_example_is_genuinely_closed() {
     let (stdout, stderr, code) =
         run_in(&dir, &["graph", "introspect", "--params", &example("r_breakout.json")]);
     assert_eq!(code, Some(0), "stdout: {stdout} stderr: {stderr}");
-    assert_eq!(stdout, "", "the closed example must leave zero params unbound");
+    assert_eq!(
+        stdout,
+        "delay.lag:I64 default=1\nchannel_hi.length:I64 default=3\nchannel_lo.length:I64 default=3\n",
+        "zero OPEN params — every knob is now printed as a raw bound default instead"
+    );
 }
 
 /// Property (#159 cut 2): the open fixture (`tests/fixtures/r_breakout_open.json`)
 /// lists its ONE ganged channel axis (#61: the two rolling windows are structurally
-/// one knob).
+/// one knob) followed by the still-bound `delay.lag` default (#328: bound params
+/// are listed too, line-identical to `--list-axes`).
 #[test]
 fn open_r_breakout_fixture_lists_its_axis_namespace() {
     let dir = temp_cwd("r-breakout-example-open-params");
@@ -961,8 +1256,9 @@ fn open_r_breakout_fixture_lists_its_axis_namespace() {
         run_in(&dir, &["graph", "introspect", "--params", &fixture("r_breakout_open.json")]);
     assert_eq!(code, Some(0), "stdout: {stdout} stderr: {stderr}");
     assert_eq!(
-        stdout, "channel_length:I64\n",
-        "the ganged channel knob — one public axis for the two rolling windows (#61)"
+        stdout, "channel_length:I64\ndelay.lag:I64 default=1\n",
+        "the ganged channel knob — one public axis for the two rolling windows (#61) — \
+         then the still-bound delay.lag default"
     );
 }
 
@@ -991,7 +1287,7 @@ fn open_r_breakout_fixture_gang_axis_matches_the_closed_example() {
     let sweep_dir = temp_cwd("r-breakout-gang-axis-sweep");
     let (sweep_stdout, sweep_stderr, sweep_code) = run_in(
         &sweep_dir,
-        &["sweep", &fixture("r_breakout_open.json"), "--axis", "r_breakout_signal.channel_length=3"],
+        &["sweep", &fixture("r_breakout_open.json"), "--axis", "channel_length=3"],
     );
     assert_eq!(sweep_code, Some(0), "sweep stderr: {sweep_stderr}");
     let lines: Vec<&str> = sweep_stdout.lines().collect();
@@ -1013,7 +1309,11 @@ fn shipped_r_meanrev_example_is_genuinely_closed() {
     let (stdout, stderr, code) =
         run_in(&dir, &["graph", "introspect", "--params", &example("r_meanrev.json")]);
     assert_eq!(code, Some(0), "stdout: {stdout} stderr: {stderr}");
-    assert_eq!(stdout, "", "the closed example must leave zero params unbound");
+    assert_eq!(
+        stdout,
+        "mean_window.length:I64 default=3\nvar_window.length:I64 default=3\nband.factor:F64 default=2\n",
+        "zero OPEN params — every knob is now printed as a raw bound default instead"
+    );
 }
 
 /// Property (#159 cut 3): the open fixture (`tests/fixtures/r_meanrev_open.json`)
@@ -1051,8 +1351,8 @@ fn open_r_meanrev_fixture_gang_plus_plain_axis_matches_the_closed_example() {
         &sweep_dir,
         &[
             "sweep", &fixture("r_meanrev_open.json"),
-            "--axis", "r_meanrev_signal.window=3",
-            "--axis", "r_meanrev_signal.band.factor=2.0",
+            "--axis", "window=3",
+            "--axis", "band.factor=2.0",
         ],
     );
     assert_eq!(sweep_code, Some(0), "sweep stderr: {sweep_stderr}");
@@ -1817,8 +2117,8 @@ fn graph_build_use_end_to_end_axes() {
         run_in(&dir, &["sweep", consumer_bp.to_str().unwrap(), "--list-axes"]);
     assert_eq!(axes_code, Some(0), "list-axes: {axes_out} {axes_err}");
     assert_eq!(
-        axes_out, "graph.trend.sma.length:I64\n",
-        "the spliced instance's open param surfaces path-qualified, bare (unbound) form"
+        axes_out, "trend.sma.length:I64\n",
+        "the spliced instance's open param surfaces path-qualified, bare (unbound) RAW form (#328)"
     );
 }
 

crates/aura-cli/tests/help_self_description.rs

@@ -58,7 +58,8 @@ fn sugar_verbs_name_their_document_shape() {
 
 /// #323: `graph build --help` carries the op-list reference — the op kinds
 /// and fields are learnable from the binary, not only from serde refusals.
-/// #317: the `use` op joins the roster (nine -> ten).
+/// #317: the `use` op joins the roster (nine -> ten). #331: the `name` op
+/// joins the roster (ten -> eleven).
 #[test]
 fn graph_build_help_carries_the_op_reference() {
     let (out, err, ok) = run(&["graph", "build", "--help"]);
@@ -74,6 +75,7 @@ fn graph_build_help_carries_the_op_reference() {
         r#"{"op":"gang""#,
         r#"{"op":"doc""#,
         r#"{"op":"use""#,
+        r#"{"op":"name""#,
     ] {
         assert!(out.contains(op), "op reference carries {op}: {out}");
     }

crates/aura-cli/tests/project_load.rs

@@ -117,9 +117,9 @@ fn project_registry_anchors_at_discovered_root_not_invocation_cwd() {
             "sweep",
             &closed_bp,
             "--axis",
-            "sma_signal.fast.length=2,4",
+            "fast.length=2,4",
             "--axis",
-            "sma_signal.slow.length=8,16",
+            "slow.length=8,16",
             "--name",
             "proj-anchor",
         ])

crates/aura-cli/tests/project_new.rs

@@ -135,7 +135,7 @@ fn data_only_project_sweeps_without_any_build() {
     assert!(new.status.success(), "{}", String::from_utf8_lossy(&new.stderr));
     let proj = base.join("scratch");
     let out = aura(
-        &["sweep", "blueprints/signal.json", "--axis", "scratch_signal.fast.length=2,4"],
+        &["sweep", "blueprints/signal.json", "--axis", "fast.length=2,4"],
         &proj,
     );
     assert!(out.status.success(), "stderr: {}", String::from_utf8_lossy(&out.stderr));
@@ -157,7 +157,7 @@ fn data_only_project_sweep_over_the_starter_opens_one_member_per_axis_value() {
     assert!(new.status.success(), "{}", String::from_utf8_lossy(&new.stderr));
     let proj = base.join("scratch");
     let out = aura(
-        &["sweep", "blueprints/signal.json", "--axis", "scratch_signal.fast.length=2,4,8"],
+        &["sweep", "blueprints/signal.json", "--axis", "fast.length=2,4,8"],
         &proj,
     );
     assert!(out.status.success(), "stderr: {}", String::from_utf8_lossy(&out.stderr));

crates/aura-cli/tests/project_sweep_campaign.rs

@@ -160,8 +160,8 @@ fn project_node_open_param_sweeps_and_reproduces() {
     // the fixture's three BOUND params as `default=`-lines (#246: every bound
     // param is an equally re-openable `--axis`, listed regardless of how many
     // knobs happen to be open alongside it). NOT gated: enumerating axes needs
-    // no data, so the discoverability half runs on every host. The wrapped
-    // name is `<blueprint>.<node>.<param>`.
+    // no data, so the discoverability half runs on every host. The name is RAW
+    // `<node>.<param>` (#328: the blueprint name stays out of axis paths).
     let axes = aura_in(dir, &["sweep", "blueprints/scaled_open.json", "--list-axes"]);
     assert!(
         axes.status.success(),
@@ -170,10 +170,10 @@ fn project_node_open_param_sweeps_and_reproduces() {
     );
     assert_eq!(
         String::from_utf8_lossy(&axes.stdout),
-        "scaled_signal.gain.factor:F64\n\
-         scaled_signal.fast.length:I64 default=2\n\
-         scaled_signal.slow.length:I64 default=4\n\
-         scaled_signal.bias.scale:F64 default=0.5\n",
+        "gain.factor:F64\n\
+         fast.length:I64 default=2\n\
+         slow.length:I64 default=4\n\
+         bias.scale:F64 default=0.5\n",
         "the project node's own OPEN param is the one open axis, alongside the \
          fixture's bound defaults; stderr: {}",
         String::from_utf8_lossy(&axes.stderr)
@@ -198,7 +198,7 @@ fn project_node_open_param_sweeps_and_reproduces() {
             "--to",
             GER40_TO_MS,
             "--axis",
-            "scaled_signal.gain.factor=0.5,1.0",
+            "gain.factor=0.5,1.0",
             "--name",
             "knob",
         ],
@@ -212,9 +212,11 @@ fn project_node_open_param_sweeps_and_reproduces() {
     let lines: Vec<&str> = stdout.lines().collect();
     assert_eq!(lines.len(), 2, "one member line per factor point: {stdout}");
 
-    // Each member's manifest carries the swept PROJECT-node param binding under
-    // its wrapped name — the load-bearing proof that it is MY node's knob that
-    // varied across the family, not some incidental std axis.
+    // Each member's manifest carries the swept PROJECT-node param binding
+    // under its RAW name (this cycle's tidy fix, #328 batch 2: the
+    // real/campaign route's own `manifest.params` mints raw too now) — the
+    // load-bearing proof that it is MY node's knob that varied across the
+    // family, not some incidental std axis.
     for (line, factor) in lines.iter().zip([0.5_f64, 1.0]) {
         let v: serde_json::Value = serde_json::from_str(line).expect("member line parses as JSON");
         assert_eq!(
@@ -227,7 +229,7 @@ fn project_node_open_param_sweeps_and_reproduces() {
             .expect("manifest.params is an array");
         let bound = params
             .iter()
-            .find(|p| p[0].as_str() == Some("scaled_signal.gain.factor"))
+            .find(|p| p[0].as_str() == Some("gain.factor"))
             .and_then(|p| p[1]["F64"].as_f64());
         assert_eq!(
             bound,

crates/aura-cli/tests/research_docs.rs

@@ -329,9 +329,9 @@ fn campaign_validate_in_project_reports_referential_tier_end_to_end() {
             "sweep",
             &closed_bp,
             "--axis",
-            "sma_signal.fast.length=2,4",
+            "fast.length=2,4",
             "--axis",
-            "sma_signal.slow.length=8,16",
+            "slow.length=8,16",
             "--name",
             "campaign-ref-seed",
         ],
@@ -377,10 +377,11 @@ fn campaign_validate_in_project_reports_referential_tier_end_to_end() {
         .trim_start_matches("content:")
         .to_string();
 
-    // "fast.length": the axis name is the RAW composite's `param_space` name.
+    // "fast.length": the axis name is the RAW composite's `param_space` name —
+    // the SAME namespace `aura sweep --axis` itself binds against now (#328).
     // `validate_campaign_refs` loads the stored blueprint bare, unlike the
-    // sweep's `wrap_r`-wrapped axis probe, so it does NOT carry the
-    // "sma_signal." prefix `aura sweep --axis` binds against.
+    // sweep's `wrap_r`-wrapped axis probe, so it never carries a wrap prefix
+    // to begin with.
     let campaign = format!(
         r#"{{
   "format_version": 1,
@@ -448,9 +449,9 @@ fn campaign_validate_resolves_identity_ref_via_index_first_lookup_then_index_hit
             "sweep",
             &closed_bp,
             "--axis",
-            "sma_signal.fast.length=2,4",
+            "fast.length=2,4",
             "--axis",
-            "sma_signal.slow.length=8,16",
+            "slow.length=8,16",
             "--name",
             "campaign-identity-seed",
         ],
@@ -1288,9 +1289,9 @@ fn seed_blueprint(dir: &Path, name: &str) -> String {
             "sweep",
             &closed_bp,
             "--axis",
-            "sma_signal.fast.length=2,4",
+            "fast.length=2,4",
             "--axis",
-            "sma_signal.slow.length=8,16",
+            "slow.length=8,16",
             "--name",
             name,
         ],

crates/aura-cli/tests/run_measurement.rs

@@ -81,3 +81,60 @@ fn measurement_run_honours_the_tap_selector() {
     let expected = (1.0097_f64 + 1.0092) / 2.0;
     assert!((got - expected).abs() < 1e-9, "last row: got {got}, expected {expected}");
 }
+
+/// #331 delta re-review, the third authored-file intake route: `dispatch_run`
+/// loads a FRESH FILE via `blueprint_from_json` and, on this measurement arm,
+/// feeds `signal.name()` straight into `bind_tap_plan` -> `TraceStore::begin_run`
+/// (`trace_store.rs` joins the name unsanitized) — a hand-crafted envelope with
+/// `"name":"../x"` used to reach `--tap fast_tap=record` and escape
+/// `runs/traces/<name>/` for `runs/x/` (one level up, since `traces/../x`
+/// normalizes there) instead of refusing at the same root-name choke point
+/// `register`/`introspect --content-id <FILE>` already gate through. This pins
+/// the closed route: exit nonzero (dispatch_run's own bad-input-file
+/// convention, exit 2), the shared `name_gate_fault_prose` wording, and — the
+/// property that actually matters — the escaped directory is never created.
+#[test]
+fn run_refuses_a_hand_crafted_envelope_with_a_bad_root_name_before_any_trace_write() {
+    let cwd = temp_cwd("bad-root-name");
+    let mut v: serde_json::Value =
+        serde_json::from_str(&measurement_blueprint_json()).expect("parse measurement blueprint");
+    v["blueprint"]["name"] = serde_json::json!("../x");
+    let bad = serde_json::to_string(&v).expect("re-serialize with a shape-violating root name");
+    let bp_path = cwd.join("bad-root-name.json");
+    std::fs::write(&bp_path, &bad).expect("write bad-root-name blueprint");
+
+    let out = Command::new(BIN)
+        .args(["run", bp_path.to_str().expect("utf-8 path"), "--tap", "fast_tap=record"])
+        .current_dir(&cwd)
+        .output()
+        .expect("spawn aura run");
+    assert_eq!(
+        out.status.code(),
+        Some(2),
+        "a shape-violating root name refuses at dispatch_run's own bad-file exit code: {:?} stderr={}",
+        out.status,
+        String::from_utf8_lossy(&out.stderr)
+    );
+    let stderr = String::from_utf8_lossy(&out.stderr);
+    assert!(
+        stderr.contains(r#"blueprint name "../x" is invalid"#),
+        "the shared name_gate_fault_prose wording names the offending root name: {stderr}"
+    );
+    assert!(
+        out.stdout.is_empty(),
+        "a refused run must not print a report: {:?}",
+        String::from_utf8_lossy(&out.stdout)
+    );
+
+    // The property that actually matters: the escaped write target (one level
+    // up from `traces/`, since `trace_store.rs` joins the name unsanitized)
+    // was never created — the gate fires before `begin_run` ever touches disk.
+    assert!(
+        !cwd.join("runs/x").exists(),
+        "the escaped trace directory must never be created"
+    );
+    assert!(
+        !cwd.join("runs/traces").exists(),
+        "no trace directory of any shape is written on a refused run"
+    );
+}

crates/aura-composites/src/lib.rs

@@ -52,8 +52,8 @@ fn vol_stop_inner(knobs: Option<(i64, f64)>) -> Composite {
     let sqrt = g.add(Sqrt::builder()); // → σ (price units)
     // k·σ: weights[0] bound (Some) or open and named `stop_k` (None).
     let scale = g.add(match knobs {
-        Some((_, k)) => LinComb::builder(1).bind("weights[0]", Scalar::f64(k)),
-        None => LinComb::builder(1).named("stop_k"),
+        Some((_, k)) => LinComb::configured(1).bind("weights[0]", Scalar::f64(k)),
+        None => LinComb::configured(1).named("stop_k"),
     });
     g.feed(price, [delay.input("series"), sub.input("lhs")]);
     g.connect(delay.output("value"), sub.input("rhs"));
@@ -174,7 +174,7 @@ pub fn cost_graph(cost_nodes: Vec<PrimitiveBuilder>) -> Composite {
     let entry = g.input_role("entry_price");
     let stop = g.input_role("stop_price");
 
-    let agg = g.add(CostSum::builder(n));
+    let agg = g.add(CostSum::configured(n));
 
     // Per-role geometry fan targets, collected across all nodes, fed once per role.
     let mut closed_t = Vec::with_capacity(n);

crates/aura-core/Cargo.toml

@@ -7,6 +7,10 @@ publish.workspace = true
 
 [dependencies]
 serde = { workspace = true }
+# ArgValue::Tz carries chrono_tz::Tz (the closed IANA table, exact names only) —
+# already a workspace dependency of four other crates (see docs/specs/
+# construction-args.md § Dependency note).
+chrono-tz = { version = "0.10", default-features = false }
 
 [dev-dependencies]
 serde_json = { workspace = true }

crates/aura-core/src/lib.rs

@@ -44,8 +44,9 @@ pub use column::{Column, Window};
 pub use ctx::Ctx;
 pub use error::KindMismatch;
 pub use node::{
-    doc_gate, zip_params, BindOpError, BoundParam, DocGateFault, FieldSpec, Firing, Node,
-    NodeSchema, ParamSpec, PortSpec, PrimitiveBuilder,
+    doc_gate, zip_params, ArgKind, ArgOpError, ArgSpec, ArgValue, BindOpError, BoundParam,
+    ConstructionArg, DocGateFault, FieldSpec, Firing, Node, NodeSchema, ParamSpec, PortSpec,
+    PrimitiveBuilder,
 };
 pub use scalar::{Scalar, ScalarKind, Timestamp};
 pub use series_fold::SeriesFold;

crates/aura-core/src/node.rs

@@ -112,6 +112,7 @@ pub struct PrimitiveBuilder {
     instance_name: Option<String>,
     schema: NodeSchema,
     bound: Vec<BoundParam>,
+    args: ArgsState, // NEW: `Plain` for every existing (non-arg-bearing) node
     // The build closure's type is exactly the recipe contract (a param slice in, a
     // boxed node out); a type alias would not clarify it.
     #[allow(clippy::type_complexity)]
@@ -127,7 +128,108 @@ impl PrimitiveBuilder {
         schema: NodeSchema,
         build: impl Fn(&[Cell]) -> Box<dyn Node> + 'static,
     ) -> Self {
-        Self { name, instance_name: None, schema, bound: Vec::new(), build: Box::new(build) }
+        Self { name, instance_name: None, schema, bound: Vec::new(), args: ArgsState::Plain, build: Box::new(build) }
+    }
+
+    /// An arg-bearing recipe: introspectable (doc + declared `ArgSpec`s) but
+    /// not yet constructible. `schema` carries only the doc line (empty
+    /// inputs/output/params — the real signature forms inside `make`, once
+    /// `try_args` has parsed values to hand it); `build` on a pending builder
+    /// panics (the `bind` panic-contract twin) — the data path always goes
+    /// through `try_args` first, so no pending builder ever reaches `build`.
+    pub fn pending(
+        name: &'static str,
+        doc: &'static str,
+        specs: &'static [ArgSpec],
+        make: fn(&[(String, ArgValue)]) -> PrimitiveBuilder,
+    ) -> Self {
+        Self {
+            name,
+            instance_name: None,
+            schema: NodeSchema { doc, ..Default::default() },
+            bound: Vec::new(),
+            args: ArgsState::Pending { specs, make },
+            build: Box::new(move |_| {
+                panic!(
+                    "PrimitiveBuilder::build: `{name}` is an unconfigured arg-bearing type — \
+                     call try_args first"
+                )
+            }),
+        }
+    }
+
+    /// Validate raw `(name, value)` pairs against the declared `ArgSpec`s
+    /// (strict form — see `ArgKind::parse`), then run `make`, returning the
+    /// configured builder (`args: Configured{..}`) with this builder's
+    /// `instance_name` carried over. `Plain` + empty raw is `Ok(self)`
+    /// (uniform op application, #157's try_bind precedent); `Plain` +
+    /// non-empty raw is `NotArgBearing`. Validation order (deterministic):
+    /// first unknown arg name, then a duplicate, then the first spec-order
+    /// missing arg, then per-kind parse failures (`BadValue`).
+    pub fn try_args(self, raw: &[(String, String)]) -> Result<Self, ArgOpError> {
+        let (specs, make) = match &self.args {
+            ArgsState::Plain | ArgsState::Configured { .. } => {
+                return if raw.is_empty() { Ok(self) } else { Err(ArgOpError::NotArgBearing) };
+            }
+            ArgsState::Pending { specs, make } => (*specs, *make),
+        };
+
+        for (name, _) in raw {
+            if !specs.iter().any(|s| s.name == name.as_str()) {
+                return Err(ArgOpError::UnknownArg(name.clone()));
+            }
+        }
+        for i in 0..raw.len() {
+            if raw[i + 1..].iter().any(|(n, _)| n == &raw[i].0) {
+                return Err(ArgOpError::DuplicateArg(raw[i].0.clone()));
+            }
+        }
+        for spec in specs {
+            if !raw.iter().any(|(n, _)| n.as_str() == spec.name) {
+                return Err(ArgOpError::MissingArg(spec.name.to_string()));
+            }
+        }
+
+        let mut values = Vec::with_capacity(specs.len());
+        let mut accepted = Vec::with_capacity(specs.len());
+        for spec in specs {
+            let raw_val = &raw.iter().find(|(n, _)| n.as_str() == spec.name).expect("presence checked above").1;
+            let value = spec.kind.parse(raw_val).map_err(|()| ArgOpError::BadValue {
+                arg: spec.name.to_string(),
+                kind: spec.kind,
+                got: raw_val.clone(),
+            })?;
+            values.push((spec.name.to_string(), value));
+            accepted.push(ConstructionArg { name: spec.name.to_string(), value: raw_val.clone() });
+        }
+
+        let mut built = make(&values);
+        built.instance_name = self.instance_name;
+        built.args = ArgsState::Configured { values: accepted };
+        Ok(built)
+    }
+
+    /// The declared construction-arg specs (a view into the pending recipe);
+    /// empty unless this builder `is_pending()`.
+    pub fn arg_specs(&self) -> &[ArgSpec] {
+        match &self.args {
+            ArgsState::Pending { specs, .. } => specs,
+            _ => &[],
+        }
+    }
+
+    /// The accepted, verbatim construction-arg pairs (the serialize surface);
+    /// empty unless this builder was configured via `try_args`.
+    pub fn construction_args(&self) -> &[ConstructionArg] {
+        match &self.args {
+            ArgsState::Configured { values } => values,
+            _ => &[],
+        }
+    }
+
+    /// True for an arg-bearing recipe not yet configured via `try_args`.
+    pub fn is_pending(&self) -> bool {
+        matches!(self.args, ArgsState::Pending { .. })
     }
     /// Set this node instance's explicit name. Must be non-empty: the name forms
     /// a knob-address segment (`<composite>.<name>.<param>`, via `node_name()` in
@@ -344,6 +446,135 @@ pub enum BindOpError {
     AlreadyGanged { param: String, gang: String },
 }
 
+/// Closed construction-arg kinds (spec §Closedness) — deliberately NOT
+/// `ScalarKind`: the four scalar kinds are the streamed set (invariant 4); args
+/// are bootstrap metadata, never streamed, so the two closedness axes stay
+/// separate types.
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum ArgKind {
+    /// An IANA timezone name (`chrono_tz::Tz`'s own parser — exact, case-sensitive).
+    Tz,
+    /// A local wall-clock time, strict zero-padded `HH:MM` (00-23 / 00-59).
+    TimeOfDay,
+    /// A plain positive decimal count (>= 1, no leading zeros).
+    Count,
+}
+
+impl ArgKind {
+    /// Parse `raw` in this kind's strict canonical form. The accepted form IS
+    /// the canonical form (spec §Closedness) — there is no normalization
+    /// layer, so a near-miss string refuses rather than being silently
+    /// rewritten (content ids stay input-variance-free by refusal).
+    // The spec's pinned shape (`Result<ArgValue, ()>`, mirroring `ArgOpError`'s
+    // caller-side `BadValue` wrapping the plain refusal): the unit error carries
+    // no information of its own — `try_args` is the only caller and always maps
+    // it to `ArgOpError::BadValue`, which is where the real detail lives.
+    #[allow(clippy::result_unit_err)]
+    pub fn parse(&self, raw: &str) -> Result<ArgValue, ()> {
+        match self {
+            ArgKind::Tz => raw.parse::<chrono_tz::Tz>().map(ArgValue::Tz).map_err(|_| ()),
+            ArgKind::TimeOfDay => {
+                let bytes = raw.as_bytes();
+                if bytes.len() != 5 || bytes[2] != b':' {
+                    return Err(());
+                }
+                let (h, m) = (&raw[0..2], &raw[3..5]);
+                if !h.bytes().all(|b| b.is_ascii_digit()) || !m.bytes().all(|b| b.is_ascii_digit()) {
+                    return Err(());
+                }
+                let hour: u32 = h.parse().map_err(|_| ())?;
+                let minute: u32 = m.parse().map_err(|_| ())?;
+                if hour > 23 || minute > 59 {
+                    return Err(());
+                }
+                Ok(ArgValue::TimeOfDay { hour, minute })
+            }
+            ArgKind::Count => {
+                if raw.is_empty() || !raw.bytes().all(|b| b.is_ascii_digit()) {
+                    return Err(());
+                }
+                if raw.len() > 1 && raw.starts_with('0') {
+                    return Err(()); // leading zero: not the canonical form
+                }
+                let n: usize = raw.parse().map_err(|_| ())?;
+                if n == 0 {
+                    return Err(()); // Count is >= 1
+                }
+                Ok(ArgValue::Count(n))
+            }
+        }
+    }
+
+    /// The static, per-kind hint line (introspection surface, C29) — a closed
+    /// table keyed only by `ArgKind`, never per-entry freetext.
+    pub fn hint(&self) -> &'static str {
+        match self {
+            ArgKind::Tz => "IANA timezone name, e.g. Europe/Berlin",
+            ArgKind::TimeOfDay => "local wall-clock HH:MM",
+            ArgKind::Count => "positive integer count",
+        }
+    }
+}
+
+/// One declared construction arg of an arg-bearing `PrimitiveBuilder` (the
+/// pending recipe's twin of `ParamSpec`): its render name and closed `ArgKind`.
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub struct ArgSpec {
+    pub name: &'static str,
+    pub kind: ArgKind,
+}
+
+/// A parsed, validated construction-arg value (in-memory only; documents carry
+/// the canonical string form in [`ConstructionArg`]).
+#[derive(Clone, Debug, PartialEq)]
+pub enum ArgValue {
+    Tz(chrono_tz::Tz),
+    TimeOfDay { hour: u32, minute: u32 },
+    Count(usize),
+}
+
+/// A consumed construction arg — the id-bearing, serialized twin of
+/// `BoundParam`. `value` is the accepted strict-form string, stored verbatim
+/// (never re-normalized — see `ArgKind::parse`).
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub struct ConstructionArg {
+    pub name: String,
+    pub value: String,
+}
+
+/// A fallible-`try_args` fault — the construction-arg twin of `BindOpError`,
+/// for the data-level construction surface.
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub enum ArgOpError {
+    /// Args were given, but this type declares none (a `Plain` builder).
+    NotArgBearing,
+    /// A given arg name is not among the declared `ArgSpec`s.
+    UnknownArg(String),
+    /// The same arg name was given more than once.
+    DuplicateArg(String),
+    /// A declared arg has no value in the given set.
+    MissingArg(String),
+    /// A given value failed its declared kind's strict-form parse.
+    BadValue { arg: String, kind: ArgKind, got: String },
+}
+
+/// The args-channel state of a [`PrimitiveBuilder`] (private: callers only
+/// ever observe it through `arg_specs`/`construction_args`/`is_pending`).
+enum ArgsState {
+    /// No construction args declared (every existing node, unaffected).
+    Plain,
+    /// An arg-bearing recipe: declared `ArgSpec`s and the `make` that turns a
+    /// parsed value set into the real, configured builder.
+    Pending {
+        specs: &'static [ArgSpec],
+        #[allow(clippy::type_complexity)]
+        make: fn(&[(String, ArgValue)]) -> PrimitiveBuilder,
+    },
+    /// A configured arg-bearing builder: the accepted, verbatim (name, value)
+    /// pairs — the render/serialize surface (`construction_args`).
+    Configured { values: Vec<ConstructionArg> },
+}
+
 /// A node's declared interface: its inputs (in order) and its output record — an
 /// ordered list of named base columns; length 1 is a scalar (the degenerate
 /// case), and an **empty** `output` (`vec![]`) declares a **pure consumer**
@@ -844,6 +1075,132 @@ mod tests {
     fn doc_gate_accepts_a_meaning_line() {
         assert_eq!(doc_gate("EMA", "exponential moving average over the input series"), Ok(()));
     }
+
+    // --- construction args (ArgKind/ArgSpec/ArgValue/ConstructionArg/ArgOpError) ---
+
+    const DEMO_ARG_SPECS: &[ArgSpec] =
+        &[ArgSpec { name: "tz", kind: ArgKind::Tz }, ArgSpec { name: "open", kind: ArgKind::TimeOfDay }];
+
+    /// A minimal `make`: the fixture does not need `values` to shape a real
+    /// schema (that's `Session::make`'s job, Task 2) — it only proves
+    /// `try_args` reaches `make` with parsed values and carries the result
+    /// forward as `Configured`.
+    fn demo_make(values: &[(String, ArgValue)]) -> PrimitiveBuilder {
+        let _ = values;
+        PrimitiveBuilder::new(
+            "Demo",
+            NodeSchema { inputs: vec![], output: vec![], params: vec![], doc: "test-only arg-bearing schema" },
+            |_| Box::new(Bare),
+        )
+    }
+
+    fn demo_pending() -> PrimitiveBuilder {
+        PrimitiveBuilder::pending("Demo", "test-only arg-bearing schema", DEMO_ARG_SPECS, demo_make)
+    }
+
+    #[test]
+    fn try_args_not_arg_bearing_on_a_plain_builder_with_args() {
+        let plain = PrimitiveBuilder::new("Bare", NodeSchema::default(), |_| Box::new(Bare));
+        assert_eq!(
+            plain.try_args(&[("x".into(), "1".into())]).err(),
+            Some(ArgOpError::NotArgBearing),
+        );
+    }
+
+    #[test]
+    fn try_args_plain_with_empty_raw_is_ok_unchanged() {
+        let plain = PrimitiveBuilder::new(
+            "Bare",
+            NodeSchema { inputs: vec![], output: vec![], params: vec![], doc: "plain doc" },
+            |_| Box::new(Bare),
+        );
+        let after = plain.try_args(&[]).expect("empty raw against a Plain builder is Ok(self)");
+        assert_eq!(after.schema().doc, "plain doc");
+        assert!(after.construction_args().is_empty());
+    }
+
+    #[test]
+    fn try_args_unknown_arg_names_the_first_unknown() {
+        assert_eq!(
+            demo_pending()
+                .try_args(&[("nope".into(), "x".into()), ("tz".into(), "Europe/Berlin".into())])
+                .err(),
+            Some(ArgOpError::UnknownArg("nope".into())),
+        );
+    }
+
+    #[test]
+    fn try_args_duplicate_arg_names_the_repeated_name() {
+        assert_eq!(
+            demo_pending()
+                .try_args(&[
+                    ("tz".into(), "Europe/Berlin".into()),
+                    ("tz".into(), "Europe/Berlin".into()),
+                    ("open".into(), "09:30".into()),
+                ])
+                .err(),
+            Some(ArgOpError::DuplicateArg("tz".into())),
+        );
+    }
+
+    #[test]
+    fn try_args_missing_arg_names_the_first_missing_in_spec_order() {
+        assert_eq!(
+            demo_pending().try_args(&[("tz".into(), "Europe/Berlin".into())]).err(),
+            Some(ArgOpError::MissingArg("open".into())),
+        );
+    }
+
+    #[test]
+    fn try_args_bad_value_names_arg_kind_and_the_rejected_string() {
+        assert_eq!(
+            demo_pending()
+                .try_args(&[("tz".into(), "berlin".into()), ("open".into(), "09:30".into())])
+                .err(),
+            Some(ArgOpError::BadValue { arg: "tz".into(), kind: ArgKind::Tz, got: "berlin".into() }),
+        );
+    }
+
+    /// Strict form IS the canonical form (spec §Closedness): no normalization
+    /// layer, so a near-miss string refuses rather than being rewritten.
+    #[test]
+    fn arg_kind_parse_strict_form_refusals_and_accepts() {
+        assert!(ArgKind::TimeOfDay.parse("9:30").is_err(), "not zero-padded");
+        assert!(ArgKind::Tz.parse("berlin").is_err(), "not the exact IANA name");
+        assert!(ArgKind::Count.parse("02").is_err(), "leading zero");
+        assert!(ArgKind::TimeOfDay.parse("09:30").is_ok());
+        assert!(ArgKind::Tz.parse("Europe/Berlin").is_ok());
+        assert!(ArgKind::Count.parse("2").is_ok());
+    }
+
+    #[test]
+    fn try_args_accepts_a_valid_set_and_echoes_verbatim_pairs() {
+        let configured = demo_pending()
+            .try_args(&[("tz".into(), "America/New_York".into()), ("open".into(), "09:30".into())])
+            .expect("a full valid set configures");
+        assert!(!configured.is_pending());
+        assert_eq!(
+            configured.construction_args(),
+            &[
+                ConstructionArg { name: "tz".into(), value: "America/New_York".into() },
+                ConstructionArg { name: "open".into(), value: "09:30".into() },
+            ],
+        );
+    }
+
+    #[test]
+    fn pending_arg_specs_are_visible_before_configuration() {
+        let pending = demo_pending();
+        assert!(pending.is_pending());
+        assert_eq!(pending.arg_specs().iter().map(|s| s.name).collect::<Vec<_>>(), ["tz", "open"]);
+        assert!(pending.construction_args().is_empty());
+    }
+
+    #[test]
+    #[should_panic(expected = "unconfigured")]
+    fn pending_build_panics() {
+        let _ = demo_pending().build(&[]);
+    }
 }
 
