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168 Commits

Author SHA1 Message Date
Brummel a6fd93adba feat(codegen): pre-resolve the App callee in MIR; delete is_static_callee + type_home_module (mir.2)
Second re-deriver removal of the typed-MIR milestone (spec
docs/specs/0060-typed-mir.md, plan docs/plans/0116-mir.2-callee-static.md).
Static-callee resolution moves out of codegen and into lower_to_mir:
every Term::App callee is classified once, mirroring check's own synth
Term::Var ladder (lib.rs:3409-3582), and emitted as a resolved Callee.
Codegen reads the callee identity off MIR and routes each kind to the
right lowering. The codegen re-derivers is_static_callee and
type_home_module are deleted, and the lower_app <-> is_static_callee
lockstep pair is struck from CLAUDE.md.

Callee reshape (beyond the spec's original {module, fn_name} sketch —
spec 0060's Concrete-code-shapes block is updated in this iteration):

  pub enum Callee {
      Static  { module, fn_name, sig: Type },  // user/prelude fn -> emit_call, module pre-resolved
      Builtin { name, sig: Type },             // operator/intrinsic -> inline opcode lowering
      Indirect(Box<MTerm>),                    // dynamic: fn-pointer / closure / shadowed name
  }

Two forced refinements, both settled in planning:

- sig:Type on each resolved variant. drop::synth_callee_ret_mode reads
  the callee ret_mode, today off Callee::Indirect(inner).ty(). A
  resolved callee has no sub-term, so the sig (= synth_pure(callee),
  mode-preserving) is the lossless replacement. This is NOT a mir.3
  pull-forward: the MArg param-mode / consume_count fields stay at their
  mir.1 defaults. Without it, every statically-resolved call would lose
  its drop signal and the RawBuf / int_to_str RC-stats pins mir.1b fixed
  would regress.

- Builtin variant. Operators and the str-num builtins (+, not,
  str_concat, ...) are lowered inline by name and have no module/fn_name;
  a separate variant is cleaner than a sentinel module. The classifier
  decides Builtin vs Static from CHECK'S OWN resolution (a name in
  env.globals with no owning module is a builtin), never a copy of
  codegen's old is_static_callee allowlist. The recon's divergence audit
  confirmed check's builtin set and codegen's inline-arm set match
  exactly, so the single-engine rule is mechanically satisfiable with no
  env threading gap.

type_home_module is fully deletable: a workspace-wide grep confirmed no
program references a type-scoped T.fn as a value, so its only other
consumer (resolve_top_level_fn) collapses to the module-name fallback
with no behaviour change. (The spec's "x3 mirrors" wording over-counted;
the live surface was the definition plus two call sites.)

Alternatives rejected during planning: sentinel module in Static
(ugly); builtins left as Indirect (breaks — no fn-pointer for an
operator); name-rewrite Static{name,sig} keeping lower_app's by-name
dispatch (blurs builtin/user and still needs sig). The mir.1b
re-synth-strictness trap (post-mono synth_pure re-unify surfacing
mode-strip / bare-vs-qualified / metavar leaks) did NOT fire under the
new producer path — qualify_local_types mode-preservation and the $u
wildcard normalisation from mir.1b held.

Verification (orchestrator, post-implement inspect): diff matches the
plan; grep-clean for is_static_callee + type_home_module across
ailang-codegen and ail; cargo build --workspace green; cargo test
--workspace 700 passed / 0 failed / 3 ignored (no #[ignore] added this
iteration — the 3 are the pre-existing #49 Str-leg pin + two doctests).
Acceptance witnesses green: #53 (mono_new_over_user_adt_builds_and_runs),
#51 (rawbuf_new_int_size_only_builds_and_runs still builds), show_print
cross-module (print_user_adt_runs_end_to_end), the new mir.2 pins
(mir2_resolved_callee_kinds_run_end_to_end, callee_classification_*,
strengthened new_over_user_adt_carries_node_types asserting Callee::Static).
#49 heap-Str loop binder stays #[ignore] (lifts at mir.4).

Two new examples/ fixtures back the new pins (classify_pin.ail for the
producer classification pin, mir2_callee_kinds.ail for the E2E),
ail-parse / round-trip clean.

Forward note (cycle-close architect): crates/ail/tests/codegen_import_map_fallback_pin.rs:14-15
doc prose names lower_app's cross-module arm and synth_with_extras as
failure-mode targets — both now deleted (mir.2 / mir.1b). The pin's
protected invariant is still valid and green; the prose is stale and
wants a doc-honesty reword, left out of this iteration's footprint.
2026-05-31 19:27:56 +02:00
Brummel 895ba846e8 feat(codegen): switch the lowering walk from &Term to typed &MTerm (mir.1b)
Atomic completion of spec iteration mir.1 (docs/specs/0060-typed-mir.md):
codegen now consumes the typed MIR produced by `lower_to_mir` instead of
re-deriving types from the bare `ast::Term`. Every codegen helper that
took `&Term` (lower_term, lower_app, drop.rs, match_lower.rs) takes
`&MTerm` and reads each node's checker-proved type off `MTerm::ty()`.
The build path is `Workspace -> elaborate_workspace -> MirWorkspace ->
lower_workspace`; the public `lower_workspace*` entry points and their 18
call sites thread `&MirWorkspace`. The codegen-side type re-derivers
`synth_with_extras` + `synth_arg_type` (and the `builtin_ail_type` /
`builtin_effect_op_ret` mirror tables) are deleted — grep-clean. The
three re-derivers the spec keeps until mir.2/mir.3 (`type_home_module`,
`is_static_callee`, the second `infer_module_with_cross`) stay.

The mechanical Term->MTerm match-arm conversion was straightforward and
compiler-enforced. The substance was a set of producer-side correctness
gaps that only surface once codegen reads `MTerm::ty()` and once the
build path re-synthesises the post-mono AST through the canonical
`synth` (which, unlike the old codegen, fully re-unifies). Each was
root-caused against a failing e2e fixture:

1. `qualify_local_types` stripped fn-type modes (rebuilt `Type::Fn` with
   empty `param_modes` / `Implicit` `ret_mode`), so a monomorphised
   polymorphic intrinsic (`RawBuf.set`) lost its `Own` ret-mode and the
   owned temporary leaked at the call site. Made mode-preserving, like
   its sister `qualify_workspace_types` and `Subst::apply` (449df13).

2. `lower_to_mir::synth_pure` synthesises each node in isolation, so a
   nullary polymorphic ctor (`Nil : List<a>`) left its element type an
   unbound `$m` metavar that the canonical synth never pins. Codegen's
   mono unifier (`unify_for_subst`) already has a wildcard for exactly
   this — `$u`, the spelling the now-deleted codegen synth used — so the
   typed-MIR boundary normalises every residual `$m` to `$u` once
   (`wildcard_residual_metavars`), rather than teaching each consumer to
   tolerate a raw metavar.

3. The class-method mono arm (`synthesise_mono_fn`) substituted the
   registry-canonical *qualified* instance type into a method appended to
   the instance's own module, minting a `show_user_adt.IntBox` param
   against a bare-`IntBox` body. Localised to bare before substitution,
   symmetric to the free-fn arm (600565d).

4. Monomorphisation synthesises *downward* class-dispatch references —
   prelude's `print__<IntBox>` names the instance module `show_user_adt`
   that prelude never imports. The post-mono re-synth in `lower_module`
   seeds every workspace module name as an identity import (excluding the
   current module, to keep own types bare) so the qualified-var path
   resolves these; the canonical `synth` used by `check_workspace` stays
   strict.

