diff --git a/fieldtests/m1-self-description/README.md b/fieldtests/m1-self-description/README.md
new file mode 100644
index 0000000..baf8449
--- /dev/null
+++ b/fieldtests/m1-self-description/README.md
@@ -0,0 +1,18 @@
+# Milestone 36 fieldtest — "Self-description: every surface explains itself"
+
+Empirical, binary-only check of the milestone promise: that a deployment-posture
+agent with **only** the `aura` binary (no engine sources, no repo docs, no
+hand-written bootstrap card) can bootstrap from the surfaces alone.
+
+Every artefact here was produced touching nothing but the release binary
+(`d26f0c8`) and what it emits (help text, `aura new` scaffold, introspection
+output, error messages). One child dir per scenario; each README states the
+property it protects. Full findings + verdict: `docs/specs/fieldtest-m1-self-description.md`.
+
+| dir | axis | outcome |
+|-----|------|---------|
+| s1_bootstrap_author_validate | cold bootstrap → author → validate | green |
+| s2_execution_pulse_idiom     | execution semantics + pulse idiom  | green (1 friction) |
+| s3_vocabulary_breadth        | vocabulary self-description breadth| pass (1 friction) |
+| s4_document_ramp             | document-first ramp from `{}`      | green (2 gaps) |
+| s5_trace_measurement         | trace / measurement path           | dead-end (1 bug, 1 gap) |
diff --git a/fieldtests/m1-self-description/s1_bootstrap_author_validate/README.md b/fieldtests/m1-self-description/s1_bootstrap_author_validate/README.md
new file mode 100644
index 0000000..c717461
--- /dev/null
+++ b/fieldtests/m1-self-description/s1_bootstrap_author_validate/README.md
@@ -0,0 +1,33 @@
+# s1 — cold bootstrap → author → validate
+
+**Protected property:** starting from `aura --help` alone (no repo, no docs), a
+downstream agent can scaffold a project, author a new strategy over the
+discovered op-grammar vocabulary, and drive it to a green backtest — using only
+what the binary emits.
+
+## Trail (binary-only)
+1. `aura --help` — states what aura is, the two-layer model, and the execution
+   model (bias in [-1,+1], held as target position, stop = R).
+2. `aura new demo-strat` — scaffolds `Aura.toml`, `blueprints/signal.json`, and a
+   machine-written `CLAUDE.md` bootstrap card.
+3. `aura graph build --help` — the op-list authoring grammar (one line of meaning
+   per op).
+4. `aura graph introspect --vocabulary` / `--node <T>` — node types and port
+   schemas.
+5. Author `ema_cross.oplist.json` (this dir); build it:
+   `aura graph build < ema_cross.oplist.json > blueprints/ema_cross.json`
+6. Validate green:
+   - synthetic: `aura run blueprints/ema_cross.json` → exit 0 (18-cycle synthetic
+     stream → 0 trades; all-zero metrics, no note that the stream is tiny).
+   - real: `aura run blueprints/ema_cross.json --real EURUSD --from 1577836800000
+     --to 1583020800000` → 3944 trades, valid metrics JSON, exit 0.
+
+`ema_cross.blueprint.json` is the built artefact `graph build` emitted.
+
+## Notes
+- The harness auto-wraps the bias with `sim-optimal+risk-executor` and reports R
+  metrics even though the blueprint emits only a bias — confirming the documented
+  execution model without any extra authoring.
+- Minor friction: `graph build` has no op to set the blueprint name; it defaults
+  to `graph`, and that name leaks into the sweep axis namespace
+  (`graph.fast.length`).