 #[cfg(test)]

crates/aura-engine/src/blueprint.rs

@@ -195,6 +195,38 @@ pub struct GangMember {
     pub name: String,
 }
 
+/// Deterministic shape gate for authored composite render names (#331) —
+/// shape only, never content judgement (C29 discipline): non-empty, no path
+/// separator (`/` or `\`), and not the special segments `.` or `..`. The rule
+/// exists because the name keys a trace directory on disk unsanitized
+/// (`traces/<name>/`, `crates/aura-registry/src/trace_store.rs`). Applied at
+/// both data-borne birth routes for a name (the skeptic's two-seam finding):
+/// the `Op::Name` op intake (`construction.rs`) and the CLI's
+/// blueprint-envelope root-name intake — never at store read-back (C29:
+/// registered artifacts are never retroactively invalidated), and never on
+/// the Rust builder API (`GraphBuilder::new`, role-2 native authoring).
+pub fn name_gate(name: &str) -> Result<(), NameGateFault> {
+    if name.is_empty() {
+        return Err(NameGateFault::Empty);
+    }
+    if name.contains('/') || name.contains('\\') {
+        return Err(NameGateFault::ContainsSeparator);
+    }
+    if name == "." || name == ".." {
+        return Err(NameGateFault::DotSegment);
+    }
+    Ok(())
+}
+
+/// The [`name_gate`] shape violation — WHY the name was refused; the caller
+/// already holds the offending name (WHAT) to build a message from.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum NameGateFault {
+    Empty,
+    ContainsSeparator,
+    DotSegment,
+}
+
 /// A reusable sub-graph fragment compiled away by inlining (C9/C23). It is **not**
 /// a [`Node`]: it is never `eval`'d. It holds interior items (local indices),
 /// interior edges (local indices), input roles (role `r` fans into the interior
@@ -1519,6 +1551,19 @@ mod tests {
     use aura_strategy::Bias;
     use std::sync::mpsc;
 
+    /// `name_gate` (#331) unit table: an ordinary name passes; an empty
+    /// name, one containing either path separator, and the two dot segments
+    /// each fault with their own fault variant.
+    #[test]
+    fn name_gate_accepts_ordinary_names_and_refuses_shape_violations() {
+        assert_eq!(name_gate("ny_momentum"), Ok(()));
+        assert_eq!(name_gate(""), Err(NameGateFault::Empty));
+        assert_eq!(name_gate("a/b"), Err(NameGateFault::ContainsSeparator));
+        assert_eq!(name_gate("a\\b"), Err(NameGateFault::ContainsSeparator));
+        assert_eq!(name_gate("."), Err(NameGateFault::DotSegment));
+        assert_eq!(name_gate(".."), Err(NameGateFault::DotSegment));
+    }
+
     /// One knob fanning into two sibling open params passes the gate; the
     /// value carries the gang table.
     #[test]
@@ -1821,7 +1866,7 @@ mod tests {
         Composite::new(
             "sig3",
             vec![
-                LinComb::builder(2).into(),
+                LinComb::configured(2).into(),
                 Bias::builder().into(),
                 Sma::builder().named("c").into(),
             ],
@@ -1860,7 +1905,7 @@ mod tests {
         Composite::new(
             "sig3",
             vec![
-                LinComb::builder(2).into(),
+                LinComb::configured(2).into(),
                 Bias::builder().into(),
                 Sma::builder().named("c").into(),
             ],
@@ -3233,7 +3278,7 @@ mod tests {
         // outer composite "strategy": the inner composite + a LinComb([1,-1])
         let strategy = Composite::new(
             "strategy",
-            vec![BlueprintNode::Composite(fast_slow), LinComb::builder(2).into()],
+            vec![BlueprintNode::Composite(fast_slow), LinComb::configured(2).into()],
             vec![],
             vec![Role { name: "price".into(), targets: vec![Target { node: 0, slot: 0 }], source: None }],
             vec![OutField { node: 0, field: 0, name: "out".into() }],
@@ -3441,7 +3486,7 @@ mod tests {
         // outer composite "strategy": the inner composite + a LinComb([1,-1])
         let strategy = Composite::new(
             "strategy",
-            vec![BlueprintNode::Composite(fast_slow), LinComb::builder(2).into()],
+            vec![BlueprintNode::Composite(fast_slow), LinComb::configured(2).into()],
             // fan fast_slow's output into both LinComb terms so every interior slot
             // is wired (the totality check, cycle 0040); param order is unaffected.
             vec![
@@ -3501,7 +3546,7 @@ mod tests {
         use aura_std::{LinComb, Sma};
         let bp = Composite::new(
             "root",
-            vec![Sma::builder().into(), LinComb::builder(2).into()],
+            vec![Sma::builder().into(), LinComb::configured(2).into()],
             vec![],
             vec![],
             vec![], // output

crates/aura-engine/src/blueprint_serde.rs

@@ -7,18 +7,29 @@
 //! closure and the declared schema are re-derived on load from the injected
 //! resolver. This is the inverse of the lossy render half (`model_to_json`); it
 //! carries no node logic (C17) and references a closed vocabulary (C24).
+//!
+//! Construction args (#271) are structural, id-bearing data — like `bound`
+//! values, unlike debug-symbol names — so `strip_debug_symbols` leaves
+//! `PrimitiveData.args` untouched.
 
 use crate::blueprint::{BlueprintNode, Composite, Gang, OutField, Role};
 use crate::harness::Edge;
-use aura_core::{BoundParam, PrimitiveBuilder};
+use aura_core::{BoundParam, ConstructionArg, PrimitiveBuilder};
 
-/// The format version the loader understands. Bumped only by a load-bearing
-/// (Tier-2) change; additive optional fields do not bump it (#156). Pre-ship
-/// dormancy (#61, 2026-07-10): while the project is unshipped every document
-/// lives in-repo and reader/writer change atomically, so the Tier-2 bump
-/// discipline activates at the first external ship — which consciously
-/// freezes v1 (gangs included).
-pub const BLUEPRINT_FORMAT_VERSION: u32 = 1;
+/// The CEILING format version this build's loader understands (and the
+/// writer may ever emit) — bumped only by a load-bearing (Tier-2) change;
+/// additive optional fields do not bump it (#156). Pre-ship dormancy (#61,
+/// 2026-07-10): while the project is unshipped every document lives in-repo
+/// and reader/writer change atomically, so the Tier-2 bump discipline
+/// activates at the first external ship.
+///
+/// #271 (data-driven version): the writer no longer emits a single fixed
+/// version. A document emits `1` when args-free (byte-identical to every
+/// pre-#271 document — content ids stable, C18) and `2` the moment any
+/// primitive, at any nesting depth, carries construction `args` — the
+/// must-understand signal a pre-#271 loader needs. The loader accepts the
+/// closed range `1..=BLUEPRINT_FORMAT_VERSION`.
+pub const BLUEPRINT_FORMAT_VERSION: u32 = 2;
 
 /// Top-level envelope: the version is read before the payload is interpreted.
 #[derive(serde::Serialize, serde::Deserialize)]
@@ -61,17 +72,33 @@ pub enum NodeData {
 }
 
 /// A primitive node as data: its compiled-in type identity, optional instance
-/// name, and bound params. The schema + build closure are re-derived on load.
+/// name, its accepted construction args (#271), and bound params. The schema
+/// + build closure are re-derived on load.
 #[derive(serde::Serialize, serde::Deserialize)]
 pub struct PrimitiveData {
     #[serde(rename = "type")]
     pub type_id: String,
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub name: Option<String>,
+    /// The consumed `(name, value)` construction-arg pairs (#271) — the
+    /// id-bearing, serialized twin of `bound`. Additive-optional: absent
+    /// (empty) for every args-free primitive, so a document with no args
+    /// anywhere stays byte-identical to its pre-#271 form.
+    #[serde(default, skip_serializing_if = "Vec::is_empty")]
+    pub args: Vec<ArgData>,
     #[serde(default, skip_serializing_if = "Vec::is_empty")]
     pub bound: Vec<BoundParam>,
 }
 
+/// One serialized construction-arg pair (#271) — the wire twin of
+/// [`aura_core::ConstructionArg`]: `value` is the accepted strict-form
+/// string, stored verbatim (never re-normalized).
+#[derive(Clone, serde::Serialize, serde::Deserialize)]
+pub struct ArgData {
+    pub name: String,
+    pub value: String,
+}
+
 /// Serializer failure (typed, named).
 #[derive(Debug)]
 pub enum SerializeError {
@@ -111,9 +138,19 @@ fn project_node(n: &BlueprintNode) -> NodeData {
             // construction once a multi-param node enters the vocabulary.
             let mut bound = b.bound_params().to_vec();
             bound.sort_by_key(|bp| bp.pos);
+            // Construction args (#271) are declared in a fixed `ArgSpec` order
+            // (not player-chosen like binds), so no re-canonicalization is
+            // needed — `construction_args()` already returns them in that
+            // deterministic order.
+            let args: Vec<ArgData> = b
+                .construction_args()
+                .iter()
+                .map(|ConstructionArg { name, value }| ArgData { name: name.clone(), value: value.clone() })
+                .collect();
             NodeData::Primitive(PrimitiveData {
                 type_id: b.label(),
                 name: b.instance_name().map(str::to_string),
+                args,
                 bound,
             })
         }
@@ -121,8 +158,32 @@ fn project_node(n: &BlueprintNode) -> NodeData {
     }
 }
 
+/// Any primitive, at any nesting depth, carries construction args (#271) —
+/// the must-understand signal for the data-driven version (spec §Data-driven
+/// format version).
+fn has_args(b: &CompositeData) -> bool {
+    b.nodes.iter().any(|n| match n {
+        NodeData::Primitive(p) => !p.args.is_empty(),
+        NodeData::Composite(c) => has_args(c),
+    })
+}
+
+/// The version THIS document must declare (#271): `1` for an args-free
+/// document (byte-identical to every pre-#271 document, C18) or `2` the
+/// moment any primitive anywhere carries args — never the fixed
+/// `BLUEPRINT_FORMAT_VERSION` ceiling.
+fn document_version(b: &CompositeData) -> u32 {
+    if has_args(b) {
+        2
+    } else {
+        1
+    }
+}
+
 fn build_doc(c: &Composite) -> BlueprintDoc {
-    BlueprintDoc { format_version: BLUEPRINT_FORMAT_VERSION, blueprint: project(c) }
+    let blueprint = project(c);
+    let format_version = document_version(&blueprint);
+    BlueprintDoc { format_version, blueprint }
 }
 
 fn serialize_doc(doc: &BlueprintDoc) -> Result<String, SerializeError> {
@@ -200,11 +261,16 @@ pub enum LoadError {
     /// addition needs finer granularity than a version bump.
     UnsupportedVersion { found: u32, supported: u32 },
     /// `resolve` returned `None` for a serialized `type_id` (outside the injected
-    /// vocabulary — unknown node, or a construction-arg/sink node not in #155's set).
+    /// vocabulary — unknown node, or a sink node not in #155's set).
     UnknownNodeType(String),
     /// The document's gangs section fails structural validation against its
     /// own nodes (a hand-edited or corrupted document).
     Gang(crate::blueprint::CompileError),
+    /// A primitive's `args` (#271) failed `try_args`: unknown/duplicate/
+    /// missing arg, a malformed value, OR (the pending-with-no-args refusal)
+    /// an arg-bearing type serialized/hand-written with an empty `args` —
+    /// a document naming an arg-bearing type without args must not load.
+    BadArg(aura_core::ArgOpError),
 }
 
 fn reconstruct(
@@ -220,6 +286,15 @@ fn reconstruct(
                 if let Some(n) = &p.name {
                     b = b.named(n);
                 }
+                // Apply construction args (#271) BEFORE bound params — the
+                // `try_args` seam. An arg-bearing type with no `args` in the
+                // document refuses HERE as `MissingArg` (no pending builder
+                // ever reaches `bind`/enters the built graph); a `Plain` type
+                // has empty `p.args`, so this is `Ok(self)` unchanged for
+                // every pre-#271 document.
+                let args: Vec<(String, String)> =
+                    p.args.iter().map(|a| (a.name.clone(), a.value.clone())).collect();
+                b = b.try_args(&args).map_err(LoadError::BadArg)?;
                 // Re-apply bound params BY NAME. The effective param vector is
                 // order-independent (each `bind` computes its slot against the
                 // shrunk schema); ascending original `pos` is the canonical order.
@@ -251,7 +326,9 @@ pub fn blueprint_from_json(
     resolve: &dyn Fn(&str) -> Option<PrimitiveBuilder>,
 ) -> Result<Composite, LoadError> {
     let doc: BlueprintDoc = serde_json::from_str(data).map_err(LoadError::Json)?;
-    if doc.format_version != BLUEPRINT_FORMAT_VERSION {
+    // #271: the loader accepts the closed range 1..=BLUEPRINT_FORMAT_VERSION
+    // (today 1..=2) — a data-driven ceiling, not a single fixed version.
+    if !(1..=BLUEPRINT_FORMAT_VERSION).contains(&doc.format_version) {
         return Err(LoadError::UnsupportedVersion {
             found: doc.format_version,
             supported: BLUEPRINT_FORMAT_VERSION,
@@ -266,7 +343,8 @@ mod tests {
     use crate::blueprint::{Composite, GangMember, OutField, Role};
     use crate::harness::{Edge, Target};
     use crate::VecSource; // crate-root re-export (blueprint.rs tests import it the same way, e.g. :923)
-    use aura_core::{Scalar, ScalarKind, Timestamp};
+    use aura_core::{ArgOpError, Scalar, ScalarKind, Timestamp};
+    use aura_market::Session;
     use aura_std::{Recorder, Sma, Sub};
     use aura_strategy::Bias;
     use std::sync::mpsc;
@@ -436,11 +514,14 @@ mod tests {
         assert!(matches!(err, LoadError::UnknownNodeType(t) if t == "NoSuchNode"));
     }
 
+    /// #271 flipped pin (named contract change, not a regression): `format_version: 2`
+    /// used to be refused (v1 was the only understood version); now that v2 loads
+    /// (the args-bearing tier), only a version PAST the new ceiling is unsupported.
     #[test]
     fn unsupported_version_fails_named() {
-        let json = r#"{"format_version":2,"blueprint":{"name":"x","nodes":[]}}"#;
+        let json = r#"{"format_version":3,"blueprint":{"name":"x","nodes":[]}}"#;
         let err = blueprint_from_json(json, &|t| aura_vocabulary::std_vocabulary(t)).err().unwrap();
-        assert!(matches!(err, LoadError::UnsupportedVersion { found: 2, supported: 1 }));
+        assert!(matches!(err, LoadError::UnsupportedVersion { found: 3, supported: 2 }));
     }
 
     #[test]
@@ -813,4 +894,127 @@ mod tests {
             "the gang itself is identity-bearing"
         );
     }
+
+    // ---- construction args (#271) --------------------------------------
+
+    // A single-node composite around an arg-configured `Session` (arity-free —
+    // a `trigger` input role feeds it, its `bars_since_open` output re-exports).
+    fn session_arg_fixture(tz: chrono_tz::Tz) -> Composite {
+        Composite::new(
+            "sess",
+            vec![Session::configured(9, 30, tz, 15).into()],
+            vec![],
+            vec![Role {
+                name: "trigger".into(),
+                targets: vec![Target { node: 0, slot: 0 }],
+                source: Some(ScalarKind::F64),
+            }],
+            vec![OutField { node: 0, field: 0, name: "bars".into() }],
+        )
+    }
+
+    /// #271 acceptance (engine layer): an args-bearing composite serializes its
+    /// construction-arg pairs, declares `format_version: 2` (the data-driven
+    /// must-understand tier, spec §Data-driven format version), and round-trips
+    /// byte-stably through load -> re-serialize.
+    #[test]
+    fn args_round_trip_preserves_pairs_and_version_2() {
+        let c = session_arg_fixture(chrono_tz::Europe::Berlin);
+        let json = blueprint_to_json(&c).expect("serializes");
+        assert!(json.contains(r#""format_version":2"#), "args-bearing document is version 2: {json}");
+        assert!(
+            json.contains(r#""args":[{"name":"tz","value":"Europe/Berlin"},{"name":"open","value":"09:30"}]"#),
+            "carries the verbatim accepted arg pairs: {json}"
+        );
+        let loaded = blueprint_from_json(&json, &fixture_resolver()).expect("loads");
+        assert_eq!(
+            blueprint_to_json(&loaded).expect("re-serializes"),
+            json,
+            "args round-trip byte-stably"
+        );
+    }
+
+    /// #271 acceptance (C18 stability): a document with NO args anywhere stays
+    /// version 1 and byte-identical to its pre-#271 canonical form — the exact
+    /// golden `signal_serializes_to_canonical_golden` already pins, re-asserted
+    /// here under the #271-specific test name the plan names.
+    #[test]
+    fn args_free_document_serializes_byte_identical_and_version_1() {
+        let signal = crate::test_fixtures::sink_free_sma_cross_signal();
+        let json = blueprint_to_json(&signal).expect("serializes");
+        assert!(json.starts_with(r#"{"format_version":1,"#), "args-free document stays version 1: {json}");
+        assert!(!json.contains("\"args\""), "an args-free document emits no args key: {json}");
+        let golden = r#"{"format_version":1,"blueprint":{"name":"sma_cross","nodes":[{"primitive":{"type":"SMA","name":"fast","bound":[{"pos":0,"name":"length","kind":"I64","value":{"I64":2}}]}},{"primitive":{"type":"SMA","name":"slow"}},{"primitive":{"type":"Sub"}},{"primitive":{"type":"Bias"}}],"edges":[{"from":0,"to":2,"slot":0,"from_field":0},{"from":1,"to":2,"slot":1,"from_field":0},{"from":2,"to":3,"slot":0,"from_field":0}],"input_roles":[{"name":"price","targets":[{"node":0,"slot":0},{"node":1,"slot":0}]}],"output":[{"node":3,"field":0,"name":"bias"}]}}"#;
+        assert_eq!(json, golden, "byte-identical to the pre-#271 canonical form (content ids stable, C18)");
+    }
+
+    /// #271 (nested propagation): an args-bearing primitive nested INSIDE an
+    /// outer composite still trips the outer document's version to 2 — the
+    /// version walk recurses through `NodeData::Composite`, not just the
+    /// top-level node list.
+    #[test]
+    fn nested_spliced_args_composite_is_version_2() {
+        let inner = session_arg_fixture(chrono_tz::Europe::Berlin);
+        let outer = Composite::new(
+            "outer",
+            vec![crate::blueprint::BlueprintNode::Composite(inner)],
+            vec![],
+            vec![Role {
+                name: "trigger".into(),
+                targets: vec![Target { node: 0, slot: 0 }],
+                source: Some(ScalarKind::F64),
+            }],
+            vec![OutField { node: 0, field: 0, name: "bars".into() }],
+        );
+        let json = blueprint_to_json(&outer).expect("serializes");
+        assert!(json.contains(r#""format_version":2"#), "a nested arg-bearing primitive still trips version 2: {json}");
+        assert!(json.contains("\"args\""), "the nested primitive's args survive: {json}");
+    }
+
+    /// #271 (identity is arg-bearing): construction args are structural,
+    /// id-bearing data — like a bound value, unlike a debug-symbol name — so
+    /// two builds differing ONLY in one accepted arg value never share an
+    /// identity JSON, while renaming the composite (a pure debug symbol)
+    /// still does not affect it.
+    #[test]
+    fn identity_json_retains_args() {
+        let berlin = session_arg_fixture(chrono_tz::Europe::Berlin);
+        let paris = session_arg_fixture(chrono_tz::Europe::Paris);
+        assert_ne!(
+            blueprint_identity_json(&berlin).expect("identity-serializes"),
+            blueprint_identity_json(&paris).expect("identity-serializes"),
+            "a differing construction-arg value survives the identity projection"
+        );
+        // renaming the composite (a debug symbol) does not affect identity.
+        let renamed = Composite::new(
+            "sess_renamed",
+            vec![Session::configured(9, 30, chrono_tz::Europe::Berlin, 15).into()],
+            vec![],
+            vec![Role {
+                name: "trigger".into(),
+                targets: vec![Target { node: 0, slot: 0 }],
+                source: Some(ScalarKind::F64),
+            }],
+            vec![OutField { node: 0, field: 0, name: "bars".into() }],
+        );
+        assert_eq!(
+            blueprint_identity_json(&berlin).expect("identity-serializes"),
+            blueprint_identity_json(&renamed).expect("identity-serializes"),
+            "the composite's own debug name does not affect identity"
+        );
+    }
+
+    /// #271 (refuse, don't guess): a hand-written document naming an
+    /// arg-bearing type (`Session`) with NO `args` key refuses on load as
+    /// `LoadError::BadArg(ArgOpError::MissingArg(..))` — a pending builder
+    /// must never silently enter the built graph.
+    #[test]
+    fn loading_arg_bearing_type_without_args_refuses() {
+        let json = r#"{"format_version":1,"blueprint":{"name":"x","nodes":[{"primitive":{"type":"Session"}}]}}"#;
+        let err = blueprint_from_json(json, &fixture_resolver()).err().unwrap();
+        assert!(
+            matches!(&err, LoadError::BadArg(ArgOpError::MissingArg(a)) if a == "tz"),
+            "an arg-bearing type with no args refuses as MissingArg, got {err:?}"
+        );
+    }
 }

crates/aura-engine/src/construction.rs

@@ -13,11 +13,11 @@
 
 use std::collections::{HashMap, HashSet};
 
-use aura_core::{BindOpError, NodeSchema, PrimitiveBuilder, Scalar, ScalarKind};
+use aura_core::{ArgOpError, BindOpError, NodeSchema, PrimitiveBuilder, Scalar, ScalarKind};
 
 use crate::blueprint::{
-    check_param_namespace_injective, edge_kind_check, validate_wiring, BlueprintNode, Composite,
-    Gang, GangMember, OutField, Role, Tap, TapWire,
+    check_param_namespace_injective, edge_kind_check, name_gate, validate_wiring, BlueprintNode,
+    Composite, Gang, GangMember, NameGateFault, OutField, Role, Tap, TapWire,
 };
 use crate::builder::{resolve_input_slot, resolve_output_field, PortResolveError};
 use crate::harness::{Edge, Target};
@@ -32,8 +32,14 @@ pub enum Op {
     Source { role: String, kind: ScalarKind },
     /// Reserve an open input role (wired by an enclosing graph).
     Input { role: String },
-    /// Add a node of `type_id`, optionally named `as_name`, with `bind` params.
-    Add { type_id: String, as_name: Option<String>, bind: Vec<(String, Scalar)> },
+    /// Add a node of `type_id`, optionally named `as_name`, with construction
+    /// `args` (the typed, closed channel — #271) applied BEFORE `bind` params.
+    Add {
+        type_id: String,
+        as_name: Option<String>,
+        args: Vec<(String, String)>,
+        bind: Vec<(String, Scalar)>,
+    },
     /// Fan a role into one or more `"node.slot"` consumers.
     Feed { role: String, into: Vec<String> },
     /// Wire `"node.field"` -> `"node.slot"`.
@@ -58,6 +64,8 @@ pub enum Op {
     /// `bind` is applied path-qualified (e.g. `"sma.length"`), after the
     /// splice.
     Use { ref_id: String, name: Option<String>, bind: Vec<(String, Scalar)> },
+    /// Set the composite's render name (#331). At most once per script.
+    Name { name: String },
 }
 
 /// A per-op construction fault, by-identifier so the cause names the op.
@@ -91,6 +99,11 @@ pub enum OpError {
     /// blueprint non-acyclic (domain invariant 5 / ledger C9).
     WouldCycle { from: String, to: String },
     BadParam { node: String, err: BindOpError },
+    /// A construction-arg fault (#271): an arg-bearing type's `args` failed
+    /// `try_args` (unknown/duplicate/missing arg, or a malformed value) — or a
+    /// `Plain` type was given args it does not declare. By-identifier, naming
+    /// the offending node.
+    BadArg { node: String, err: ArgOpError },
     /// Holistic totality fault, by-identifier: an interior input slot covered by
     /// no edge or role target (the finalize 0-cover arm).
     UnconnectedPort { node: String, slot: String },
@@ -113,6 +126,13 @@ pub enum OpError {
     /// resolves and fetches before replay, refusing there on a miss), but
     /// total: a bare `replay`/`GraphSession` caller can still hit it.
     UnknownSubgraph { ref_id: String },
+    /// A second `name` op — the render name is declared at most once (mirrors
+    /// `DuplicateDoc`).
+    DuplicateName,
+    /// A `name` op's `name` (or, at the CLI's blueprint-envelope intake, an
+    /// envelope's root name) failed the deterministic `name_gate` shape check
+    /// (#331). Carries the offending name and the shape fault detail.
+    BadName { name: String, fault: NameGateFault },
 }
 
 /// A per-op-fallible blueprint accumulator. Holds the same interior data a
@@ -142,6 +162,11 @@ pub struct GraphSession<'v> {
     coverage: HashMap<(usize, usize), usize>,
     gangs: Vec<Gang>,
     doc: Option<String>,
+    /// At-most-once guard for `Op::Name` (#331), mirroring `doc`'s own
+    /// uniqueness posture but tracked separately (`name` itself is always
+    /// populated, seeded from `::new`'s `name` argument, so it cannot double
+    /// as its own "was it authored" flag).
+    name_authored: bool,
 }
 
 impl<'v> GraphSession<'v> {
@@ -171,6 +196,7 @@ impl<'v> GraphSession<'v> {
             coverage: HashMap::new(),
             gangs: Vec::new(),
             doc: None,
+            name_authored: false,
         }
     }
 
@@ -180,7 +206,7 @@ impl<'v> GraphSession<'v> {
         match op {
             Op::Source { role, kind } => self.add_role(role, Some(kind)),
             Op::Input { role } => self.add_role(role, None),
-            Op::Add { type_id, as_name, bind } => self.add_node(type_id, as_name, bind),
+            Op::Add { type_id, as_name, args, bind } => self.add_node(type_id, as_name, args, bind),
             Op::Feed { role, into } => self.feed(role, into),
             Op::Connect { from, to } => self.connect(from, to),
             Op::Expose { from, as_name } => self.expose(from, as_name),
@@ -194,9 +220,29 @@ impl<'v> GraphSession<'v> {
                 Ok(())
             }
             Op::Use { ref_id, name, bind } => self.use_subgraph(ref_id, name, bind),
+            Op::Name { name } => self.set_name(name),
         }
     }
 
+    /// `Op::Name` (#331): set the composite's render name — the op-script's
+    /// data-borne twin of `replay`'s seeded default name. Guarded by (a)
+    /// at-most-once (mirrors the `doc` op's uniqueness guard just above) and
+    /// (b) the shared deterministic shape gate (`name_gate`) — the SAME gate
+    /// the CLI's blueprint-envelope intake applies to a hand-edited
+    /// envelope's root name (the other data-borne birth route, skeptic
+    /// finding minuted on #331).
+    fn set_name(&mut self, name: String) -> Result<(), OpError> {
+        if self.name_authored {
+            return Err(OpError::DuplicateName);
+        }
+        if let Err(fault) = name_gate(&name) {
+            return Err(OpError::BadName { name, fault });
+        }
+        self.name = name;
+        self.name_authored = true;
+        Ok(())
+    }
+
     /// `Op::Use` (#317): fetch a registered blueprint through the injected
     /// `subgraph` resolver, rename it to the instance identifier, apply its
     /// path-qualified `bind` entries, and push it as an ordinary
@@ -248,11 +294,17 @@ impl<'v> GraphSession<'v> {
         &mut self,
         type_id: String,
         as_name: Option<String>,
+        args: Vec<(String, String)>,
         bind: Vec<(String, Scalar)>,
     ) -> Result<(), OpError> {
         let mut builder =
             (self.vocab)(&type_id).ok_or_else(|| OpError::UnknownNodeType(type_id.clone()))?;
         let id = as_name.unwrap_or_else(|| builder.node_name());
+        // Construction args apply BEFORE the bind loop (spec §aura-engine): a
+        // pending arg-bearing builder with no args therefore refuses here as
+        // `MissingArg` — no pending builder ever reaches `try_bind`/enters the
+        // graph.
+        builder = builder.try_args(&args).map_err(|err| OpError::BadArg { node: id.clone(), err })?;
         for (slot, value) in bind {
             builder = builder
                 .try_bind(&slot, value)
@@ -564,7 +616,7 @@ pub fn replay(
 mod tests {
     use super::{GraphSession, Op, OpError};
     use crate::blueprint::{BlueprintNode, Composite, Role};
-    use aura_core::{BindOpError, Scalar, ScalarKind};
+    use aura_core::{ArgKind, ArgOpError, BindOpError, Scalar, ScalarKind};
     use aura_vocabulary::std_vocabulary;
 
     fn session(name: &str) -> GraphSession<'static> {
@@ -575,7 +627,7 @@ mod tests {
     fn add_unknown_type_rejected_at_op() {
         let mut s = session("g");
         assert_eq!(
-            s.apply(Op::Add { type_id: "Nope".into(), as_name: None, bind: vec![] }),
+            s.apply(Op::Add { type_id: "Nope".into(), as_name: None, args: vec![], bind: vec![] }),
             Err(OpError::UnknownNodeType("Nope".into()))
         );
     }
@@ -583,9 +635,9 @@ mod tests {
     #[test]
     fn add_duplicate_identifier_rejected() {
         let mut s = session("g");
-        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("x".into()), bind: vec![] }).unwrap();
+        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("x".into()), args: vec![], bind: vec![] }).unwrap();
         assert_eq!(
-            s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("x".into()), bind: vec![] }),
+            s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("x".into()), args: vec![], bind: vec![] }),
             Err(OpError::DuplicateIdentifier("x".into()))
         );
     }
@@ -597,7 +649,7 @@ mod tests {
             s.apply(Op::Add {
                 type_id: "SMA".into(),
                 as_name: Some("fast".into()),
-                bind: vec![("length".into(), Scalar::f64(2.0))], // wrong kind (i64 param)
+                args: vec![], bind: vec![("length".into(), Scalar::f64(2.0))], // wrong kind (i64 param)
             }),
             Err(OpError::BadParam {
                 node: "fast".into(),
@@ -624,9 +676,9 @@ mod tests {
     fn scaffold() -> GraphSession<'static> {
         let mut s = session("g");
         s.apply(Op::Source { role: "price".into(), kind: ScalarKind::F64 }).unwrap();
-        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("fast".into()), bind: vec![] }).unwrap();
-        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("slow".into()), bind: vec![] }).unwrap();
-        s.apply(Op::Add { type_id: "Sub".into(), as_name: None, bind: vec![] }).unwrap();
+        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("fast".into()), args: vec![], bind: vec![] }).unwrap();
+        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("slow".into()), args: vec![], bind: vec![] }).unwrap();
+        s.apply(Op::Add { type_id: "Sub".into(), as_name: None, args: vec![], bind: vec![] }).unwrap();
         s
     }
 
@@ -653,8 +705,8 @@ mod tests {
     fn connect_kind_mismatch_rejected_at_op() {
         // Gt produces bool; Bias.signal consumes f64 -> eager kind mismatch
         let mut s = session("g");
-        s.apply(Op::Add { type_id: "Gt".into(), as_name: None, bind: vec![] }).unwrap();
-        s.apply(Op::Add { type_id: "Bias".into(), as_name: None, bind: vec![] }).unwrap();
+        s.apply(Op::Add { type_id: "Gt".into(), as_name: None, args: vec![], bind: vec![] }).unwrap();
+        s.apply(Op::Add { type_id: "Bias".into(), as_name: None, args: vec![], bind: vec![] }).unwrap();
         let r = s.apply(Op::Connect { from: "gt.value".into(), to: "bias.signal".into() });
         assert!(matches!(
             r,
@@ -820,9 +872,9 @@ mod tests {
         use crate::harness::FlatTap;
         let ops = vec![
             Op::Source { role: "price".into(), kind: ScalarKind::F64 },
-            Op::Add { type_id: "SMA".into(), as_name: Some("fast".into()), bind: vec![] },
-            Op::Add { type_id: "SMA".into(), as_name: Some("slow".into()), bind: vec![] },
-            Op::Add { type_id: "Sub".into(), as_name: None, bind: vec![] },
+            Op::Add { type_id: "SMA".into(), as_name: Some("fast".into()), args: vec![], bind: vec![] },
+            Op::Add { type_id: "SMA".into(), as_name: Some("slow".into()), args: vec![], bind: vec![] },
+            Op::Add { type_id: "Sub".into(), as_name: None, args: vec![], bind: vec![] },
             Op::Feed { role: "price".into(), into: vec!["fast.series".into(), "slow.series".into()] },
             Op::Connect { from: "fast.value".into(), to: "sub.lhs".into() },
             Op::Connect { from: "slow.value".into(), to: "sub.rhs".into() },
@@ -842,10 +894,10 @@ mod tests {
     fn gang_op_projects_the_param_space() {
         let ops = vec![
             Op::Source { role: "price".into(), kind: ScalarKind::F64 },
-            Op::Add { type_id: "SMA".into(), as_name: Some("a".into()), bind: vec![] },
-            Op::Add { type_id: "SMA".into(), as_name: Some("b".into()), bind: vec![] },
+            Op::Add { type_id: "SMA".into(), as_name: Some("a".into()), args: vec![], bind: vec![] },
+            Op::Add { type_id: "SMA".into(), as_name: Some("b".into()), args: vec![], bind: vec![] },
             Op::Gang { as_name: "length".into(), into: vec!["a.length".into(), "b.length".into()] },
-            Op::Add { type_id: "Sub".into(), as_name: None, bind: vec![] },
+            Op::Add { type_id: "Sub".into(), as_name: None, args: vec![], bind: vec![] },
             Op::Feed { role: "price".into(), into: vec!["a.series".into(), "b.series".into()] },
             Op::Connect { from: "a.value".into(), to: "sub.lhs".into() },
             Op::Connect { from: "b.value".into(), to: "sub.rhs".into() },
@@ -863,7 +915,7 @@ mod tests {
     /// i64` session-index output, wires its `trigger` input through the ordinary
     /// edge convention, and builds to a finished `Composite`. Reachability is the
     /// whole ask — the node's tz-aware/DST session SEMANTICS are already pinned
-    /// in `aura-std/src/session.rs` and are not re-pinned here. Today the preset
+    /// in `aura-market/src/session.rs` and are not re-pinned here. Today the preset
     /// id is absent from the roster (the base `Session` builder takes structural
     /// construction args, so the zero-arg macro cannot host it), so the lookup
     /// returns `None` and the op-script's `Add` would fail `UnknownNodeType`.
@@ -892,7 +944,7 @@ mod tests {
             Op::Add {
                 type_id: "SessionFrankfurt".into(),
                 as_name: Some("session".into()),
-                bind: vec![("period_minutes".into(), Scalar::i64(15))],
+                args: vec![], bind: vec![("period_minutes".into(), Scalar::i64(15))],
             },
             Op::Feed { role: "trigger".into(), into: vec!["session.trigger".into()] },
             Op::Expose { from: "session.bars_since_open".into(), as_name: "bars".into() },
@@ -909,11 +961,11 @@ mod tests {
         // bound member: `b.length` was bound at Add, so it left the open param
         // list and is unknown to the gang gate, exactly as `try_bind` would see it.
         let mut s = session("g");
-        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("a".into()), bind: vec![] }).unwrap();
+        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("a".into()), args: vec![], bind: vec![] }).unwrap();
         s.apply(Op::Add {
             type_id: "SMA".into(),
             as_name: Some("b".into()),
-            bind: vec![("length".into(), Scalar::i64(5))],
+            args: vec![], bind: vec![("length".into(), Scalar::i64(5))],
         })
         .unwrap();
         assert_eq!(
@@ -923,8 +975,8 @@ mod tests {
 