5. Post-mono, a cross-module callee can name the consumer's *own* ADT
   qualified (`show_user_adt.IntBox`) where the consumer synthesises it
   bare — a spelling split that cannot exist pre-mono (the param is
   polymorphic there). synth's App arm strips the current module's own
   qualifier from both sides before unifying (`strip_own_module_qual`),
   a no-op pre-mono.

Acceptance: whole workspace suite green (698 tests); `e2e` 98/98 and
`show_print_e2e` 3/3; `synth_with_extras`/`synth_arg_type` grep-clean in
codegen; #51/#53 fixtures build and run; lower_to_mir_ty pins green. The
#49 heap-Str loop-binder leak remains ignored (lifts at mir.4).

Builds on the standalone producer fix (600565d, free-fn own-ADT
localisation) and the two standalone mode-preservation fixes
(449df13 Subst::apply); those landed separately as they are
independently correct and inert on the old codegen.
2026-05-31 18:29:36 +02:00
Brummel 449df13c9c fix(check): preserve fn-type modes through Subst::apply
`Subst::apply` rebuilt every `Type::Fn` with `param_modes: vec![]`
and `ret_mode: Implicit`, discarding the modes the surrounding type
carried. That was harmless while nothing downstream of inference read
fn-type modes — but it is a latent under-specification: substitution
is meant to be type-preserving, and a fn type's modes are part of its
identity (an `(own T) -> (own U)` contract is not the same contract as
its borrow-returning sibling). Modes are positional over `params`, and
substitution remaps each param type element-wise without changing the
arity, so the mode lists stay aligned — preserving them is a clone, not
a re-derivation.

The typed-MIR boundary (milestone 0060) makes this load-bearing: a node
type synthesised by `lower_to_mir::synth_pure` ends with `subst.apply`,
and the codegen drop path reads `ret_mode == Own` off a call's callee
node to decide RC trackability. With the modes stripped here, an
Own-returning call read back `Implicit`, nothing was trackable, and a
heap-allocated binder leaked at scope close. Preserving the modes
restores that signal at the source rather than re-deriving it in codegen
(which is exactly the re-derivation the milestone exists to delete).

Safe by construction: `unify`'s Fn arm destructures modes with `..` and
compares only params/ret/effects, so carrying modes through `apply`
cannot change unification; and `Type`'s custom `PartialEq` already
treats `Implicit` and `Own` as interchangeable (only `Borrow` is
distinct), so equality outcomes are unaffected except where preserving
a `Borrow` is the more correct answer anyway. Whole `ailang-check`
suite stays green.

RED pin: crates/ailang-check/tests/subst_preserves_modes.rs.
2026-05-31 18:01:24 +02:00
Brummel 600565d356 fix(check): localize own-ADT type-args in free-fn mono; complete the lower_to_mir producer
Additive producer-side work for the typed-MIR milestone (spec
docs/specs/0060-typed-mir.md), surfaced while building the mir.1b
codegen-consumption switch. Nothing here consumes MIR — codegen is
untouched; the whole existing suite stays green and one new RED pin
goes green. The mir.1b codegen switch itself stays in the working tree.

Headline fix — own-ADT type-arg localization in free-fn mono:

  monomorphise_workspace's free-fn arm normalises every observed
  type-arg through Registry::normalize_type_for_lookup. That
  normalisation is load-bearing for cross-module dedup and a stable
  specialisation symbol name, but it qualifies a *defining-module-own*
  ADT to `<module>.<T>`. synthesise_mono_fn_for_free_fn then substitutes
  those qualified type-args into the polymorphic source signature and
  body, which are in the module's own *bare* convention (the qualify
  pre-pass deliberately leaves own-module type-cons bare — lib.rs:4358,
  "the current module sees its own types bare"). The result is a
  self-inconsistent specialisation: e.g. fold_left specialised with
  accumulator b := List<Int> minted
    ((std_list.List<Int>, Int) -> std_list.List<Int>,
     std_list.List<Int>, List<Int>) -> std_list.List<Int>
  — a qualified accumulator parameter against a bare list argument and a
  bare Lam body. check_workspace never hits this (it synths the pre-mono
  bodies, bare throughout); the old codegen tolerated it via the
  now-deleted synth_arg_type's loose type-tracking. The post-mono synth
  re-entry in lower_to_mir does full unification and correctly rejects
  it: `expected std_list.List<Int>, got List<Int>`.

  Fix: localize_own_types (mono.rs) strips the `<defining_module>.`
  prefix back to bare for the module's own ADTs, applied to the type-args
  before they are substituted, so the synthesised signature and body stay
  uniformly bare-own. The *stored* type_args remain normalised, so the
  symbol name and the Phase-3 rewrite-cursor key on the same canonical
  form — the byte-identity invariant between synthesis and rewrite is
  untouched. The ClassMethod arm needs no analogue: it already
  substitutes the un-normalised target.type_ (mono.rs:841).

  Alternatives rejected: (a) drop the normalisation in the shared
  apply_subst_and_normalize helper — breaks cross-module dedup, mints
  duplicate specialisations under divergent names. (b) Make
  lower_to_mir's synth treat `<owner>.T` and bare `T` as equal during
  unification — papers over the producer inconsistency in the consumer
  and contradicts the established own-types-stay-bare invariant the rest
  of check relies on. (c) Qualify the whole synthesised def own->qualified
  — fights lib.rs:4358 and would require the lower path to also flip,
  cascading the convention change through synth.

Producer completeness (additive, mirrors existing guards):

  - lower_module skips Type::Forall defs (lower_to_mir.rs), mirroring
    emit_module's guard. Polymorphic defs are stale source kept for
    round-trip; their bodies carry mono-rewritten call names for
    specialisations that were never synthesised, so a synth re-entry
    would hit UnknownIdentifier.
  - lower_module lowers non-literal const bodies to typed MTerm, carried
    in MirModule.consts (+ MirConst in ailang-mir). A non-literal const
    (e.g. a List ctor expression) needs a typed body once the consumer
    walk takes &MTerm; literal consts emit a global and need no body.
  - MirModule gains `ast: Module`, populated by lower_module — forward
    scaffolding the mir.1b codegen consumption reads for module
    structure. Populated here, consumed by the in-tree switch.

Verification: full `cargo test --workspace` green (697 passed, 0 failed)
with the codegen-consumption switch stashed out, including the new pin
crates/ailang-check/tests/lower_to_mir_ty.rs::poly_free_fn_accumulating_into_own_adt_elaborates
(RED before the localize fix with the exact mismatch above, GREEN after)
and the full e2e corpus (the own-ADT-poly demos elaborate clean and run
through the old codegen). This proves the producer fix is
regression-free and the remaining 22 e2e reds in the working tree are
codegen-consumption defects, not producer defects.
2026-05-31 17:41:05 +02:00
Brummel 135f4ceed7 feat(check): mir.1a — typed-MIR types + post-mono lower_to_mir + elaborate_workspace (additive)
First half of spec iteration mir.1 (docs/specs/0060-typed-mir.md,
plan docs/plans/0114-mir.1a-mir-infrastructure.md). Purely additive: a
new leaf crate plus a post-mono lowering walk plus the front-end entry.
Nothing consumes MIR yet — codegen and the CLI are untouched — so the
whole existing suite stays green (102 test-result-ok lines, 0 failed;
the one ignored is the #49 pin, which lifts at mir.4). mir.1b flips
codegen to consume MIR and deletes the synth_with_extras mirror.