diff --git a/fieldtests/m1-self-description/s1_bootstrap_author_validate/ema_cross.blueprint.json b/fieldtests/m1-self-description/s1_bootstrap_author_validate/ema_cross.blueprint.json
new file mode 100644
index 0000000..c1ee8f0
--- /dev/null
+++ b/fieldtests/m1-self-description/s1_bootstrap_author_validate/ema_cross.blueprint.json
@@ -0,0 +1 @@
+{"format_version":1,"blueprint":{"name":"graph","doc":"EMA(5)/EMA(20) spread clamped to a directional bias","nodes":[{"primitive":{"type":"EMA","name":"fast","bound":[{"pos":0,"name":"length","kind":"I64","value":{"I64":5}}]}},{"primitive":{"type":"EMA","name":"slow","bound":[{"pos":0,"name":"length","kind":"I64","value":{"I64":20}}]}},{"primitive":{"type":"Sub","name":"spread"}},{"primitive":{"type":"Bias","name":"bias","bound":[{"pos":0,"name":"scale","kind":"F64","value":{"F64":0.25}}]}}],"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}],"source":"F64"}],"output":[{"node":3,"field":0,"name":"bias"}]}}
\ No newline at end of file
diff --git a/fieldtests/m1-self-description/s1_bootstrap_author_validate/ema_cross.oplist.json b/fieldtests/m1-self-description/s1_bootstrap_author_validate/ema_cross.oplist.json
new file mode 100644
index 0000000..6bab547
--- /dev/null
+++ b/fieldtests/m1-self-description/s1_bootstrap_author_validate/ema_cross.oplist.json
@@ -0,0 +1,13 @@
+[
+  {"op":"source","role":"price","kind":"F64"},
+  {"op":"add","type":"EMA","name":"fast","bind":{"length":{"I64":5}}},
+  {"op":"add","type":"EMA","name":"slow","bind":{"length":{"I64":20}}},
+  {"op":"feed","role":"price","into":["fast.series","slow.series"]},
+  {"op":"add","type":"Sub","name":"spread"},
+  {"op":"connect","from":"fast.value","to":"spread.lhs"},
+  {"op":"connect","from":"slow.value","to":"spread.rhs"},
+  {"op":"add","type":"Bias","name":"bias","bind":{"scale":{"F64":0.25}}},
+  {"op":"connect","from":"spread.value","to":"bias.signal"},
+  {"op":"expose","from":"bias.bias","as":"bias"},
+  {"op":"doc","text":"EMA(5)/EMA(20) spread clamped to a directional bias"}
+]
diff --git a/fieldtests/m1-self-description/s2_execution_pulse_idiom/README.md b/fieldtests/m1-self-description/s2_execution_pulse_idiom/README.md
new file mode 100644
index 0000000..53833a9
--- /dev/null
+++ b/fieldtests/m1-self-description/s2_execution_pulse_idiom/README.md
@@ -0,0 +1,32 @@
+# s2 — execution semantics + one-shot/pulse idiom
+
+**Protected property:** from the surfaces alone a consumer can learn (a) what the
+strategy's output stream means, (b) how it is executed against a protective stop,
+and (c) the signal-side idiom the surfaces recommend when a held one-shot / pulse
+behaviour is wanted — and can author that idiom to a green run.
+
+## What the surfaces say
+- `aura --help`: "a strategy emits a bias in [-1,+1] per cycle, held as the
+  continuously-tracked target position; a protective stop defines the risk unit
+  R, and signal quality is measured in R."
+- Node schemas make the execution layer concrete: `Bias` (clamp to [-1,+1]),
+  `FixedStop` (`price → stop_distance`, defines R), `PositionManagement`
+  (`bias + price + stop_distance + size → managed position in R`). The built-in
+  `run`/`sweep` harness supplies this risk executor automatically.
+- The scaffolded `CLAUDE.md`: "Entry signals become held state via the signal-side
+  latch/edge-pulse idiom (see `aura graph introspect --vocabulary`)."
+
+## Authored idioms (both build + validate green)
+- `latch_hold.oplist.json` — momentary crossover events → held state via `Latch`
+  (`set = fast>slow`, `reset = slow>fast`), held level → `Bias`. Runs green
+  (2543 trades over EURUSD 2020-01..03).
+- `edge_pulse.oplist.json` — the complementary one-shot pulse, built as the
+  first-difference of the latched level (`Delay(lag=1)` + `Sub`) fed to `Bias`
+  (+1 on entry edge, −1 on exit edge, 0 held). Builds + validates green.