         // kind mismatch: SMA.length is i64, Bias.scale is f64.
         let mut s = session("g");
-        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("a".into()), bind: vec![] }).unwrap();
-        s.apply(Op::Add { type_id: "Bias".into(), as_name: Some("b".into()), bind: vec![] }).unwrap();
+        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("a".into()), args: vec![], bind: vec![] }).unwrap();
+        s.apply(Op::Add { type_id: "Bias".into(), as_name: Some("b".into()), args: vec![], bind: vec![] }).unwrap();
         let r = s.apply(Op::Gang { as_name: "g".into(), into: vec!["a.length".into(), "b.scale".into()] });
         assert!(
             matches!(r, Err(OpError::GangKindMismatch { expected: ScalarKind::I64, got: ScalarKind::F64, .. })),
@@ -933,9 +985,9 @@ mod tests {
 
         // doubly-ganged member: a.length is already claimed by an earlier gang.
         let mut s = session("g");
-        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("a".into()), bind: vec![] }).unwrap();
-        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("b".into()), bind: vec![] }).unwrap();
-        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("c".into()), bind: vec![] }).unwrap();
+        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("a".into()), args: vec![], bind: vec![] }).unwrap();
+        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("b".into()), args: vec![], bind: vec![] }).unwrap();
+        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("c".into()), args: vec![], bind: vec![] }).unwrap();
         s.apply(Op::Gang { as_name: "lo".into(), into: vec!["a.length".into(), "b.length".into()] }).unwrap();
         assert_eq!(
             s.apply(Op::Gang { as_name: "hi".into(), into: vec!["a.length".into(), "c.length".into()] }),
@@ -944,7 +996,7 @@ mod tests {
 
         // single member: a gang needs at least two.
         let mut s = session("g");
-        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("a".into()), bind: vec![] }).unwrap();
+        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("a".into()), args: vec![], bind: vec![] }).unwrap();
         assert_eq!(
             s.apply(Op::Gang { as_name: "solo".into(), into: vec!["a.length".into()] }),
             Err(OpError::GangArity { gang: "solo".into() })
@@ -952,7 +1004,7 @@ mod tests {
 
         // unknown node: a member names a node that was never added.
         let mut s = session("g");
-        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("a".into()), bind: vec![] }).unwrap();
+        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("a".into()), args: vec![], bind: vec![] }).unwrap();
         assert_eq!(
             s.apply(Op::Gang { as_name: "g".into(), into: vec!["a.length".into(), "ghost.length".into()] }),
             Err(OpError::UnknownIdentifier("ghost".into()))
@@ -985,6 +1037,72 @@ mod tests {
         );
     }
 
+    // ---- Op::Name (#331) -----------------------------------------------
+
+    /// A `name` op sets the finished composite's render name — the property
+    /// the whole op exists for.
+    #[test]
+    fn name_op_sets_the_finished_composite_name() {
+        let mut s = scaffold();
+        s.apply(Op::Name { name: "x".into() }).unwrap();
+        s.apply(Op::Feed { role: "price".into(), into: vec!["fast.series".into(), "slow.series".into()] })
+            .unwrap();
+        s.apply(Op::Connect { from: "fast.value".into(), to: "sub.lhs".into() }).unwrap();
+        s.apply(Op::Connect { from: "slow.value".into(), to: "sub.rhs".into() }).unwrap();
+        s.apply(Op::Expose { from: "sub.value".into(), as_name: "out".into() }).unwrap();
+        let c = s.finish().expect("finishes");
+        assert_eq!(c.name(), "x");
+    }
+
+    /// Byte-compat (#331 AC1): a script that never authors a `name` op keeps
+    /// the seed name `replay`/`GraphSession::new` was given — the CLI's own
+    /// seed stays `"graph"`, unchanged by this op's addition.
+    #[test]
+    fn no_name_op_keeps_the_seeded_replay_name() {
+        let ops = vec![
+            Op::Source { role: "price".into(), kind: ScalarKind::F64 },
+            Op::Add { type_id: "SMA".into(), as_name: Some("a".into()), args: vec![], bind: vec![] },
+            Op::Feed { role: "price".into(), into: vec!["a.series".into()] },
+            Op::Expose { from: "a.value".into(), as_name: "out".into() },
+        ];
+        let c = super::replay("graph", ops, &std_vocabulary, &|_: &str| None).expect("replays");
+        assert_eq!(c.name(), "graph");
+    }
+
+    /// A second `name` op is a fault, not a silent last-wins overwrite —
+    /// mirrors the `doc` op's own at-most-once guard.
+    #[test]
+    fn duplicate_name_op_is_refused() {
+        let mut s = session("g");
+        s.apply(Op::Name { name: "x".into() }).unwrap();
+        assert_eq!(
+            s.apply(Op::Name { name: "y".into() }),
+            Err(OpError::DuplicateName)
+        );
+    }
+
+    /// Shape violations (#331): empty, containing a path separator, and the
+    /// dot segments all fault at the op via the shared `name_gate`.
+    #[test]
+    fn name_op_shape_violations_are_refused() {
+        use crate::blueprint::NameGateFault;
+        let mut s = session("g");
+        assert_eq!(
+            s.apply(Op::Name { name: "".into() }),
+            Err(OpError::BadName { name: "".into(), fault: NameGateFault::Empty })
+        );
+        let mut s = session("g");
+        assert_eq!(
+            s.apply(Op::Name { name: "a/b".into() }),
+            Err(OpError::BadName { name: "a/b".into(), fault: NameGateFault::ContainsSeparator })
+        );
+        let mut s = session("g");
+        assert_eq!(
+            s.apply(Op::Name { name: "..".into() }),
+            Err(OpError::BadName { name: "..".into(), fault: NameGateFault::DotSegment })
+        );
+    }
+
     #[test]
     fn finish_reports_incomplete_on_unwired_slot() {
         // a fully-named scaffold missing the sub.rhs connection -> holistic 0-arm
@@ -1010,7 +1128,7 @@ mod tests {
     fn finish_accepts_an_open_input_role_and_compile_refuses_it() {
         let mut s = session("g");
         s.apply(Op::Input { role: "ext".into() }).unwrap();
-        s.apply(Op::Add { type_id: "Sub".into(), as_name: Some("sub".into()), bind: vec![] }).unwrap();
+        s.apply(Op::Add { type_id: "Sub".into(), as_name: Some("sub".into()), args: vec![], bind: vec![] }).unwrap();
         s.apply(Op::Feed { role: "ext".into(), into: vec!["sub.lhs".into(), "sub.rhs".into()] }).unwrap();
         s.apply(Op::Expose { from: "sub.value".into(), as_name: "out".into() }).unwrap();
         let c = s.finish().expect("finish() no longer gates root-role boundness");
@@ -1030,8 +1148,8 @@ mod tests {
     fn finish_reports_role_kind_mismatch_by_identifier() {
         let mut s = session("g");
         s.apply(Op::Source { role: "price".into(), kind: ScalarKind::F64 }).unwrap();
-        s.apply(Op::Add { type_id: "Sub".into(), as_name: Some("sub".into()), bind: vec![] }).unwrap();
-        s.apply(Op::Add { type_id: "And".into(), as_name: Some("conj".into()), bind: vec![] }).unwrap();
+        s.apply(Op::Add { type_id: "Sub".into(), as_name: Some("sub".into()), args: vec![], bind: vec![] }).unwrap();
+        s.apply(Op::Add { type_id: "And".into(), as_name: Some("conj".into()), args: vec![], bind: vec![] }).unwrap();
         // price fans into sub.lhs (f64) AND conj.a (bool): differing slot kinds.
         s.apply(Op::Feed { role: "price".into(), into: vec!["sub.lhs".into(), "conj.a".into()] }).unwrap();
         let err = s.finish().err().unwrap();
@@ -1065,8 +1183,8 @@ mod tests {
         // — only an acyclicity check can catch it.
         let ops = vec![
             Op::Source { role: "price".into(), kind: ScalarKind::F64 },
-            Op::Add { type_id: "Sub".into(), as_name: Some("a".into()), bind: vec![] },
-            Op::Add { type_id: "Sub".into(), as_name: Some("b".into()), bind: vec![] },
+            Op::Add { type_id: "Sub".into(), as_name: Some("a".into()), args: vec![], bind: vec![] },
+            Op::Add { type_id: "Sub".into(), as_name: Some("b".into()), args: vec![], bind: vec![] },
             Op::Feed { role: "price".into(), into: vec!["a.rhs".into(), "b.rhs".into()] },
             Op::Connect { from: "a.value".into(), to: "b.lhs".into() }, // op 4: a -> b
             Op::Connect { from: "b.value".into(), to: "a.lhs".into() }, // op 5: closes b -> a
@@ -1097,7 +1215,7 @@ mod tests {
         // loop. Both slots covered, role bound — only an acyclicity check catches it.
         let ops = vec![
             Op::Source { role: "price".into(), kind: ScalarKind::F64 },
-            Op::Add { type_id: "Sub".into(), as_name: Some("s".into()), bind: vec![] },
+            Op::Add { type_id: "Sub".into(), as_name: Some("s".into()), args: vec![], bind: vec![] },
             Op::Feed { role: "price".into(), into: vec!["s.rhs".into()] },
             Op::Connect { from: "s.value".into(), to: "s.lhs".into() }, // self-edge
             Op::Expose { from: "s.value".into(), as_name: "out".into() },
@@ -1111,9 +1229,9 @@ mod tests {
     #[test]
     fn replay_stops_at_first_failing_op_naming_index() {
         let ops = vec![
-            Op::Add { type_id: "SMA".into(), as_name: Some("fast".into()), bind: vec![] },
-            Op::Add { type_id: "Nope".into(), as_name: None, bind: vec![] }, // op 1 fails
-            Op::Add { type_id: "Sub".into(), as_name: None, bind: vec![] },
+            Op::Add { type_id: "SMA".into(), as_name: Some("fast".into()), args: vec![], bind: vec![] },
+            Op::Add { type_id: "Nope".into(), as_name: None, args: vec![], bind: vec![] }, // op 1 fails
+            Op::Add { type_id: "Sub".into(), as_name: None, args: vec![], bind: vec![] },
         ];
         // `.err().unwrap()` rather than `.unwrap_err()`: the Ok arm `Composite` is
         // not `Debug` (it holds build closures), which `unwrap_err` would require.
@@ -1141,10 +1259,10 @@ mod tests {
         // (a) op-script replay
         let ops = vec![
             Op::Source { role: "price".into(), kind: ScalarKind::F64 },
-            Op::Add { type_id: "SMA".into(), as_name: Some("fast".into()), bind: vec![] },
-            Op::Add { type_id: "SMA".into(), as_name: Some("slow".into()), bind: vec![] },
-            Op::Add { type_id: "Sub".into(), as_name: None, bind: vec![] },
-            Op::Add { type_id: "Bias".into(), as_name: None, bind: vec![] },
+            Op::Add { type_id: "SMA".into(), as_name: Some("fast".into()), args: vec![], bind: vec![] },
+            Op::Add { type_id: "SMA".into(), as_name: Some("slow".into()), args: vec![], bind: vec![] },
+            Op::Add { type_id: "Sub".into(), as_name: None, args: vec![], bind: vec![] },
+            Op::Add { type_id: "Bias".into(), as_name: None, args: vec![], bind: vec![] },
             Op::Feed { role: "price".into(), into: vec!["fast.series".into(), "slow.series".into()] },
             Op::Connect { from: "fast.value".into(), to: "sub.lhs".into() },
             Op::Connect { from: "slow.value".into(), to: "sub.rhs".into() },
@@ -1189,10 +1307,10 @@ mod tests {
         // (a) op-script: the Task-4 fixture (two SMA + gang + Sub + expose).
         let ops = vec![
             Op::Source { role: "price".into(), kind: ScalarKind::F64 },
-            Op::Add { type_id: "SMA".into(), as_name: Some("a".into()), bind: vec![] },
-            Op::Add { type_id: "SMA".into(), as_name: Some("b".into()), bind: vec![] },
+            Op::Add { type_id: "SMA".into(), as_name: Some("a".into()), args: vec![], bind: vec![] },
+            Op::Add { type_id: "SMA".into(), as_name: Some("b".into()), args: vec![], bind: vec![] },
             Op::Gang { as_name: "length".into(), into: vec!["a.length".into(), "b.length".into()] },
-            Op::Add { type_id: "Sub".into(), as_name: None, bind: vec![] },
+            Op::Add { type_id: "Sub".into(), as_name: None, args: vec![], bind: vec![] },
             Op::Feed { role: "price".into(), into: vec!["a.series".into(), "b.series".into()] },
             Op::Connect { from: "a.value".into(), to: "sub.lhs".into() },
             Op::Connect { from: "b.value".into(), to: "sub.rhs".into() },
@@ -1241,9 +1359,9 @@ mod tests {
         // (a) op-script: an SMA crossover with a tap on the raw spread (sub.value).
         let ops = vec![
             Op::Source { role: "price".into(), kind: ScalarKind::F64 },
-            Op::Add { type_id: "SMA".into(), as_name: Some("fast".into()), bind: vec![] },
-            Op::Add { type_id: "SMA".into(), as_name: Some("slow".into()), bind: vec![] },
-            Op::Add { type_id: "Sub".into(), as_name: Some("sub".into()), bind: vec![] },
+            Op::Add { type_id: "SMA".into(), as_name: Some("fast".into()), args: vec![], bind: vec![] },
+            Op::Add { type_id: "SMA".into(), as_name: Some("slow".into()), args: vec![], bind: vec![] },
+            Op::Add { type_id: "Sub".into(), as_name: Some("sub".into()), args: vec![], bind: vec![] },
             Op::Feed { role: "price".into(), into: vec!["fast.series".into(), "slow.series".into()] },
             Op::Connect { from: "fast.value".into(), to: "sub.lhs".into() },
             Op::Connect { from: "slow.value".into(), to: "sub.rhs".into() },
@@ -1277,6 +1395,71 @@ mod tests {
         assert_eq!(replay_flat.edges, built_flat.edges);
     }
 
+    // ---- construction args (#271) -------------------------------------
+
+    /// `add_node` applies `try_args` AFTER resolve and BEFORE the bind loop
+    /// (spec §aura-engine): an arg-bearing type's `add` op, given a valid
+    /// `args` set, configures the real signature and the subsequent `bind`
+    /// sees the now-real `period_minutes` param — a data-only op-script
+    /// reaches a `Session` for any IANA timezone/open, not just the
+    /// `SessionFrankfurt` preset.
+    #[test]
+    fn add_op_with_args_builds_a_session() {
+        let mut s = session("g");
+        s.apply(Op::Source { role: "trigger".into(), kind: ScalarKind::F64 }).unwrap();
+        assert_eq!(
+            s.apply(Op::Add {
+                type_id: "Session".into(),
+                as_name: Some("ny".into()),
+                args: vec![("tz".into(), "America/New_York".into()), ("open".into(), "09:30".into())],
+                bind: vec![("period_minutes".into(), Scalar::i64(15))],
+            }),
+            Ok(()),
+        );
+        s.apply(Op::Feed { role: "trigger".into(), into: vec!["ny.trigger".into()] }).unwrap();
+        s.apply(Op::Expose { from: "ny.bars_since_open".into(), as_name: "bars".into() }).unwrap();
+        s.finish().expect("an args-configured Session finishes and builds");
+    }
+
+    /// `Session` is arg-bearing (declares `tz`/`open`): an `add` op naming it
+    /// with NO `args` refuses at the op as `BadArg(MissingArg(..))` — the
+    /// pending builder never reaches the bind loop or the graph (spec
+    /// §aura-engine: "a pending resolve with no args therefore fails as
+    /// MissingArg").
+    #[test]
+    fn add_op_arg_bearing_type_without_args_refuses() {
+        let mut s = session("g");
+        assert_eq!(
+            s.apply(Op::Add {
+                type_id: "Session".into(),
+                as_name: Some("ny".into()),
+                args: vec![],
+                bind: vec![],
+            }),
+            Err(OpError::BadArg { node: "ny".into(), err: ArgOpError::MissingArg("tz".into()) }),
+        );
+    }
+
+    /// A malformed arg value (strict-form refusal, spec §Closedness) surfaces
+    /// as `BadArg(BadValue{..})`, naming the arg, its declared `ArgKind`, and
+    /// the rejected string.
+    #[test]
+    fn add_op_bad_tz_refuses() {
+        let mut s = session("g");
+        assert_eq!(
+            s.apply(Op::Add {
+                type_id: "Session".into(),
+                as_name: Some("ny".into()),
+                args: vec![("tz".into(), "not_a_zone".into()), ("open".into(), "09:30".into())],
+                bind: vec![],
+            }),
+            Err(OpError::BadArg {
+                node: "ny".into(),
+                err: ArgOpError::BadValue { arg: "tz".into(), kind: ArgKind::Tz, got: "not_a_zone".into() },
+            }),
+        );
+    }
+
     // ---- Op::Use (#317) -----------------------------------------------
 
     /// A small two-node fixture composite for the `Op::Use` tests (#317): an
@@ -1412,13 +1595,37 @@ mod tests {
     fn use_op_duplicate_instance_identifier_rejected() {
         let subgraph = |_: &str| Some(use_fixture());
         let mut s = GraphSession::new("g", &std_vocabulary, &subgraph);
-        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("gate".into()), bind: vec![] }).unwrap();
+        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("gate".into()), args: vec![], bind: vec![] }).unwrap();
         assert_eq!(
             s.apply(Op::Use { ref_id: "fixture".into(), name: Some("gate".into()), bind: vec![] }),
             Err(OpError::DuplicateIdentifier("gate".into()))
         );
     }
 
+    /// #331 ratifying pin (spec test 5): `use_subgraph`'s instance-identifier
+    /// default (`name: None` -> the fetched composite's own `name()`,
+    /// `construction.rs:221-230` — code-inspected, previously untested since
+    /// every other test in this section passes an explicit instance name)
+    /// actually reaches the session's identifier namespace: `use_fixture()`'s
+    /// own name is "fixture", so with no instance name the spliced ports
+    /// resolve under "fixture.*", not some other placeholder.
+    #[test]
+    fn use_op_with_no_name_defaults_instance_identifier_to_the_fetched_composites_name() {
+        let subgraph = |_: &str| Some(use_fixture());
+        let mut s = GraphSession::new("g", &std_vocabulary, &subgraph);
+        s.apply(Op::Source { role: "price".into(), kind: ScalarKind::F64 }).unwrap();
+        assert_eq!(
+            s.apply(Op::Use { ref_id: "fixture-id".into(), name: None, bind: vec![] }),
+            Ok(())
+        );
+        s.apply(Op::Feed { role: "price".into(), into: vec!["fixture.price".into()] }).unwrap();
+        assert_eq!(
+            s.apply(Op::Expose { from: "fixture.out".into(), as_name: "bias".into() }),
+            Ok(()),
+            "the spliced instance resolves under \"fixture\" — the fetched composite's own name"
+        );
+    }
+
     /// A post-splice `bind` path with no matching open param anywhere in the
     /// instance faults through the existing bind-fault shape (`BadParam`),
     /// naming the instance and the qualified within-instance path (#317).
@@ -1448,13 +1655,13 @@ mod tests {
     fn use_gang_fixture() -> Composite {
         let ops = vec![
             Op::Input { role: "price".into() },
-            Op::Add { type_id: "SMA".into(), as_name: Some("channel_hi".into()), bind: vec![] },
-            Op::Add { type_id: "SMA".into(), as_name: Some("channel_lo".into()), bind: vec![] },
+            Op::Add { type_id: "SMA".into(), as_name: Some("channel_hi".into()), args: vec![], bind: vec![] },
+            Op::Add { type_id: "SMA".into(), as_name: Some("channel_lo".into()), args: vec![], bind: vec![] },
             Op::Gang {
                 as_name: "channel_length".into(),
                 into: vec!["channel_hi.length".into(), "channel_lo.length".into()],
             },
-            Op::Add { type_id: "Sub".into(), as_name: None, bind: vec![] },
+            Op::Add { type_id: "Sub".into(), as_name: None, args: vec![], bind: vec![] },
             Op::Feed {
                 role: "price".into(),
                 into: vec!["channel_hi.series".into(), "channel_lo.series".into()],
@@ -1505,7 +1712,7 @@ mod tests {
         let mut s = GraphSession::new("g", &std_vocabulary, &subgraph);
         s.apply(Op::Use { ref_id: "fixture".into(), name: Some("gate".into()), bind: vec![] })
             .unwrap();
-        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("solo".into()), bind: vec![] })
+        s.apply(Op::Add { type_id: "SMA".into(), as_name: Some("solo".into()), args: vec![], bind: vec![] })
             .unwrap();
         assert_eq!(
             s.apply(Op::Gang {
@@ -1527,7 +1734,7 @@ mod tests {
     fn use_op_connect_closing_a_cycle_through_an_instance_is_rejected_eagerly() {
         let subgraph = |_: &str| Some(use_fixture());
         let mut s = GraphSession::new("g", &std_vocabulary, &subgraph);
-        s.apply(Op::Add { type_id: "Sub".into(), as_name: Some("s".into()), bind: vec![] }).unwrap();
+        s.apply(Op::Add { type_id: "Sub".into(), as_name: Some("s".into()), args: vec![], bind: vec![] }).unwrap();
         s.apply(Op::Use { ref_id: "fixture".into(), name: Some("gate".into()), bind: vec![] }).unwrap();
         s.apply(Op::Connect { from: "s.value".into(), to: "gate.price".into() }).unwrap();
         assert_eq!(
@@ -1595,7 +1802,7 @@ mod tests {
             Op::Add {
                 type_id: "SMA".into(),
                 as_name: Some("sma".into()),
-                bind: vec![("length".into(), Scalar::i64(3))],
+                args: vec![], bind: vec![("length".into(), Scalar::i64(3))],
             },
             Op::Feed { role: "x".into(), into: vec!["sma.series".into()] },
             Op::Expose { from: "sma.value".into(), as_name: "out".into() },

crates/aura-engine/src/lib.rs

@@ -52,12 +52,13 @@ mod sweep;
 mod walkforward;
 
 pub use blueprint::{
-    BindError, Binder, BlueprintNode, BoundSpec, CompileError, Composite, Gang, GangFault,
-    GangMember, OutField, RandomBinder, ReopenError, Role, SweepBinder, Tap, TapWire,
+    name_gate, BindError, Binder, BlueprintNode, BoundSpec, CompileError, Composite, Gang,
+    GangFault, GangMember, NameGateFault, OutField, RandomBinder, ReopenError, Role, SweepBinder,
+    Tap, TapWire,
 };
 pub use blueprint_serde::{
-    blueprint_from_json, blueprint_identity_json, blueprint_to_json, BlueprintDoc, CompositeData,
-    LoadError, NodeData, PrimitiveData, SerializeError, BLUEPRINT_FORMAT_VERSION,
+    blueprint_from_json, blueprint_identity_json, blueprint_to_json, ArgData, BlueprintDoc,
+    CompositeData, LoadError, NodeData, PrimitiveData, SerializeError, BLUEPRINT_FORMAT_VERSION,
 };
 pub use builder::{BuildError, GraphBuilder, InPort, NodeHandle, OutPort, RoleHandle};
 pub use construction::{replay, GraphSession, Op, OpError};
@@ -88,7 +89,8 @@ pub use walkforward::{
 // (SourceSpec.kind is a ScalarKind; sources/Recorder columns are Scalar /
 // Firing / Timestamp) so a graph builder has one import surface, not two.
 pub use aura_core::{
-    BindOpError, Firing, NodeSchema, ParamSpec, PortSpec, Scalar, ScalarKind, Timestamp,
+    ArgKind, ArgOpError, BindOpError, Firing, NodeSchema, ParamSpec, PortSpec, Scalar, ScalarKind,
+    Timestamp,
 };
 
 #[cfg(test)]

crates/aura-engine/tests/construction_e2e.rs

@@ -34,10 +34,10 @@ fn params() -> [Scalar; 3] {
 fn signal_ops() -> Vec<Op> {
     vec![
         Op::Source { role: "price".into(), kind: ScalarKind::F64 },
-        Op::Add { type_id: "SMA".into(), as_name: Some("fast".into()), bind: vec![] },
-        Op::Add { type_id: "SMA".into(), as_name: Some("slow".into()), bind: vec![] },
-        Op::Add { type_id: "Sub".into(), as_name: None, bind: vec![] },
-        Op::Add { type_id: "Bias".into(), as_name: None, bind: vec![] },
+        Op::Add { type_id: "SMA".into(), as_name: Some("fast".into()), args: vec![], bind: vec![] },
+        Op::Add { type_id: "SMA".into(), as_name: Some("slow".into()), args: vec![], bind: vec![] },
+        Op::Add { type_id: "Sub".into(), as_name: None, args: vec![], bind: vec![] },
+        Op::Add { type_id: "Bias".into(), as_name: None, args: vec![], bind: vec![] },
         Op::Feed { role: "price".into(), into: vec!["fast.series".into(), "slow.series".into()] },
         Op::Connect { from: "fast.value".into(), to: "sub.lhs".into() },
         Op::Connect { from: "slow.value".into(), to: "sub.rhs".into() },
@@ -96,10 +96,10 @@ fn replayed_construction_compiles_identically_to_graphbuilder() {
 #[test]
 fn replay_attributes_eager_fault_to_its_op_index() {
     let ops = vec![
-        Op::Add { type_id: "SMA".into(), as_name: Some("fast".into()), bind: vec![] }, // 0 ok
-        Op::Add { type_id: "Sub".into(), as_name: None, bind: vec![] },                // 1 ok
-        Op::Add { type_id: "Nope".into(), as_name: None, bind: vec![] },               // 2 fails
-        Op::Add { type_id: "Bias".into(), as_name: None, bind: vec![] },               // 3 never runs
+        Op::Add { type_id: "SMA".into(), as_name: Some("fast".into()), args: vec![], bind: vec![] }, // 0 ok
+        Op::Add { type_id: "Sub".into(), as_name: None, args: vec![], bind: vec![] },                // 1 ok
+        Op::Add { type_id: "Nope".into(), as_name: None, args: vec![], bind: vec![] },               // 2 fails
+        Op::Add { type_id: "Bias".into(), as_name: None, args: vec![], bind: vec![] },               // 3 never runs
     ];
     // `.err().unwrap()` (not `unwrap_err`): the Ok arm `Composite` holds build
     // closures and is not `Debug`, which `unwrap_err`'s bound would require.
@@ -120,9 +120,9 @@ fn replay_attributes_eager_fault_to_its_op_index() {
 fn replay_attributes_holistic_fault_to_finalize_step() {
     let ops = vec![
         Op::Source { role: "price".into(), kind: ScalarKind::F64 },                    // 0
-        Op::Add { type_id: "SMA".into(), as_name: Some("fast".into()), bind: vec![] }, // 1
-        Op::Add { type_id: "SMA".into(), as_name: Some("slow".into()), bind: vec![] }, // 2
-        Op::Add { type_id: "Sub".into(), as_name: None, bind: vec![] },                // 3
+        Op::Add { type_id: "SMA".into(), as_name: Some("fast".into()), args: vec![], bind: vec![] }, // 1
+        Op::Add { type_id: "SMA".into(), as_name: Some("slow".into()), args: vec![], bind: vec![] }, // 2
+        Op::Add { type_id: "Sub".into(), as_name: None, args: vec![], bind: vec![] },                // 3
         Op::Feed { role: "price".into(), into: vec!["fast.series".into(), "slow.series".into()] }, // 4
         Op::Connect { from: "fast.value".into(), to: "sub.lhs".into() },               // 5
         // sub.rhs deliberately left unwired -> only finalize can decide totality.

crates/aura-engine/tests/ger40_breakout.rs

@@ -110,7 +110,7 @@ fn build_harness(
         Resample::builder().schema().clone(),                                  // 0
         Delay::builder().schema().clone(),                                     // 1
         Gt::builder().schema().clone(),                                        // 2
-        Session::builder(9, 0, Berlin, 15).schema().clone(),                   // 3
+        Session::configured(9, 0, Berlin, 15).schema().clone(),                   // 3
         EqConst::builder().schema().clone(),                                   // 4
         EqConst::builder().schema().clone(),                                   // 5
         And::builder().schema().clone(),                                       // 6

crates/aura-engine/tests/r_meanrev_e2e.rs

@@ -21,7 +21,7 @@ fn run_meanrev_bias(closes: &[f64], n: i64, k: f64) -> Vec<f64> {
     let sq = g.add(Mul::builder()); // dev * dev
     let var = g.add(Ema::builder().bind("length", Scalar::i64(n))); // EWMA variance
     let sigma = g.add(Sqrt::builder());
-    let band = g.add(LinComb::builder(1).bind("weights[0]", Scalar::f64(k))); // k*sigma
+    let band = g.add(LinComb::configured(1).bind("weights[0]", Scalar::f64(k))); // k*sigma
     let upper = g.add(Add::builder()); // mean + k*sigma
     let lower = g.add(Sub::builder()); // mean - k*sigma
     let gt_hi = g.add(Gt::builder()); // price > upper

crates/aura-ingest/examples/shared/breakout_real.rs

@@ -112,7 +112,7 @@ pub fn build_harness() -> (Harness, Taps) {
         Resample::builder().schema().clone(), // 0
         Delay::builder().schema().clone(),     // 1
         Gt::builder().schema().clone(),        // 2
-        Session::builder(SESSION_HOUR, SESSION_MINUTE, Berlin, BAR_MINUTES)
+        Session::configured(SESSION_HOUR, SESSION_MINUTE, Berlin, BAR_MINUTES)
             .schema()
             .clone(), // 3
         EqConst::builder().schema().clone(), // 4
@@ -248,7 +248,7 @@ pub fn ger40_breakout_blueprint(
     );
     let delay = g.add(Delay::builder().bind("lag", Scalar::i64(1)));
     let gt = g.add(Gt::builder());
-    let session = g.add(Session::builder(open_hour, open_minute, tz, bar_period_minutes));
+    let session = g.add(Session::configured(open_hour, open_minute, tz, bar_period_minutes));
     // The ONLY two params: the EqConst targets, named so the space reads
     // `entry_bar.target` / `exit_bar.target`. Their `target` is left UNBOUND.
     let entry_bar = g.add(EqConst::builder().named("entry_bar"));

crates/aura-market/src/session.rs

@@ -33,10 +33,17 @@
 //! **Cold guard.** If the trigger column is empty (not yet fired) → `None`.
 
 use aura_core::{
-    Cell, Ctx, FieldSpec, Firing, Node, NodeSchema, ParamSpec, PortSpec, PrimitiveBuilder, ScalarKind,
+    ArgKind, ArgSpec, ArgValue, Cell, Ctx, FieldSpec, Firing, Node, NodeSchema, ParamSpec, PortSpec,
+    PrimitiveBuilder, Scalar, ScalarKind,
 };
 use chrono::{TimeZone, Timelike};
 
+/// The declared construction args of a `Session` recipe (spec §Concrete code
+/// shapes): the timezone and local open time — structural, non-scalar
+/// configuration, never a swept param.
+const SESSION_ARGS: &[ArgSpec] =
+    &[ArgSpec { name: "tz", kind: ArgKind::Tz }, ArgSpec { name: "open", kind: ArgKind::TimeOfDay }];
+
 /// Frankfurt-session bar indexer. Holds the open offset (minutes past local
 /// midnight), the IANA timezone, and the bar period — baked at construction,
 /// never streamed and never a swept param (a timezone is not a scalar).
@@ -60,23 +67,57 @@ impl Session {
         }
     }
 
-    /// The param-generic recipe for a blueprint primitive. The open time,
-    /// timezone, and period are **structural** config baked into the closure
-    /// (like `SimBroker::builder` bakes `pip_size`), NOT scalar params — the
-    /// declared param list is empty and the `build_fn` ignores its slice (like
-    /// `Gt` / `Latch`).
-    pub fn builder(open_hour: u32, open_minute: u32, tz: chrono_tz::Tz, period_minutes: i64) -> PrimitiveBuilder {
+    /// Roster factory: zero-arg, arg-bearing (spec §Concrete code shapes) — the
+    /// timezone and open time come through the `args` channel (`try_args`),
+    /// declared by [`SESSION_ARGS`]. `period_minutes` becomes an ordinary
+    /// `ParamSpec` once `make` runs (a real scalar knob, unlike tz/open).
+    pub fn builder() -> PrimitiveBuilder {
+        PrimitiveBuilder::pending(
+            "Session",
+            "bars elapsed since the session open, from the configured open time and timezone",
+            SESSION_ARGS,
+            Self::make,
+        )
+    }
+
+    /// Turn a validated `(tz, open)` value pair into the real signature: one
+    /// `trigger` input, one `bars_since_open` output, and `period_minutes` as
+    /// the sole (now scalar) `ParamSpec` — read from the param slice at build.
+    fn make(values: &[(String, ArgValue)]) -> PrimitiveBuilder {
+        let tz = values
+            .iter()
+            .find_map(|(n, v)| match (n.as_str(), v) {
+                ("tz", ArgValue::Tz(tz)) => Some(*tz),
+                _ => None,
+            })
+            .expect("try_args validated `tz` as ArgKind::Tz before calling make");
+        let (open_hour, open_minute) = values
+            .iter()
+            .find_map(|(n, v)| match (n.as_str(), v) {
+                ("open", ArgValue::TimeOfDay { hour, minute }) => Some((*hour, *minute)),
+                _ => None,
+            })
+            .expect("try_args validated `open` as ArgKind::TimeOfDay before calling make");
         PrimitiveBuilder::new(
             "Session",
             NodeSchema {
                 inputs: vec![PortSpec { kind: ScalarKind::F64, firing: Firing::Any, name: "trigger".into() }],
                 output: vec![FieldSpec { name: "bars_since_open".into(), kind: ScalarKind::I64 }],
-                params: vec![],
+                params: vec![ParamSpec { name: "period_minutes".into(), kind: ScalarKind::I64 }],
                 doc: "bars elapsed since the session open, from the configured open time and timezone",
             },
-            move |_| Box::new(Session::new(open_hour, open_minute, tz, period_minutes)),
+            move |p| Box::new(Session::new(open_hour, open_minute, tz, p[0].i64())),
         )
     }
+
+    /// Rust-path convenience — the same recipe as the data path (twin
+    /// identity): `builder().try_args([tz, open]) + .bind("period_minutes", …)`.
+    pub fn configured(open_hour: u32, open_minute: u32, tz: chrono_tz::Tz, period_minutes: i64) -> PrimitiveBuilder {
+        Self::builder()
+            .try_args(&[("tz".to_string(), tz.name().to_string()), ("open".to_string(), format!("{open_hour:02}:{open_minute:02}"))])
+            .expect("configured: a valid chrono_tz::Tz and in-range hour/minute always parse")
+            .bind("period_minutes", Scalar::i64(period_minutes))
+    }
 }
 