What lands:
- `ailang-mir` (new leaf crate, depends only on ailang-core): MTerm /
  MArg / MArm / MLoopBinder / MNewArg / Callee / Mode / StrRep / MirDef
  / MirModule / MirWorkspace, structurally complete over all 17 Term
  variants plus the dedicated Str split (MTerm::Str{lit,rep}). Every
  later-iteration annotation field exists now at a mir.1 default
  (App.callee = Indirect, MArg.mode/consume_count = Owned/1, Str.rep =
  Static, New.elem = None); the struct shape will not change across
  mir.2–mir.5, only the values. MTerm::ty() reads the carried type.
- `ailang-check::lower_to_mir`: the post-mono walk. Carries no second
  type engine — it calls the canonical `synth` per node with fresh
  throwaway inference scaffolding (subst/counter/residuals/…), applies
  the substitution, and threads only the lexical locals/loop_stack,
  maintained by the same push/pop rules synth uses (Let, Loop, Lam,
  LetRec, and Match via synth's own type_check_pattern). This is the
  "one engine, not two" property the milestone buys, on the producer
  side.
- `ailang-check::elaborate_workspace`: the single front-end entry —
  check (diagnostics gate) → desugar+lift → monomorphise → lower_to_mir
  — transcribed from the CLI build path. check_workspace stays for the
  diagnostics-only callers.
- Three ty-fill pins (crates/ailang-check/tests/lower_to_mir_ty.rs)
  load the #51/#53/#49 witnesses as fixtures and elaborate the whole
  workspace, so lower_to_mir is exercised over the full prelude+kernel,
  not just the tiny witness. Two new witness fixtures
  (examples/new_{rawbuf_size_only,counter_user_adt}.ail); #49 reuses the
  existing loop_recur_str_binder_no_leak_pin.ail.

Deviations from the plan, all forced by ground truth and verified
against the live code before commit:
- FnDef.export is Option<String>, not bool — dropped from MirDef (the
  plan's note allowed this fallback). Codegen reads FnDef.export
  directly, unaffected.
- fn_param_types did not exist — lifted the param-type extraction into
  a shared pub(crate) fn and rewired both mono.rs sites
  (collect_mono_targets, collect_rewrite_targets) to it, so the
  param-type source cannot drift between mono and lower_to_mir. The
  helper unwraps a top-level Forall then reads Type::Fn.params —
  identical to the inner_ty extraction it replaces; the early-return
  non-fn guard is preserved at both sites. Behaviour-preserving (whole
  suite green; this is the only edit to existing mono behaviour).
- lower_module mirrors two more mono.rs scaffolding rules the plan
  under-transcribed: skip intrinsic-bodied fns (they are
  signature-only; lowering them would hit synth's Term::Intrinsic
  guard) and seed env.current_module + env.globals + env.imports per
  module so synth's Var lookup resolves post-mono specialisations
  (e.g. compare__Int) in the prelude.
- The #53 pin asserts the lowered (new Counter 42) init carries ty
  Counter, not that it is an MTerm::New: a monomorphic `new` over a
  user ADT is desugared to a dotted call `(app Counter.new 42)` before
  lower_to_mir runs (desugar.rs:1078-1098), so it lowers to MTerm::App.
  MTerm::New survives only for a polymorphic `new` carrying a written
  NewArg::Type (the #51 RawBuf path, covered by the rawbuf pin). The
  pin's intent — ty-fill correctness — is preserved; the structural
  variant is mir.2/mir.5 territory.
- ailang-mir uses workspace-inherited Cargo fields for consistency with
  the existing crates (added it to [workspace.dependencies]).

refs #49
2026-05-31 14:04:03 +02:00
Brummel ee4107c721 fix(check): honour the written element type-arg on polymorphic (new T …)
A `(new RawBuf (con Int) 3)` whose buffer is never observed by a later
get/set passed `ail check` but crashed `ail build` with
`RawBuf_new__Unit has no registered intercept`, and a forbidden
`(new RawBuf (con Unit) 3)` was wrongly accepted at check. Both legs
share one root: the `Term::New` desugar discarded the author's written
`NewArg::Type` before anything could use it.

This was never an inference problem. The element type is EXPLICITLY
known — the author wrote `(con Int)`. The defect was that the desugar
threw that known type away and relied on re-discovering it from
downstream use; with no use (size-only), `RawBuf.new`'s result-only
forall var stayed unpinned, mono Unit-defaulted it, and codegen aborted
on the unregistered `RawBuf_new__Unit` intercept. The fix USES the
written type instead of inferring it.

Mechanism:
- desugar.rs: a polymorphic `(new T <elem> …)` (carrying a written
  `NewArg::Type`) now SURVIVES into check instead of being lowered to
  `(app T.new …)`. A monomorphic `(new Counter 42)` (no type-arg) keeps
  the raw-buf.4 app-lowering unchanged.
- lib.rs synth `Term::New` arm: (a) validates the written element type
  against the constructed type's `param_in` set via
  `check_type_well_formed`, firing `ParamNotInRestrictedSet` naming the
  forbidden element (leg 2) — synth is the correct site because it has
  Env/registry access, unlike `pre_desugar_validation`; (b) binds the
  result-only forall var DIRECTLY to the written type (`?a := Int`, a
  trivial binding, no inference channel) by pushing a `FreeFnCall` whose
  metas are the written concrete types, so mono mints
  `RawBuf_new__<elem>` and never `__Unit`.
- mono.rs: `rewrite_mono_calls` and `interleave_slots` gain matching
  `Term::New` arms that each consume exactly one free-fn slot at a
  type-arg-bearing `Term::New` (mirroring synth's single observation,
  pushed before the value-args), and `rewrite_mono_calls` reduces the
  node to `(app <mangled> <value-args>)` so codegen never sees
  `Term::New` and the lib.rs:2200 `unreachable!` stays valid. The two
  walkers stay in lockstep.

The Unit-default policy in mono stays correct for genuinely-unobservable
vars (`is_empty(Nil)` etc.); only the case with a written `NewArg::Type`
is changed.

Alternatives rejected: an additive `type_args` field on `Term::App`
(~100 construction sites across 7 crates — a detour that builds a new
transport slot only to copy the already-known type into it); a runtime
type-witness parameter on `RawBuf.new` (invents a runtime value for a
pure type property); an identity-lambda wrapper carrying the element in
its param-type (hides a semantic property in a runtime construct). The
written type belongs where the author put it, carried to the one point
that consumes it.

Verification: both RED legs (committed 61b9d3f) now green; full
check/codegen/core/surface suites green; intercepts bijection and
hash-pin tests green; existing raw-buf int/float/bool fixtures still
build and run leak-clean (live=0).

Out of scope (pre-existing at HEAD, separate issue): a monomorphic
`(new Counter 42)` over a user ADT fails with `unknown variable:
Counter.new` — unrelated to the type-arg drop fixed here.

closes #51
2026-05-31 03:03:14 +02:00
Brummel a92bcaf969 fix(check): qualify cross-module kernel type-cons in user ADT fields
A consumer module's ADT field could reference a kernel-tier
auto-imported type by its bare name in op/value positions
(`(new RawBuf ...)`, `RawBuf.get`) but NOT in the type-constructor
position of the field declaration: `(con RawBuf (con Int))` stayed
the unqualified `RawBuf<Int>` and failed to unify with the
constructor argument's `raw_buf.RawBuf<Int>`, so a RawBuf could not
be stored in a user ADT field without spelling the qualified
`raw_buf.RawBuf`.

`qualify_workspace_module` skipped `Def::Type` entirely, and the
`Term::Ctor` arm only qualified field types of cross-module *owning*
types — a *local* type carrying a cross-module field was the
uncovered case. The fix qualifies each ctor field type in the
`Def::Type` arm via the existing `qualify_workspace_types`, which
upgrades only genuinely cross-module type-cons (skips
`own_local_types` and primitives), so a purely-local field is never
spuriously rewritten. This is a check-side workspace transform, not
the on-disk canonical form, so no module hash drifts (both hash-pin
tests stay green).