+
+## Friction recorded
+The `CLAUDE.md` names the "latch/edge-pulse idiom" and points to
+`graph introspect --vocabulary`, but that surface only lists node one-liners —
+it lists `Latch` but no `edge`/`pulse` primitive and no composition recipe. The
+pulse *is* constructible (Latch→Delay→Sub→Bias), but the consumer must infer the
+first-difference recipe; the pointer resolves to a list, not a recipe.
diff --git a/fieldtests/m1-self-description/s2_execution_pulse_idiom/edge_pulse.blueprint.json b/fieldtests/m1-self-description/s2_execution_pulse_idiom/edge_pulse.blueprint.json
new file mode 100644
index 0000000..142b88e
--- /dev/null
+++ b/fieldtests/m1-self-description/s2_execution_pulse_idiom/edge_pulse.blueprint.json
@@ -0,0 +1 @@
+{"format_version":1,"blueprint":{"name":"graph","doc":"edge-pulse: first-difference of the latched level, +1 on entry edge -1 on exit edge","nodes":[{"primitive":{"type":"SMA","name":"fast","bound":[{"pos":0,"name":"length","kind":"I64","value":{"I64":5}}]}},{"primitive":{"type":"SMA","name":"slow","bound":[{"pos":0,"name":"length","kind":"I64","value":{"I64":20}}]}},{"primitive":{"type":"Gt","name":"cross_up"}},{"primitive":{"type":"Gt","name":"cross_dn"}},{"primitive":{"type":"Latch","name":"hold"}},{"primitive":{"type":"Delay","name":"prev","bound":[{"pos":0,"name":"lag","kind":"I64","value":{"I64":1}}]}},{"primitive":{"type":"Sub","name":"edge"}},{"primitive":{"type":"Bias","name":"bias","bound":[{"pos":0,"name":"scale","kind":"F64","value":{"F64":1.0}}]}}],"edges":[{"from":0,"to":2,"slot":0,"from_field":0},{"from":1,"to":2,"slot":1,"from_field":0},{"from":1,"to":3,"slot":0,"from_field":0},{"from":0,"to":3,"slot":1,"from_field":0},{"from":2,"to":4,"slot":0,"from_field":0},{"from":3,"to":4,"slot":1,"from_field":0},{"from":4,"to":5,"slot":0,"from_field":0},{"from":4,"to":6,"slot":0,"from_field":0},{"from":5,"to":6,"slot":1,"from_field":0},{"from":6,"to":7,"slot":0,"from_field":0}],"input_roles":[{"name":"price","targets":[{"node":0,"slot":0},{"node":1,"slot":0}],"source":"F64"}],"output":[{"node":7,"field":0,"name":"bias"}]}}
\ No newline at end of file
diff --git a/fieldtests/m1-self-description/s2_execution_pulse_idiom/edge_pulse.oplist.json b/fieldtests/m1-self-description/s2_execution_pulse_idiom/edge_pulse.oplist.json
new file mode 100644
index 0000000..869af7f
--- /dev/null
+++ b/fieldtests/m1-self-description/s2_execution_pulse_idiom/edge_pulse.oplist.json
@@ -0,0 +1,24 @@
+[
+  {"op":"source","role":"price","kind":"F64"},
+  {"op":"add","type":"SMA","name":"fast","bind":{"length":{"I64":5}}},
+  {"op":"add","type":"SMA","name":"slow","bind":{"length":{"I64":20}}},
+  {"op":"feed","role":"price","into":["fast.series","slow.series"]},
+  {"op":"add","type":"Gt","name":"cross_up"},
+  {"op":"connect","from":"fast.value","to":"cross_up.a"},
+  {"op":"connect","from":"slow.value","to":"cross_up.b"},
+  {"op":"add","type":"Gt","name":"cross_dn"},
+  {"op":"connect","from":"slow.value","to":"cross_dn.a"},
+  {"op":"connect","from":"fast.value","to":"cross_dn.b"},
+  {"op":"add","type":"Latch","name":"hold"},
+  {"op":"connect","from":"cross_up.value","to":"hold.set"},
+  {"op":"connect","from":"cross_dn.value","to":"hold.reset"},
+  {"op":"add","type":"Delay","name":"prev","bind":{"lag":{"I64":1}}},
+  {"op":"connect","from":"hold.value","to":"prev.series"},
+  {"op":"add","type":"Sub","name":"edge"},
+  {"op":"connect","from":"hold.value","to":"edge.lhs"},
+  {"op":"connect","from":"prev.value","to":"edge.rhs"},
+  {"op":"add","type":"Bias","name":"bias","bind":{"scale":{"F64":1.0}}},