 /// The zero-arg `SessionFrankfurt` roster preset (#261): the Frankfurt open
@@ -244,4 +285,36 @@ mod tests {
         let inputs = trigger_input();
         assert_eq!(node.eval(Ctx::new(&inputs, Timestamp(0))), None);
     }
+
+    /// Twin identity (spec §aura-market): `configured` is exactly
+    /// `builder().try_args([tz, open]).bind("period_minutes", …)` — same
+    /// accepted args, same declared signature, whichever path authored it.
+    #[test]
+    fn session_configured_twin_equals_builder_try_args() {
+        let via_configured = Session::configured(9, 30, Berlin, 15);
+        let via_try_args = Session::builder()
+            .try_args(&[("tz".into(), "Europe/Berlin".into()), ("open".into(), "09:30".into())])
+            .expect("valid tz/open configure")
+            .bind("period_minutes", Scalar::i64(15));
+        assert_eq!(via_configured.construction_args(), via_try_args.construction_args());
+        assert_eq!(via_configured.schema(), via_try_args.schema());
+    }
+
+    /// Behaviour re-anchor (#271 Task 2): the DST-aware headline property
+    /// (local 09:45 reads bar 3 in both CEST summer and CET winter) holds
+    /// identically when the node is built through `configured` instead of
+    /// `Session::new` directly.
+    #[test]
+    fn session_configured_behaviour_unchanged() {
+        let mut node = Session::configured(9, 0, Berlin, 15).build(&[]);
+        let mut inputs = trigger_input();
+
+        let summer = Berlin.with_ymd_and_hms(2024, 7, 1, 9, 45, 0).unwrap().timestamp_nanos_opt().unwrap();
+        inputs[0].push(Scalar::f64(0.0)).unwrap();
+        assert_eq!(node.eval(Ctx::new(&inputs, Timestamp(summer))).map(|r| r[0].i64()), Some(3));
+
+        let winter = Berlin.with_ymd_and_hms(2024, 1, 2, 9, 45, 0).unwrap().timestamp_nanos_opt().unwrap();
+        inputs[0].push(Scalar::f64(0.0)).unwrap();
+        assert_eq!(node.eval(Ctx::new(&inputs, Timestamp(winter))).map(|r| r[0].i64()), Some(3));
+    }
 }

crates/aura-registry/src/lib.rs

@@ -421,7 +421,18 @@ pub enum RefFault {
     StrategyNotFound(String),
     IdentityUnmatched(String),
     StrategyUnloadable { id: String, error: String },
-    AxisNotInParamSpace { strategy: String, axis: String },
+    AxisNotInParamSpace {
+        strategy: String,
+        axis: String,
+        /// #328 translation aid: stripping ONE leading segment off `axis`
+        /// (the wrapped `<blueprint>.<node>.<param>` shape a stale transcript
+        /// might quote) and finding that remainder in the strategy's
+        /// `param_space()` or `bound_param_space()` — `Some` iff the strip-
+        /// then-hit lands, computed at fault-construction time so the prose
+        /// layer never re-derives it. `None` when no leading segment strips
+        /// to a hit (today's prose stays unchanged, no speculation).
+        raw_candidate: Option<String>,
+    },
     AxisKindMismatch { strategy: String, axis: String },
     /// An open param of the resolved strategy is bound by no campaign axis —
     /// the executor's every-open-knob-required rule, mirrored at validate
@@ -523,10 +534,22 @@ impl Registry {
                             });
                         }
                     }
-                    None => faults.push(RefFault::AxisNotInParamSpace {
-                        strategy: label.clone(),
-                        axis: axis.clone(),
-                    }),
+                    None => {
+                        // #328 did-you-mean: strip one leading segment off the
+                        // rejected axis (the wrapped-name shape a stale
+                        // transcript might quote) and check whether the
+                        // remainder is a legal raw axis here — never
+                        // speculating when it isn't.
+                        let raw_candidate = axis.split_once('.').map(|(_, rest)| rest).filter(|stripped| {
+                            space.iter().any(|p| p.name == *stripped)
+                                || bound.iter().any(|b| b.name == *stripped)
+                        }).map(str::to_string);
+                        faults.push(RefFault::AxisNotInParamSpace {
+                            strategy: label.clone(),
+                            axis: axis.clone(),
+                            raw_candidate,
+                        })
+                    }
                 }
             }
             // The reverse direction: every open param must be bound by some
@@ -2154,14 +2177,12 @@ mod tests {
         let resolve = |t: &str| aura_vocabulary::std_vocabulary(t);
 
         // A minimal fixture composite with one OPEN param, built from a
-        // zero-arg `aura-std` node (`Bias`) so `std_vocabulary` can actually
+        // plain `aura-std` node (`Bias`) so `std_vocabulary` can actually
         // resolve it on load. `aura-composites`' shipped composites (vol_stop,
-        // risk_executor*) all route through `LinComb`, whose builder needs a
-        // structural arity argument and is therefore deliberately absent from
-        // the zero-arg `std_vocabulary` roster (see aura-std/src/vocabulary.rs)
-        // — they cannot round-trip through `blueprint_from_json` with this
-        // resolver, so this fixture stands in as the "real, open-param,
-        // vocabulary-loadable composite" the test needs.
+        // risk_executor*) route through `LinComb`, an arg-bearing type (#271,
+        // `aura-vocabulary/src/lib.rs`) — using `Bias` here keeps this fixture
+        // independent of that construction channel, so it stands in as the
+        // "real, open-param, vocabulary-loadable composite" the test needs.
         let composite = Composite::new(
             "fixture",
             vec![aura_strategy::Bias::builder().named("b").into()],
@@ -2253,6 +2274,98 @@ mod tests {
         assert_eq!(reg.validate_campaign_refs(&by_identity, &resolve).expect("io ok"), Vec::new());
     }
 
+    /// #328: a rejected axis shaped like a stale wrapped transcript (one
+    /// bogus leading segment glued in front of a real raw param name) carries
+    /// that real name as `AxisNotInParamSpace::raw_candidate` — computed at
+    /// fault-construction time in `validate_campaign_refs`, never re-derived
+    /// by the prose layer.
+    #[test]
+    fn axis_not_in_param_space_carries_a_raw_candidate_when_strippable() {
+        use aura_engine::blueprint_to_json;
+
+        let reg = Registry::open(temp_family_dir("axis_raw_candidate_hit"));
+        let resolve = |t: &str| aura_vocabulary::std_vocabulary(t);
+        let composite = bias_fixture();
+        let real = composite.param_space().first().expect("fixture has an open param").clone();
+        let real_name = real.name.clone();
+
+        let blueprint_json = blueprint_to_json(&composite).expect("serializes");
+        let bp_id = aura_research::content_id_of(&blueprint_json);
+        reg.put_blueprint(&bp_id, &blueprint_json).expect("seed blueprint");
+        let process = r#"{"format_version":1,"kind":"process","name":"p","pipeline":[{"block":"std::generalize","metric":"sqn"}]}"#;
+        let proc_id = reg.put_process(process).expect("seed process");
+
+        let wrapped_axis = format!("graph.{real_name}");
+        let campaign_text = format!(
+            concat!(
+                r#"{{"format_version":1,"kind":"campaign","name":"c","#,
+                r#""data":{{"instruments":["GER40"],"windows":[{{"from_ms":1,"to_ms":2}}]}},"#,
+                r#""strategies":[{{"ref":{{"content_id":"{bp}"}},"#,
+                r#""axes":{{"{axis}":{{"kind":"F64","values":[0.5]}}}}}}],"#,
+                r#""process":{{"ref":{{"content_id":"{proc}"}}}},"#,
+                r#""seed":1,"presentation":{{"persist_taps":[],"emit":["family_table"]}}}}"#
+            ),
+            bp = bp_id,
+            axis = wrapped_axis,
+            proc = proc_id,
+        );
+        let doc = aura_research::parse_campaign(&campaign_text).expect("campaign parses");
+        let faults = reg.validate_campaign_refs(&doc, &resolve).expect("io ok");
+        let hit = faults
+            .iter()
+            .find(|f| matches!(f, RefFault::AxisNotInParamSpace { axis, .. } if axis == &wrapped_axis));
+        match hit {
+            Some(RefFault::AxisNotInParamSpace { raw_candidate, .. }) => {
+                assert_eq!(raw_candidate.as_deref(), Some(real_name.as_str()));
+            }
+            other => panic!("expected AxisNotInParamSpace for {wrapped_axis:?}, got {other:?}"),
+        }
+    }
+
+    /// #328 (negative): a rejected axis whose stripped remainder ALSO misses
+    /// the param space carries no `raw_candidate` — the fault never
+    /// speculates when stripping one leading segment lands nowhere.
+    #[test]
+    fn axis_not_in_param_space_carries_no_candidate_when_stripped_remainder_also_misses() {
+        use aura_engine::blueprint_to_json;
+
+        let reg = Registry::open(temp_family_dir("axis_raw_candidate_miss"));
+        let resolve = |t: &str| aura_vocabulary::std_vocabulary(t);
+        let composite = bias_fixture();
+
+        let blueprint_json = blueprint_to_json(&composite).expect("serializes");
+        let bp_id = aura_research::content_id_of(&blueprint_json);
+        reg.put_blueprint(&bp_id, &blueprint_json).expect("seed blueprint");
+        let process = r#"{"format_version":1,"kind":"process","name":"p","pipeline":[{"block":"std::generalize","metric":"sqn"}]}"#;
+        let proc_id = reg.put_process(process).expect("seed process");
+
+        let bogus_axis = "bogus.alsobogus";
+        let campaign_text = format!(
+            concat!(
+                r#"{{"format_version":1,"kind":"campaign","name":"c","#,
+                r#""data":{{"instruments":["GER40"],"windows":[{{"from_ms":1,"to_ms":2}}]}},"#,
+                r#""strategies":[{{"ref":{{"content_id":"{bp}"}},"#,
+                r#""axes":{{"{axis}":{{"kind":"F64","values":[0.5]}}}}}}],"#,
+                r#""process":{{"ref":{{"content_id":"{proc}"}}}},"#,
+                r#""seed":1,"presentation":{{"persist_taps":[],"emit":["family_table"]}}}}"#
+            ),
+            bp = bp_id,
+            axis = bogus_axis,
+            proc = proc_id,
+        );
+        let doc = aura_research::parse_campaign(&campaign_text).expect("campaign parses");
+        let faults = reg.validate_campaign_refs(&doc, &resolve).expect("io ok");
+        let hit = faults
+            .iter()
+            .find(|f| matches!(f, RefFault::AxisNotInParamSpace { axis, .. } if axis == bogus_axis));
+        match hit {
+            Some(RefFault::AxisNotInParamSpace { raw_candidate, .. }) => {
+                assert_eq!(raw_candidate, &None);
+            }
+            other => panic!("expected AxisNotInParamSpace for {bogus_axis:?}, got {other:?}"),
+        }
+    }
+
     /// Property (#191): the identity-index sidecar is a last-line-wins cache
     /// over identity id → content id — a missing file reads as empty (no
     /// error, since the scan is the truth path), a later append for the same

crates/aura-runner/src/axes.rs

@@ -45,6 +45,75 @@ pub fn raw_matches_wrapped(raw: &str, wrapped: &str) -> bool {
     wrapped == raw || wrapped_to_raw_axis(wrapped) == raw
 }
 
+/// (a) #328: the explicit `--axis` acceptance predicate, shared by BOTH
+/// intake routes (`validate_and_register_axes`'s real route and the synthetic
+/// sweep-verb intake ahead of `run_blueprint_sweep`). RAW is checked FIRST and
+/// independently — a legal RAW name (an open param's [`wrapped_to_raw_axis`]
+/// suffix, or a bound param's own already-raw name, #203) is accepted
+/// outright, so a pathological name that is both raw-legal and wrapped-exact
+/// (e.g. an unwrapped param) resolves as raw, never as a translation refusal.
+/// Only once that fails is a WRAPPED hit considered (an exact `param_space()`
+/// name, or one leading segment stripped off `name` landing on a bound
+/// param): that is a translation refusal naming the raw candidate, never a
+/// silent alias. Anything matching neither namespace is [`AxisIntake::Unknown`]
+/// — the caller's own unmatched-axis prose applies, unchanged.
+///
+/// Deliberately NOT built on [`raw_matches_wrapped`]: that predicate's own
+/// equality branch also matches an EXACT wrapped name (see its doc comment),
+/// so using it as the acceptance gate would silently accept the retired form
+/// instead of refusing it.
+#[derive(Debug, PartialEq, Eq)]
+pub enum AxisIntake {
+    /// A legal RAW name (`--list-axes`'s own namespace, #328) — accept as-is.
+    Raw,
+    /// A retired WRAPPED name; the carried string is its translated RAW
+    /// candidate — never applied silently, only ever surfaced in a refusal.
+    WrappedRetired(String),
+    /// Neither namespace: the caller's own unknown-axis prose applies.
+    Unknown,
+}
+
+/// Classify one `--axis` name against `wrapped_open` (the WRAPPED open-param
+/// probe, `blueprint_axis_probe(..).param_space()`) and `raw_bound` (the
+/// strategy's own `bound_param_space()` names — already RAW, #203). See
+/// [`AxisIntake`] for the precedence.
+pub fn classify_axis_intake(
+    name: &str,
+    wrapped_open: &[ParamSpec],
+    raw_bound: &HashSet<String>,
+) -> AxisIntake {
+    let is_raw = wrapped_open.iter().any(|p| wrapped_to_raw_axis(&p.name) == name)
+        || raw_bound.contains(name);
+    if is_raw {
+        return AxisIntake::Raw;
+    }
+    let is_wrapped = wrapped_open.iter().any(|p| p.name == name)
+        || raw_bound.iter().any(|b| name.split_once('.').map(|(_, rest)| rest) == Some(b.as_str()));
+    if is_wrapped {
+        AxisIntake::WrappedRetired(wrapped_to_raw_axis(name).to_string())
+    } else {
+        AxisIntake::Unknown
+    }
+}
+
+/// Translate one RAW axis name onto the ONE wrapped `space` slot it
+/// suffix-matches ([`raw_matches_wrapped`]), falling back to `raw` unchanged
+/// when no wrapped slot matches — the caller's own downstream name
+/// resolution (e.g. the sweep terminal's `UnknownKnob`) surfaces that case,
+/// never panicked here. #328: the shared translation `blueprint_sweep_family`
+/// established for its `SweepBinder::axis` call, extracted so
+/// `blueprint_sweep_over`/`validate_axis_grid` (the walkforward synthetic
+/// route's own binder calls, which key by the same exact wrapped
+/// `param_space()` name) can translate a RAW `--axis` name too instead of
+/// requiring the retired wrapped form.
+pub fn wrapped_name_of(raw: &str, space: &[ParamSpec]) -> String {
+    space
+        .iter()
+        .find(|p| raw_matches_wrapped(raw, &p.name))
+        .map(|p| p.name.clone())
+        .unwrap_or_else(|| raw.to_string())
+}
+
 /// Suffix-join each raw campaign axis onto exactly one wrapped param
 /// ([`raw_matches_wrapped`] — wrapped == raw, or stripping the wrapper's one
 /// node segment yields raw), then require every wrapped slot to be covered.
@@ -139,6 +208,53 @@ mod tests {
         ParamSpec { name: name.to_string(), kind: ScalarKind::I64 }
     }
 
+    #[test]
+    /// #328: a legal RAW name — either an open param's raw suffix or a bound
+    /// param's own (already-raw) name — classifies `Raw`, accepted as-is.
+    fn classify_axis_intake_accepts_a_raw_open_or_bound_name() {
+        let wrapped_open = vec![spec("sma_signal.fast.length")];
+        let raw_bound: HashSet<String> = ["bias.scale".to_string()].into_iter().collect();
+        assert_eq!(classify_axis_intake("fast.length", &wrapped_open, &raw_bound), AxisIntake::Raw);
+        assert_eq!(classify_axis_intake("bias.scale", &wrapped_open, &raw_bound), AxisIntake::Raw);
+    }
+
+    #[test]
+    /// #328: a WRAPPED name — the exact `param_space()` string, or a bound
+    /// param prefixed by one wrap segment — classifies `WrappedRetired`,
+    /// carrying its raw candidate, never accepted silently.
+    fn classify_axis_intake_flags_a_wrapped_name_with_its_raw_candidate() {
+        let wrapped_open = vec![spec("sma_signal.fast.length")];
+        let raw_bound: HashSet<String> = ["bias.scale".to_string()].into_iter().collect();
+        assert_eq!(
+            classify_axis_intake("sma_signal.fast.length", &wrapped_open, &raw_bound),
+            AxisIntake::WrappedRetired("fast.length".to_string())
+        );
+        assert_eq!(
+            classify_axis_intake("sma_signal.bias.scale", &wrapped_open, &raw_bound),
+            AxisIntake::WrappedRetired("bias.scale".to_string())
+        );
+    }
+
+    #[test]
+    /// #328: a name matching neither namespace is `Unknown` — the caller's own
+    /// unmatched-axis prose applies, unchanged by this predicate.
+    fn classify_axis_intake_reports_unknown_for_neither_space() {
+        let wrapped_open = vec![spec("sma_signal.fast.length")];
+        let raw_bound: HashSet<String> = ["bias.scale".to_string()].into_iter().collect();
+        assert_eq!(classify_axis_intake("nope", &wrapped_open, &raw_bound), AxisIntake::Unknown);
+    }
+
+    #[test]
+    /// #328: raw is checked FIRST — an unwrapped (no-dot) param whose raw name
+    /// happens to equal its own wrapped `param_space()` string (a root-level
+    /// knob with no node-path prefix) resolves as `Raw`, never misclassified
+    /// as a wrapped-exact hit needing translation.
+    fn classify_axis_intake_prefers_raw_when_a_name_is_both() {
+        let wrapped_open = vec![spec("length")]; // no dot: raw == wrapped
+        let raw_bound: HashSet<String> = HashSet::new();
+        assert_eq!(classify_axis_intake("length", &wrapped_open, &raw_bound), AxisIntake::Raw);
+    }
+
     #[test]
     /// The only shape treated as a direct store address is a bare 64-char
     /// lowercase-hex token; anything else (wrong length, uppercase, non-hex)

crates/aura-runner/src/coverage.rs

@@ -1,8 +1,8 @@
-//! Coverage reporting: the single interior-gap-month walk, shared by a
-//! campaign cell's coverage annotation
-//! (`DefaultMemberRunner::window_coverage`) and `aura data coverage`'s
-//! archive-wide report — two independent walk implementations before this
-//! module existed (#295 dedup).
+//! The interior-gap-month walk behind a campaign cell's coverage annotation
+//! (`DefaultMemberRunner::window_coverage`) — originally shared with `aura
+//! data coverage`'s archive-wide report (#295 dedup: two independent walk
+//! implementations before this module existed) before that verb retired in
+//! favor of per-cell fault isolation (#272, #273).
 
 /// `"YYYY-MM"` rendering of a `(year, month)` pair.
 pub fn fmt_year_month((y, m): (u16, u8)) -> String {
@@ -18,11 +18,11 @@ pub fn next_year_month((y, m): (u16, u8)) -> (u16, u8) {
 /// fall inside `window_ms` (Unix-ms) — one `"YYYY-MM"` entry per missing
 /// month, never a collapsed range: the registry's `CellCoverage::gap_months`
 /// is a flat list an aggregate counts directly. `months` is assumed sorted
-/// ([`aura_ingest::list_m1_months`]'s own contract). The single gap-walk
-/// implementation (#295): both `DefaultMemberRunner::window_coverage`
-/// (a swept cell's own window) and [`data_coverage_report`] (the full
-/// archive span, via [`FULL_ARCHIVE_WINDOW_MS`]) call this one walk instead
-/// of maintaining independent copies.
+/// ([`aura_ingest::list_m1_months`]'s own contract). `DefaultMemberRunner::
+/// window_coverage` (a swept cell's own window) is the sole caller since
+/// `aura data coverage`'s archive-wide report retired (#273); the walk stays
+/// its own function because it was single-sourced with that verb before then
+/// (#295).
 pub fn interior_gap_months(months: &[(u16, u8)], window_ms: (i64, i64)) -> Vec<String> {
     let from_ym = data_server::records::unix_ms_to_year_month(window_ms.0);
     let to_ym = data_server::records::unix_ms_to_year_month(window_ms.1);
@@ -40,68 +40,6 @@ pub fn interior_gap_months(months: &[(u16, u8)], window_ms: (i64, i64)) -> Vec<S
     out
 }
 
-/// A Unix-ms window that decodes (via `unix_ms_to_year_month`) to year/month
-/// bounds — 0001-01 and 9999-01, exact epoch-ms for those UTC instants, not
-/// an approximation — comfortably outside any realistic archive month, so an
-/// unbounded, archive-wide [`interior_gap_months`] walk never ms-filters out
-/// a real gap. Safely inside `chrono`'s valid calendar range, so the
-/// conversion inside `interior_gap_months` never panics.
-pub const FULL_ARCHIVE_WINDOW_MS: (i64, i64) = (-62_135_596_800_000, 253_370_764_800_000);
-
-/// `aura data coverage <SYMBOL>`'s pure report body (#264): render `symbol`'s
-/// coverage report from its sorted `(year, month)` file list — one `span:`
-/// line framing the first/last present month, then either a `no gaps` line
-/// or one `missing: YYYY-MM..YYYY-MM` line per interior contiguous gap (a
-/// ten-month hole is one line, not ten). `Err` exactly when `months` is
-/// empty — no archive file exists for `symbol` at all (the caller's "unknown
-/// symbol" refusal, stderr + exit 1). The gap detection itself is
-/// [`interior_gap_months`] over the full archive span
-/// ([`FULL_ARCHIVE_WINDOW_MS`]); collapsing its flat per-month list into
-/// contiguous ranges is presentation-only regrouping, done here since it
-/// stays byte-identical to the pre-dedup report.
-pub fn data_coverage_report(symbol: &str, months: &[(u16, u8)]) -> Result<Vec<String>, String> {
-    let Some(&first) = months.first() else {
-        return Err(format!("no archive files found for symbol \"{symbol}\""));
-    };
-    let last = *months.last().expect("non-empty checked above");
-    let mut lines =
-        vec![format!("{symbol} span: {}..{}", fmt_year_month(first), fmt_year_month(last))];
-    let gap_months = interior_gap_months(months, FULL_ARCHIVE_WINDOW_MS);
-    if gap_months.is_empty() {
-        lines.push(format!("{symbol} no gaps"));
-    } else {
-        for (from, to) in collapse_contiguous_year_months(&gap_months) {
-            lines.push(format!("{symbol} missing: {from}..{to}"));
-        }
-    }
-    Ok(lines)
-}
-
-/// Collapse [`interior_gap_months`]' flat, ascending `"YYYY-MM"` list into
-/// contiguous inclusive `(from, to)` ranges — a ten-month hole collapses to
-/// one pair, not ten. Presentation-only regrouping: the gap WALK itself
-/// already ran in `interior_gap_months`.
-fn collapse_contiguous_year_months(months: &[String]) -> Vec<(String, String)> {
-    let mut out: Vec<(String, String)> = Vec::new();
-    for m in months {
-        let ym = parse_year_month(m);
-        match out.last_mut() {
-            Some((_, to)) if next_year_month(parse_year_month(to)) == ym => {
-                *to = m.clone();
-            }
-            _ => out.push((m.clone(), m.clone())),
-        }
-    }
-    out
-}
-
-/// Inverse of [`fmt_year_month`] — parses back the `"YYYY-MM"` shape
-/// [`interior_gap_months`] always emits.
-fn parse_year_month(s: &str) -> (u16, u8) {
-    let (y, m) = s.split_once('-').expect("interior_gap_months emits YYYY-MM");
-    (y.parse().expect("YYYY digits"), m.parse().expect("MM digits"))
-}
-
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -125,37 +63,4 @@ mod tests {
             "both interior gap months must be named, in order"
         );
     }
-
-    /// An unknown symbol (no archive files at all — an empty month list)
-    /// refuses rather than reporting a bogus empty-span coverage (#264): the
-    /// caller eprintln's the message and exits 1.
-    #[test]
-    fn data_coverage_report_refuses_an_unknown_symbol() {
-        let err = data_coverage_report("GHOST", &[]).unwrap_err();
-        assert!(err.contains("GHOST"), "names the unknown symbol: {err}");
-    }
-
-    /// A symbol with a fully contiguous file index reports its span plus an
-    /// explicit `no gaps` line — never a bare span with no gap-status line at
-    /// all, which would leave "no gaps" indistinguishable from "gaps not yet
-    /// checked" (#264).
-    #[test]
-    fn data_coverage_report_of_a_gapless_symbol_is_span_plus_no_gaps() {
-        let months = [(2024, 1), (2024, 2), (2024, 3)];
-        let lines = data_coverage_report("SYMA", &months).expect("known symbol");
-        assert_eq!(lines, vec!["SYMA span: 2024-01..2024-03", "SYMA no gaps"]);
-    }
-
-    /// The Copper failure shape itself: one interior gap collapses to a single
-    /// `missing: YYYY-MM..YYYY-MM` line naming the whole contiguous hole, not
-    /// one line per missing month (#264).
-    #[test]
-    fn data_coverage_report_collapses_an_interior_gap_to_one_range_line() {
-        let months = [(2024, 1), (2024, 2), (2024, 5), (2024, 6)];
-        let lines = data_coverage_report("GAPSYM", &months).expect("known symbol");
-        assert_eq!(
-            lines,
-            vec!["GAPSYM span: 2024-01..2024-06", "GAPSYM missing: 2024-03..2024-04"]
-        );
-    }
 }

crates/aura-runner/src/family.rs

@@ -254,16 +254,30 @@ const DEFLATION_SEED: u64 = 0xDEF1_A7ED;
 /// fully-prosed message string (wrapped from `override_paths`' own
 /// `Result<_, String>`) — unwrapped here rather than Debug-framed (#269), so
 /// the walkforward path's rejection reaches stderr as bare prose too.
+///
+/// #328 render-seam fix: `BindError::MissingKnob`/`KindMismatch` carry the
+/// WRAPPED knob name (the terminal's own bind-time frame — untouched by this
+/// cycle, per the minuted deviation on acceptance-criterion 2). No
+/// user-facing surface may print a wrapped axis name, so this renderer strips
+/// the one leading node segment (`wrapped_to_raw_axis`, the same convention
+/// `axes.rs` defines) before the name ever reaches prose — the fix lives at
+/// the RENDER seam only, not in the error type or the resolution machinery.
 pub fn render_bind_error(e: &BindError) -> String {
     match e {
-        BindError::MissingKnob(name) => format!(
-            "axis {name}: an open param with no axis and no bound default — \
-             bind it with `--axis {name}=<value>` — see `aura sweep <bp> --list-axes`"
-        ),
-        BindError::KindMismatch { knob, expected, got } => format!(
-            "axis {knob}: expected {expected:?}, supplied {got:?} — \
-             see `aura sweep <bp> --list-axes`"
-        ),
+        BindError::MissingKnob(name) => {
+            let name = crate::axes::wrapped_to_raw_axis(name);
+            format!(
+                "axis {name}: an open param with no axis and no bound default — \
+                 bind it with `--axis {name}=<value>` — see `aura sweep <bp> --list-axes`"
+            )
+        }
+        BindError::KindMismatch { knob, expected, got } => {
+            let knob = crate::axes::wrapped_to_raw_axis(knob);
+            format!(
+                "axis {knob}: expected {expected:?}, supplied {got:?} — \
+                 see `aura sweep <bp> --list-axes`"
+            )
+        }
         BindError::UnknownKnob(msg) => msg.clone(),
         BindError::DuplicateBinding(name) => format!(
             "axis {name}: bound twice — each param takes exactly one axis — \
@@ -394,11 +408,17 @@ fn validate_axis_grid(
 ) -> Result<(), BindError> {
     let overrides = override_paths(axes, raw_space, probe_signal).map_err(BindError::UnknownKnob)?;
     let probe = blueprint_axis_probe_reopened(doc, env, &overrides);
+    let space = probe.param_space();
+    // #328: `axes` names are RAW (refused at the walkforward dispatch-boundary
+    // preflight ahead of this call, mirroring the plain sweep verb) — translate
+    // each onto the ONE wrapped `space` slot it suffix-matches
+    // (`wrapped_name_of`, the same convention `blueprint_sweep_family` feeds its
+    // own `SweepBinder`) before this terminal's exact-name resolution.
     let mut iter = axes.iter();
     let (first_name, first_vals) = iter.next().expect("a blueprint walk-forward declares >= 1 axis");
-    let mut binder = probe.axis(first_name, first_vals.clone());
+    let mut binder = probe.axis(&crate::axes::wrapped_name_of(first_name, &space), first_vals.clone());
     for (n, vals) in iter {
-        binder = binder.axis(n, vals.clone());
+        binder = binder.axis(&crate::axes::wrapped_name_of(n, &space), vals.clone());
     }
     binder.sweep_with_lattice(|_| axis_grid_probe_report()).map(|_| ())
 }
@@ -463,15 +483,38 @@ pub fn blueprint_sweep_family(
             &overrides,
         )
     };
-    // seed the named axes verbatim: the first via Composite::axis (consumes the probe),
-    // the rest via SweepBinder::axis. resolve_axes name- and kind-checks them at the
-    // sweep terminal, so an UnknownKnob / KindMismatch is returned, not panicked.
+    // seed the named axes: `axes` names are RAW (#328 — refused at intake before
+    // this fn ever runs), so each is translated to the ONE wrapped `space` slot
+    // it suffix-matches (`raw_matches_wrapped`, the same convention
+    // `override_paths` just resolved the override set through) before feeding
+    // `Composite::axis`/`SweepBinder::axis`, which still key by the exact
+    // wrapped `param_space()` name. `resolve_axes` name- and kind-checks the
+    // translated axes at the sweep terminal, so an UnknownKnob / KindMismatch
+    // is returned, not panicked (translation cannot itself introduce one: every
+    // incoming name was already validated raw-or-bound at the intake / override
+    // preflight above).
+    let wrapped_name_of = |raw: &str| -> String {
+        space
+            .iter()
+            .find(|p| crate::axes::raw_matches_wrapped(raw, &p.name))
+            .map(|p| p.name.clone())
+            .unwrap_or_else(|| raw.to_string())
+    };
     let mut iter = axes.iter();
     let (first_name, first_vals) = iter.next().expect("a blueprint sweep declares >= 1 axis");
-    let mut binder = probe.axis(first_name, first_vals.clone());
+    let mut binder = probe.axis(&wrapped_name_of(first_name), first_vals.clone());
     for (n, vals) in iter {
-        binder = binder.axis(n, vals.clone());
+        binder = binder.axis(&wrapped_name_of(n), vals.clone());
     }
+    // manifest.params records RAW names (#328): a name-only reshaping of `space`
+    // (order/kind untouched) fed to `run_blueprint_member`, which only zips it
+    // against `point` BY POSITION (`zip_params`) — never re-resolves by name —
+    // so renaming here is purely the manifest's own namespace, with no effect
+    // on member resolution.
+    let manifest_space: Vec<ParamSpec> = space
+        .iter()
+        .map(|p| ParamSpec { name: crate::axes::wrapped_to_raw_axis(&p.name).to_string(), kind: p.kind })
+        .collect();
     // #278: `run_blueprint_member` runs bare here (no #272 fault boundary of its
     // own), so a member-compile panic (e.g. an `Sma::new` length assert) would
     // otherwise unwind straight through this sweep to an uncaught exit 101 —
@@ -485,7 +528,7 @@ pub fn blueprint_sweep_family(
             // fresh per-member graph (Composite is !Clone, reload per member) run through
             // the shared reduce-mode member path — the same fn reproduction re-runs.
             match catch_member_panic(|| {
-                run_blueprint_member(reload(doc), point, &space, data.run_sources(env, &binding.columns()), window, 0, pip, &topo, env, DEFAULT_STOP, &binding, &[], NO_INSTRUMENT_CONTEXT)
+                run_blueprint_member(reload(doc), point, &manifest_space, data.run_sources(env, &binding.columns()), window, 0, pip, &topo, env, DEFAULT_STOP, &binding, &[], NO_INSTRUMENT_CONTEXT)
             }) {
                 Ok(report) => report,
                 Err(msg) => {
@@ -545,11 +588,16 @@ pub fn blueprint_sweep_over(
     let overrides = override_paths(axes, &raw_space, &probe_signal).map_err(BindError::UnknownKnob)?;
     let probe = blueprint_axis_probe_reopened(doc, env, &overrides);
     let space = probe.param_space();
+    // #328: `axes` names are RAW (refused at the walkforward dispatch-boundary
+    // preflight ahead of the caller, mirroring the plain sweep verb) —
+    // translate each onto the ONE wrapped `space` slot it suffix-matches
+    // (`wrapped_name_of`, the same convention `blueprint_sweep_family` feeds
+    // its own `SweepBinder`) before this terminal's exact-name resolution.
     let mut iter = axes.iter();
     let (first_name, first_vals) = iter.next().expect("a blueprint walk-forward declares >= 1 axis");
-    let mut binder = probe.axis(first_name, first_vals.clone());
+    let mut binder = probe.axis(&crate::axes::wrapped_name_of(first_name, &space), first_vals.clone());
     for (n, vals) in iter {
-        binder = binder.axis(n, vals.clone());
+        binder = binder.axis(&crate::axes::wrapped_name_of(n, &space), vals.clone());
     }
     let faults: Mutex<Vec<(Vec<Cell>, String)>> = Mutex::new(Vec::new());
     let (family, lattice) = binder.sweep_with_lattice(|point| {

crates/aura-runner/src/measure.rs

@@ -12,7 +12,7 @@ use std::collections::BTreeMap;
 use aura_core::{Scalar, Timestamp};
 use aura_engine::{Composite, Harness, MeasurementReport, RunManifest};
 
-use crate::member::{key_supply, resolve_run_data, wrapped_bound_defaults, RunData};
+use crate::member::{key_supply, raw_bound_defaults, resolve_run_data, RunData};
 use crate::project::Env;
 use crate::tap_plan::{bind_tap_plan, TapPlan};
 
@@ -79,7 +79,7 @@ pub fn run_measurement(
         std::process::exit(1);
     }
     let names: Vec<String> = signal.param_space().iter().map(|p| p.name.clone()).collect();
-    let defaults = wrapped_bound_defaults(&signal);
+    let defaults = raw_bound_defaults(&signal);
     let (sources, window, _pip_size) = resolve_run_data(&data, env, &binding);
 
     // Compile the signal DIRECTLY — no wrap_r, no broker/executor/eq-ex-r sinks.