RED test `rawbuf_in_user_adt_field_resolves_bare_name` in
crates/ailang-check/tests/workspace.rs, with the bare-name fixture
(now checks/builds/runs -> 42, live=0, the ADT drop cascade frees
the buffer slab) and the qualified control twin.

This is the Series-substrate shape (a RawBuf wrapped in a user ADT),
so the inconsistency would have bitten the pending series milestone.

closes #50
2026-05-30 17:48:34 +02:00
Brummel 744ad41e47 fix(check): resolve type-scoped borrow-receiver ops in linearity (closes #46)
A function whose parameter is `borrow (RawBuf a)` and which calls
RawBuf.get or RawBuf.size on that parameter even once was rejected at
`ail check` with [consume-while-borrowed] — the exact borrow-receiver
use the ledger advertises for get/size. The diagnostic also misnamed the
cause: the receiver is read, not consumed.

Root cause: the linearity walk's callee_arg_modes looked up the callee
under its spelled name. A type-scoped polymorphic op is spelled
`RawBuf.get` at the call site, but check_module_with_visible registers
the kernel raw_buf ops under their bare def names (get/size). The lookup
missed, the receiver arg defaulted to Consume, and consuming a binder
whose borrow_count==1 (the Borrow param) fired the false positive. The
kernel signatures themselves are correct (receiver slot is `borrow`); the
only defect was the name-resolution gap in the linearity globals lookup.

Fix: on a direct-lookup miss, fall back to the bare method name via the
existing parse_method_qualifier + qualifier_is_class_shape resolvers,
gated on a class/type-shaped qualifier so lowercase cross-module-fn
qualifiers (std_list.length) are excluded. This is how the rest of the
checker already treats type-scoped polymorphic ops; the fix is general,
not RawBuf-specific.

This unblocks the natural borrow-helper decomposition (a shared
read-only buffer behind a helper fn) — the shape the downstream series
milestone's Series.at / Series.total_count need.

Surfaced by the raw-buf fieldtest (finding B1, docs/specs/0058).
RED-first: rawbuf_borrow_receiver_read_is_linearity_clean.
2026-05-30 17:13:56 +02:00
Brummel 75109f171d fix(check): param-not-in-restricted-set names the allowed set (closes #48)
The ParamNotInRestrictedSet diagnostic named the offending type, the
type-variable and the home type, but not the allowed set {Int, Float,
Bool} that design/models/0007 §4 promises it names. A downstream author
was told what is wrong but not what is right, and the kernel source that
carries the set is not available to a downstream consumer.

The allowed set already travels on the error struct (it flows into the
JSON `details.allowed`); only the human-readable `#[error]` render
dropped it. Append it to the Display string. JSON details unchanged.

Surfaced by the raw-buf fieldtest (finding B3, docs/specs/0058).
RED-first: param_in_reject_message_names_allowed_set pins the message
content before the one-line render fix.
2026-05-30 17:13:40 +02:00
Brummel 13e590cb46 iter raw-buf.6 kernel-stub-retirement (DONE 5/5): retire the stub, raw_buf is the sole base extension (refs #7)
Closes the raw-buf milestone. raw_buf (shipped raw-buf.1-.5; the
owned-drop resolution landed under bug #42/#43) has subsumed every
ratification role kernel_stub held -- Term::New end-to-end, the
param-in reject, kernel-tier auto-import, the monomorphic intrinsic
path, and the type-scoped polymorphic intrinsic mechanism (RawBuf's
four ops). The stub is now redundant; this iteration removes it.

Pure removal (-636/+49 across 22 files, 7 deleted):
- Rust surface: drop `mod kernel_stub` + `STUB_AIL` re-export
  (ailang-kernel), `parse_kernel_stub` + its workspace injection
  (ailang-surface), the `answer` + two `StubT_peek__{Int,Float}`
  INTERCEPTS entries + their three emit fns (ailang-codegen). The
  (intrinsic) markers leave with the deleted source, so the
  marker<->entry bijection holds in lockstep.
- Source + tests: delete crates/ailang-kernel/src/kernel_stub/,
  kernel_stub_module_round_trips, the two stub-consumer e2e tests,
  and mono_scoped_symbol.rs (its scope-qualified-mono mechanism is
  now pinned by RawBuf's ops + the intercepts bijection).
- Fixtures: delete kernel_answer.ail, new_stubt_smoke.ail,
  peek_mono_pin_smoke.ail, and fieldtest kem_3_stub_consumer.ail
  (referenced the deleted StubT; documented a since-fixed bug).
- Pins: re-baseline both workspace-count content-pins 5 -> 4
  (workspace_pin.rs + the e2e.rs twin) and regenerate all five IR
  snapshots (400 stub-IR lines removed; no user IR changed -- the
  stub auto-injected into every build).
- Ledger: design/INDEX.md + design/models/0007 to present-state
  (raw_buf is the live ratifier; raw-buf milestone shipped, series
  pending), plus architecture-comment sweep across workspace.rs,
  mono.rs, check/codegen lib.rs, workspace_kernel.rs.

Scope decisions (orchestrator, pre-plan): the self-contained inline
serde_json check-layer fixtures in ailang-check/src/lib.rs keep their
incidental StubT/kernel_stub sample names (they construct what they
reference; not stub-ratification) -- the one permitted residual.
kem_4 fieldtest kept (uses a user NumBox ADT, comment-only edit).
hash.rs `name: "answer"` left (generic serde doc example).

Plan-gap caught at implement: the planner's verbatim edit list
under-enumerated four honesty sites; one (mono.rs:562) carried a
literal `StubT_peek__Int` -- a hard-gate symbol the verbatim list
missed, which would have failed Task 4's removal gate. Filled
(comment-only, no behaviour). Confirms the planner self-review
filter-completeness risk; the implement gate caught it.

Verification: full workspace suite green (0 failed); hard symbol gate
(STUB_AIL|parse_kernel_stub|emit_answer|emit_stubt_peek|StubT_peek__)
zero matches across crates/ examples/ design/; soft gate residual only
the kept inline fixtures; kernel crate is lib.rs + raw_buf/ only.
Regression: compile_check 24/24 stable (exit 0; uniform downward
check_ms within tol -- stub no longer parsed per compile), cross_lang
25/25, check 34/34 stable (exit 0; an earlier exit-1 on
rc_over_bump was machine-load ratio noise -- denominator bump_s got
faster, rc_s also improved -- confirmed green on re-run, not
baselined).
2026-05-30 16:07:29 +02:00
Brummel 55d76ae4a1 fix: alpha-rename shadowing binders at desugar — A2b leg (closes #43)
The last open leg of the RawBuf owned-heap drop-leak cluster #43: the
UniquenessTable shadow-name collapse. The side-table keys by
(def_name, binder_name); a fn that shadows a binder name — the shipped
`(let buf (new…) (let buf (set buf…) … (get buf)))` idiom — collapses
every shadow onto one key. The outermost binding records last (on pop)
and overwrites the inner ones, so codegen's scope-close drop gates read
the collapsed consume_count for the innermost binding, misjudge its
ownership, and suppress its drop. The owned slab leaked (live==1).