+  {"op":"connect","from":"edge.value","to":"bias.signal"},
+  {"op":"expose","from":"bias.bias","as":"bias"},
+  {"op":"doc","text":"edge-pulse: first-difference of the latched level, +1 on entry edge -1 on exit edge"}
+]
diff --git a/fieldtests/m1-self-description/s2_execution_pulse_idiom/latch_hold.blueprint.json b/fieldtests/m1-self-description/s2_execution_pulse_idiom/latch_hold.blueprint.json
new file mode 100644
index 0000000..bcc8363
--- /dev/null
+++ b/fieldtests/m1-self-description/s2_execution_pulse_idiom/latch_hold.blueprint.json
@@ -0,0 +1 @@
+{"format_version":1,"blueprint":{"name":"graph","doc":"latched long: set on fast>slow, reset on slow>fast, held as bias","nodes":[{"primitive":{"type":"SMA","name":"fast","bound":[{"pos":0,"name":"length","kind":"I64","value":{"I64":5}}]}},{"primitive":{"type":"SMA","name":"slow","bound":[{"pos":0,"name":"length","kind":"I64","value":{"I64":20}}]}},{"primitive":{"type":"Gt","name":"cross_up"}},{"primitive":{"type":"Gt","name":"cross_dn"}},{"primitive":{"type":"Latch","name":"hold"}},{"primitive":{"type":"Bias","name":"bias","bound":[{"pos":0,"name":"scale","kind":"F64","value":{"F64":1.0}}]}}],"edges":[{"from":0,"to":2,"slot":0,"from_field":0},{"from":1,"to":2,"slot":1,"from_field":0},{"from":1,"to":3,"slot":0,"from_field":0},{"from":0,"to":3,"slot":1,"from_field":0},{"from":2,"to":4,"slot":0,"from_field":0},{"from":3,"to":4,"slot":1,"from_field":0},{"from":4,"to":5,"slot":0,"from_field":0}],"input_roles":[{"name":"price","targets":[{"node":0,"slot":0},{"node":1,"slot":0}],"source":"F64"}],"output":[{"node":5,"field":0,"name":"bias"}]}}
\ No newline at end of file
diff --git a/fieldtests/m1-self-description/s2_execution_pulse_idiom/latch_hold.oplist.json b/fieldtests/m1-self-description/s2_execution_pulse_idiom/latch_hold.oplist.json
new file mode 100644
index 0000000..a45c126
--- /dev/null
+++ b/fieldtests/m1-self-description/s2_execution_pulse_idiom/latch_hold.oplist.json
@@ -0,0 +1,19 @@
+[
+  {"op":"source","role":"price","kind":"F64"},
+  {"op":"add","type":"SMA","name":"fast","bind":{"length":{"I64":5}}},
+  {"op":"add","type":"SMA","name":"slow","bind":{"length":{"I64":20}}},
+  {"op":"feed","role":"price","into":["fast.series","slow.series"]},
+  {"op":"add","type":"Gt","name":"cross_up"},
+  {"op":"connect","from":"fast.value","to":"cross_up.a"},
+  {"op":"connect","from":"slow.value","to":"cross_up.b"},
+  {"op":"add","type":"Gt","name":"cross_dn"},
+  {"op":"connect","from":"slow.value","to":"cross_dn.a"},
+  {"op":"connect","from":"fast.value","to":"cross_dn.b"},
+  {"op":"add","type":"Latch","name":"hold"},
+  {"op":"connect","from":"cross_up.value","to":"hold.set"},
+  {"op":"connect","from":"cross_dn.value","to":"hold.reset"},
+  {"op":"add","type":"Bias","name":"bias","bind":{"scale":{"F64":1.0}}},
+  {"op":"connect","from":"hold.value","to":"bias.signal"},
+  {"op":"expose","from":"bias.bias","as":"bias"},
+  {"op":"doc","text":"latched long: set on fast>slow, reset on slow>fast, held as bias"}
+]
diff --git a/fieldtests/m1-self-description/s3_vocabulary_breadth/README.md b/fieldtests/m1-self-description/s3_vocabulary_breadth/README.md
new file mode 100644
index 0000000..748f995
--- /dev/null
+++ b/fieldtests/m1-self-description/s3_vocabulary_breadth/README.md
@@ -0,0 +1,22 @@
+# s3 — vocabulary self-description breadth
+
+**Protected property:** every closed-vocabulary entry class the binary exposes is
+reachable and carries a non-empty one-line meaning, and no entry's meaning is a
+byte-identical (non-discriminating) duplicate of a sibling in the same class.