crates/aura-runner/src/member.rs

@@ -82,22 +82,20 @@ pub fn sim_optimal_manifest(
     }
 }
 
-/// The wrap-prefixed BOUND-param defaults of `signal` (#249): every
-/// `bound_param_space()` entry as a `(<signal.name()>.<param>, value)` pair, in
-/// `bound_param_space()` order — the `RunManifest.defaults` field. Must be read
-/// off `signal` BEFORE it is consumed by `wrap_r`/reopening: an axis-reopened
-/// bound param has already left `bound_param_space()` by construction
-/// (`Composite::reopen` forgets the bound value), so a caller that reopens
-/// overrides before calling this naturally excludes them — no separate filter
-/// needed. Same prefixing rule as `wrapped_bound_names`, kept separate because
-/// that helper discards the value this one needs.
-pub fn wrapped_bound_defaults(signal: &Composite) -> Vec<(String, Scalar)> {
-    let prefix = format!("{}.", signal.name());
-    signal
-        .bound_param_space()
-        .into_iter()
-        .map(|b| (format!("{prefix}{}", b.name), b.value))
-        .collect()
+/// The RAW-namespace BOUND-param defaults of `signal` (#249/#328): every
+/// `bound_param_space()` entry as a `(<param>, value)` pair, already RAW
+/// (`bound_param_space()`'s own path-qualified name, #203 — no wrap-prefix
+/// concatenation), in `bound_param_space()` order — the `RunManifest.defaults`
+/// field. Must be read off `signal` BEFORE it is consumed by
+/// `wrap_r`/reopening: an axis-reopened bound param has already left
+/// `bound_param_space()` by construction (`Composite::reopen` forgets the
+/// bound value), so a caller that reopens overrides before calling this
+/// naturally excludes them — no separate filter needed. Contrast
+/// `wrapped_bound_names`, which DOES wrap-prefix (it matches against the
+/// WRAPPED open `param_space()`, a different coordinate system than this
+/// manifest-recording helper needs).
+pub fn raw_bound_defaults(signal: &Composite) -> Vec<(String, Scalar)> {
+    signal.bound_param_space().into_iter().map(|b| (b.name, b.value)).collect()
 }
 
 /// The honest broker label for the dual-tap r-sma harness: it runs a RiskExecutor
@@ -327,7 +325,7 @@ pub fn wrap_r(
     if !reduce {
         // r_equity = cum_realized_r + unrealized_r — one tapped series for charting.
         let r_equity = g.add(
-            LinComb::builder(2)
+            LinComb::configured(2)
                 .bind("weights[0]", Scalar::f64(1.0))
                 .bind("weights[1]", Scalar::f64(1.0)),
         );
@@ -411,7 +409,7 @@ pub fn wrap_r(
             // net_r_equity = cum_realized_r + unrealized_r − Σcum_cost_in_r
             // − Σopen_cost_in_r (the #221-deleted LinComb(4), weights 1,1,-1,-1).
             let net_eq = g.add(
-                LinComb::builder(4)
+                LinComb::configured(4)
                     .bind("weights[0]", Scalar::f64(1.0))
                     .bind("weights[1]", Scalar::f64(1.0))
                     .bind("weights[2]", Scalar::f64(-1.0))
@@ -506,7 +504,7 @@ pub fn run_signal_r(
         .iter()
         .map(|p| p.name.clone())
         .collect();
-    let defaults = wrapped_bound_defaults(&signal); // read before `signal` is consumed below
+    let defaults = raw_bound_defaults(&signal); // read before `signal` is consumed below
     let (tx_eq, rx_eq) = mpsc::channel();
     let (tx_ex, rx_ex) = mpsc::channel();
     let (tx_r, rx_r) = mpsc::channel();
@@ -580,7 +578,7 @@ pub fn run_blueprint_member(
     cost: &[aura_research::CostSpec],
     instrument: &str,
 ) -> RunReport {
-    let defaults = wrapped_bound_defaults(&signal); // read before `signal` is consumed below
+    let defaults = raw_bound_defaults(&signal); // read before `signal` is consumed below
     let (tx_eq, rx_eq) = mpsc::channel();
     let (tx_ex, rx_ex) = mpsc::channel();
     let (tx_r, rx_r) = mpsc::channel();
@@ -706,55 +704,72 @@ pub fn wrapped_bound_names(signal: &Composite) -> HashSet<String> {
         .collect()
 }
 
-/// The override subset of `names` (#246): every WRAPPED-coordinate name
-/// missing the un-reopened wrapped OPEN space but naming a BOUND param of the
-/// strategy — returned in STRATEGY coordinates (the wrap prefix
-/// `<signal.name()>.` stripped) for `Composite::reopen`. Names matching
-/// neither space are skipped here; the caller decides whether that is an
-/// error (sweep boundary) or falls through to its existing resolution
-/// errors. The silent variant `reproduce_family_in` uses over the RECORDED
-/// manifest param names (the sweep boundary uses the stricter
-/// `override_paths`, which errors on an unmatched name instead). Contrast
-/// `axes::raw_bound_overrides_of`, whose `names` are already RAW (a campaign
-/// document's own namespace, #203) and needs no such stripping.
+/// The override subset of `names` (#246): every name missing the un-reopened
+/// wrapped OPEN space but naming a BOUND param of the strategy — returned in
+/// STRATEGY coordinates (the wrap segment stripped) for `Composite::reopen`.
+/// Names matching neither space are skipped here; the caller decides whether
+/// that is an error (sweep boundary) or falls through to its existing
+/// resolution errors. The silent variant `reproduce_family_in`/`runner.rs`
+/// use over the RECORDED manifest param names (the sweep boundary uses the
+/// stricter `override_paths`, which errors on an unmatched name instead).
+///
+/// #328: matches via [`crate::axes::raw_matches_wrapped`], so `names` may be
+/// WRAPPED (every route this cycle leaves untouched) OR RAW (a `Sweep` family
+/// minted by `blueprint_sweep_family`, whose manifest now records the raw
+/// campaign namespace, #328) — `reproduce_family_in` reproduces families from
+/// either route generically, so this helper must tolerate both shapes rather
+/// than assume one. Contrast `axes::raw_bound_overrides_of`, whose `names` are
+/// ALWAYS RAW (a campaign document's own namespace, #203) by contract.
 pub fn wrapped_bound_overrides_of(
     names: &[String],
     open_space: &[ParamSpec],
     signal: &Composite,
 ) -> Vec<String> {
-    let open: HashSet<&str> = open_space.iter().map(|p| p.name.as_str()).collect();
-    let prefix = format!("{}.", signal.name());
     let bound = wrapped_bound_names(signal);
     names
         .iter()
-        .filter(|n| !open.contains(n.as_str()) && bound.contains(*n))
-        .map(|n| n[prefix.len()..].to_string())
+        .filter(|n| !open_space.iter().any(|p| crate::axes::raw_matches_wrapped(n, &p.name)))
+        .filter_map(|n| {
+            bound
+                .iter()
+                .find(|b| crate::axes::raw_matches_wrapped(n, b))
+                .map(|b| crate::axes::wrapped_to_raw_axis(b).to_string())
+        })
         .collect()
 }
 
 /// The sweep-boundary variant (#246): like `wrapped_bound_overrides_of`, but
 /// an axis matching NEITHER the open nor the bound space is the error — the
 /// honest replacement of the retired "fully bound; nothing to sweep" refusal.
+///
+/// #328: matches via [`crate::axes::raw_matches_wrapped`] rather than exact
+/// wrapped-name equality, so a RAW incoming name (`fast.length`) resolves
+/// against the WRAPPED open/bound space exactly like an exact wrapped hit
+/// (`sma_signal.fast.length`) would — the one shared suffix convention
+/// `axes.rs` defines, reused rather than re-derived here. This is the
+/// resolution mechanism, not an acceptance gate (contrast the CLI's own
+/// `--axis` intake, which refuses a wrapped name before this ever runs on the
+/// sweep-verb route); callers whose axes are not intake-filtered this cycle
+/// (the walk-forward routes) keep accepting either form unchanged.
 pub fn override_paths(
     axes: &[(String, Vec<Scalar>)],
     open_space: &[ParamSpec],
     signal: &Composite,
 ) -> Result<Vec<String>, String> {
-    let open: HashSet<&str> = open_space.iter().map(|p| p.name.as_str()).collect();
-    let prefix = format!("{}.", signal.name());
     let bound = wrapped_bound_names(signal);
     let mut overrides = Vec::new();
     for (name, _) in axes {
-        if open.contains(name.as_str()) {
+        if open_space.iter().any(|p| crate::axes::raw_matches_wrapped(name, &p.name)) {
             continue;
         }
-        if bound.contains(name) {
-            overrides.push(name[prefix.len()..].to_string());
-        } else {
-            return Err(format!(
-                "axis {name}: names no param of this blueprint (open or bound) — \
-                 see `aura sweep <bp> --list-axes`"
-            ));
+        match bound.iter().find(|b| crate::axes::raw_matches_wrapped(name, b)) {
+            Some(b) => overrides.push(crate::axes::wrapped_to_raw_axis(b).to_string()),
+            None => {
+                return Err(format!(
+                    "axis {name}: names no param of this blueprint (open or bound) — \
+                     see `aura sweep <bp> --list-axes`"
+                ));
+            }
         }
     }
     Ok(overrides)

crates/aura-runner/src/reproduce.rs

@@ -9,6 +9,7 @@
 use std::collections::BTreeMap;
 use std::sync::mpsc;
 
+use aura_core::Scalar;
 use aura_engine::{blueprint_from_json, window_of};
 use aura_registry::{group_families, Family, FamilyKind, Registry};
 use aura_backtest::point_from_params;
@@ -142,7 +143,31 @@ pub fn reproduce_family_in(
             });
         }
         let space = crate::member::wrap_r(reload()?, tx_eq, tx_ex, tx_r, tx_req, stop, true, SYNTHETIC_PIP_SIZE, &binding, None).param_space();
-        let point = point_from_params(&space, &stored.manifest.params)
+        // #328: `stored.manifest.params` is RAW on every mint route now (the
+        // synthetic sweep family and, since this cycle's tidy fix, the
+        // real/campaign route too) — but a family minted before this fix may
+        // still carry WRAPPED names on disk (C29: no retroactive rewrite of a
+        // registered artifact), so `reproduce_family_in` reproduces either
+        // shape generically: each recorded name is translated onto its
+        // matching WRAPPED `space` slot (`raw_matches_wrapped`, tolerant of
+        // both shapes) before `point_from_params`, which still keys by the
+        // exact wrapped name. Non-axis stamps (`stop_length`, `cost[k].<knob>`)
+        // carry no wrap segment either way and translate to themselves (no
+        // `space` hit).
+        let wrapped_params: Vec<(String, Scalar)> = stored
+            .manifest
+            .params
+            .iter()
+            .map(|(n, v)| {
+                let wrapped = space
+                    .iter()
+                    .find(|p| crate::axes::raw_matches_wrapped(n, &p.name))
+                    .map(|p| p.name.clone())
+                    .unwrap_or_else(|| n.clone());
+                (wrapped, *v)
+            })
+            .collect();
+        let point = point_from_params(&space, &wrapped_params)
             .map_err(|m| RunnerError { exit_code: 1, message: m })?;
         // A MonteCarlo member carries no tuning params (the params-join is empty), so its
         // reproduce line would print a BLANK member label; the seed IS its realization

crates/aura-runner/src/runner.rs

@@ -116,6 +116,21 @@ impl MemberRunner for DefaultMemberRunner<'_> {
                 .param_space();
         let point = bind_axes(&space, &cell.strategy_id, params)?;
         let signal = reopen_all(signal, &overrides);
+        // manifest.params records RAW names (#328: the real/campaign route was
+        // the one mint left wrapped after the synthetic route's own switch) —
+        // a name-only reshaping of `space` (order/kind untouched) fed to
+        // `run_blueprint_member`, which only zips it against `point` BY
+        // POSITION (`zip_params`) — never re-resolves by name — so renaming
+        // here is purely the manifest's own namespace, with no effect on
+        // member resolution (`space` itself stays wrapped for `bind_axes`
+        // above, which still keys by the exact wrapped `param_space()` name).
+        let manifest_space: Vec<aura_core::ParamSpec> = space
+            .iter()
+            .map(|p| aura_core::ParamSpec {
+                name: crate::axes::wrapped_to_raw_axis(&p.name).to_string(),
+                kind: p.kind,
+            })
+            .collect();
 
         // The member's resolved input binding (campaign data.bindings
         // overrides win over name defaults). A refusal is a member fault,
@@ -173,7 +188,7 @@ impl MemberRunner for DefaultMemberRunner<'_> {
         let mut report = run_blueprint_member(
             signal,
             &point,
-            &space,
+            &manifest_space,
             sources,
             (from, to),
             0,
@@ -490,7 +505,28 @@ pub fn persist_campaign_traces(
             // is the member report's own `manifest.window` — already
             // epoch-ns (`run_blueprint_member` stamped the post-seam
             // bounds), so no second ms->ns crossing here.
-            let point = point_from_params(&space, &member_report.manifest.params)?;
+            //
+            // #328: `member_report.manifest.params` is RAW (this cycle's tidy
+            // fix put the real/campaign mint on the raw frame too), but
+            // `point_from_params` still keys by the exact WRAPPED `space`
+            // name — translate each recorded name onto its matching wrapped
+            // slot first (`raw_matches_wrapped`, tolerant of either shape, the
+            // same `reproduce_family_in` recipe), never re-resolving by a
+            // renamed identity.
+            let wrapped_params: Vec<(String, Scalar)> = member_report
+                .manifest
+                .params
+                .iter()
+                .map(|(n, v)| {
+                    let wrapped = space
+                        .iter()
+                        .find(|p| crate::axes::raw_matches_wrapped(n, &p.name))
+                        .map(|p| p.name.clone())
+                        .unwrap_or_else(|| n.clone());
+                    (wrapped, *v)
+                })
+                .collect();
+            let point = point_from_params(&space, &wrapped_params)?;
             let (from, to) = member_report.manifest.window;
             let no_data = || {
                 format!(

crates/aura-std/Cargo.toml

@@ -7,13 +7,6 @@ publish.workspace = true
 
 [dependencies]
 aura-core = { path = "../aura-core" }
-# DST-correct wall-clock math for the `Session` node. A vetted
-# standard crate for timezone/DST — never hand-rolled (C16 per-case policy).
-# `chrono` is already a transitive workspace dep (0.4 via aura-ingest's
-# data-server); aligned to that major. `chrono-tz` brings the IANA `Europe/Berlin`
-# zone + DST transitions.
-chrono = { version = "0.4", default-features = false, features = ["clock"] }
-chrono-tz = { version = "0.10", default-features = false }
 
 [dev-dependencies]
 aura-strategy = { path = "../aura-strategy" }

crates/aura-std/src/lincomb.rs

@@ -7,10 +7,15 @@
 //! indexed `F64` knobs that `Composite::param_space` aggregates (C8/C12/C19).
 
 use aura_core::{
-    Cell, Ctx, FieldSpec, Firing, Node, NodeSchema, ParamSpec, PortSpec, PrimitiveBuilder,
-    ScalarKind,
+    ArgKind, ArgSpec, ArgValue, Cell, Ctx, FieldSpec, Firing, Node, NodeSchema, ParamSpec, PortSpec,
+    PrimitiveBuilder, ScalarKind,
 };
 
+/// The declared construction args of a `LinComb` recipe: `arity` fixes the
+/// node's input/param count (topology, C19), taken through the `args`
+/// channel instead of a Rust-side builder parameter.
+const LINCOMB_ARGS: &[ArgSpec] = &[ArgSpec { name: "arity", kind: ArgKind::Count }];
+
 /// Weighted sum of `N` f64 inputs: `Σ weights[i] · input[i]`. The `weights` are
 /// construction parameters that configure the node and fix its arity
 /// (`weights.len()` inputs, in slot order). Emits `None` until *all* inputs
@@ -40,10 +45,29 @@ impl LinComb {
         Self { weights, out: [Cell::from_f64(0.0)] }
     }
 
-    /// The param-generic recipe for a blueprint primitive. The `arity` is topology
-    /// (fixed per blueprint, C19), taken as a builder arg; only the weight *values*
-    /// are injected, slot by slot, through `LinComb::new` (the single sizing gate).
-    pub fn builder(arity: usize) -> PrimitiveBuilder {
+    /// Roster factory: zero-arg, arg-bearing. `arity` is topology (fixed per
+    /// blueprint, C19), now taken through the `args` channel instead of a
+    /// Rust-side parameter.
+    pub fn builder() -> PrimitiveBuilder {
+        PrimitiveBuilder::pending(
+            "LinComb",
+            "linear combination of its inputs with constant weights",
+            LINCOMB_ARGS,
+            Self::make,
+        )
+    }
+
+    /// Turn a validated `arity` into the real, arity-sized signature; only
+    /// the weight *values* are injected, slot by slot, through `LinComb::new`
+    /// (the single sizing gate) once params are bound/built.
+    fn make(values: &[(String, ArgValue)]) -> PrimitiveBuilder {
+        let arity = values
+            .iter()
+            .find_map(|(n, v)| match (n.as_str(), v) {
+                ("arity", ArgValue::Count(n)) => Some(*n),
+                _ => None,
+            })
+            .expect("try_args validated `arity` as ArgKind::Count before calling make");
         let inputs = (0..arity)
             .map(|i| PortSpec { kind: ScalarKind::F64, firing: Firing::Any, name: format!("term[{i}]") })
             .collect();
@@ -63,6 +87,13 @@ impl LinComb {
             )),
         )
     }
+
+    /// Rust-path convenience — same recipe as the data path (twin identity).
+    pub fn configured(arity: usize) -> PrimitiveBuilder {
+        Self::builder()
+            .try_args(&[("arity".to_string(), arity.to_string())])
+            .expect("configured: a positive arity is always the canonical strict-form Count string")
+    }
 }
 
 impl Node for LinComb {
@@ -149,7 +180,7 @@ mod tests {
 
     #[test]
     fn input_slots_are_named_term_index() {
-        let lc = LinComb::builder(3);
+        let lc = LinComb::configured(3);
         let names: Vec<String> = lc.schema().inputs.iter().map(|p| p.name.clone()).collect();
         assert_eq!(names, ["term[0]", "term[1]", "term[2]"]);
     }
@@ -157,7 +188,7 @@ mod tests {
     #[test]
     fn chained_bind_reconstructs_positional_vector() {
         // bind BOTH weights, in reverse slot order, to DISTINCT values; build empty.
-        let builder = LinComb::builder(2)
+        let builder = LinComb::configured(2)
             .bind("weights[1]", Scalar::f64(2.0))
             .bind("weights[0]", Scalar::f64(0.5));
         assert!(builder.params().is_empty());
@@ -173,7 +204,7 @@ mod tests {
         assert_eq!(lc.eval(Ctx::new(&inputs, Timestamp(0))), Some([Cell::from_f64(11.0)].as_slice()));
 
         // partial: bind weights[0], leave weights[1] open → inject it at build
-        let partial = LinComb::builder(2).bind("weights[0]", Scalar::f64(0.5));
+        let partial = LinComb::configured(2).bind("weights[0]", Scalar::f64(0.5));
         assert_eq!(
             partial.params().iter().map(|p| p.name.as_str()).collect::<Vec<_>>(),
             ["weights[1]"],
@@ -187,4 +218,14 @@ mod tests {
         inputs2[1].push(Scalar::f64(3.0)).unwrap();
         assert_eq!(lc2.eval(Ctx::new(&inputs2, Timestamp(0))), Some([Cell::from_f64(11.0)].as_slice()));
     }
+
+    /// Twin identity (spec §aura-std): `configured(arity)` is exactly
+    /// `builder().try_args([("arity", arity)])`.
+    #[test]
+    fn lincomb_configured_twin_equals_builder_try_args() {
+        let via_configured = LinComb::configured(3);
+        let via_try_args = LinComb::builder().try_args(&[("arity".into(), "3".into())]).expect("valid arity configures");
+        assert_eq!(via_configured.construction_args(), via_try_args.construction_args());
+        assert_eq!(via_configured.schema(), via_try_args.schema());
+    }
 }

crates/aura-std/src/sma.rs

@@ -238,7 +238,7 @@ mod tests {
             vec![ParamSpec { name: "scale".into(), kind: ScalarKind::F64 }],
         );
         // vector knob expands flat to N indexed F64 entries
-        let lc = LinComb::builder(2).schema().params.clone();
+        let lc = LinComb::configured(2).schema().params.clone();
         assert_eq!(lc.len(), 2);
         assert_eq!(lc[0].name, "weights[0]");
         assert_eq!(lc[1].name, "weights[1]");

crates/aura-strategy/src/cost.rs

@@ -555,10 +555,10 @@ mod tests {
             ConstantCost::builder().schema().output.iter().map(|f| f.name.clone()).collect();
         assert_eq!(prod, COST_FIELD_NAMES.to_vec());
         let agg_out: Vec<String> =
-            CostSum::builder(1).schema().output.iter().map(|f| f.name.clone()).collect();
+            CostSum::configured(1).schema().output.iter().map(|f| f.name.clone()).collect();
         assert_eq!(agg_out, COST_FIELD_NAMES.to_vec());
         let agg_in: Vec<String> =
-            CostSum::builder(1).schema().inputs.iter().map(|p| p.name.clone()).collect();
+            CostSum::configured(1).schema().inputs.iter().map(|p| p.name.clone()).collect();
         let expected: Vec<String> =
             COST_FIELD_NAMES.iter().map(|f| format!("cost[0].{f}")).collect();
         assert_eq!(agg_in, expected);

crates/aura-strategy/src/cost_sum.rs

@@ -7,9 +7,15 @@
 //! the cost path is uniform whether one or several cost nodes are wired.
 
 use aura_core::{
-    Cell, Ctx, FieldSpec, Firing, Node, NodeSchema, PortSpec, PrimitiveBuilder, ScalarKind,
+    ArgKind, ArgSpec, ArgValue, Cell, Ctx, FieldSpec, Firing, Node, NodeSchema, PortSpec,
+    PrimitiveBuilder, ScalarKind,
 };
 
+/// The declared construction args of a `CostSum` recipe: `n_costs` fixes the
+/// node's input count (topology, C19), taken through the `args` channel
+/// instead of a Rust-side builder parameter.
+const COST_SUM_ARGS: &[ArgSpec] = &[ArgSpec { name: "n_costs", kind: ArgKind::Count }];
+
 /// The cost-record field triple and its width come from the shared cost contract
 /// (`crate::cost::{COST_FIELD_NAMES, COST_WIDTH}`) — one source of truth, read by
 /// both the producer side (`cost_node_builder`) and this aggregator. The input-name
@@ -32,10 +38,29 @@ impl CostSum {
         Self { n_costs, out: [Cell::from_f64(0.0); COST_WIDTH] }
     }
 
-    /// The param-generic recipe. `n_costs` is topology (fixed per blueprint, C19),
-    /// captured by the build closure (no per-build params). The input names are a
-    /// lockstep contract with the connect side (`cost[k].<field>`).
-    pub fn builder(n_costs: usize) -> PrimitiveBuilder {
+    /// Roster factory: zero-arg, arg-bearing. `n_costs` is topology (fixed per
+    /// blueprint, C19), now taken through the `args` channel instead of a
+    /// Rust-side parameter.
+    pub fn builder() -> PrimitiveBuilder {
+        PrimitiveBuilder::pending(
+            "CostSum",
+            "sums cost-model contributions into one cost-in-R stream",
+            COST_SUM_ARGS,
+            Self::make,
+        )
+    }
+
+    /// Turn a validated `n_costs` into the real, arity-sized signature. The
+    /// input names are a lockstep contract with the connect side
+    /// (`cost[k].<field>`).
+    fn make(values: &[(String, ArgValue)]) -> PrimitiveBuilder {
+        let n_costs = values
+            .iter()
+            .find_map(|(n, v)| match (n.as_str(), v) {
+                ("n_costs", ArgValue::Count(n)) => Some(*n),
+                _ => None,
+            })
+            .expect("try_args validated `n_costs` as ArgKind::Count before calling make");
         let mut inputs = Vec::with_capacity(n_costs * COST_WIDTH);
         for k in 0..n_costs {
             for field in COST_FIELD_NAMES {
@@ -63,6 +88,13 @@ impl CostSum {
             move |_| Box::new(CostSum::new(n_costs)),
         )
     }
+
+    /// Rust-path convenience — same recipe as the data path (twin identity).
+    pub fn configured(n_costs: usize) -> PrimitiveBuilder {
+        Self::builder()
+            .try_args(&[("n_costs".to_string(), n_costs.to_string())])
+            .expect("configured: a positive n_costs is always the canonical strict-form Count string")
+    }
 }
 
 impl Node for CostSum {
@@ -140,7 +172,7 @@ mod tests {
 
     #[test]
     fn input_slots_are_named_cost_index_field() {
-        let s = CostSum::builder(2);
+        let s = CostSum::configured(2);
         let names: Vec<String> = s.schema().inputs.iter().map(|p| p.name.clone()).collect();
         assert_eq!(
             names,
@@ -161,4 +193,15 @@ mod tests {
     fn new_panics_on_zero() {
         let _ = CostSum::new(0);
     }
+
+    /// Twin identity (spec §aura-strategy): `configured(n_costs)` is exactly
+    /// `builder().try_args([("n_costs", n_costs)])`.
+    #[test]
+    fn cost_sum_configured_twin_equals_builder_try_args() {
+        let via_configured = CostSum::configured(2);
+        let via_try_args =
+            CostSum::builder().try_args(&[("n_costs".into(), "2".into())]).expect("valid n_costs configures");
+        assert_eq!(via_configured.construction_args(), via_try_args.construction_args());
+        assert_eq!(via_configured.schema(), via_try_args.schema());
+    }
 }

crates/aura-vocabulary/src/lib.rs

@@ -8,22 +8,27 @@
 //! takes it as an injected resolver, and a project `cdylib` later supplies its
 //! own (C16) through the same seam.
 //!
-//! Scope (#155): only the **zero-argument** `Type::builder()` factories are
-//! resolvable. Builders that take structural construction arguments
-//! (`LinComb(arity)`, `CostSum(n_costs)`, `SimBroker(pip_size)`, `Session(..)`)
-//! and the recording sinks (`Recorder`/`GatedRecorder`/`SeriesReducer`, which
-//! capture an `mpsc::Sender`) are deliberately absent — an absent `type_id`
+//! Scope (#155, extended #271): the roster resolves any type whose factory is
+//! `Type::builder()` with zero RUST-side arguments — this now includes
+//! arg-bearing types (`Session`, `LinComb`, `CostSum`), whose `builder()` is
+//! itself zero-arg and returns a *pending* `PrimitiveBuilder`, configured
+//! through the typed `args` channel (`try_args`) at the `add` op, before any
+//! bind. `SimBroker(pip_size)` stays out of scope: it is a plain scalar Rust
+//! parameter, not a structural construction arg — a different (unaddressed)
+//! gap. The recording sinks (`Recorder`/`GatedRecorder`/`SeriesReducer`, which
+//! capture an `mpsc::Sender`) stay deliberately absent — an absent `type_id`
 //! yields `None`, so the loader fails cleanly (`LoadError::UnknownNodeType`)
-//! rather than guessing. Serialising structural-axis construction args is a
-//! later, additive extension (#156/C20).
+//! rather than guessing.
 
 use aura_backtest::PositionManagement;
-use aura_market::{Resample, SessionFrankfurt};
+use aura_market::{Resample, Session, SessionFrankfurt};
 use aura_std::{
-    Abs, Add, And, Const, CumSum, Delay, Div, Ema, EqConst, Gt, Latch, Max, Min, Mul, RollingMax,
-    RollingMin, Scale, Select, Sign, Sma, Sqrt, Sub, When,
+    Abs, Add, And, Const, CumSum, Delay, Div, Ema, EqConst, Gt, Latch, LinComb, Max, Min, Mul,
+    RollingMax, RollingMin, Scale, Select, Sign, Sma, Sqrt, Sub, When,
+};
+use aura_strategy::{
+    Bias, CarryCost, ConstantCost, CostSum, FixedStop, LongOnly, Sizer, VolSlippageCost,
 };
-use aura_strategy::{Bias, CarryCost, ConstantCost, FixedStop, LongOnly, Sizer, VolSlippageCost};
 use aura_core::PrimitiveBuilder;
 
 /// The single roster source (#160): one `"TypeId" => Type` line per zero-arg
@@ -67,6 +72,7 @@ std_vocabulary_roster! {
     "CarryCost" => CarryCost,
     "Const" => Const,
     "ConstantCost" => ConstantCost,
+    "CostSum" => CostSum,
     "CumSum" => CumSum,
     "Delay" => Delay,
     "Div" => Div,
@@ -75,6 +81,7 @@ std_vocabulary_roster! {
     "FixedStop" => FixedStop,
     "Gt" => Gt,
     "Latch" => Latch,
+    "LinComb" => LinComb,
     "LongOnly" => LongOnly,
     "Max" => Max,
     "Min" => Min,
@@ -85,6 +92,7 @@ std_vocabulary_roster! {
     "RollingMin" => RollingMin,
     "Scale" => Scale,
     "Select" => Select,
+    "Session" => Session,
     "SessionFrankfurt" => SessionFrankfurt,
     "Sign" => Sign,
     "Sizer" => Sizer,
@@ -103,8 +111,11 @@ mod tests {
     /// label back, and only the rostered keys do. The builder's own `label()`
     /// is the independent oracle: a typo'd roster key fails the lookup-label
     /// agreement even though the match arms and the list share the same
-    /// (mistyped) literal; construction-arg nodes and sinks stay absent so the
-    /// loader fails cleanly rather than guessing.
+    /// (mistyped) literal; an unresolvable id and a sink stay absent so the
+    /// loader fails cleanly rather than guessing. `LinComb` — an arg-bearing
+    /// type, #271 — now resolves to a PENDING builder (its own `.label()`
+    /// still round-trips; it just is not yet constructible without
+    /// `try_args`).
     #[test]
     fn std_vocabulary_resolves_known_and_rejects_unknown() {
         for &type_id in std_vocabulary_types() {
@@ -116,9 +127,9 @@ mod tests {
                 "resolver key must round-trip to the same type label"
             );
         }
-        // an unknown id, a construction-arg node, and a sink are all absent
+        // an unknown id and a sink are absent; LinComb is now resolved (#271)
         assert!(std_vocabulary("nope").is_none());
-        assert!(std_vocabulary("LinComb").is_none());
+        assert!(std_vocabulary("LinComb").is_some());
         assert!(std_vocabulary("Recorder").is_none());
     }
 
@@ -129,14 +140,16 @@ mod tests {
     /// act. The residual #160 drift — a new zero-arg node never rostered at
     /// all — is not catchable here (no enumeration of zero-arg builders
     /// exists); it fails safe (clean `UnknownNodeType` on load, merely absent
-    /// from `--vocabulary`).
+    /// from `--vocabulary`). #271: `Session`/`LinComb`/`CostSum` moved IN
+    /// (arg-bearing types now have zero-arg `builder()` factories); the count
+    /// pin moves 33 -> 36.
     #[test]
     fn std_vocabulary_types_lists_exactly_the_resolvable_keys() {
         // known non-members stay out of the list
-        assert!(!std_vocabulary_types().contains(&"LinComb")); // construction-arg node
+        assert!(std_vocabulary_types().contains(&"LinComb")); // now arg-bearing-reachable (#271)
         assert!(!std_vocabulary_types().contains(&"Recorder")); // sink
         assert!(!std_vocabulary_types().contains(&"nope"));
-        // count guard: pins the roster at exactly 33 entries
-        assert_eq!(std_vocabulary_types().len(), 33);
+        // count guard: pins the roster at exactly 36 entries
+        assert_eq!(std_vocabulary_types().len(), 36);
     }
 }

docs/authoring-guide.md

@@ -40,7 +40,7 @@ the same shape every node in `aura-std` already follows.
   repo (two tiers)") — a strategy over the std vocabulary is a
   blueprint/campaign document, not Rust: the scaffold ships **one** closed
   `signal.json` starter that serves both verbs — `aura run` uses its bound
-  values as-is, `aura sweep --axis <bp>.fast.length=2,4,8` overrides them
+  values as-is, `aura sweep --axis fast.length=2,4,8` overrides them
   (bound = default, not fixed); `--list-axes` lists the open knobs and the
   bound defaults alike, so every override target is discoverable.
 - **A project-specific *native* node type** — the moment §0's three-part
@@ -49,8 +49,9 @@ the same shape every node in `aura-std` already follows.
   `src/lib.rs`, registered under the project's own `<namespace>::` prefix)
   and appends its path to the project's `Aura.toml [nodes]` section.
 - **A block promoted to universal** — reused across projects and folded into
-  the engine itself — lives in `crates/aura-std/src/`, unprefixed, and is
-  rostered in `crates/aura-std/src/vocabulary.rs` instead of a node crate's
+  the engine itself — lives in `crates/aura-std/` (or its sibling domain
+  crates: `aura-market`, `aura-strategy`), unprefixed, and is rostered in
+  `crates/aura-vocabulary/src/lib.rs` instead of a node crate's
   `vocabulary()` function. The pattern below is identical either way; only
   the rostering call site differs (see "Rostering the type" below).
 
@@ -89,11 +90,16 @@ Every node type — std or project-local — is three things:
      `aura_core::aura_project!` macro wires up (every `aura new` scaffold
      emits a starter pair — see the worked example below). Add one match arm
      to `vocabulary()` and one entry to `type_ids()`'s slice.
-   - **Std-side** (only when promoting a node into `aura-std` itself): one
-     line in the `std_vocabulary_roster!` macro invocation in
-     [`crates/aura-std/src/vocabulary.rs`](../crates/aura-std/src/vocabulary.rs)
+   - **Std-side** (only when promoting a node into the shipped std
+     vocabulary): one line in the `std_vocabulary_roster!` macro invocation in
+     [`crates/aura-vocabulary/src/lib.rs`](../crates/aura-vocabulary/src/lib.rs)
      — `"TypeId" => Type,` — which expands into both the resolver `match` and
-     the enumerable type-id list, so the two surfaces cannot drift apart.
+     the enumerable type-id list, so the two surfaces cannot drift apart. A
+     zero-arg `Type::builder()` rosters directly; an **arg-bearing** type
+     (structural, non-scalar construction — see "Session anchoring" below and
+     `docs/glossary.md`'s `construction arg` entry, #271) rosters the exact
+     same way — its `builder()` is itself zero-arg, returning a *pending*
+     recipe the `add` op's `args` configures before any `bind`.
    An unrostered type fails safe either way: the loader refuses with a clean
    `LoadError::UnknownNodeType` naming the missing id, and the type is simply
    absent from `aura graph introspect --vocabulary` — never a silent partial
@@ -221,14 +227,15 @@ $ aura graph build < smacross.json > blueprint.json
 Nodes are referenced by an **identifier** (given by `add`, see below); ports
 are dotted `<identifier>.<port>` on both sides of a wire.
 