Fix: desugar now alpha-renames any binder whose authored name shadows
an enclosing binding to a fresh `<name>$<n>`, making the (def, name)
key injective per fn. The rename is on-shadow-only and uniform across
binder kinds (Let, flat-Match pattern-binders, Lam params, Loop
binders); non-shadowing binders keep their authored name, so every
existing fixture's desugared output is byte-identical (evidenced by the
full pre-existing desugar suite passing unchanged). IR-neutral: codegen
names heap by fresh SSA, never by the source binder name.

No consumer of the uniqueness table changes — they all key by name, and
the name is now a per-fn injective identity (acceptance criterion 5).
The fix is entirely internal to ailang-core::desugar; uniqueness.rs gets
only a doc-comment correction (its old text was wrong on two counts:
"last = innermost by pop-order" was backwards, and "every shipping
fixture has unique binder names" was false).

Mechanism (vs. the spec's sketch): the threaded lexical scope became a
`Scope` struct carrying `entries` keyed by each binder's EFFECTIVE
(post-rename) name and `rename` mapping authored→effective. Keying
entries by effective name is load-bearing, not cosmetic: the LetRec
capture-detection reads `free_vars_in_term` of the desugared body
(effective names) and filters by `scope.contains_key` — had entries
stayed keyed by authored name, renaming an enclosing let would have made
a captured shadowed binder invisible to capture detection (UnknownVar in
the lifted fn). `insert_fixed` records identity renames for never-renamed
binders (fn-params, LetRec name/params) so an inner renamable binder that
shadows them is still detected.

Alternatives rejected: (A) an AST id field and (B) a derived
binding-path — both solve the deeper, SEPARATE problem of persistent AST
provenance back to the authored form, which is certain to be needed
eventually but is not required here; conflating the internal naming
collision with provenance is a category error. C′ (this) reuses the
existing fresh-name machinery and touches one pass.

Verification: the three shipped Let-shadow tests
(raw_buf_{int,float,bool}_shadow_rebind_drop_balances_rc_stats) reach
live==0 (were RED at live==1); the flat-pattern differential
(flat_pat_shadow_binder_does_not_leak_more_than_alpha_renamed) reaches
its alpha-renamed control's live count (was 5 vs 3); a new desugar unit
test (shadowing_let_is_alpha_renamed) pins the rename + reference
resolution; full workspace suite green, no fixture output drift. Both
no-change consumers re-verified by hand: match_lower.rs keys by the
emitted (renamed) pattern binder, linearity builds table and lookups
from the same desugared tree.

Spec: docs/specs/0056-unique-binder-names.md.
Plan: docs/plans/0111-unique-binder-names.md.
2026-05-30 12:42:44 +02:00
Brummel 0f6108e428 fix: resolve cross-module borrow modes in the uniqueness pass (refs #43)
A2a leg of the owned-RawBuf drop-leak. Prerequisite: regression-free
and independently correct, but does NOT alone close the leak — the
three shadow_rebind RED tests (f7f4c3b) stay RED pending the A2b
shadow-collapse leg, which needs a UniquenessTable contract change and
its own spec.

The leg. The uniqueness pass infer_module runs strictly per module
(called per-Emitter from codegen lib.rs:993 with a single Module). The
module holding `main` registers only its own + builtin signatures in
`globals`; the monomorphised intrinsic signatures (RawBuf_get__Int with
param_modes=[Borrow,Implicit], etc.) live exclusively in the raw_buf
module's separate pass. So a qualified cross-module callee
`raw_buf.RawBuf_get__Int` missed `main`'s globals entirely, returned
vec![], and the walk defaulted every arg to Position::Consume —
mis-counting the borrowed `buf` arg as a consume and inflating the
binder's consume_count, which gates off the scope-close drop. This is a
latent over-conservative default affecting ANY cross-module borrow
callee, not just RawBuf.

The fix (additive, two files). infer_module is kept as a thin wrapper
over a new infer_module_with_cross(m, &cross_module_types) that threads
the workspace-flat module->def->Type table (the same module_def_ail_types
codegen already builds and the A1 emit_call rule already reads). On a
same-module globals miss, callee_arg_modes now falls back to
cross_module_callee_ty: split the callee on the last `.`, resolve
<mod>.<def> positionally against the cross-module table, and read its
Type::Fn.param_modes. Same-module + builtin lookup stays the first
resort; unqualified names and absent entries fall through to the
existing all-consume default unchanged. Modes are matched positionally,
so RawBuf.set's Own first param still counts as a consume (the
new/set-chain binders keep consume_count==1 and are not dropped —
correct, set is in-place, same slab).

Verified: full workspace green except the three intended-RED
shadow_rebind tests; ailang-check and ailang-codegen (incl.
intercepts_bijection_with_intrinsic_markers) green; A1's
raw_buf_owned_drop_balances_rc_stats still green. raw_buf_int.ail still
leaks (live=1) — that is the A2b leg, addressed next.
2026-05-30 11:19:49 +02:00
Brummel 8ac8756682 iter raw-buf.4 rawbuf-payload-termnew-desugar (DONE, drop-call deferred to .5): RawBuf works, prints 60 (refs #7)
Ships RawBuf end-to-end as a consumer of the raw-buf.3 scope-qualified
intrinsic mechanism, plus the general Term::New construction sugar.
Working subset committed; the drop-CALL ratification (no-leak) is
re-carved to raw-buf.5 (see b49f57d) — the flat drop FUNCTION ships here,
its call-insertion needs a codegen resolution mechanism.

What ships (all green):
- raw_buf kernel-tier submodule (crates/ailang-kernel/src/raw_buf/):
  RawBuf TypeDef (param-in {Int,Float,Bool}, ctor B a) + four
  (intrinsic) ops new/get/set/size. parse_raw_buf + workspace injection
  (kernel-tier auto-imported); workspace count 4 -> 5.
- 12 scope-qualified INTERCEPTS entries RawBuf_{new,get,set,size}__{Int,
  Float,Bool} + emit fns: new allocs an @ailang_rc_alloc slab
  (8-byte i64 size header + n*width element bytes), get/set
  getelementptr+load/store at offset 8 + i*width, size loads the header.
  Mechanical on the raw-buf.3 naming + bijection machinery; bijection
  green (4 markers -> 12 entries).
- Term::New desugar (crates/ailang-core/src/desugar.rs): (new T <types>
  <values>) -> (app T.new <values>), runs before check so the
  type-scoped callee flows through the raw-buf.3 scope threading to
  RawBuf_new__T; drops the NewArg::Type (element type inferred from
  use). Both codegen Term::New deferral arms removed (replaced with
  unreachable!). Ratified by new_stubt_builds_and_runs.
- Flat intrinsic-storage drop FUNCTION @drop_raw_buf_RawBuf (single
  @ailang_rc_dec on the slab), emitted for any TypeDef whose new op is
  (intrinsic)-bodied — distinguishes RawBuf (intrinsic new) from StubT
  (real-body new -> generic ADT drop).
- E2E: raw_buf_int (-> 60), raw_buf_float (-> 4.0), raw_buf_bool
  (-> 42), raw_buf_param_in_reject (param-not-in-restricted-set).

In-scope additions beyond the literal plan (both sound, ratified):
- qualify_workspace_term now normalises a monomorphic cross-module
  type-scoped callee (StubT.new) to <home>.f; without it
  new_stubt_builds_and_runs cannot build (StubT.new is monomorphic, so
  the raw-buf.3 poly-mono path mints no symbol). Same-module + polymorphic
  callees carved out.
- diagnostic-behaviour: (new T ..) missing-new-op now surfaces
  type-scoped-member-not-found (desugar runs before check, bypassing
  synth's Term::New arm); new-arg-kind-mismatch obsoleted. Two unit
  tests updated to the new behaviour. param-in reject unaffected.