+
+`breadth_probe.sh` drives only `aura` introspection output; `breadth_probe.out`
+is its captured result. Run with `AURA=<path-to-release-aura> bash breadth_probe.sh`.
+
+## Result (see breadth_probe.out)
+- 33/33 node types resolve via `graph introspect --node <T>` with a
+  `"<Name> — <meaning>"` schema. PASS.
+- 7/7 folds, 6/6 process blocks, 6/6 campaign blocks, 17/17 metrics reachable and
+  carry a meaning (metrics also carry applicability tags). PASS.
+- **One blemish:** three distinct node types — `CarryCost`, `ConstantCost`,
+  `VolSlippageCost` — share the byte-identical one-liner
+  *"cost-model node: charges its cost in R from position geometry, at close or
+  accrued per held cycle"*. From `--vocabulary` (the primary discovery surface)
+  a consumer cannot tell them apart; the distinguishing detail (the param
+  `carry_per_cycle` vs `cost_per_trade` vs `slip_vol_mult`, and the extra
+  `volatility` input) lives only in `--node` and in the campaign `cost` slot
+  prose. The one-liner exists (C29 satisfied) but is not entry-specific.
diff --git a/fieldtests/m1-self-description/s3_vocabulary_breadth/breadth_probe.out b/fieldtests/m1-self-description/s3_vocabulary_breadth/breadth_probe.out
new file mode 100644
index 0000000..62ce110
--- /dev/null
+++ b/fieldtests/m1-self-description/s3_vocabulary_breadth/breadth_probe.out
@@ -0,0 +1,45 @@
+== node vocabulary: every node resolves via --node with a meaning ==
+  nodes probed: 33
+== duplicate node one-liners (non-discriminating meanings) ==
+  x3 identical: cost-model node: charges its cost in R from position geometry, at close or accrued per held cycle
+== folds carry a meaning ==
+  ok: Count
+  ok: Sum
+  ok: Mean
+  ok: Min
+  ok: Max
+  ok: First
+  ok: Last
+== process blocks resolve via --block ==
+  ok: std::sweep
+  ok: std::gate
+  ok: std::walk_forward
+  ok: std::monte_carlo
+  ok: std::generalize
+  ok: std::grid
+== campaign blocks resolve via --block ==
+  ok: std::data
+  ok: std::risk
+  ok: std::cost
+  ok: std::strategy
+  ok: std::process_ref
+  ok: std::presentation
+== metrics carry an applicability tag + meaning ==
+  ok: expectancy_r
+  ok: win_rate
+  ok: avg_win_r
+  ok: avg_loss_r
+  ok: profit_factor
+  ok: max_r_drawdown
+  ok: sqn
+  ok: sqn_normalized
+  ok: net_expectancy_r
+  ok: n_trades
+  ok: n_open_at_end
+  ok: total_pips
+  ok: max_drawdown
+  ok: bias_sign_flips
+  ok: deflated_score
+  ok: overfit_probability
+  ok: neighbourhood_score
+RESULT: fail=0
diff --git a/fieldtests/m1-self-description/s3_vocabulary_breadth/breadth_probe.sh b/fieldtests/m1-self-description/s3_vocabulary_breadth/breadth_probe.sh
new file mode 100755
index 0000000..81e91b6
--- /dev/null
+++ b/fieldtests/m1-self-description/s3_vocabulary_breadth/breadth_probe.sh
@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+# Scenario 3 — vocabulary self-description breadth probe.