-### The ten ops
+### The eleven ops
 
 | op | JSON shape | does |
 |---|---|---|
+| `name` | `{"op":"name","name":<str>}` | set the composite's **render name**, script-level and at-most-once (a second `name` op refuses: `a script names its blueprint at most once`). The name must be a single path segment (non-empty, no `/`, `\`, `.` or `..`) since it keys a trace directory (`traces/<name>/`) at run time. Omitting the op keeps the CLI's own default, `"graph"`. |
 | `doc` | `{"op":"doc","text":<str>}` | declare the composite's one-line meaning (C29) — the op-script twin of the Rust builder's `.doc(...)`. Required before `aura graph register` accepts the product (the store refuses a doc-less composite); at most one per script (a second refuses: `a doc op may appear at most once`). The text is gated: empty or merely restating the composite's name refuses at register. |
 | `source` | `{"op":"source","role":<str>,"kind":<ScalarKind>}` | reserve a bound root **source** role of `kind` — a real input the harness feeds (e.g. `"price"`). |
 | `input` | `{"op":"input","role":<str>}` | reserve an open root **input** role (kind inferred from the slots it feeds) — the formal parameter of an **open pattern**, a fragment meant to be wired by an *enclosing* graph. An open pattern builds and registers like any blueprint. Running it standalone is governed by the ordinary run gates: the harness binds input roles to archive columns **by name** (C26), so a pattern whose roles match the data runs as-is; what refuses, by name, is a role the harness cannot bind — or the run surface's other gates (a signal without a bias output or tap; free knobs). |
-| `add` | `{"op":"add","type":<TypeId>,"name":<str>?,"bind":{<param>:<Scalar>}?}` | instantiate a node of a type in the closed vocabulary (`aura graph introspect --vocabulary`) — see §0 below for how a type gets into that vocabulary in the first place. `name` becomes the node's identifier for later ops (default: the type's own lowercase label — two unnamed nodes of the same type then collide). `bind` sets zero or more of its params. |
+| `add` | `{"op":"add","type":<TypeId>,"name":<str>?,"args":{<arg>:<str>}?,"bind":{<param>:<Scalar>}?}` | instantiate a node of a type in the closed vocabulary (`aura graph introspect --vocabulary`) — see §0 below for how a type gets into that vocabulary in the first place. `name` becomes the node's identifier for later ops (default: the type's own lowercase label — two unnamed nodes of the same type then collide). `args` (#271) configures an **arg-bearing** type's structural, non-scalar construction (`Session`'s timezone/open, `LinComb`/`CostSum`'s arity) — a closed table of string values, applied BEFORE `bind`; `aura graph introspect --node <T>` lists a type's declared `arg` rows. `bind` sets zero or more of the (now real) params. |
 | `use` | `{"op":"use","ref":{"content_id":<id-or-prefix>}\|{"name":<label>},"name":<str>?,"bind":{<path>:<Scalar>}?}` | splice a **registered blueprint** into the graph as a nested composite under an instance identifier (`name`; default: the stored composite's own name). The ref resolves by content id (full or unique prefix) or by a register-time label; `graph build` echoes every resolution (`aura: note: use "…": … -> <id>`) so the exact id can be pinned. The instance's open input roles wire as `<instance>.<role>`, its outputs as `<instance>.<field>`; its open params surface path-qualified (`<instance>.<node>.<param>`), sweepable (ganging an instance's params is not yet supported — the `gang` op refuses a composite instance's member path). A doc-less stored source refuses at the op (C29). The emitted blueprint contains the subgraph *inline* — no reference survives into the artifact. |
 | `feed` | `{"op":"feed","role":<str>,"into":[<port>, …]}` | fan a previously-declared role into one or more interior input slots, all-or-nothing (a failing target leaves none of the batch wired). |
 | `connect` | `{"op":"connect","from":<port>,"to":<port>}` | wire one interior output field to one interior input slot. A `connect` that would close a dataflow cycle is rejected immediately — the only legal feedback path is an explicit delay/state node (domain invariant 5). |
@@ -236,6 +243,14 @@ are dotted `<identifier>.<port>` on both sides of a wire.
 | `tap` | `{"op":"tap","from":<port>,"as":<str>}` | declare a **measurement tap** on an interior output field under the name `as` — the output-side twin of `expose` (a recorded observation point, not a boundary output; a `Composite.taps` entry, C27). A single `aura run` constructs a recorder at each declared tap and persists its per-cycle series as a `ColumnarTrace`; a sweep leaves it inert. Tap names are their own namespace and must be unique (a second `tap` under one name refuses: `duplicate tap name`). |
 | `gang` | `{"op":"gang","as":"channel_length","into":["channel_hi.length","channel_lo.length"]}` | Fuse two or more sibling params into ONE public knob: the member addresses leave the sweepable param space and `as` replaces them; the bound or swept value fans out to every member at bootstrap. Members must share one scalar kind and stay open (un-bound). |
 
+Omitting `name` is fine for a single strategy, but it has three live
+consequences once a project has more than one: every unnamed store document
+is indistinguishable by name (`"graph"` again), every unnamed strategy's
+default tap recording lands in the same shared `traces/graph/` directory
+(later runs overwrite earlier ones), and two `use`-splices of unnamed
+blueprints collide on the same default instance identifier (`graph`) inside
+the same composing script. A one-line `name` op dissolves all three at once.
+
 Value forms are the typed-tag representations used everywhere in this
 family of artifacts:
 
@@ -278,7 +293,7 @@ A param therefore has three states: **open** (an axis every sweep MUST bind),
 **bound** (a default any axis MAY override, #246), and **ganged** (open, but
 fused with its siblings under ONE public knob declared by a `gang` op; the
 member addresses are unbindable and only the gang's own single-segment name —
-wrapped like any knob, e.g. `graph.channel_length` — appears in `--list-axes`).
+e.g. `channel_length` — appears in `--list-axes`).
 
 ### Worked example: declaring a measurement tap
 
@@ -338,10 +353,42 @@ separate in-session bool — `bars_since_open` alone is the contract. DST is
 handled by `chrono-tz`, so the same local minute reads the same index in
 summer (CEST) and winter (CET).
 
+The index is derived from the clock (`ctx.now()`), never counted from trigger
+firings — so the trigger's cadence only sets how *often* the node emits, not
+what it emits. Feeding a denser stream (e.g. a raw m1 `price`) is equally
+valid: the node fires once per input tick and reports the same
+`period_minutes`-bar index throughout that bar. The once-per-bar wiring above
+is the convention when you want exactly one emission per completed bar; it is
+not a correctness requirement.
+
 Wire it like any node —
 `{"op":"add","type":"SessionFrankfurt","bind":{"period_minutes":{"I64":15}}}`,
 feed its `trigger` from a once-per-bar stream, and read `bars_since_open`.
 
+**Any other timezone/open: `Session` + `args` (#271).** `SessionFrankfurt`
+stays baked sugar for the one Frankfurt open; the canonical path for ANY IANA
+timezone and local open time is the base `Session` type through the typed
+construction-args channel — `args` configures it BEFORE `bind`:
+
+```json
+{"op":"add","type":"Session","name":"ny",
+ "args":{"tz":"America/New_York","open":"09:30"},
+ "bind":{"period_minutes":{"I64":15}}}
+```
+
+`tz` is `chrono_tz`'s own exact, case-sensitive IANA name (`"berlin"` refuses;
+`"Europe/Berlin"` accepts); `open` is strict zero-padded local `HH:MM`
+(`"9:30"` refuses; `"09:30"` accepts); a `Count` arg (`LinComb`/`CostSum`'s
+arity) is a plain positive decimal — no sign, no leading zeros (`"03"`
+refuses; `"3"` accepts). The accepted string IS the canonical form, no
+normalization — and note the deliberate asymmetry: each kind's canonical
+form is its domain's conventional notation, fixed-width for wall-clock
+times, minimal for numbers. Giving `Session` no `args` at all refuses the `add`
+op (`node <name> is missing required arg "tz"`) — an arg-bearing type never
+silently enters the graph half-configured. `aura graph introspect --node
+Session` lists both declared `arg` rows with their kind and hint text before
+you write the JSON.
+
 ### Commands
 
 ```
@@ -375,23 +422,39 @@ slow.length:I64
 bias.scale:F64
 ```
 
-These printed names are the **raw param-space namespace**: op-script params
-and a campaign document's `strategies[].axes` keys (§3) share this one raw
-form. There is a third, *wrapped* surface: the dissolved `aura sweep
-<blueprint> --axis` CLI (glossary `sweep`) accepts only the names `aura
-sweep <blueprint> --list-axes` prints — the raw name prefixed with the
-root-composite instance name, `graph.<param>` — never the raw form; the
-campaign document the sweep sugar generates still stores the raw form
-(#210):
+These printed names are the **one** axis namespace (#328): op-script params, a
+campaign document's `strategies[].axes` keys (§3), and `aura sweep <blueprint>
+--list-axes` / `--axis` (glossary `sweep`) all speak the same raw
+`<node>.<param>` form — `--params` and `--list-axes` are line-identical (open
+params bare, bound params trailing `default=<value>`), and every discovered
+name is verbatim legal as a document axis key, bound params included (#246's
+re-open contract):
 
 ```
-raw   (--params, campaign axes):  fast.length
-wrapped (--list-axes, --axis):    graph.fast.length
+$ aura sweep smacross.json --axis fast.length=3:9:2      # synthetic: raw works
+$ aura sweep smacross.json --axis bias.scale=0.25,0.5 --real ...  # real: raw works
+```
+
+The older `<blueprint>.<node>.<param>` wrapped form (e.g. `graph.fast.length`,
+what pre-#328 transcripts and `--list-axes` output used to print) is retired
+from the surface; naming it refuses with a translation pointer to the raw
+candidate, on both intake seams:
+
+```
+$ aura sweep smacross.json --axis graph.fast.length=...
+aura: axis "graph.fast.length": axis names are raw node.param paths —
+use "fast.length" (the wrapped --list-axes form was retired, #328)
+
+$ aura campaign validate wrapped.json       # a document quoting an old transcript
+aura: campaign references do not resolve:
+  strategy f5fdf729d0333f0286c19d57143fb7933137f27a6128e72489c508096c7a2240:
+  axis "graph.fast.length" is not in the param space; axis names are raw
+  node.param paths — did you mean "fast.length"?
 ```
 
 A ganged knob's raw address has one path segment less than a member address
 would — it sits at the composite's own level, like a role name (e.g.
-`channel_length`, not `channel_hi.length`) — and wraps identically (`graph.channel_length`).
+`channel_length`, not `channel_hi.length`).
 
 `--content-id`, `--identity-id`, `--params`, and `graph register` all accept
 **either** shape: the raw op-script array or an already-built `#155`

docs/design/contracts/c15-resampling-sessions.md

@@ -17,10 +17,14 @@ stream; reference data feeds source/session nodes from beside the hot path.
 
 **Session context — `bars_since_open` is the shipped contract (#154).** The
 session-context node `Session` (`crates/aura-market/src/session.rs`) emits
-**one** scalar stream, `bars_since_open: i64` (tz-aware, DST-correct, over a
-baked Frankfurt open), and takes no scalar params; the zero-arg
-`SessionFrankfurt` roster preset (#261) exposes it with a single
-`period_minutes` knob. This is a deliberate narrowing pinned in the node's own
+**one** scalar stream, `bars_since_open: i64` (tz-aware, DST-correct), over a
+timezone/open time that is now data-authorable via the typed construction-args
+channel (`Session` roster-reaches `std_vocabulary` as an arg-bearing type,
+#271: `args: {"tz": <IANA name>, "open": "HH:MM"}`, applied before its one
+scalar param, `period_minutes`). The zero-arg `SessionFrankfurt` roster preset
+(#261) stays as baked sugar over the 09:00 `Europe/Berlin` open — the
+canonical path for any OTHER open/timezone is `Session` + `args`, not a new
+preset per market. This is a deliberate narrowing pinned in the node's own
 contract: `bars_since_open` alone is the gate — a downstream `EqConst(== N)`
 subsumes an `in_session: bool` stream (pre-open instants read `<= 0`, which
 never match), and nothing consumes a `session_open_ts: timestamp`. The two

docs/design/contracts/c18-registry.md

@@ -133,6 +133,18 @@ show <content-id>` prints a registered document's canonical bytes (#300), so the
 generate → retrieve → hand-extend → re-register loop needs no direct store
 filesystem access.
 
+**The bound-override coincidence (#246, ratified #328).** A campaign axis naming a
+**bound** param of the referenced blueprint is deliberately accepted alongside one
+naming an open param: `validate_campaign_refs` checks each axis's name against
+`param_space()` **OR** `bound_param_space()` — the bound value stands as the
+axis's default, and the axis's own values re-open it for that campaign. There is
+no schema flag distinguishing the two cases (no `open`/`bound` marker on the axis
+entry); name coincidence against one of the two namespaces IS the mechanism, and
+the referenced blueprint is the single source of truth for which namespace a name
+falls in. Pinned by
+`referential_tier_accepts_a_kind_correct_axis_over_a_bound_param`
+(`aura-registry/src/lib.rs`).
+
 **The campaign executor.** `aura campaign run <file|content-id>` executes a
 campaign (a file is register-then-run sugar; the content id is canonical): a
 zero-fault referential gate, then the process pipeline. The executable shape is

docs/design/contracts/c23-graph-compilation.md

@@ -9,7 +9,12 @@ entirely (there is no composite in the flat graph). The blueprint's field /
 input-role *names* are **non-load-bearing** — the wiring resolves by index, and names
 survive at most as **informative debug symbols** (exactly as `FieldSpec.name` already
 is, C8), kept for tracing / rendering (C9 graph-as-data) but carrying no run
-semantics. The flat graph is then the target of **behaviour-preserving optimisation**
+semantics. (Reconciling with the root composite's own render name, #331: that
+claim stands unweakened — the name never influences compilation, identity, or
+execution semantics — but at *run* time, outside compilation, it keys the trace
+directory (`traces/<name>/`); that operational role, not any load-bearing
+weight inside the flat graph, is exactly why the authored-blueprint intakes
+shape-gate it.) The flat graph is then the target of **behaviour-preserving optimisation**
 — any transform that leaves every observable sink trace bit-identical (C1 is the
 correctness invariant) — on two levels:
 

docs/design/contracts/c24-blueprint-data.md

@@ -70,8 +70,10 @@ loop for the round-trippable vocabulary.
 
 **Out of the round-trippable set** (deliberate; fails clean as `UnknownNodeType`):
 recording sinks (they capture an `mpsc::Sender` — runtime identity, not param-generic
-data, C19) and construction-arg builders (`LinComb` / `CostSum` / `SimBroker` /
-`Session` — structural-axis args, a C20 concern), additively addable later (#156).
+data, C19) and `SimBroker` (a scalar-typed baked value, a narrower gap than the args
+channel). `LinComb` / `CostSum` / `Session` — formerly listed here — entered the
+round-trippable set with #271's typed construction args (see the add-op `args`
+clause and the data-driven `format_version` below).
 
 ### Runs and families are built FROM blueprint-data
 
@@ -126,9 +128,14 @@ there is no default; pin a knob you do not want to vary with a single-value axis
 single `blueprint_axis_probe` (`aura-runner`) single-sources the wrapped probe for the
 sweep terminal, the MC closed-check, and the listing, so **listed == swept by
 construction** (and stays so across the harness retirement — the listing tracks
-whatever the sweep actually resolves). The names are prefixed by the current wrapping
-(`sma_signal.fast.length`, the nested-composite prefix), which is why discovery lives
-on the sweep verb (it owns the wrapping), not `graph introspect`. `--trace` on
+whatever the sweep actually resolves). One raw namespace, `<node>.<param>` (a splice
+path keeps its interior path, e.g. `anchor.sess.period_minutes`), is the only
+user-facing axis name (#328): `graph introspect --params` and `--list-axes` are
+line-identical (open params bare, bound params with `default=`) and both print
+exactly what `--axis` binds, on both sweep routes. The wrapped
+`<blueprint>.<node>.<param>` form the probe still resolves against internally is
+retired from the surface, with a translation refusal naming the raw candidate on
+both intake seams (`--axis` and `campaign validate`). `--trace` on
 `sweep` / `walkforward` writes per-member traces on the real-data campaign path
 (depth-2 fan-out, chartable by the printed family handle, #224); the synthetic path
 still refuses (`run` / `mc` refuse `--trace` outright). The live trace-writer is the
@@ -189,18 +196,42 @@ rejected at construction.
 
 The op-script is a JSON **array of ops**, each object internally tagged by `"op"`,
 replayed in order; nodes are referenced **by identifier**, ports as dotted
-`<identifier>.<port>`. The ten verbs:
+`<identifier>.<port>`. The eleven verbs:
 
+- `name` — `{"op":"name","name":<str>}` — set the composite's render name
+  (#331), script-level and at-most-once (a second refuses); omitted, the
+  built composite keeps the CLI's own seed default (`"graph"`). Gated by a
+  shared shape check (non-empty, single path segment, no `/`, `\`, `.` or
+  `..`) applied at this op intake **plus every CLI intake that reads an
+  authored blueprint envelope from a file** — `register`, `introspect
+  --content-id <FILE>`, the bare graph-file viewer, `run`, `introspect
+  --params <FILE>`, `sweep --list-axes`, and each of
+  `sweep`/`walkforward`/`mc`/`generalize`'s file-reading entry points
+  (synthetic and `--real` alike) — one class of intake, one gate. The
+  refusal's core sentence (`name_gate_fault_prose`) is byte-uniform across
+  every one of these sites; only the leading context prefix varies —
+  `run` and the bare graph-file viewer prepend `aura: <path>:`, while
+  `register`, the sweep-axis family (`validate_and_register_axes`), and
+  `introspect` prepend bare `aura: `. Store read-back (`reproduce`, `use`
+  resolution, `introspect`/`--params` by content id) stays deliberately
+  ungated — C29: a registered artifact is never retroactively invalidated.
 - `source` — `{"op":"source","role":<str>,"kind":<ScalarKind>}` — declare a root
   source role producing a base column of `kind`.
 - `input` — `{"op":"input","role":<str>}` — declare a root input role (kind inferred
   from the slots it feeds) — a reusable **pattern**'s formal parameter, left open
   until an enclosing graph wires it (#317's open patterns): `finish()` accepts an
   op-script that never binds it, only `compile`/bootstrap require it bound.
-- `add` — `{"op":"add","type":<TypeId>,"name":<str>?,"bind":{<param>:<Scalar>}?}` —
+- `add` — `{"op":"add","type":<TypeId>,"name":<str>?,"args":{<arg>:<str>}?,"bind":{<param>:<Scalar>}?}` —
   add a node of compiled-in type identity `type`; **`name` is its identifier**
   (mirrors the builder's `.named(...)`; defaults to the lowercased type label, so
-  two unnamed nodes of one type collide); `bind` sets params.
+  two unnamed nodes of one type collide); `args` (#271) configures an **arg-bearing**
+  type's structural, non-scalar construction (`Session`'s IANA timezone/open,
+  `LinComb`/`CostSum`'s arity) through the closed, load-time-validated `ArgKind`
+  table (`Tz`/`TimeOfDay`/`Count`) — applied BEFORE `bind`, so a bound param
+  `args` unlocks (e.g. `LinComb`'s `weights[i]`) is only bindable once `arity` is
+  consumed; an arg-bearing type given no `args` refuses (`BadArg(MissingArg)`), a
+  `Plain` type given `args` it does not declare also refuses
+  (`BadArg(NotArgBearing)`); `bind` sets the (now real) params.
 - `feed` — `{"op":"feed","role":<str>,"into":[<port>,…]}` — fan a root role into
   interior input slots.
 - `connect` — `{"op":"connect","from":<port>,"to":<port>}` — wire an interior output
@@ -262,12 +293,21 @@ Tier-1 (additive-optional) is serde-default silent-ignore with **no** `format_ve
 bump — a new optional field defaults to prior behaviour (C1). Tier-2 (must-understand:
 a new node type, edge semantics, or structural-axis kind) **bumps** `format_version` so
 an old reader refuses cleanly (`LoadError::UnsupportedVersion` / `UnknownNodeType`).
-**Pre-ship dormancy (#61):** until the first external ship there are no out-of-repo
-readers — reader and writer change atomically in one commit — so the Tier-2 bump
-discipline is dormant and structurally-semantic additions (the `gangs` section) land as
-additive-optional fields of v1; the first ship consciously freezes v1, gangs included,
-and activates the bump discipline. The per-section required-flag scheme is deferred (no
-current Tier-2 section to validate it; recorded on #156).
+**Pre-ship dormancy (#61, ended by #271):** until the first external ship there were
+no out-of-repo readers — reader and writer changed atomically in one commit — so the
+Tier-2 bump discipline lay dormant and structurally-semantic additions (the `gangs`
+section) landed as additive-optional fields of v1. #271's construction args are the
+first exercised Tier-2 bump (data-driven, next paragraph); v1 remains the version of
+every args-free document, gangs included. The per-section required-flag scheme stays
+deferred (no per-section case yet; recorded on #156).
+
+**First data-driven bump (#271):** construction args are the first Tier-2 case whose
+version is decided PER DOCUMENT, not a single global bump. The writer emits
+`format_version: 1` for an args-free document (byte-identical to every pre-#271
+document — content ids stable) and `2` the moment any primitive, at any composite
+nesting depth, carries `args` — the must-understand signal an old (pre-#271) reader
+needs, since it cannot construct a pending arg-bearing type at all. The loader accepts
+the closed range `1..=2`.
 
 ### Enforcement shift — invariant 9 on the data plane
 

docs/glossary.md

@@ -11,6 +11,10 @@ Entries are alphabetical.
 
 ---
 
+### arg kind
+**Avoid:** ArgKind, construction-arg type
+The closed vocabulary of construction-arg value shapes (`Tz`/`TimeOfDay`/`Count`, #271) — deliberately NOT a `scalar base type`: args are bootstrap metadata, never streamed, so the two closedness axes stay separate. Each kind's accepted strict form IS its canonical form (an exact IANA name; zero-padded `HH:MM`; a plain positive decimal count, no sign or leading zeros) — there is no normalization layer, so a near-miss string refuses rather than being rewritten. The per-kind forms are deliberately asymmetric (`"03"` refuses as a count while `"09:30"` requires the pad): canonical is each domain's conventional notation — fixed-width for wall-clock times, minimal for numbers.
+
 ### atomic sim unit
 **Avoid:** atomic unit, sim unit
 The primitive `(frozen topology + param-set + data-window + RNG-seed) → deterministic run → metrics` over which the four orchestration axes operate. One frozen-topology unit equals one harness instance.
@@ -33,7 +37,7 @@ The param-generic, input-role-generic graph-as-data produced by running a Rust b
 
 ### blueprint label
 **Avoid:** —
-A registry-level name pointing at a registered blueprint's content id (`graph register --name <label>`, #317) — a mutable, latest-wins pointer over the immutable content-addressed store, not a second identity: re-registering under an existing label *repoints* it (the earlier content id stays reachable by its own id, never invalidated). `graph introspect --registered` lists every label with its content-id prefix and root `doc` line — the discovery surface a `use (op)` reference by name resolves against.
+A registry-level name pointing at a registered blueprint's content id (`graph register --name <label>`, #317) — a mutable, latest-wins pointer over the immutable content-addressed store, not a second identity: re-registering under an existing label *repoints* it (the earlier content id stays reachable by its own id, never invalidated). `graph introspect --registered` lists every label with its content-id prefix and root `doc` line — the discovery surface a `use (op)` reference by name resolves against. Orthogonal to the composite's own **render name** (the `name` field carried in the blueprint bytes, op-settable via `{"op":"name",...}`, #331; defaults to `"graph"` if omitted): the render name keys the run's trace directory (`traces/<name>/`) and a `use`-splice's default instance identifier, while the label is an explicit, separately-set store pointer.
 
 ### bootstrap
 **Avoid:** —
@@ -67,6 +71,10 @@ The type-erased 64-bit word holding one scalar-base-type value with its kind str
 **Avoid:** —
 A node that wires a sub-graph and exposes one output (a combined signal, or a strategy) — composition is fractal and acyclic. May carry an optional authored rationale (`doc`, #125) — a non-load-bearing debug symbol shown in the graph tooltip, identity-blind like the name. Also names the multi-column stream a node emits: the **record** a producer's `eval` returns, bundling 1..K base scalar columns (e.g. OHLCV), each bound field-wise by a consumer (C7/C8).
 
+### construction arg
+**Avoid:** construction-time param, arg
+A typed, closed, non-scalar construction input (`args`, #271) that configures an **arg-bearing** vocabulary type's structural shape — `Session`'s IANA timezone/open, `LinComb`/`CostSum`'s arity — through a second channel beside `bind`, consumed once at construction (`PrimitiveBuilder::try_args`) before any param binds, never streamed, never swept, never bound. Values are closed, load-time-validated strings (see `arg kind`); the accepted pairs are id-bearing (they enter the blueprint's content id, like `bind` values) and survive the identity projection.
+
 ### content id
 **Avoid:** —
 The SHA-256 (hex) of an artifact's byte-canonical form — for a blueprint, `blueprint_to_json` (the byte-exact identity that keys the reproduction store and anchors `aura reproduce`, stamped into a run manifest as the `topology hash`); for a `process document` / `campaign document`, its canonical JSON (keying the sibling registry stores). One primitive, library-hosted in `aura-research` (`content_id_of`; the CLI delegates). Surfaced as `aura graph|process|campaign introspect --content-id`; two artifacts share a content id only when their canonical bytes agree, debug names included — contrast `identity id`.
@@ -263,7 +271,7 @@ The four streamed scalar kinds — `i64`, `f64`, `bool`, `timestamp` (a newtype
 
 ### session node
 **Avoid:** session window
-A node that exposes session context as a scalar stream so session logic stays inside the stream model. The shipped `Session` / `SessionFrankfurt` node (`aura-std`) emits ONE `i64` field, `bars_since_open` — the count of completed bar-periods since the local (tz-aware, DST-correct) session open, indexed off the just-closed bar's close instant (in-session closes read exact positive multiples: 09:15→1, 09:45→3; pre-open ≤0). `SessionFrankfurt` bakes the Frankfurt 09:00 `Europe/Berlin` open with a single `period_minutes` knob; its `trigger` input only clocks it once per completed bar (the value is ignored). Calendars and instrument specs remain metadata beside the hot path.
+A node that exposes session context as a scalar stream so session logic stays inside the stream model. The shipped `Session` / `SessionFrankfurt` node (`aura-market`) emits ONE `i64` field, `bars_since_open` — the count of completed bar-periods since the local (tz-aware, DST-correct) session open, indexed off the just-closed bar's close instant (in-session closes read exact positive multiples: 09:15→1, 09:45→3; pre-open ≤0). `Session` is roster-reachable for ANY IANA timezone/open through the typed **construction arg** channel (#271: `args: {"tz": <IANA name>, "open": "HH:MM"}`, applied before its one scalar param, `period_minutes`); `SessionFrankfurt` stays as baked sugar over the Frankfurt 09:00 `Europe/Berlin` open. Its `trigger` input only clocks it once per completed bar (the value is ignored). Calendars and instrument specs remain metadata beside the hot path.
 
 ### sign-agreement
 **Avoid:** sign consistency, market breadth
@@ -323,7 +331,7 @@ The harness's structural parameterization — which strategy, instrument(s), bro
 
 ### sweep
 **Avoid:** param-sweep, parameter sweep
-An orchestration axis varying tuning params (grid or random) within a fixed structure. The inner, param-tuning loop, distinct from the structural experiment matrix. On a loaded blueprint every open knob (`--list-axes`) is **required** — a subset is refused with the missing knob named; pin an unwanted knob with a single-value axis (`--axis name=<one-value>`), there is no default. `aura sweep --axis` takes the `--list-axes`-printed, root-composite-wrapped name (e.g. `graph.fast.length`) — not the raw `param_space` name (`fast.length`) that `graph introspect --params` and a campaign document's axes use; the CLI strips exactly one leading wrapper segment (#210). The `aura sweep` CLI verb is now thin sugar over the `campaign document` path — its blueprint form (`<bp.json> --real`) translates to a generated, content-addressed campaign run through the one executor (#210); the built-in `--strategy` sweep surface was retired by #159 (its hard-wired harnesses removed) — sweep now runs from a blueprint + `--axis`, and a retired `--strategy` token falls to the generic usage error. A ganged pair contributes ONE axis.
+An orchestration axis varying tuning params (grid or random) within a fixed structure. The inner, param-tuning loop, distinct from the structural experiment matrix. On a loaded blueprint every open knob (`--list-axes`) is **required** — a subset is refused with the missing knob named; pin an unwanted knob with a single-value axis (`--axis name=<one-value>`), there is no default. One raw namespace, `<node>.<param>` (a splice path keeps its interior path), is the only axis name (#328): `graph introspect --params` and `aura sweep --list-axes` are line-identical (open params bare, bound params with `default=`), and `--axis` accepts exactly that raw form on both sweep routes — the older `<blueprint>.<node>.<param>` wrapped form (e.g. `graph.fast.length`) is retired from the surface; naming it on `--axis` refuses (`axis names are raw node.param paths — use "fast.length" …`), and quoting it in a campaign document gets a did-you-mean toward the raw candidate. The `aura sweep` CLI verb is now thin sugar over the `campaign document` path — its blueprint form (`<bp.json> --real`) translates to a generated, content-addressed campaign run through the one executor (#210); the built-in `--strategy` sweep surface was retired by #159 (its hard-wired harnesses removed) — sweep now runs from a blueprint + `--axis`, and a retired `--strategy` token falls to the generic usage error. A ganged pair contributes ONE axis.
 
 ### tap
 **Avoid:** probe, monitor, scope (for the observation slot — "probe" is taken by the sweep-terminal `blueprint_axis_probe` sense; the #77 `Recorder`→`Probe` rename was retired, 2026-07-21)
@@ -339,7 +347,7 @@ The `content id` of a run's signal blueprint in its run-record role: stamped int
 
 ### use (op)
 **Avoid:** —
-The construction op that splices a **registered** blueprint into the building graph as a nested `composite` under a chosen instance name (`{"op":"use","ref":{"content_id"|"name":…},"name":…,"bind":{…}}`, #317): the reference — a content id, a unique content-id prefix, or a `blueprint label` — resolves CLI-side, before the engine ever sees it; the fetched composite is C29-gated, spliced, and its resolution echoed on stderr (`aura: note:`, the existing benign marker). The emitted blueprint carries the splice inline as an ordinary nested composite — no reference or registry dependency survives into the artifact. An instance's open input roles become its `<instance>.<role>` in-ports, its output boundary fields its `<instance>.<field>` out-fields — the existing nested-composite param-prefix discipline extends unchanged (`graph.<instance>.<node>.<param>` on `sweep --list-axes`). Pairs with the `input` op: a pattern meant to be `use`d declares its formal parameters as open `input` roles, left unbound at `finish()` (#317's open-pattern amendment) — only running it standalone requires them bound.
+The construction op that splices a **registered** blueprint into the building graph as a nested `composite` under a chosen instance name (`{"op":"use","ref":{"content_id"|"name":…},"name":…,"bind":{…}}`, #317): the reference — a content id, a unique content-id prefix, or a `blueprint label` — resolves CLI-side, before the engine ever sees it; the fetched composite is C29-gated, spliced, and its resolution echoed on stderr (`aura: note:`, the existing benign marker). The emitted blueprint carries the splice inline as an ordinary nested composite — no reference or registry dependency survives into the artifact. An instance's open input roles become its `<instance>.<role>` in-ports, its output boundary fields its `<instance>.<field>` out-fields — the existing nested-composite param-prefix discipline extends unchanged (`<instance>.<node>.<param>`, the raw axis form since #328). Pairs with the `input` op: a pattern meant to be `use`d declares its formal parameters as open `input` roles, left unbound at `finish()` (#317's open-pattern amendment) — only running it standalone requires them bound.
 