The 5 .ll snapshots gained @drop_raw_buf_RawBuf (+ partial) — injecting
raw_buf emits its drop fn into every program; benign, regenerated to the
final IR. (The plan's "snapshots stay green" assumption was wrong.)

Verification (orchestrator, this session): cargo test --workspace 676
passed / 0 failed / 2 ignored. raw_buf_int_e2e prints 60; bijection,
round-trip, new_stubt, float/bool/reject all green. The raw_buf_no_leak
test is NOT in this commit — it moves to raw-buf.5 with the drop-call
resolution that makes it pass (the slab currently leaks at scope close;
tracked, fixed next iter; milestone not released until close).
2026-05-30 00:49:51 +02:00
Brummel fd37fa6489 iter raw-buf.3 typescoped-intrinsic-mechanism (DONE 2/2): scope-qualified mono symbols + bijection expansion (refs #7)
New language mechanism: a type-scoped polymorphic top-level (intrinsic)
op now mints a scope-qualified mono symbol (StubT_peek__Int, not the
colliding bare peek__Int), and the intrinsic<->intercept bijection
expresses one such polymorphic marker as its N per-param-in-element
entries. Ratified standalone on the stub via a new StubT.peek op; no
RawBuf, no Term::New, no codegen E2E this iteration (RawBuf consumes the
mechanism in raw-buf.4).

Task 1 — scope threading. Added scope: Option<String> to FreeFnCall +
MonoTarget::FreeFn + the synth free_fn_owner tuple. Populated Some(prefix)
ONLY on the type-scoped T.f resolution branch (lib.rs:3538, gated on
type_home.is_some()); None on every local / same-module / implicit-import
branch, so existing bare-resolved symbols stay byte-identical. Consumed
via a scoped_base helper at both mono-symbol mint sites (synthesise +
rewrite, which read the same MonoTarget → automatically in lockstep) and
folded into mono_target_key so a scoped op and a bare op of the same name
never dedup-collide.

Task 2 — ratifier + bijection. Added StubT.peek to the stub source;
extended workspace_intrinsic_markers with a type-scoped-poly arm that
finds the unique same-module TypeDef referenced in the fn signature and
expands over its param-in set, building the T_f__<elem> strings via the
SAME mono_symbol_n on Type::Con elems so collector and mint agree
byte-for-byte; registered StubT_peek__Int/Float entries + emit fns;
extended kernel_stub_module_round_trips to cover peek; added
mono_scoped_symbol integration test (own-param calls, no Term::New, no
codegen — asserts both scoped symbols minted and bare peek__Int absent).

Latent bug fixed inline (regression caught at the full-suite gate, RED via
the existing escape_local_demo E2E). kernel_stub is implicitly imported,
so poly_free_fn_names_for_module unconditionally added peek's bare name to
every consumer; a consumer with its OWN monomorphic peek then had its
local call mistreated as a poly-free-fn site, over-advancing the mono slot
cursor and misaligning a print target. Fix: suppress the bare
implicit-import name when the current module declares a same-name global,
mirroring synth's resolution ladder (same-module global beats
implicit-import). Applied in lockstep to both poly_free_fn name + and
constraint-count maps; dot-qualified / type-scoped spellings stay
unconditional. This was a pre-existing inconsistency between mono's
name-set and synth's resolution that peek (first implicitly-imported poly
free fn colliding with a fixture-local name) exposed.

Plan deviations (all sound): collect_con_heads omits Borrow/Own recursion
(no such Type variant — borrow/own are ParamMode on Type::Fn, verified
ast.rs:752); scope bound via the existing synthesise_mono_fn_for_free_fn
MonoTarget destructure rather than a new param; the mono-pin fixture uses
own params (borrow + peek-returns-a trips consume-while-borrowed; peek is
never instantiated so the mode is immaterial to the scope-symbol
ratification).

Verification (orchestrator, this session): cargo build --workspace clean;
cargo test --workspace 670 passed / 0 failed / 2 ignored (669 baseline +
the one new mono test). Bijection green (1 marker -> 2 entries),
round-trip green, escape_local_demo green. .ll snapshots unchanged (peek
polymorphic -> never instantiated without a call site). Existing eq__*/
compare__*/float_* symbols byte-identical (mono_hash_stability green).
2026-05-29 19:39:35 +02:00
Brummel 52ff8738b8 iter intrinsic-bodies.1-mechanism (DONE 8/8): Term::Intrinsic leaf + cross-crate wiring (refs #9)
First iteration of the intrinsic-bodies milestone. Introduces the
Form-A `(intrinsic)` body marker as a new leaf AST term and wires it
through surface, checker, codegen, and a kernel_stub ratifier. The
prelude migration + hard-lockstep pin + dead-path removal are .2.

What landed (8 tasks):

  Task 1 — Term::Intrinsic unit variant (ast.rs), tag "t":"intrinsic"
    via the enum's rename_all=lowercase. Additive: no existing fixture
    carries it, hashes bit-identical. In-core exhaustive-match arms
    (canonical/hash/visit/pretty/desugar/workspace) added as leaves.
  Task 2 — surface parse + print: (intrinsic) as a fn body-slot clause
    and a lambda positional body, mapped to/from Term::Intrinsic.
  Task 3 — cross-crate walker sweep (check/codegen/prose/ail-main):
    leaf no-op/identity arms at every no-wildcard Term match the
    compiler flagged.
  Task 4 — checker: new Env.current_module_kernel_tier flag (m.kernel
    || m.name=="prelude"), set alongside current_module. A def whose
    body is intrinsic (top-level fn OR instance-method lambda, via the
    shared is_intrinsic_body helper) is checked signature-only; an
    intrinsic body outside kernel-tier/prelude is rejected with
    intrinsic-outside-kernel-tier.
  Task 5 — codegen: an intrinsic-bodied fn routes through the existing
    try_emit_primitive_instance_body / intercepts::lookup path; if no
    intercept fired it is an internal error, never a lower_term
    fallthrough. lower_term and the synth walker get Term::Intrinsic
    internal-error arms (an intrinsic body reaching either is an
    escape bug).
  Task 6 — answer intercept (ret i64 42) registered in INTERCEPTS;
    the `answer : () -> Int` intrinsic added to STUB_AIL;
    examples/kernel_intrinsic_smoke.ail added so schema_coverage
    observes Term::Intrinsic in the examples/ corpus.
  Task 7 — E2E ratifier: examples/kernel_answer.ail calls
    kernel_stub.answer and prints 42; answer_intrinsic_builds_and_runs_printing_42
    asserts it end-to-end (source → native).
  Task 8 — design/contracts/0002-data-model.md gains the
    { "t": "intrinsic" } Term entry + fn/lam prose; form_a.md grammar
    note updated.

Verification:
  cargo test --workspace → 669 passed, 0 failed (baseline 667 +2:
    intrinsic_in_user_module_is_rejected, answer_intrinsic_builds_and_runs_printing_42).
  bench/check.py + bench/compile_check.py → 0 regressed.
  Reject E2E (subprocess ail check --json, exit 1, code
    intrinsic-outside-kernel-tier) GREEN.
  Round-trip + hash pins GREEN — Term::Intrinsic is additive, no
    existing fixture carries it, no hash moved.

Three implementation completions beyond the plan (all behaviour-
preserving, surfaced during execution):

1. The signature-only skip had to apply at the mono pass's two
   synth-on-body re-entry sites (collect_mono_targets,
   collect_residuals_ordered), not only check_fn — else an intrinsic
   body hits synth's Term::Intrinsic internal-error guard. Repaired by
   extracting the shared crate::is_intrinsic_body helper and applying
   it at all three synth-on-body paths. Not a representation surprise:
   the same signature-only treatment, more call sites.