+# Protected property: every closed-vocabulary entry class the binary exposes is
+# REACHABLE and carries a non-empty one-line meaning; no entry's meaning is a
+# byte-for-byte duplicate of another entry in the SAME class (a duplicate is a
+# non-discriminating meaning).
+# Binary-only: uses nothing but `aura` introspection output.
+set -u
+AURA="${AURA:?set AURA to the release binary path}"
+
+fail=0
+
+echo "== node vocabulary: every node resolves via --node with a meaning =="
+nodes=$("$AURA" graph introspect --vocabulary | awk '{print $1}')
+for n in $nodes; do
+  line=$("$AURA" graph introspect --node "$n" 2>&1 | head -1)
+  case "$line" in
+    "$n — "*) : ;;                        # "<Name> — <meaning>"
+    *) echo "  MISSING/BAD meaning for node $n: [$line]"; fail=1 ;;
+  esac
+done
+echo "  nodes probed: $(echo "$nodes" | wc -w)"
+
+echo "== duplicate node one-liners (non-discriminating meanings) =="
+"$AURA" graph introspect --vocabulary \
+  | sed -E 's/^[A-Za-z0-9_]+ +//' \
+  | sort | uniq -c | sort -rn \
+  | awk '$1 > 1 { print "  x"$1" identical: "substr($0, index($0,$2)) }'
+
+echo "== folds carry a meaning =="
+"$AURA" graph introspect --folds | awk 'NF==0{next} {print "  ok: "$1}'
+
+echo "== process blocks resolve via --block =="
+for b in $("$AURA" process introspect --vocabulary | awk '{print $1}'); do
+  "$AURA" process introspect --block "$b" >/dev/null 2>&1 && echo "  ok: $b" || { echo "  BAD: $b"; fail=1; }
+done
+
+echo "== campaign blocks resolve via --block =="
+for b in $("$AURA" campaign introspect --vocabulary | awk '{print $1}'); do
+  "$AURA" campaign introspect --block "$b" >/dev/null 2>&1 && echo "  ok: $b" || { echo "  BAD: $b"; fail=1; }
+done
+
+echo "== metrics carry an applicability tag + meaning =="
+"$AURA" process introspect --metrics | awk '{print "  ok: "$1}'
+
+echo "RESULT: fail=$fail"
diff --git a/fieldtests/m1-self-description/s4_document_ramp/README.md b/fieldtests/m1-self-description/s4_document_ramp/README.md
new file mode 100644
index 0000000..c75ed63
--- /dev/null
+++ b/fieldtests/m1-self-description/s4_document_ramp/README.md
@@ -0,0 +1,38 @@
+# s4 — document-first ramp (grow from `{}` to a runnable campaign)
+
+**Protected property:** using only `--unwired` introspection and validation
+diagnostics, a consumer can grow a process document and a campaign document from a
+bare `{}` to a registered, runnable state, and run the campaign green.
+
+## Trail (binary-only)
+1. `echo '{}' > x.json; aura process introspect --unwired x.json` — lists the
+   whole envelope (`format_version`, `kind`, `name`, `pipeline`).
+2. Grow `process.json`: `--unwired` on a doc with `pipeline:[]` says "a process
+   needs at least one stage"; a stage `{}` is told `pipeline[0].block (required,
+   block id)` → correct shape is `{"block":"std::sweep"}`.
+   `aura process validate` → valid; `aura process register` → content id.
+3. Grow `campaign.json` similarly (`aura campaign introspect --unwired`,
+   `--block std::*`). `aura campaign validate` passes all three tiers
+   (intrinsic / referential / executable); `register` → content id;
+   `campaign run <id>` → 3 members, green.