 ### veto
 **Avoid:** risk-manager

fieldtests/construction-args/TRANSCRIPT.md

@@ -0,0 +1,217 @@
+# Fieldtest transcript — cycle #271 (typed construction args)
+
+Verbatim command/output capture for the `fieldtests/construction-args/` fixtures.
+Binary: `target/debug/aura` built from HEAD `6ca359a` via `cargo build --workspace`
+(debug profile). Runs used a scratch project `aura new ca_lab` (in `/tmp/ca_lab`);
+real data resolved from the built-in archive (`/mnt/tickdata/Pepperstone`). All
+op-scripts authored from the public interface only (README, authoring guide,
+glossary, design ledger C24, `aura graph introspect`).
+
+Public interface only — no crate source read.
+
+---
+
+## Discovery loop (axis 3) — is the args grammar learnable from the binary?
+
+```
+$ aura graph introspect --vocabulary | wc -l
+36
+
+$ aura graph introspect --node Session
+Session — bars elapsed since the session open, from the configured open time and timezone
+  arg    tz: Tz   (IANA timezone name, e.g. Europe/Berlin)
+  arg    open: TimeOfDay   (local wall-clock HH:MM)
+  note   ports and params form at construction; args are required
+
+$ aura graph introspect --node LinComb
+LinComb — linear combination of its inputs with constant weights
+  arg    arity: Count   (positive integer count)
+  note   ports and params form at construction; args are required
+
+$ aura graph introspect --node CostSum
+CostSum — sums cost-model contributions into one cost-in-R stream
+  arg    n_costs: Count   (positive integer count)
+  note   ports and params form at construction; args are required
+```
+
+The arg *grammar* (name, kind, hint) is fully self-describing. But `--node <T>`
+stops at the note — it does NOT reveal the post-construction ports/params. To
+learn the port names you must author a partial op-list carrying the args and pipe
+it through `--unwired`; to learn the param names you must build and `--list-axes`.
+Nothing on the `--node` surface names those follow-up steps. First naive guess at
+LinComb's input port was `lc.in0` — wrong:
+
+```
+$ echo '[{"op":"add","type":"LinComb","name":"lc","args":{"arity":"3"}}]' \
+    | aura graph introspect --unwired
+lc.term[0]:F64
+lc.term[1]:F64
+lc.term[2]:F64
+
+$ echo '[{"op":"add","type":"CostSum","name":"cs","args":{"n_costs":"3"}}]' \
+    | aura graph introspect --unwired
+cs.cost[0].cost_in_r:F64
+cs.cost[0].cum_cost_in_r:F64
+cs.cost[0].open_cost_in_r:F64
+cs.cost[1].cost_in_r:F64          (… ×3 slots, 3 fields each)
+```
+
+Weight param names, discovered only after a build:
+
+```
+$ aura graph build < lc_probe.ops.json > lc_probe.bp.json
+$ aura sweep lc_probe.bp.json --list-axes
+graph.lc.weights[0]:F64          # open by default → sweepable (C24)
+graph.lc.weights[1]:F64
+...
+```
+
+---
+
+## Example 1 — `ca_1_ny_session` (axis 1: non-Frankfurt Session as data)
+
+```
+$ aura graph build < ca_1_ny_session.ops.json > ca_1_ny_session.bp.json
+$ head -c 25 ca_1_ny_session.bp.json
+{"format_version":2,"blue          # arg-bearing → v2
+
+$ aura graph introspect --content-id --identity-id < ca_1_ny_session.ops.json
+5b085a5b3f411072e48d4b54717b3d09e88be50b0bd797d345c2ee90baa41c37   # content id
+4bf0513a4d2e852ab580fd8846737f57c1825b944ff9df1a48040a07fe92446b   # identity id
+
+# --- inside ca_lab/ ---
+$ aura run ca_1_ny_session.bp.json --real US500 --from 1725148800000 --to 1725580800000
+{"manifest":{... "topology_hash":"5b085a5b...b40d95cf"? -> 5b085a5b... (== content id) ...},
+ "metrics":{... "expectancy_r":0.7853745294474523,"n_trades":18 ...}}    (exit 0)
+
+# synthetic refuses cleanly (OHLC strategy, close-only synthetic stream):
+$ aura run ca_1_ny_session.bp.json
+aura: strategy "graph" consumes columns beyond close (open, high, low) —
+      synthetic data generates a close series only; run with --real <SYMBOL>
+```
+
+Full report captured in `ca_1_ny_session.run.json`.
+
+---
+
+## Example 2 — `ca_2_lincomb_blend` (axis 2: LinComb arity + weights + swept period)
+
+Three SMA spreads blended through `LinComb(arity 3)` with bound `weights[i]`,
+NY-session-gated, `Session.period_minutes` left OPEN (sweepable).
+
+```
+$ aura graph build < ca_2_lincomb_blend.ops.json > ca_2_lincomb_blend.bp.json
+$ head -c 25 ca_2_lincomb_blend.bp.json
+{"format_version":2,"blue
+
+$ aura sweep ca_2_lincomb_blend.bp.json --list-axes
+graph.sess.period_minutes:I64            # open
+graph.lc.weights[0]:F64 default=0.5      # bound (re-openable by --axis)
+graph.lc.weights[1]:F64 default=0.3
+graph.lc.weights[2]:F64 default=0.2
+...
+
+# --- inside ca_lab/ --- sweep the arity-unlocked weight AND the period param:
+$ aura sweep ca_2_lincomb_blend.bp.json --real US500 --from 1725148800000 --to 1725580800000 \
+    --axis graph.sess.period_minutes=15,30 --axis 'graph.lc.weights[0]=0.3,0.5' --name ca2_blend
+{"family_id":"caa3508a-0-US500-w0-r0-s0-0", ... 4 members ...}   (exit 0)
+
+$ aura reproduce caa3508a-0-US500-w0-r0-s0-0
+... member graph.lc.weights[0]=0.3, graph.sess.period_minutes=15 ... reproduced: bit-identical
+... (×4)
+reproduced 4/4 members bit-identically
+```
+
+Sweep output in `ca_2_lincomb_blend.sweep.jsonl`. NB: at this gating, the two
+`weights[0]` values yield identical member metrics (the gated blend's sign is
+weight-insensitive here) — a semantic property of the strategy, not the arg
+channel; the params bound and swept correctly.
+
+CostSum arity probe: `ca_2b_costsum_arity.ops.json` → `--unwired` shows
+`cost[i].{cost_in_r,cum_cost_in_r,open_cost_in_r}` (3 slots × 3 fields). Wiring
+CostSum end to end needs the RiskExecutor context (cost nodes take
+`closed/open/entry_price/stop_price`) — no op-script path for that exists in the
+public corpus (see finding SG2).
+
+---
+
+## Example 3 — refusal battery (axis 4: strict-form refusal prose)
+
+Every case: `aura graph build < FIXTURE`, stderr + exit code.
+
+```
+ca_3a_bad_tz         aura: op 1 (add): node sess arg "tz" expects Tz (IANA timezone name, e.g. Europe/Berlin) — got "berlin"        exit 1
+ca_3b_unpadded_time  aura: op 1 (add): node sess arg "open" expects TimeOfDay (local wall-clock HH:MM) — got "9:30"                 exit 1
+ca_3c_zero_count     aura: op 2 (add): node lc arg "arity" expects Count (positive integer count) — got "0"                        exit 1
+ca_3d_garbage_count  aura: op 1 (add): node lc arg "arity" expects Count (positive integer count) — got "three"                    exit 1
+ca_3e_missing_arg    aura: op 1 (add): node sess is missing required arg "tz"                                                       exit 1
+ca_3f_args_on_argless aura: op 1 (add): node a takes no construction args                                                          exit 1
+ca_3g_unknown_arg_key aura: op 1 (add): node sess has no construction arg "region"                                                 exit 1
+ca_3h_partial_args    aura: op 1 (add): node sess is missing required arg "open"                                                    exit 1
+```
+
+Edge-form strictness (ad-hoc, `--unwired`):
+
+```
+Count  arity:  "3"→ok   "03"→refuse  "+3"→refuse  "3.0"→refuse  "1e1"→refuse  "-2"→refuse  " 3"→refuse  "0x3"→refuse
+Time   open:   "09:30"→ok  "00:00"→ok  "23:59"→ok   "24:00"→refuse  "09:60"→refuse  "9:05"→refuse  "09:5"→refuse  "09:30:00"→refuse  "0930"→refuse
+```
+
+Note the padding asymmetry: `open` REQUIRES a zero-padded hour (`09:05`), but
+`arity` REFUSES a leading zero (`03`). See finding SG1.
+
+---
+
+## Example 4 — `ca_4` register → use (axis 5: #317 interplay)
+
+```
+$ aura graph build < ca_4_ny_anchor_pattern.ops.json > ca_4_ny_anchor_pattern.bp.json
+$ head -c 25 ca_4_ny_anchor_pattern.bp.json
+{"format_version":2,"blue
+$ aura graph introspect --content-id --identity-id < ca_4_ny_anchor_pattern.ops.json
+d51132463b2d1780b3ed9b83dc9f9a229a9d6b93fce3e15c7c0572970e2e4564
+863c89ddeaa2dfe7d79c7e55944263145399c67397a27c0955bdd768cc6ed72e
+
+# --- inside ca_lab/ ---
+$ aura graph register .../ca_4_ny_anchor_pattern.bp.json --name ny_anchor
+registered blueprint d51132463b2d... (.../runs/blueprints/d51132463b2d....json)
+label "ny_anchor" -> d51132463b2d...
+
+$ aura graph introspect --registered
+ny_anchor  d51132463b2d  NY cash-open session anchor: bars elapsed since the 09:30 America/New_York open
+
+$ aura graph build < ca_4_consumer.ops.json > consumer.bp.json
+# stderr: aura: note: use "anchor": ny_anchor -> d51132463b2d...
+$ head -c 25 consumer.bp.json
+{"format_version":2,"blue          # v2 propagates THROUGH the splice
+$ aura graph introspect --content-id --identity-id < ca_4_consumer.ops.json
+985991f62cc6b92895018312c5ea86e493ef1c09dd53cf6e0813551baa97b671
+bbe7060f4136255e594e1b01242ae80c3f5decfc543f23198d66adff6ce52a7b
+
+$ aura run consumer.bp.json --real US500 --from 1725148800000 --to 1725580800000
+{"manifest":{... "topology_hash":"985991f6..." (== content id),
+   "defaults":[["graph.anchor.sess.period_minutes",{"I64":15}], ...] ...},
+ "metrics":{... "n_trades":8 ...}}    (exit 0)
+
+# doc gate on the args-bearing composite (doc stripped):
+$ aura graph register ca4_docless.bp.json --name ny_docless
+aura: blueprint: composite `graph` carries no doc — a registered composite
+      describes itself (C29); add a doc line (...) before register       exit 1
+```
+
+Consumer report captured in `ca_4_consumer.run.json`.
+
+---
+
+## Cross-cutting confirmations
+
+```
+# args-free document stays format_version 1 (byte-stability invariant, C18):
+$ echo '[{"op":"source",...},{"op":"add","type":"SMA",...},...]' | aura graph build | head -c 25
+{"format_version":1,"blue
+
+# content id deterministic across builds:
+$ aura graph introspect --content-id < ca_1_ny_session.ops.json   (×2) -> identical
+5b085a5b3f411072e48d4b54717b3d09e88be50b0bd797d345c2ee90baa41c37
+5b085a5b3f411072e48d4b54717b3d09e88be50b0bd797d345c2ee90baa41c37
+```

fieldtests/construction-args/ca_1_ny_session.bp.json

@@ -0,0 +1 @@
+{"format_version":2,"blueprint":{"name":"graph","nodes":[{"primitive":{"type":"Resample","name":"c15","bound":[{"pos":0,"name":"period_minutes","kind":"I64","value":{"I64":15}}]}},{"primitive":{"type":"Sub","name":"body"}},{"primitive":{"type":"Sign","name":"dir"}},{"primitive":{"type":"Session","name":"sess","args":[{"name":"tz","value":"America/New_York"},{"name":"open","value":"09:30"}],"bound":[{"pos":0,"name":"period_minutes","kind":"I64","value":{"I64":15}}]}},{"primitive":{"type":"EqConst","name":"isfirst","bound":[{"pos":0,"name":"target","kind":"I64","value":{"I64":1}}]}},{"primitive":{"type":"When","name":"firstmom"}},{"primitive":{"type":"Bias","name":"bias","bound":[{"pos":0,"name":"scale","kind":"F64","value":{"F64":1.0}}]}}],"edges":[{"from":0,"to":1,"slot":0,"from_field":3},{"from":0,"to":1,"slot":1,"from_field":0},{"from":1,"to":2,"slot":0,"from_field":0},{"from":0,"to":3,"slot":0,"from_field":3},{"from":3,"to":4,"slot":0,"from_field":0},{"from":2,"to":5,"slot":0,"from_field":0},{"from":4,"to":5,"slot":1,"from_field":0},{"from":5,"to":6,"slot":0,"from_field":0}],"input_roles":[{"name":"open","targets":[{"node":0,"slot":0}],"source":"F64"},{"name":"high","targets":[{"node":0,"slot":1}],"source":"F64"},{"name":"low","targets":[{"node":0,"slot":2}],"source":"F64"},{"name":"close","targets":[{"node":0,"slot":3}],"source":"F64"}],"output":[{"node":6,"field":0,"name":"bias"}]}}

fieldtests/construction-args/ca_1_ny_session.ops.json

@@ -0,0 +1,28 @@
+[
+  {"op": "source", "role": "open", "kind": "F64"},
+  {"op": "source", "role": "high", "kind": "F64"},
+  {"op": "source", "role": "low", "kind": "F64"},
+  {"op": "source", "role": "close", "kind": "F64"},
+  {"op": "add", "type": "Resample", "name": "c15", "bind": {"period_minutes": {"I64": 15}}},
+  {"op": "feed", "role": "open", "into": ["c15.open"]},
+  {"op": "feed", "role": "high", "into": ["c15.high"]},
+  {"op": "feed", "role": "low", "into": ["c15.low"]},
+  {"op": "feed", "role": "close", "into": ["c15.close"]},
+  {"op": "add", "type": "Sub", "name": "body"},
+  {"op": "connect", "from": "c15.close", "to": "body.lhs"},
+  {"op": "connect", "from": "c15.open", "to": "body.rhs"},
+  {"op": "add", "type": "Sign", "name": "dir"},
+  {"op": "connect", "from": "body.value", "to": "dir.value"},
+  {"op": "add", "type": "Session", "name": "sess",
+   "args": {"tz": "America/New_York", "open": "09:30"},
+   "bind": {"period_minutes": {"I64": 15}}},
+  {"op": "connect", "from": "c15.close", "to": "sess.trigger"},
+  {"op": "add", "type": "EqConst", "name": "isfirst", "bind": {"target": {"I64": 1}}},
+  {"op": "connect", "from": "sess.bars_since_open", "to": "isfirst.value"},
+  {"op": "add", "type": "When", "name": "firstmom"},
+  {"op": "connect", "from": "dir.value", "to": "firstmom.value"},
+  {"op": "connect", "from": "isfirst.value", "to": "firstmom.gate"},
+  {"op": "add", "type": "Bias", "name": "bias", "bind": {"scale": {"F64": 1.0}}},
+  {"op": "connect", "from": "firstmom.value", "to": "bias.signal"},
+  {"op": "expose", "from": "bias.bias", "as": "bias"}
+]

fieldtests/construction-args/ca_1_ny_session.run.json

@@ -0,0 +1,65 @@
+{
+    "manifest": {
+        "commit": "6ca359ae00e8e7921f08557be383bc2d0a2ce199",
+        "params": [],
+        "defaults": [
+            [
+                "graph.c15.period_minutes",
+                {
+                    "I64": 15
+                }
+            ],
+            [
+                "graph.sess.period_minutes",
+                {
+                    "I64": 15
+                }
+            ],
+            [
+                "graph.isfirst.target",
+                {
+                    "I64": 1
+                }
+            ],
+            [
+                "graph.bias.scale",
+                {
+                    "F64": 1.0
+                }
+            ]
+        ],
+        "window": [
+            1725235200000000000,
+            1725580800000000000
+        ],
+        "seed": 0,
+        "broker": "sim-optimal+risk-executor(pip_size=1)",
+        "topology_hash": "5b085a5b3f411072e48d4b54717b3d09e88be50b0bd797d345c2ee90baa41c37",
+        "project": {
+            "commit": "d7e3a8f39881cc8eba42a906fa846676bfbb1010"
+        }
+    },
+    "metrics": {
+        "total_pips": 8.700000000000728,
+        "max_drawdown": 77.0,
+        "bias_sign_flips": 2,
+        "r": {
+            "expectancy_r": 0.7853745294474523,
+            "n_trades": 18,
+            "win_rate": 0.1111111111111111,
+            "avg_win_r": 17.115118267387366,
+            "avg_loss_r": -1.2558434377950367,
+            "profit_factor": 1.7035481645543986,
+            "max_r_drawdown": 16.041140339815094,
+            "n_open_at_end": 1,
+            "sqn": 0.4343599983483773,
+            "sqn_normalized": 0.4343599983483773,
+            "net_expectancy_r": 0.7853745294474523,
+            "conviction_terciles_r": [
+                -1.3650686711197901,
+                -1.2338202185443914,
+                4.955012478006539
+            ]
+        }
+    }
+}

fieldtests/construction-args/ca_2_lincomb_blend.bp.json

@@ -0,0 +1 @@
+{"format_version":2,"blueprint":{"name":"graph","doc":"NY-session-gated blend of three SMA spreads via a LinComb(arity 3); sweepable session period","nodes":[{"primitive":{"type":"SMA","name":"a","bound":[{"pos":0,"name":"length","kind":"I64","value":{"I64":2}}]}},{"primitive":{"type":"SMA","name":"b","bound":[{"pos":0,"name":"length","kind":"I64","value":{"I64":5}}]}},{"primitive":{"type":"SMA","name":"c","bound":[{"pos":0,"name":"length","kind":"I64","value":{"I64":10}}]}},{"primitive":{"type":"Sub","name":"sA"}},{"primitive":{"type":"Sub","name":"sB"}},{"primitive":{"type":"Sub","name":"sC"}},{"primitive":{"type":"LinComb","name":"lc","args":[{"name":"arity","value":"3"}],"bound":[{"pos":0,"name":"weights[0]","kind":"F64","value":{"F64":0.5}},{"pos":1,"name":"weights[1]","kind":"F64","value":{"F64":0.3}},{"pos":2,"name":"weights[2]","kind":"F64","value":{"F64":0.2}}]}},{"primitive":{"type":"Session","name":"sess","args":[{"name":"tz","value":"America/New_York"},{"name":"open","value":"09:30"}]}},{"primitive":{"type":"EqConst","name":"insession","bound":[{"pos":0,"name":"target","kind":"I64","value":{"I64":1}}]}},{"primitive":{"type":"When","name":"gated"}},{"primitive":{"type":"Bias","name":"bias","bound":[{"pos":0,"name":"scale","kind":"F64","value":{"F64":1.0}}]}}],"edges":[{"from":0,"to":3,"slot":0,"from_field":0},{"from":2,"to":3,"slot":1,"from_field":0},{"from":1,"to":4,"slot":0,"from_field":0},{"from":2,"to":4,"slot":1,"from_field":0},{"from":0,"to":5,"slot":0,"from_field":0},{"from":1,"to":5,"slot":1,"from_field":0},{"from":3,"to":6,"slot":0,"from_field":0},{"from":4,"to":6,"slot":1,"from_field":0},{"from":5,"to":6,"slot":2,"from_field":0},{"from":7,"to":8,"slot":0,"from_field":0},{"from":6,"to":9,"slot":0,"from_field":0},{"from":8,"to":9,"slot":1,"from_field":0},{"from":9,"to":10,"slot":0,"from_field":0}],"input_roles":[{"name":"price","targets":[{"node":0,"slot":0},{"node":1,"slot":0},{"node":2,"slot":0},{"node":7,"slot":0}],"source":"F64"}],"output":[{"node":10,"field":0,"name":"bias"}]}}

fieldtests/construction-args/ca_2_lincomb_blend.ops.json

@@ -0,0 +1,33 @@
+[
+  {"op": "doc", "text": "NY-session-gated blend of three SMA spreads via a LinComb(arity 3); sweepable session period"},
+  {"op": "source", "role": "price", "kind": "F64"},
+  {"op": "add", "type": "SMA", "name": "a", "bind": {"length": {"I64": 2}}},
+  {"op": "add", "type": "SMA", "name": "b", "bind": {"length": {"I64": 5}}},
+  {"op": "add", "type": "SMA", "name": "c", "bind": {"length": {"I64": 10}}},
+  {"op": "feed", "role": "price", "into": ["a.series", "b.series", "c.series"]},
+  {"op": "add", "type": "Sub", "name": "sA"},
+  {"op": "connect", "from": "a.value", "to": "sA.lhs"},
+  {"op": "connect", "from": "c.value", "to": "sA.rhs"},
+  {"op": "add", "type": "Sub", "name": "sB"},
+  {"op": "connect", "from": "b.value", "to": "sB.lhs"},
+  {"op": "connect", "from": "c.value", "to": "sB.rhs"},
+  {"op": "add", "type": "Sub", "name": "sC"},
+  {"op": "connect", "from": "a.value", "to": "sC.lhs"},
+  {"op": "connect", "from": "b.value", "to": "sC.rhs"},
+  {"op": "add", "type": "LinComb", "name": "lc", "args": {"arity": "3"},
+   "bind": {"weights[0]": {"F64": 0.5}, "weights[1]": {"F64": 0.3}, "weights[2]": {"F64": 0.2}}},
+  {"op": "connect", "from": "sA.value", "to": "lc.term[0]"},
+  {"op": "connect", "from": "sB.value", "to": "lc.term[1]"},
+  {"op": "connect", "from": "sC.value", "to": "lc.term[2]"},
+  {"op": "add", "type": "Session", "name": "sess",
+   "args": {"tz": "America/New_York", "open": "09:30"}},
+  {"op": "feed", "role": "price", "into": ["sess.trigger"]},
+  {"op": "add", "type": "EqConst", "name": "insession", "bind": {"target": {"I64": 1}}},
+  {"op": "connect", "from": "sess.bars_since_open", "to": "insession.value"},
+  {"op": "add", "type": "When", "name": "gated"},
+  {"op": "connect", "from": "lc.value", "to": "gated.value"},
+  {"op": "connect", "from": "insession.value", "to": "gated.gate"},
+  {"op": "add", "type": "Bias", "name": "bias", "bind": {"scale": {"F64": 1.0}}},
+  {"op": "connect", "from": "gated.value", "to": "bias.signal"},
+  {"op": "expose", "from": "bias.bias", "as": "bias"}
+]

fieldtests/construction-args/ca_2_lincomb_blend.sweep.jsonl

@@ -0,0 +1,4 @@
+{"family_id":"a457bcb1-0-US500-w0-r0-s0-0","report":{"manifest":{"commit":"6ca359ae00e8e7921f08557be383bc2d0a2ce199","params":[["graph.lc.weights[0]",{"F64":0.3}],["graph.sess.period_minutes",{"I64":15}],["stop_length",{"I64":3}],["stop_k",{"F64":2.0}]],"defaults":[["graph.a.length",{"I64":2}],["graph.b.length",{"I64":5}],["graph.c.length",{"I64":10}],["graph.lc.weights[1]",{"F64":0.3}],["graph.lc.weights[2]",{"F64":0.2}],["graph.insession.target",{"I64":1}],["graph.bias.scale",{"F64":1.0}]],"window":[1725235200000000000,1725580800000000000],"seed":0,"broker":"sim-optimal+risk-executor(pip_size=1)","instrument":"US500","topology_hash":"ef8e0a4eb23bda78ae3914bb3bcc742314750827498e841fb2a2a7f9aea4c864","project":{"commit":"d7e3a8f39881cc8eba42a906fa846676bfbb1010"}},"metrics":{"total_pips":-96.06109999999117,"max_drawdown":137.94459999999816,"bias_sign_flips":10,"r":{"expectancy_r":-0.709681826087026,"n_trades":37,"win_rate":0.13513513513513514,"avg_win_r":3.454890860540305,"avg_loss_r":-1.3603963083725465,"profit_factor":0.3968157614344175,"max_r_drawdown":28.676655116297415,"n_open_at_end":1,"sqn":-1.7501753655158518,"sqn_normalized":-1.7501753655158518,"net_expectancy_r":-0.709681826087026,"conviction_terciles_r":[0.010138828240044861,-1.4112281254600723,-0.7265504614292024]}}}}
+{"family_id":"a457bcb1-0-US500-w0-r0-s0-0","report":{"manifest":{"commit":"6ca359ae00e8e7921f08557be383bc2d0a2ce199","params":[["graph.lc.weights[0]",{"F64":0.3}],["graph.sess.period_minutes",{"I64":30}],["stop_length",{"I64":3}],["stop_k",{"F64":2.0}]],"defaults":[["graph.a.length",{"I64":2}],["graph.b.length",{"I64":5}],["graph.c.length",{"I64":10}],["graph.lc.weights[1]",{"F64":0.3}],["graph.lc.weights[2]",{"F64":0.2}],["graph.insession.target",{"I64":1}],["graph.bias.scale",{"F64":1.0}]],"window":[1725235200000000000,1725580800000000000],"seed":0,"broker":"sim-optimal+risk-executor(pip_size=1)","instrument":"US500","topology_hash":"ef8e0a4eb23bda78ae3914bb3bcc742314750827498e841fb2a2a7f9aea4c864","project":{"commit":"d7e3a8f39881cc8eba42a906fa846676bfbb1010"}},"metrics":{"total_pips":-53.55989999998029,"max_drawdown":120.4151999999832,"bias_sign_flips":18,"r":{"expectancy_r":-0.05940492516372425,"n_trades":34,"win_rate":0.23529411764705882,"avg_win_r":3.3843995517241234,"avg_loss_r":-1.1190370718984466,"profit_factor":0.9305801696597508,"max_r_drawdown":18.95335695076066,"n_open_at_end":1,"sqn":-0.13880221854288846,"sqn_normalized":-0.13880221854288846,"net_expectancy_r":-0.05940492516372425,"conviction_terciles_r":[0.92760843970395,-1.1133959931000275,0.001991302649185419]}}}}
+{"family_id":"a457bcb1-0-US500-w0-r0-s0-0","report":{"manifest":{"commit":"6ca359ae00e8e7921f08557be383bc2d0a2ce199","params":[["graph.lc.weights[0]",{"F64":0.5}],["graph.sess.period_minutes",{"I64":15}],["stop_length",{"I64":3}],["stop_k",{"F64":2.0}]],"defaults":[["graph.a.length",{"I64":2}],["graph.b.length",{"I64":5}],["graph.c.length",{"I64":10}],["graph.lc.weights[1]",{"F64":0.3}],["graph.lc.weights[2]",{"F64":0.2}],["graph.insession.target",{"I64":1}],["graph.bias.scale",{"F64":1.0}]],"window":[1725235200000000000,1725580800000000000],"seed":0,"broker":"sim-optimal+risk-executor(pip_size=1)","instrument":"US500","topology_hash":"ef8e0a4eb23bda78ae3914bb3bcc742314750827498e841fb2a2a7f9aea4c864","project":{"commit":"d7e3a8f39881cc8eba42a906fa846676bfbb1010"}},"metrics":{"total_pips":-90.72209999998813,"max_drawdown":138.7875999999975,"bias_sign_flips":10,"r":{"expectancy_r":-0.709681826087026,"n_trades":37,"win_rate":0.13513513513513514,"avg_win_r":3.454890860540305,"avg_loss_r":-1.3603963083725465,"profit_factor":0.3968157614344175,"max_r_drawdown":28.676655116297415,"n_open_at_end":1,"sqn":-1.7501753655158518,"sqn_normalized":-1.7501753655158518,"net_expectancy_r":-0.709681826087026,"conviction_terciles_r":[0.010138828240044861,-1.294302553607114,-0.8344817585242409]}}}}
+{"family_id":"a457bcb1-0-US500-w0-r0-s0-0","report":{"manifest":{"commit":"6ca359ae00e8e7921f08557be383bc2d0a2ce199","params":[["graph.lc.weights[0]",{"F64":0.5}],["graph.sess.period_minutes",{"I64":30}],["stop_length",{"I64":3}],["stop_k",{"F64":2.0}]],"defaults":[["graph.a.length",{"I64":2}],["graph.b.length",{"I64":5}],["graph.c.length",{"I64":10}],["graph.lc.weights[1]",{"F64":0.3}],["graph.lc.weights[2]",{"F64":0.2}],["graph.insession.target",{"I64":1}],["graph.bias.scale",{"F64":1.0}]],"window":[1725235200000000000,1725580800000000000],"seed":0,"broker":"sim-optimal+risk-executor(pip_size=1)","instrument":"US500","topology_hash":"ef8e0a4eb23bda78ae3914bb3bcc742314750827498e841fb2a2a7f9aea4c864","project":{"commit":"d7e3a8f39881cc8eba42a906fa846676bfbb1010"}},"metrics":{"total_pips":-49.96429999999597,"max_drawdown":125.2664000000041,"bias_sign_flips":18,"r":{"expectancy_r":-0.05940492516372425,"n_trades":34,"win_rate":0.23529411764705882,"avg_win_r":3.3843995517241234,"avg_loss_r":-1.1190370718984466,"profit_factor":0.9305801696597508,"max_r_drawdown":18.95335695076066,"n_open_at_end":1,"sqn":-0.13880221854288846,"sqn_normalized":-0.13880221854288846,"net_expectancy_r":-0.05940492516372425,"conviction_terciles_r":[0.92760843970395,-0.9291244696270301,-0.16692426053439502]}}}}

fieldtests/construction-args/ca_2b_costsum_arity.ops.json

@@ -0,0 +1,3 @@
+[
+  {"op": "add", "type": "CostSum", "name": "cs", "args": {"n_costs": "3"}}
+]

fieldtests/construction-args/ca_3a_bad_tz.ops.json

@@ -0,0 +1,8 @@
+[
+  {"op": "source", "role": "price", "kind": "F64"},
+  {"op": "add", "type": "Session", "name": "sess",
+   "args": {"tz": "berlin", "open": "09:30"},
+   "bind": {"period_minutes": {"I64": 15}}},
+  {"op": "feed", "role": "price", "into": ["sess.trigger"]},
+  {"op": "expose", "from": "sess.bars_since_open", "as": "bars"}
+]

fieldtests/construction-args/ca_3b_unpadded_time.ops.json

@@ -0,0 +1,8 @@
+[
+  {"op": "source", "role": "price", "kind": "F64"},
+  {"op": "add", "type": "Session", "name": "sess",
+   "args": {"tz": "America/New_York", "open": "9:30"},
+   "bind": {"period_minutes": {"I64": 15}}},
+  {"op": "feed", "role": "price", "into": ["sess.trigger"]},
+  {"op": "expose", "from": "sess.bars_since_open", "as": "bars"}
+]

fieldtests/construction-args/ca_3c_zero_count.ops.json

@@ -0,0 +1,7 @@
+[
+  {"op": "source", "role": "price", "kind": "F64"},
+  {"op": "add", "type": "SMA", "name": "a", "bind": {"length": {"I64": 2}}},
+  {"op": "add", "type": "LinComb", "name": "lc", "args": {"arity": "0"}},
+  {"op": "feed", "role": "price", "into": ["a.series"]},
+  {"op": "expose", "from": "lc.value", "as": "out"}
+]

fieldtests/construction-args/ca_3d_garbage_count.ops.json

@@ -0,0 +1,5 @@
+[
+  {"op": "source", "role": "price", "kind": "F64"},
+  {"op": "add", "type": "LinComb", "name": "lc", "args": {"arity": "three"}},
+  {"op": "expose", "from": "lc.value", "as": "out"}
+]

fieldtests/construction-args/ca_3e_missing_arg.ops.json

@@ -0,0 +1,7 @@
+[
+  {"op": "source", "role": "price", "kind": "F64"},
+  {"op": "add", "type": "Session", "name": "sess",
+   "bind": {"period_minutes": {"I64": 15}}},
+  {"op": "feed", "role": "price", "into": ["sess.trigger"]},
+  {"op": "expose", "from": "sess.bars_since_open", "as": "bars"}
+]

fieldtests/construction-args/ca_3f_args_on_argless.ops.json

@@ -0,0 +1,8 @@
+[
+  {"op": "source", "role": "price", "kind": "F64"},
+  {"op": "add", "type": "SMA", "name": "a",
+   "args": {"window": "3"},
+   "bind": {"length": {"I64": 2}}},
+  {"op": "feed", "role": "price", "into": ["a.series"]},
+  {"op": "expose", "from": "a.value", "as": "out"}
+]

fieldtests/construction-args/ca_3g_unknown_arg_key.ops.json

@@ -0,0 +1,8 @@
+[
+  {"op": "source", "role": "price", "kind": "F64"},
+  {"op": "add", "type": "Session", "name": "sess",
+   "args": {"tz": "America/New_York", "open": "09:30", "region": "east"},
+   "bind": {"period_minutes": {"I64": 15}}},
+  {"op": "feed", "role": "price", "into": ["sess.trigger"]},
+  {"op": "expose", "from": "sess.bars_since_open", "as": "bars"}
+]

fieldtests/construction-args/ca_3h_partial_args.ops.json

@@ -0,0 +1,8 @@
+[
+  {"op": "source", "role": "price", "kind": "F64"},
+  {"op": "add", "type": "Session", "name": "sess",
+   "args": {"tz": "America/New_York"},
+   "bind": {"period_minutes": {"I64": 15}}},
+  {"op": "feed", "role": "price", "into": ["sess.trigger"]},
+  {"op": "expose", "from": "sess.bars_since_open", "as": "bars"}
+]

fieldtests/construction-args/ca_4_consumer.bp.json

@@ -0,0 +1 @@
+{"format_version":2,"blueprint":{"name":"graph","doc":"consumer: splice the NY session anchor by name, go long 1.0 on the first session bar, flat otherwise","nodes":[{"composite":{"name":"anchor","doc":"NY cash-open session anchor: bars elapsed since the 09:30 America/New_York open","nodes":[{"primitive":{"type":"Session","name":"sess","args":[{"name":"tz","value":"America/New_York"},{"name":"open","value":"09:30"}],"bound":[{"pos":0,"name":"period_minutes","kind":"I64","value":{"I64":15}}]}}],"input_roles":[{"name":"price","targets":[{"node":0,"slot":0}]}],"output":[{"node":0,"field":0,"name":"bars"}]}},{"primitive":{"type":"EqConst","name":"isfirst","bound":[{"pos":0,"name":"target","kind":"I64","value":{"I64":1}}]}},{"primitive":{"type":"Const","name":"one","bound":[{"pos":0,"name":"value","kind":"F64","value":{"F64":1.0}}]}},{"primitive":{"type":"Const","name":"zero","bound":[{"pos":0,"name":"value","kind":"F64","value":{"F64":0.0}}]}},{"primitive":{"type":"Select","name":"sel"}},{"primitive":{"type":"Bias","name":"bias","bound":[{"pos":0,"name":"scale","kind":"F64","value":{"F64":1.0}}]}}],"edges":[{"from":0,"to":1,"slot":0,"from_field":0},{"from":1,"to":4,"slot":0,"from_field":0},{"from":2,"to":4,"slot":1,"from_field":0},{"from":3,"to":4,"slot":2,"from_field":0},{"from":4,"to":5,"slot":0,"from_field":0}],"input_roles":[{"name":"price","targets":[{"node":0,"slot":0},{"node":2,"slot":0},{"node":3,"slot":0}],"source":"F64"}],"output":[{"node":5,"field":0,"name":"bias"}]}}

fieldtests/construction-args/ca_4_consumer.ops.json

@@ -0,0 +1,19 @@
+[
+  {"op": "doc", "text": "consumer: splice the NY session anchor by name, go long 1.0 on the first session bar, flat otherwise"},
+  {"op": "source", "role": "price", "kind": "F64"},
+  {"op": "use", "ref": {"name": "ny_anchor"}, "name": "anchor"},
+  {"op": "feed", "role": "price", "into": ["anchor.price"]},
+  {"op": "add", "type": "EqConst", "name": "isfirst", "bind": {"target": {"I64": 1}}},
+  {"op": "connect", "from": "anchor.bars", "to": "isfirst.value"},
+  {"op": "add", "type": "Const", "name": "one", "bind": {"value": {"F64": 1.0}}},
+  {"op": "feed", "role": "price", "into": ["one.clock"]},
+  {"op": "add", "type": "Const", "name": "zero", "bind": {"value": {"F64": 0.0}}},
+  {"op": "feed", "role": "price", "into": ["zero.clock"]},
+  {"op": "add", "type": "Select", "name": "sel"},
+  {"op": "connect", "from": "isfirst.value", "to": "sel.cond"},
+  {"op": "connect", "from": "one.value", "to": "sel.then"},
+  {"op": "connect", "from": "zero.value", "to": "sel.otherwise"},
+  {"op": "add", "type": "Bias", "name": "bias", "bind": {"scale": {"F64": 1.0}}},
+  {"op": "connect", "from": "sel.value", "to": "bias.signal"},
+  {"op": "expose", "from": "bias.bias", "as": "bias"}
+]