2. The compiler-enumerated exhaustive-match set was broader than the
   plan's named grep set (the plan anticipated this and made the sweep
   compile-driven). Extra leaf arms in core desugar/workspace, check
   reuse-as + qualify_workspace_term, codegen synth_with_extras,
   ail/src/main.rs, and four test targets.

3. Fixture corrections: emit_answer needed the body-close
   (block terminator) the plan snippet omitted; kernel_answer.ail's
   main is (ret Unit)(effects IO) using (app print ...) since
   io/print_int does not exist (the plan flagged this for the
   implementer to resolve against real effect-op names).

IR snapshots (hello/sum/list/max3/ws_main.ll) refreshed: purely
additive @ail_kernel_stub_answer fn+adapter+closure, emitted into
every workspace exactly as the pre-existing @ail_kernel_stub_new
already was (kernel_stub is auto-injected; confirmed new was present
in the pre-iter hello.ll baseline). No user-fn IR changed.

The .2 iteration migrates the 18 prelude dummy bodies to (intrinsic),
upgrades registry_contains_all_legacy_arms to a source<->registry
bijection pin, and removes the dead body-lowering path.
2026-05-29 17:21:32 +02:00
Brummel a163c8c34a GREEN: pre-pass/resolver asymmetry — same-module bare + kernel-tier qualifier acceptance (closes F1, F3)
Two minimal edits in ailang-check that bring the resolver's
acceptance set into line with what prep.1's workspace pre-pass
(`prepare_workspace_for_check`) actually produces. The pre-pass
itself is unchanged — its qualification rules are correct per
spec § "Realisation mechanism — workspace pre-pass". RED tests
landed in 4d39fdc; both turn GREEN, both fieldtest fixtures
that surfaced the bugs now `ail check` clean.

F1 — same-module type-scoped call (kem_2b_min_repro.ail).
The dot-qualified `Term::Var` arm in `synth_term`
(`crates/ailang-check/src/lib.rs` ~line 3425) was
unconditionally rewriting the resolved fn signature via
`qualify_local_types`, so a call like `(app Counter.value c)`
from inside Counter's home module produced a return type
`<this>.Counter` — but the matching `Term::Ctor` arm
(~line 3644) and the pre-pass itself both leave own-module
type-names bare. The two halves of the resolver disagreed.

Fix: branch on `target_module == env.current_module` — when
true, skip the qualification (the raw type is already in the
form the rest of the resolver speaks); when false, qualify
as before. `owner_types` lookup moved inside the else-branch
since it's only consulted when qualification runs. A short
comment names the pre-pass and the sibling Term::Ctor arm so
a future reader sees the three-way symmetry.

F3 — kernel-tier qualifier acceptance (kem_3_stub_consumer.ail).
The env-builder paths `build_check_env` (~line 1653) and
`check_in_workspace` (~line 1807) force-injected only
`"prelude"` into `env.imports` / `env.module_imports`. The
loader meanwhile derives the implicit-imports list from
`modules.values().filter(|m| m.kernel)` (since prep.3) — so
`kernel_stub` flows into runtime resolution but not into
the checker's qualifier-validity check (~line 1968). Bare
`StubT` got qualified by the pre-pass to `kernel_stub.StubT`,
then bounced off the validity check as "unknown module
prefix".

Fix at both sites: keep the unconditional `"prelude"` literal
injection AND additively insert every workspace module with
`kernel: true` into the per-module import map (skip
self-injection). Idempotent for production (where prelude
also carries `kernel: true`) and preserves the
`bare_name_resolves_through_implicit_import_to_free_fn`
unit-test contract — that test deliberately constructs a
prelude module with `kernel: false` to pin the legacy
"prelude is always implicit" guarantee per se, independent
of the kernel flag. Mirrors the loader's kernel-flag filter,
making the env-builder and the loader speak the same set.

Sibling pin `crates/ailang-check/tests/env_construction_pin.rs`
(the frozen-reproduction copy of `build_check_env`'s
`module_imports` loop) updated in lockstep so it remains a
meaningful drift detector after the env-builder change. The
pin is intentionally designed to track legitimate behavioural
changes.

Verification:
  - tests::type_scoped_call_in_same_module_resolves      GREEN
  - tests::kernel_tier_module_qualifier_resolves_…       GREEN
  - examples/fieldtest/kem_2b_min_repro.ail              ail check ok
  - examples/fieldtest/kem_3_stub_consumer.ail           ail check ok
  - cargo test --workspace                               666 / 0
  (664 prior baseline + 2 RED→GREEN this iter)

Implementer notes: one re-loop on the F3 site after the first
edit replaced the legacy "prelude" literal injection wholesale
with the kernel-flag filter — that broke the unit-test contract
above. Restored the literal AND added the filter on top per the
"don't adapt tests to bugs" memory. No spec-review or
quality-review loops.

prep.1's pre-pass design (spec § "Realisation mechanism") was
correct as written — the symmetry between owner-side
`qualify_local_types` and consumer-side `prepare_workspace_for_check`
holds. What was missing was uniform resolver-side acceptance of
the qualifiers the pre-pass produces. With these two edits, the
following equivalences hold throughout the checker:

  bare T  ≡  <this-module>.T            (F1, same-module rule)
  bare T  ≡  <kernel-module>.T          (F3, kernel-tier rule)

via the loader-driven implicit-imports list that now drives
both the checker's import map and the type-validity check.
2026-05-28 19:36:36 +02:00
Brummel 4d39fdc9c0 RED: same-module type-scoped call + kernel-tier qualifier — pre-pass/resolver asymmetry (refs F1, F3)
Two failing in-source tests added to ailang-check, both pinning
the pre-pass / resolver mismatch surfaced by the fieldtest:

  tests::type_scoped_call_in_same_module_resolves
      F1: `(app Counter.value c)` from inside Counter's own home
      module must check clean. Currently fails with
      `[type-mismatch] main: type mismatch: expected
      <this>.Counter, got Counter` because the dot-qualified
      Term::Var arm at lib.rs ~3430 unconditionally calls
      qualify_local_types on the resolved fn signature even when
      target_module == env.current_module, while the matching
      local Term::Ctor branch (~3644) returns bare `Counter`.
      The two halves of the resolver disagree on whether
      `<this>.T` and bare `T` denote the same type.

  tests::kernel_tier_module_qualifier_resolves_without_explicit_import
      F3: `(con StubT (con Int))` in a consumer type signature
      must resolve without `(import kernel_stub)`. Currently
      fails with `[unknown-module] … unknown module prefix
      `kernel_stub` …` because env.imports / env.module_imports
      (built at ~1797 and ~1667) force-inject only `prelude` from
      the kernel-tier set; the pre-pass freely produces
      `kernel_stub.StubT` qualifiers that then bounce off the
      qualifier-validity check at ~1968.

Shared root: in both bugs the workspace pre-pass synthesises a
qualifier (`<this>.T` for F1, `<kernel_mod>.T` for F3) that some
downstream consumer of the resolver does not accept. The fix
surface is the resolver-acceptance side in both cases — the
pre-pass's qualification rules are correct per the spec's
§ "Realisation mechanism — workspace pre-pass". Implementation
will be two minimal edits to distinct files-and-functions
(no sweeping refactor).

GREEN side handed to implement mini-mode in the next dispatch.
2026-05-28 19:29:02 +02:00
Brummel 9339279181 iter prep.3-kernel-tier-modules (DONE 9/9): kernel-tier modules + param-in + stub crate — closes #33
Terminal iteration of the kernel-extension-mechanics milestone. Ships
the four language-level mechanisms named in the spec's § Goal:
Module.kernel + TypeDef.param-in schema, their Form-A surface,
flag-driven kernel-tier auto-injection, and generic param-in checker
enforcement with a new diagnostic.