+
+`process.json` and `campaign.json` in this dir are the final registered forms;
+`ema_open.oplist.json` is the strategy authored with an **open** `fast.length`
+param (see friction 2).
+
+## Frictions recorded
+1. **`process.ref` shape under-documented.** `campaign introspect --block
+   std::process_ref` and `--unwired` both describe it as *"content id of a process
+   document"* (reads as a bare string), but the validator rejects the bare string:
+   `unknown variant '<id>', expected 'content_id' or 'identity_id'` — the tagged
+   `{"content_id": "<id>"}` form is required and appears nowhere in the
+   introspection. Recoverable only via the validate error.
+2. **Two-layer axis-namespace seam.** `aura sweep <bp> --list-axes` presents
+   `graph.fast.length` as sweepable (overriding the *bound* default, #246), and
+   the sugar `aura sweep --axis graph.fast.length=…` accepts it. But the canonical
+   **document** form rejects that same name: `axis "graph.fast.length" is not in
+   the param space` — a campaign axis must be an **open** param, named **without**
+   the `graph.` prefix (`fast.length`, per `graph introspect --params`, which
+   prints *nothing* for a fully-bound blueprint). The name a consumer learns from
+   the sugar (`graph.fast.length`) is not the name the document layer wants
+   (`fast.length`), and no surface reconciles the two.
diff --git a/fieldtests/m1-self-description/s4_document_ramp/campaign.json b/fieldtests/m1-self-description/s4_document_ramp/campaign.json
new file mode 100644
index 0000000..9a5b44b
--- /dev/null
+++ b/fieldtests/m1-self-description/s4_document_ramp/campaign.json
@@ -0,0 +1,10 @@
+{
+  "format_version":1,
+  "kind":"campaign",
+  "name":"ema_axis_sweep",
+  "data":{"instruments":["EURUSD"],"windows":[{"from_ms":1577836800000,"to_ms":1583020800000}]},
+  "strategies":[{"ref":{"content_id":"2c94edd4e3a3253fa446f2700f5ada1cb4cb9ceafcd99494d8d8e5244e3148a6"},"axes":{"fast.length":{"kind":"I64","values":[3,5,8]}}}],
+  "process":{"ref":{"content_id":"b3c0f7548731f4078ac6f0ba4444781ff51b067b4dd25567a12c49423b5d63ef"}},
+  "seed":0,
+  "presentation":{"persist_taps":["r_equity"],"emit":["family_table"]}
+}
diff --git a/fieldtests/m1-self-description/s4_document_ramp/ema_open.oplist.json b/fieldtests/m1-self-description/s4_document_ramp/ema_open.oplist.json
new file mode 100644
index 0000000..4b5e015
--- /dev/null
+++ b/fieldtests/m1-self-description/s4_document_ramp/ema_open.oplist.json
@@ -0,0 +1,13 @@
+[
+  {"op":"source","role":"price","kind":"F64"},
+  {"op":"add","type":"EMA","name":"fast"},
+  {"op":"add","type":"EMA","name":"slow","bind":{"length":{"I64":20}}},
+  {"op":"feed","role":"price","into":["fast.series","slow.series"]},
+  {"op":"add","type":"Sub","name":"spread"},
+  {"op":"connect","from":"fast.value","to":"spread.lhs"},
+  {"op":"connect","from":"slow.value","to":"spread.rhs"},
+  {"op":"add","type":"Bias","name":"bias","bind":{"scale":{"F64":0.25}}},
+  {"op":"connect","from":"spread.value","to":"bias.signal"},
+  {"op":"expose","from":"bias.bias","as":"bias"},
+  {"op":"doc","text":"EMA(open fast)/EMA(20) spread bias, fast.length swept by campaign"}
+]
diff --git a/fieldtests/m1-self-description/s4_document_ramp/process.json b/fieldtests/m1-self-description/s4_document_ramp/process.json
new file mode 100644
index 0000000..4de9813
--- /dev/null
+++ b/fieldtests/m1-self-description/s4_document_ramp/process.json
@@ -0,0 +1 @@
+{"format_version":1,"kind":"process","name":"minimal_sweep","pipeline":[{"block":"std::sweep"}]}
diff --git a/fieldtests/m1-self-description/s5_trace_measurement/README.md b/fieldtests/m1-self-description/s5_trace_measurement/README.md
new file mode 100644
index 0000000..66db3b5
--- /dev/null
+++ b/fieldtests/m1-self-description/s5_trace_measurement/README.md
@@ -0,0 +1,39 @@
+# s5 — trace / measurement path
+
+**Protected property:** from the surfaces a consumer can discover which verbs
+persist per-cycle traces and reach a signal-quality measurement — the milestone's
+own headline being "signal quality is measured in R".