fieldtests/construction-args/ca_4_consumer.run.json

@@ -0,0 +1,71 @@
+{
+    "manifest": {
+        "commit": "6ca359ae00e8e7921f08557be383bc2d0a2ce199",
+        "params": [],
+        "defaults": [
+            [
+                "graph.anchor.sess.period_minutes",
+                {
+                    "I64": 15
+                }
+            ],
+            [
+                "graph.isfirst.target",
+                {
+                    "I64": 1
+                }
+            ],
+            [
+                "graph.one.value",
+                {
+                    "F64": 1.0
+                }
+            ],
+            [
+                "graph.zero.value",
+                {
+                    "F64": 0.0
+                }
+            ],
+            [
+                "graph.bias.scale",
+                {
+                    "F64": 1.0
+                }
+            ]
+        ],
+        "window": [
+            1725235200000000000,
+            1725580800000000000
+        ],
+        "seed": 0,
+        "broker": "sim-optimal+risk-executor(pip_size=1)",
+        "topology_hash": "985991f62cc6b92895018312c5ea86e493ef1c09dd53cf6e0813551baa97b671",
+        "project": {
+            "commit": "d7e3a8f39881cc8eba42a906fa846676bfbb1010"
+        }
+    },
+    "metrics": {
+        "total_pips": -19.5,
+        "max_drawdown": 35.5,
+        "bias_sign_flips": 8,
+        "r": {
+            "expectancy_r": -0.7143093152455215,
+            "n_trades": 8,
+            "win_rate": 0.125,
+            "avg_win_r": 2.704952265814223,
+            "avg_loss_r": -1.2027752553969135,
+            "profit_factor": 0.32127510981397456,
+            "max_r_drawdown": 7.371844351604779,
+            "n_open_at_end": 0,
+            "sqn": -1.3625154866298599,
+            "sqn_normalized": -1.3625154866298599,
+            "net_expectancy_r": -0.7143093152455215,
+            "conviction_terciles_r": [
+                -1.0191864862283455,
+                -1.1307276003565727,
+                -0.09463958281258789
+            ]
+        }
+    }
+}

fieldtests/construction-args/ca_4_ny_anchor_pattern.bp.json

@@ -0,0 +1 @@
+{"format_version":2,"blueprint":{"name":"graph","doc":"NY cash-open session anchor: bars elapsed since the 09:30 America/New_York open","nodes":[{"primitive":{"type":"Session","name":"sess","args":[{"name":"tz","value":"America/New_York"},{"name":"open","value":"09:30"}],"bound":[{"pos":0,"name":"period_minutes","kind":"I64","value":{"I64":15}}]}}],"input_roles":[{"name":"price","targets":[{"node":0,"slot":0}]}],"output":[{"node":0,"field":0,"name":"bars"}]}}

fieldtests/construction-args/ca_4_ny_anchor_pattern.ops.json

@@ -0,0 +1,9 @@
+[
+  {"op": "doc", "text": "NY cash-open session anchor: bars elapsed since the 09:30 America/New_York open"},
+  {"op": "input", "role": "price"},
+  {"op": "add", "type": "Session", "name": "sess",
+   "args": {"tz": "America/New_York", "open": "09:30"},
+   "bind": {"period_minutes": {"I64": 15}}},
+  {"op": "feed", "role": "price", "into": ["sess.trigger"]},
+  {"op": "expose", "from": "sess.bars_since_open", "as": "bars"}
+]

fieldtests/cycle-328-axis-namespace/TRANSCRIPT.md

@@ -0,0 +1,109 @@
+# Fieldtest transcript — cycle #328 (axis-namespace reconciliation)
+
+Per-cycle field test of the one-raw-namespace axis surface: the raw
+`<node>.<param>` form as the only user-facing sweep-axis name across every
+surface (discovery, intake on all three verbs, run manifests, campaign
+documents), with the wrapped `<blueprint>.<node>.<param>` form retired behind
+translation refusals.
+
+Binary: `target/release/aura`, built from HEAD `4474814` via
+`cargo build --release -p aura-cli` (Finished in 5.45s — HEAD builds clean).
+Scratch project `aura new ax_lab` in `/tmp/axwork/ax_lab`; real data from the
+built-in archive (US500). Public interface only (README, authoring-guide,
+glossary, design ledger, `aura … --help`) — no crate source read.
+
+Base blueprint `cycle328_crossover`: an SMA-crossover → bias signal with a
+deliberate mix — `fast.length` **open**, `slow.length` **bound** (default=6),
+`bias.scale` **bound** (default=0.5) — so both discovery line shapes and the
+bound-override contract are exercised. Content id
+`f5fdf729d0333f0286c19d57143fb7933137f27a6128e72489c508096c7a2240`.
+
+---
+
+## Example 1 — discovery-surface identity (`--params` vs `--list-axes`)
+
+```
+$ aura graph introspect --params cycle328_crossover.bp.json
+fast.length:I64
+slow.length:I64 default=6
+bias.scale:F64 default=0.5
+$ aura sweep cycle328_crossover.bp.json --list-axes
+fast.length:I64
+slow.length:I64 default=6
+bias.scale:F64 default=0.5
+$ diff params.txt listaxes.txt      # → IDENTICAL (no diff)
+```
+
+Byte-identical, raw `<node>.<param>` form, bound params carrying `default=<v>`.
+`--params` discovers bound params too. (Finding W1.)
+
+## Example 2 — document-first loop (paste verbatim, incl. bound-override)
+
+Axes pasted verbatim from `--params` into a hand-written campaign document
+(`cycle328_2_campaign.json`), including two bound-override axes (`slow.length`,
+`bias.scale` — bound defaults re-opened by name, #246 coincidence contract):
+
+```
+$ aura campaign validate cycle328_2_campaign.json      # inside project, refs registered
+campaign document valid (intrinsic): 1 strategy(ies), 3 axes (4 points), 1 instrument(s), 1 window(s), 1 regime(s) (default) — 1 cell(s)
+campaign document valid (referential): all references resolve, axes are in the param space
+campaign document valid (executable): pipeline shape and static guards pass
+$ aura campaign run cycle328_2_campaign.json           # exit 0
+aura: campaign run 0 recorded: 1 cells
+# manifest.params (raw): fast.length, slow.length, bias.scale (+ stop knobs)
+```
+
+All three tiers pass; the bound-override axes validate; the run manifest records
+raw names. (Finding W2.)
+
+## Example 3 — translation seams (wrapped form on every intake)
+
+```
+$ aura sweep      cycle328_crossover.bp.json --axis graph.fast.length=2,4 ...   (exit 2)
+$ aura sweep      cycle328_crossover.bp.json --real US500 --axis graph.fast.length=... (exit 2)
+$ aura walkforward cycle328_crossover.bp.json --real US500 --axis graph.fast.length=... (exit 2)
+aura: axis "graph.fast.length": axis names are raw node.param paths — use "fast.length" (the wrapped --list-axes form was retired, #328)
+
+$ aura campaign validate cycle328_3d_wrapped_campaign.json                      (exit 1)
+aura: campaign references do not resolve:
+  strategy f5fdf729d0333f0286c19d57143fb7933137f27a6128e72489c508096c7a2240: axis "graph.fast.length" is not in the param space; axis names are raw node.param paths — did you mean "fast.length"?
+```
+
+All three verbs refuse identically, naming the raw candidate; campaign validate
+appends a did-you-mean. Note the campaign-validate strategy identifier is the
+FULL 64-hex content id, where the authoring guide's transcript shows a 4-hex
+`strategy 9f3a:` placeholder (Finding SG1). Edge probes:
+
+```
+$ aura sweep ... --axis fastt.length=2,4                # typo
+aura: axis fastt.length: names no param of this blueprint (open or bound) — see `aura sweep <bp> --list-axes`
+$ aura sweep ... --axis graph.fast.bogus=1              # wrapped, tail not a param
+aura: axis graph.fast.bogus: names no param of this blueprint (open or bound) — see `aura sweep <bp> --list-axes`
+$ aura sweep ... --axis project.graph.fast.length=2     # two leading segments (> one)
+aura: axis project.graph.fast.length: names no param of this blueprint (open or bound) — see `aura sweep <bp> --list-axes`
+```
+
+Typos and >1-segment wrappings fall to a clean generic error — consistent with
+the documented "one leading segment strips to a hit" contract. (Finding W3.)
+
+## Example 4 — manifest raw names + reproduce
+
+```
+$ aura sweep cycle328_crossover.bp.json --axis fast.length=2,4 --axis slow.length=8,16 --name cycle328-sweep-bo
+# each member manifest:
+#   params:   [["fast.length",..],["slow.length",..],["stop_length",..],["stop_k",..]]   (raw)
+#   defaults: [["bias.scale",{"F64":0.5}]]                                                (raw)
+$ aura reproduce cycle328-sweep-bo-0                                             (exit 0)
+cycle328-sweep-bo-0  member fast.length=2, slow.length=8, stop_length=3, stop_k=2  reproduced: bit-identical
+... reproduced 4/4 members bit-identically
+```
+
+Positive real/walkforward routes also record raw (params AND defaults) and run
+clean (exit 0): `cycle328_6a_sweep_real.*`, `cycle328_6b_walkforward.*`. No
+wrapped name appears on any surface. (Finding W4.)
+
+---
+
+Not exercised: the "old wrapped-name manifests remain reproducible" backward-
+compat claim (no pre-#328 on-disk family is reachable through the public
+interface to a source-blind consumer).

fieldtests/cycle-328-axis-namespace/cycle328_1_listaxes.txt

@@ -0,0 +1,3 @@
+fast.length:I64
+slow.length:I64 default=6
+bias.scale:F64 default=0.5

fieldtests/cycle-328-axis-namespace/cycle328_1_params.txt

@@ -0,0 +1,3 @@
+fast.length:I64
+slow.length:I64 default=6
+bias.scale:F64 default=0.5

fieldtests/cycle-328-axis-namespace/cycle328_2_campaign.json

@@ -0,0 +1,22 @@
+{
+  "format_version": 1,
+  "kind": "campaign",
+  "name": "cycle328-doc-first-boundoverride",
+  "seed": 7,
+  "data": {
+    "instruments": ["US500"],
+    "windows": [ { "from_ms": 1725148800000, "to_ms": 1725580800000 } ]
+  },
+  "strategies": [
+    {
+      "ref": { "content_id": "f5fdf729d0333f0286c19d57143fb7933137f27a6128e72489c508096c7a2240" },
+      "axes": {
+        "fast.length": { "kind": "I64", "values": [2, 4] },
+        "slow.length": { "kind": "I64", "values": [8, 16] },
+        "bias.scale": { "kind": "F64", "values": [0.5] }
+      }
+    }
+  ],
+  "process": { "ref": { "content_id": "f14023a1fef5640311163690f1140532412ea5e1d1cbb93e293e63fcf0bf2bf9" } },
+  "presentation": { "persist_taps": [], "emit": ["family_table"] }
+}

fieldtests/cycle-328-axis-namespace/cycle328_2_proc.json

@@ -0,0 +1 @@
+{"format_version":1,"kind":"process","name":"ax-sweep-select","description":"Sweep the grid and select the argmax-SQN cell.","pipeline":[{"block":"std::sweep","metric":"sqn","select":"argmax"}]}

fieldtests/cycle-328-axis-namespace/cycle328_2_run.err

@@ -0,0 +1 @@
+aura: campaign run 0 recorded: 1 cells

fieldtests/cycle-328-axis-namespace/cycle328_2_run.json

@@ -0,0 +1,5 @@
+{"family_id":"844fe329-0-US500-w0-r0-s0-0","report":{"manifest":{"commit":"4474814fa79e227cd2d93e34a6982b49f31ba846","params":[["fast.length",{"I64":2}],["slow.length",{"I64":8}],["bias.scale",{"F64":0.5}],["stop_length",{"I64":3}],["stop_k",{"F64":2.0}]],"defaults":[],"window":[1725148800000000000,1725580800000000000],"seed":0,"broker":"sim-optimal+risk-executor(pip_size=1)","instrument":"US500","topology_hash":"f5fdf729d0333f0286c19d57143fb7933137f27a6128e72489c508096c7a2240","project":{"commit":"6bb76063046d41062b68fbde79950b9d06fbd41d"}},"metrics":{"total_pips":46.422499999968466,"max_drawdown":125.89999999998915,"bias_sign_flips":861,"r":{"expectancy_r":0.052960279961470944,"n_trades":846,"win_rate":0.31796690307328607,"avg_win_r":1.8016249253621428,"avg_loss_r":-0.7622750573223781,"profit_factor":1.1018669053593053,"max_r_drawdown":29.11884107504975,"n_open_at_end":1,"sqn":0.8388429079176243,"sqn_normalized":0.2884001324999155,"net_expectancy_r":0.052960279961470944,"conviction_terciles_r":[-0.05618014716431794,0.13546662237309962,0.07959436467563116]}}}}
+{"family_id":"844fe329-0-US500-w0-r0-s0-0","report":{"manifest":{"commit":"4474814fa79e227cd2d93e34a6982b49f31ba846","params":[["fast.length",{"I64":2}],["slow.length",{"I64":16}],["bias.scale",{"F64":0.5}],["stop_length",{"I64":3}],["stop_k",{"F64":2.0}]],"defaults":[],"window":[1725148800000000000,1725580800000000000],"seed":0,"broker":"sim-optimal+risk-executor(pip_size=1)","instrument":"US500","topology_hash":"f5fdf729d0333f0286c19d57143fb7933137f27a6128e72489c508096c7a2240","project":{"commit":"6bb76063046d41062b68fbde79950b9d06fbd41d"}},"metrics":{"total_pips":23.387499999972977,"max_drawdown":113.9349999999979,"bias_sign_flips":521,"r":{"expectancy_r":0.09527242267306019,"n_trades":529,"win_rate":0.3005671077504726,"avg_win_r":2.0866957092558716,"avg_loss_r":-0.7605013680476617,"profit_factor":1.179110545808399,"max_r_drawdown":26.058017560225167,"n_open_at_end":1,"sqn":1.126033935020108,"sqn_normalized":0.4895799717478731,"net_expectancy_r":0.09527242267306019,"conviction_terciles_r":[-0.07002826150651001,0.25569891492505703,0.10011907679313316]}}}}
+{"family_id":"844fe329-0-US500-w0-r0-s0-0","report":{"manifest":{"commit":"4474814fa79e227cd2d93e34a6982b49f31ba846","params":[["fast.length",{"I64":4}],["slow.length",{"I64":8}],["bias.scale",{"F64":0.5}],["stop_length",{"I64":3}],["stop_k",{"F64":2.0}]],"defaults":[],"window":[1725148800000000000,1725580800000000000],"seed":0,"broker":"sim-optimal+risk-executor(pip_size=1)","instrument":"US500","topology_hash":"f5fdf729d0333f0286c19d57143fb7933137f27a6128e72489c508096c7a2240","project":{"commit":"6bb76063046d41062b68fbde79950b9d06fbd41d"}},"metrics":{"total_pips":80.28249999994746,"max_drawdown":87.96499999997366,"bias_sign_flips":780,"r":{"expectancy_r":0.13213069018419635,"n_trades":821,"win_rate":0.3617539585870889,"avg_win_r":1.848016846738723,"avg_loss_r":-0.8404231046568231,"profit_factor":1.2463301607589143,"max_r_drawdown":28.220480388404972,"n_open_at_end":1,"sqn":1.8795915057542347,"sqn_normalized":0.655981958519425,"net_expectancy_r":0.13213069018419635,"conviction_terciles_r":[0.11958074358694365,0.22575289096933593,0.05101263327150186]}}}}
+{"family_id":"844fe329-0-US500-w0-r0-s0-0","report":{"manifest":{"commit":"4474814fa79e227cd2d93e34a6982b49f31ba846","params":[["fast.length",{"I64":4}],["slow.length",{"I64":16}],["bias.scale",{"F64":0.5}],["stop_length",{"I64":3}],["stop_k",{"F64":2.0}]],"defaults":[],"window":[1725148800000000000,1725580800000000000],"seed":0,"broker":"sim-optimal+risk-executor(pip_size=1)","instrument":"US500","topology_hash":"f5fdf729d0333f0286c19d57143fb7933137f27a6128e72489c508096c7a2240","project":{"commit":"6bb76063046d41062b68fbde79950b9d06fbd41d"}},"metrics":{"total_pips":19.558750000014825,"max_drawdown":85.75000000000286,"bias_sign_flips":399,"r":{"expectancy_r":0.11821373408670934,"n_trades":479,"win_rate":0.31315240083507306,"avg_win_r":2.3901102129922043,"avg_loss_r":-0.9176053292440638,"profit_factor":1.1875649234489034,"max_r_drawdown":28.108663585145585,"n_open_at_end":1,"sqn":1.0959164423645071,"sqn_normalized":0.5007370035157714,"net_expectancy_r":0.11821373408670934,"conviction_terciles_r":[0.2576229784937875,0.13377757213522506,-0.035888040591340105]}}}}
+{"campaign_run":{"campaign":"844fe3290562346f37c756a74f3d76bab9a3c7257341ec8dafec0025ac2f68db","process":"f14023a1fef5640311163690f1140532412ea5e1d1cbb93e293e63fcf0bf2bf9","run":0,"seed":7,"cells":[{"strategy":"f5fdf729d0333f0286c19d57143fb7933137f27a6128e72489c508096c7a2240","instrument":"US500","window_ms":[1725148800000,1725580800000],"stages":[{"block":"std::sweep","family_id":"844fe329-0-US500-w0-r0-s0-0","selection":{"winner_ordinal":2,"params":[["bias.scale",{"F64":0.5}],["fast.length",{"I64":4}],["slow.length",{"I64":8}]],"selection":{"selection_metric":"sqn","n_trials":4,"raw_winner_metric":1.8795915057542347,"mode":"Argmax"}}}],"coverage":{"effective_from_ms":1725235200000,"effective_to_ms":1725580800000}}]}}

fieldtests/cycle-328-axis-namespace/cycle328_2_validate.txt

@@ -0,0 +1,3 @@
+campaign document valid (intrinsic): 1 strategy(ies), 3 axes (4 points), 1 instrument(s), 1 window(s), 1 regime(s) (default) — 1 cell(s)
+campaign document valid (referential): all references resolve, axes are in the param space
+campaign document valid (executable): pipeline shape and static guards pass

fieldtests/cycle-328-axis-namespace/cycle328_3a_sweep_synth.out

@@ -0,0 +1 @@
+aura: axis "graph.fast.length": axis names are raw node.param paths — use "fast.length" (the wrapped --list-axes form was retired, #328)

fieldtests/cycle-328-axis-namespace/cycle328_3b_sweep_real.out

@@ -0,0 +1 @@
+aura: axis "graph.fast.length": axis names are raw node.param paths — use "fast.length" (the wrapped --list-axes form was retired, #328)

fieldtests/cycle-328-axis-namespace/cycle328_3c_walkforward.out

@@ -0,0 +1 @@
+aura: axis "graph.fast.length": axis names are raw node.param paths — use "fast.length" (the wrapped --list-axes form was retired, #328)

fieldtests/cycle-328-axis-namespace/cycle328_3d_validate.out

@@ -0,0 +1,4 @@
+campaign document valid (intrinsic): 1 strategy(ies), 1 axes (2 points), 1 instrument(s), 1 window(s), 1 regime(s) (default) — 1 cell(s)
+aura: campaign references do not resolve:
+  strategy f5fdf729d0333f0286c19d57143fb7933137f27a6128e72489c508096c7a2240: axis "graph.fast.length" is not in the param space; axis names are raw node.param paths — did you mean "fast.length"?
+  strategy f5fdf729d0333f0286c19d57143fb7933137f27a6128e72489c508096c7a2240: open param "fast.length" is bound by no campaign axis

fieldtests/cycle-328-axis-namespace/cycle328_3d_wrapped_campaign.json

@@ -0,0 +1,20 @@
+{
+  "format_version": 1,
+  "kind": "campaign",
+  "name": "cycle328-wrapped-axis-in-doc",
+  "seed": 7,
+  "data": {
+    "instruments": ["US500"],
+    "windows": [ { "from_ms": 1725148800000, "to_ms": 1725580800000 } ]
+  },
+  "strategies": [
+    {
+      "ref": { "content_id": "f5fdf729d0333f0286c19d57143fb7933137f27a6128e72489c508096c7a2240" },
+      "axes": {
+        "graph.fast.length": { "kind": "I64", "values": [2, 4] }
+      }
+    }
+  ],
+  "process": { "ref": { "content_id": "f14023a1fef5640311163690f1140532412ea5e1d1cbb93e293e63fcf0bf2bf9" } },
+  "presentation": { "persist_taps": [], "emit": ["family_table"] }
+}

fieldtests/cycle-328-axis-namespace/cycle328_4_families.txt

@@ -0,0 +1,2 @@
+{"family_id":"844fe329-0-US500-w0-r0-s0-0","kind":"Sweep","members":4}
+{"family_id":"cycle328-sweep-bo-0","kind":"Sweep","members":4}

fieldtests/cycle-328-axis-namespace/cycle328_4_members.txt

@@ -0,0 +1,4 @@
+{"manifest":{"commit":"4474814fa79e227cd2d93e34a6982b49f31ba846","params":[["fast.length",{"I64":2}],["slow.length",{"I64":8}],["stop_length",{"I64":3}],["stop_k",{"F64":2.0}]],"defaults":[["bias.scale",{"F64":0.5}]],"window":[1,18],"seed":0,"broker":"sim-optimal+risk-executor(pip_size=0.0001)","topology_hash":"f5fdf729d0333f0286c19d57143fb7933137f27a6128e72489c508096c7a2240","project":{"commit":"6bb76063046d41062b68fbde79950b9d06fbd41d"}},"metrics":{"total_pips":-0.23484999999997555,"max_drawdown":0.38129999999997777,"bias_sign_flips":2,"r":{"expectancy_r":0.05853072923940165,"n_trades":3,"win_rate":0.3333333333333333,"avg_win_r":1.127161364109783,"avg_loss_r":-0.47578458819578906,"profit_factor":1.18452908319715,"max_r_drawdown":0.2739524763392649,"n_open_at_end":1,"sqn":0.1070277396717771,"sqn_normalized":0.1070277396717771,"net_expectancy_r":0.05853072923940165,"conviction_terciles_r":[-0.2739524763392649,1.127161364109783,-0.6776167000523132]}}}
+{"manifest":{"commit":"4474814fa79e227cd2d93e34a6982b49f31ba846","params":[["fast.length",{"I64":2}],["slow.length",{"I64":16}],["stop_length",{"I64":3}],["stop_k",{"F64":2.0}]],"defaults":[["bias.scale",{"F64":0.5}]],"window":[1,18],"seed":0,"broker":"sim-optimal+risk-executor(pip_size=0.0001)","topology_hash":"f5fdf729d0333f0286c19d57143fb7933137f27a6128e72489c508096c7a2240","project":{"commit":"6bb76063046d41062b68fbde79950b9d06fbd41d"}},"metrics":{"total_pips":0.037062500000010136,"max_drawdown":0.04543749999999568,"bias_sign_flips":0,"r":{"expectancy_r":0.1570020451313814,"n_trades":1,"win_rate":1.0,"avg_win_r":0.1570020451313814,"avg_loss_r":0.0,"profit_factor":0.0,"max_r_drawdown":0.0,"n_open_at_end":1,"sqn":0.0,"sqn_normalized":0.0,"net_expectancy_r":0.1570020451313814,"conviction_terciles_r":[0.0,0.0,0.0]}}}
+{"manifest":{"commit":"4474814fa79e227cd2d93e34a6982b49f31ba846","params":[["fast.length",{"I64":4}],["slow.length",{"I64":8}],["stop_length",{"I64":3}],["stop_k",{"F64":2.0}]],"defaults":[["bias.scale",{"F64":0.5}]],"window":[1,18],"seed":0,"broker":"sim-optimal+risk-executor(pip_size=0.0001)","topology_hash":"f5fdf729d0333f0286c19d57143fb7933137f27a6128e72489c508096c7a2240","project":{"commit":"6bb76063046d41062b68fbde79950b9d06fbd41d"}},"metrics":{"total_pips":-0.5274999999999815,"max_drawdown":0.5609499999999865,"bias_sign_flips":2,"r":{"expectancy_r":-0.6426407768510923,"n_trades":3,"win_rate":0.3333333333333333,"avg_win_r":0.5474739899790243,"avg_loss_r":-1.2376981602661505,"profit_factor":0.22116619687844463,"max_r_drawdown":1.245647494511426,"n_open_at_end":1,"sqn":-1.0799322573025962,"sqn_normalized":-1.0799322573025962,"net_expectancy_r":-0.6426407768510923,"conviction_terciles_r":[-1.2456474945114262,0.5474739899790243,-1.229748826020875]}}}
+{"manifest":{"commit":"4474814fa79e227cd2d93e34a6982b49f31ba846","params":[["fast.length",{"I64":4}],["slow.length",{"I64":16}],["stop_length",{"I64":3}],["stop_k",{"F64":2.0}]],"defaults":[["bias.scale",{"F64":0.5}]],"window":[1,18],"seed":0,"broker":"sim-optimal+risk-executor(pip_size=0.0001)","topology_hash":"f5fdf729d0333f0286c19d57143fb7933137f27a6128e72489c508096c7a2240","project":{"commit":"6bb76063046d41062b68fbde79950b9d06fbd41d"}},"metrics":{"total_pips":0.0076125000000051846,"max_drawdown":0.02868749999999659,"bias_sign_flips":0,"r":{"expectancy_r":0.1570020451313814,"n_trades":1,"win_rate":1.0,"avg_win_r":0.1570020451313814,"avg_loss_r":0.0,"profit_factor":0.0,"max_r_drawdown":0.0,"n_open_at_end":1,"sqn":0.0,"sqn_normalized":0.0,"net_expectancy_r":0.1570020451313814,"conviction_terciles_r":[0.0,0.0,0.0]}}}

fieldtests/cycle-328-axis-namespace/cycle328_4_reproduce.out

@@ -0,0 +1,5 @@
+cycle328-sweep-bo-0  member fast.length=2, slow.length=8, stop_length=3, stop_k=2  reproduced: bit-identical
+cycle328-sweep-bo-0  member fast.length=2, slow.length=16, stop_length=3, stop_k=2  reproduced: bit-identical
+cycle328-sweep-bo-0  member fast.length=4, slow.length=8, stop_length=3, stop_k=2  reproduced: bit-identical
+cycle328-sweep-bo-0  member fast.length=4, slow.length=16, stop_length=3, stop_k=2  reproduced: bit-identical
+reproduced 4/4 members bit-identically

fieldtests/cycle-328-axis-namespace/cycle328_4_sweep.out

@@ -0,0 +1,4 @@
+{"family_id":"cycle328-sweep-bo-0","report":{"manifest":{"commit":"4474814fa79e227cd2d93e34a6982b49f31ba846","params":[["fast.length",{"I64":2}],["slow.length",{"I64":8}],["stop_length",{"I64":3}],["stop_k",{"F64":2.0}]],"defaults":[["bias.scale",{"F64":0.5}]],"window":[1,18],"seed":0,"broker":"sim-optimal+risk-executor(pip_size=0.0001)","topology_hash":"f5fdf729d0333f0286c19d57143fb7933137f27a6128e72489c508096c7a2240","project":{"commit":"6bb76063046d41062b68fbde79950b9d06fbd41d"}},"metrics":{"total_pips":-0.23484999999997555,"max_drawdown":0.38129999999997777,"bias_sign_flips":2,"r":{"expectancy_r":0.05853072923940165,"n_trades":3,"win_rate":0.3333333333333333,"avg_win_r":1.127161364109783,"avg_loss_r":-0.47578458819578906,"profit_factor":1.18452908319715,"max_r_drawdown":0.2739524763392649,"n_open_at_end":1,"sqn":0.1070277396717771,"sqn_normalized":0.1070277396717771,"net_expectancy_r":0.05853072923940165,"conviction_terciles_r":[-0.2739524763392649,1.127161364109783,-0.6776167000523132]}}}}
+{"family_id":"cycle328-sweep-bo-0","report":{"manifest":{"commit":"4474814fa79e227cd2d93e34a6982b49f31ba846","params":[["fast.length",{"I64":2}],["slow.length",{"I64":16}],["stop_length",{"I64":3}],["stop_k",{"F64":2.0}]],"defaults":[["bias.scale",{"F64":0.5}]],"window":[1,18],"seed":0,"broker":"sim-optimal+risk-executor(pip_size=0.0001)","topology_hash":"f5fdf729d0333f0286c19d57143fb7933137f27a6128e72489c508096c7a2240","project":{"commit":"6bb76063046d41062b68fbde79950b9d06fbd41d"}},"metrics":{"total_pips":0.037062500000010136,"max_drawdown":0.04543749999999568,"bias_sign_flips":0,"r":{"expectancy_r":0.1570020451313814,"n_trades":1,"win_rate":1.0,"avg_win_r":0.1570020451313814,"avg_loss_r":0.0,"profit_factor":0.0,"max_r_drawdown":0.0,"n_open_at_end":1,"sqn":0.0,"sqn_normalized":0.0,"net_expectancy_r":0.1570020451313814,"conviction_terciles_r":[0.0,0.0,0.0]}}}}
+{"family_id":"cycle328-sweep-bo-0","report":{"manifest":{"commit":"4474814fa79e227cd2d93e34a6982b49f31ba846","params":[["fast.length",{"I64":4}],["slow.length",{"I64":8}],["stop_length",{"I64":3}],["stop_k",{"F64":2.0}]],"defaults":[["bias.scale",{"F64":0.5}]],"window":[1,18],"seed":0,"broker":"sim-optimal+risk-executor(pip_size=0.0001)","topology_hash":"f5fdf729d0333f0286c19d57143fb7933137f27a6128e72489c508096c7a2240","project":{"commit":"6bb76063046d41062b68fbde79950b9d06fbd41d"}},"metrics":{"total_pips":-0.5274999999999815,"max_drawdown":0.5609499999999865,"bias_sign_flips":2,"r":{"expectancy_r":-0.6426407768510923,"n_trades":3,"win_rate":0.3333333333333333,"avg_win_r":0.5474739899790243,"avg_loss_r":-1.2376981602661505,"profit_factor":0.22116619687844463,"max_r_drawdown":1.245647494511426,"n_open_at_end":1,"sqn":-1.0799322573025962,"sqn_normalized":-1.0799322573025962,"net_expectancy_r":-0.6426407768510923,"conviction_terciles_r":[-1.2456474945114262,0.5474739899790243,-1.229748826020875]}}}}
+{"family_id":"cycle328-sweep-bo-0","report":{"manifest":{"commit":"4474814fa79e227cd2d93e34a6982b49f31ba846","params":[["fast.length",{"I64":4}],["slow.length",{"I64":16}],["stop_length",{"I64":3}],["stop_k",{"F64":2.0}]],"defaults":[["bias.scale",{"F64":0.5}]],"window":[1,18],"seed":0,"broker":"sim-optimal+risk-executor(pip_size=0.0001)","topology_hash":"f5fdf729d0333f0286c19d57143fb7933137f27a6128e72489c508096c7a2240","project":{"commit":"6bb76063046d41062b68fbde79950b9d06fbd41d"}},"metrics":{"total_pips":0.0076125000000051846,"max_drawdown":0.02868749999999659,"bias_sign_flips":0,"r":{"expectancy_r":0.1570020451313814,"n_trades":1,"win_rate":1.0,"avg_win_r":0.1570020451313814,"avg_loss_r":0.0,"profit_factor":0.0,"max_r_drawdown":0.0,"n_open_at_end":1,"sqn":0.0,"sqn_normalized":0.0,"net_expectancy_r":0.1570020451313814,"conviction_terciles_r":[0.0,0.0,0.0]}}}}

fieldtests/cycle-328-axis-namespace/cycle328_5a_typo.out

@@ -0,0 +1 @@
+aura: axis fastt.length: names no param of this blueprint (open or bound) — see `aura sweep <bp> --list-axes`

fieldtests/cycle-328-axis-namespace/cycle328_5b_wrapped_nohit.out

@@ -0,0 +1 @@
+aura: axis graph.fast.bogus: names no param of this blueprint (open or bound) — see `aura sweep <bp> --list-axes`

fieldtests/cycle-328-axis-namespace/cycle328_5c_deep_wrapped.out

@@ -0,0 +1 @@
+aura: axis project.graph.fast.length: names no param of this blueprint (open or bound) — see `aura sweep <bp> --list-axes`

fieldtests/cycle-328-axis-namespace/cycle328_6a_sweep_real.out

@@ -0,0 +1,2 @@
+{"family_id":"1102542f-0-US500-w0-r0-s0-0","report":{"manifest":{"commit":"4474814fa79e227cd2d93e34a6982b49f31ba846","params":[["fast.length",{"I64":2}],["slow.length",{"I64":8}],["stop_length",{"I64":3}],["stop_k",{"F64":2.0}]],"defaults":[["bias.scale",{"F64":0.5}]],"window":[1725235200000000000,1725580800000000000],"seed":0,"broker":"sim-optimal+risk-executor(pip_size=1)","instrument":"US500","topology_hash":"f5fdf729d0333f0286c19d57143fb7933137f27a6128e72489c508096c7a2240","project":{"commit":"6bb76063046d41062b68fbde79950b9d06fbd41d"}},"metrics":{"total_pips":46.422499999968466,"max_drawdown":125.89999999998915,"bias_sign_flips":861,"r":{"expectancy_r":0.052960279961470944,"n_trades":846,"win_rate":0.31796690307328607,"avg_win_r":1.8016249253621428,"avg_loss_r":-0.7622750573223781,"profit_factor":1.1018669053593053,"max_r_drawdown":29.11884107504975,"n_open_at_end":1,"sqn":0.8388429079176243,"sqn_normalized":0.2884001324999155,"net_expectancy_r":0.052960279961470944,"conviction_terciles_r":[-0.05618014716431794,0.13546662237309962,0.07959436467563116]}}}}
+{"family_id":"1102542f-0-US500-w0-r0-s0-0","report":{"manifest":{"commit":"4474814fa79e227cd2d93e34a6982b49f31ba846","params":[["fast.length",{"I64":4}],["slow.length",{"I64":8}],["stop_length",{"I64":3}],["stop_k",{"F64":2.0}]],"defaults":[["bias.scale",{"F64":0.5}]],"window":[1725235200000000000,1725580800000000000],"seed":0,"broker":"sim-optimal+risk-executor(pip_size=1)","instrument":"US500","topology_hash":"f5fdf729d0333f0286c19d57143fb7933137f27a6128e72489c508096c7a2240","project":{"commit":"6bb76063046d41062b68fbde79950b9d06fbd41d"}},"metrics":{"total_pips":80.28249999994746,"max_drawdown":87.96499999997366,"bias_sign_flips":780,"r":{"expectancy_r":0.13213069018419635,"n_trades":821,"win_rate":0.3617539585870889,"avg_win_r":1.848016846738723,"avg_loss_r":-0.8404231046568231,"profit_factor":1.2463301607589143,"max_r_drawdown":28.220480388404972,"n_open_at_end":1,"sqn":1.8795915057542347,"sqn_normalized":0.655981958519425,"net_expectancy_r":0.13213069018419635,"conviction_terciles_r":[0.11958074358694365,0.22575289096933593,0.05101263327150186]}}}}