+
+## What the surfaces say
+`aura --help`: "Traces: `sweep --real --trace` / `walkforward --real --trace`
+record per-cycle taps under runs/, consumed by `aura chart` and `aura measure`."
+`aura measure ic --help`: "Information Coefficient of a **signal** tap against
+forward returns of a **price** tap" — requires `--signal <SIGNAL>` and
+`--price <PRICE>`.
+
+## What actually happens
+- Discovery works: `runs families` lists the traced families; `measure ic`'s
+  `<RUN>` is the member path **relative to** `runs/traces/`
+  (`<family>/<instr-window>/<param-combo>`); the missing-tap error is clear and
+  lists available taps. `measure ic` runs green on the persisted taps.
+- **Dead-end for the intended inputs.** The only taps any surface-reachable verb
+  persists are the closed presentation set `equity` / `exposure` / `r_equity`
+  (`net_r_equity`) — execution-side R/pip curves, **not** the strategy's bias
+  signal nor the instrument price. So `measure ic` can only be fed, e.g.,
+  `--signal exposure --price equity`, which is not a signal-vs-price IC at all
+  (result ≈ noise, 0.0019).
+- **Declared taps are silently dropped.** `graph build --help` documents the op
+  `tap` as *"declare a **recordable** tap on a wire"*. `tapped.oplist.json` (this
+  dir) declares `tap bias.bias as signal` and `tap fast.value as price`, yet after
+  `sweep --real --trace` the persisted set is still `["equity","exposure",
+  "r_equity"]`; both `measure ic --signal signal` and `chart --tap signal` report
+  the tap does not exist. There is no surface-documented path to persist a genuine
+  signal or price tap, so `measure ic`'s stated contract is unreachable end-to-end.
+
+## Evidence (verbatim)
+```
+$ aura measure ic --signal signal --price price <tapped-run>
+aura: run '…' has no tap 'signal' (taps: ["equity", "exposure", "r_equity"])
+$ aura chart 010f8afa-0 --tap signal
+aura: no family member has a tap named 'signal'        (exit 0)
+```
diff --git a/fieldtests/m1-self-description/s5_trace_measurement/tapped.oplist.json b/fieldtests/m1-self-description/s5_trace_measurement/tapped.oplist.json
new file mode 100644
index 0000000..13ac131
--- /dev/null
+++ b/fieldtests/m1-self-description/s5_trace_measurement/tapped.oplist.json
@@ -0,0 +1,15 @@
+[
+  {"op":"source","role":"price","kind":"F64"},
+  {"op":"add","type":"SMA","name":"fast","bind":{"length":{"I64":5}}},
+  {"op":"add","type":"SMA","name":"slow","bind":{"length":{"I64":20}}},
+  {"op":"feed","role":"price","into":["fast.series","slow.series"]},
+  {"op":"add","type":"Sub","name":"spread"},
+  {"op":"connect","from":"fast.value","to":"spread.lhs"},
+  {"op":"connect","from":"slow.value","to":"spread.rhs"},
+  {"op":"add","type":"Bias","name":"bias","bind":{"scale":{"F64":0.25}}},
+  {"op":"connect","from":"spread.value","to":"bias.signal"},
+  {"op":"tap","from":"bias.bias","as":"signal"},
+  {"op":"tap","from":"fast.value","as":"price"},
+  {"op":"expose","from":"bias.bias","as":"bias"},
+  {"op":"doc","text":"tapped: bias exposed and tapped as signal, fast tapped as price"}
+]