Schema (Tasks 1+2). Module gains a `kernel: bool` field
(skip_serializing_if = is_false), TypeDef gains a
`param_in: BTreeMap<String, BTreeSet<String>>` field
(skip-if-empty, kebab-renamed to "param-in"). Both fields are
strictly additive — every pre-existing fixture's canonical-JSON hash
is bit-stable except `prelude.ail`, which intentionally gains
`(kernel)`. The struct-literal sweep covered ~104 Module sites and
~35 TypeDef sites across the workspace; the additive serde-default
covers JSON deserialise paths, only Rust struct literals broke.

Form-A surface (Tasks 3+4). `(kernel)` is a bare module-header
attribute; `(param-in (a Int Float) (b Str))` is one outer
TypeDef-body clause carrying one or more inner var-lists (OQ1
decision — mirrors `(ctors …)`, one parser arm, deterministic
BTreeMap iteration). Both round-trip Form-A → JSON → Form-A
bit-identical.

Workspace-load migration (Task 5). The hardcoded `&["prelude"]`
literal at loader.rs:108 became a `modules.values().filter(|m|
m.kernel)` derivation; `parse_prelude()` injection stays because
the prelude has no on-disk manifest in user workspaces. Prelude
now carries `(kernel)` in its source, so the new filter picks it
up automatically. Code-path migration only — observable behaviour
is identical (prelude_free_fns.rs stays green). prelude hash
re-pinned (af372f28c726f29f) with Honesty-Rule provenance comment.
WorkspaceLoadError::ReservedModuleName diagnostic prose
repurposed: any built-in kernel module name is reserved
(currently prelude + kernel_stub), not specifically prelude. CLI
mapping at main.rs updated in lockstep.

Stub crate (Task 6). New `crates/ailang-kernel-stub/` is a
zero-dependency leaf crate carrying only `pub const STUB_AIL:
&str` with the Form-A source of the kernel_stub module (one
parametric TypeDef with param-in, one ctor). The parse hop —
`parse_kernel_stub()` — lives in ailang-surface next to
parse_prelude, keeping the crate-dependency graph acyclic
(`ailang-surface → ailang-kernel-stub → ailang-core`, no
back-edge). The stub is injected unconditionally in all builds as
the ratifying fixture for the kernel-extension mechanism; future
base extensions may add more or retire the stub. Drift-pinned by
`kernel_stub_module_round_trips`.

Checker (Task 7). New `CheckError::ParamNotInRestrictedSet`
variant + code() + ctx() arms + enforcement in
`check_type_well_formed`'s Type::Con arm — generic, data-driven
from the TypeDef, mentions no specific extension type. Two
in-source tests pin both the rejection (`Str` outside `{Int,
Float}`) and the acceptance (`Int` inside) paths.

Workspace-load integration tests (Task 8). New
`workspace_kernel.rs` integration-test crate with three tests:
auto-import without explicit `(import …)` declaration, two
kernel-tier modules co-load, explicit-import-overrides-auto-
import precedence preserved. Loader is import-tree-only so the
auto-import tests use a bridge module that brings the kernel
module into the workspace via the import graph — docstring
captures the reachability nuance for future readers.

Doc-state transitions (Task 9). INDEX.md kernel-extensions row
annotation transitions from "design accepted 2026-05-28; impl in
progress" to "mechanisms milestone closed 2026-05-28; raw-buf and
series milestones pending". Whitepaper STATUS + auto-import +
param-in sections transitioned forward→present for shipped
mechanisms; forward-tense survives only in sections describing
the still-pending raw-buf/series milestones (per Honesty-Rule).
data-model contract gains anchor blocks for both new schema
fields.

Side-effect: every binary's IR snapshot now contains ~52 lines
for `drop_kernel_stub_StubT` because the stub is auto-injected
into every workspace load. Snapshots refreshed; e2e expects 4
modules per workspace (prelude + kernel_stub + entry + zero or
more user modules) instead of the previous 3.

Plan defects scrubbed in the implementation (folded back into
the planner template via the planner's self-review checklist
next time): Task 4 sample test src used fictional
`(ctors (MkT a))` list form (project grammar is per-`(ctor MkT
a)`); Task 6 original wiring would have created a cycle
ailang-surface → ailang-kernel-stub → ailang-surface (inverted —
stub crate is zero-dep, parse hop lives in surface); Task 7 in-
source tests referenced a fictional `check_type_in_module`
helper (used the existing Workspace + check_workspace
convention); Task 8 first integration test expected loader to
auto-load kernel modules from disk (loader is import-tree-only;
tests use a bridge module).

Concern-5 fix folded in pre-commit: workspace.rs ReservedModuleName
doc-prose initially said "in test/dev builds" for kernel_stub —
but stub is unconditionally injected in all builds. Doc copy
tightened to present-state per Honesty-Rule.

Stats: 0 spec-review-loops, 0 quality-review-loops, 2 sweep-script
retries on Task 2 (brace-depth bug on nested vec![Ctor{…}],
recovered via per-file checkout + rewritten anchor-on-existing-
field sweep), 1 e2e-snapshot refresh on Task 6.
2026-05-28 18:43:42 +02:00
Brummel 078c39a76a iter prep.2-term-new-construct (DONE 4/4): Term::New AST + Form-A surface + checker + drift — closes #32
Second iteration of the kernel-extension-mechanics milestone. Ships
the `new` Form-A keyword + `Term::New { type_name, args: Vec<NewArg> }`
AST variant + `NewArg::Type|Value` enum end-to-end through schema /
surface / checker, with two new diagnostics
(`NewTypeNotConstructible`, `NewArgKindMismatch`), a new arm in
prep.1's workspace-wide normalisation pre-pass `qualify_workspace_term`
that rewrites bare `Term::New.type_name` to qualified form
(symmetric to the existing `Term::Ctor` arm), and the data-model.md
+ form_a.md anchor additions. Codegen out of scope per spec; codegen
sites get `CodegenError::Internal` arms naming the raw-buf milestone
as the carrier.

Verification:

- `cargo test --workspace`: 654 tests passing, 0 failed.
- 3 new in-source checker tests pin the elaboration paths:
  `new_resolves_via_type_scope` (the spec's worked Counter example
  checks cleanly), `new_type_not_constructible` (missing `new` def
  in home module fires the new diagnostic), `new_arg_kind_mismatch_value_where_type`
  (kind-mismatch detection).
- 2 new schema-drift pins (`term_new_round_trips`,
  `term_new_type_arg_round_trips`) ratify the JSON byte shape:
  `{"t": "new", "type": "<TypeName>", "args": [{"kind": "type"|"value",
  "value": ...}]}`.
- 1 new surface round-trip pin exercises mixed-kind args through
  Form-A → JSON → Form-A.
- 44+ exhaustive Term-match sites across 24 files extended with
  `Term::New` arms — workspace-wide cargo build clean.

Concerns documented inline:

- `crates/ailang-core/tests/schema_coverage.rs` deliberately does
  NOT register `VariantTag::TermNew` in the `EXPECTED_VARIANTS`
  set. The coverage test asserts every declared variant is
  observed in the .ail fixture corpus; no .ail fixture in the
  current tree emits `"t": "new"` (codegen-runnable Term::New
  programs require the raw-buf milestone's plugin registry).
  Registering would fail the coverage check. The `visit_term` arm
  IS extended (compile-forced); only the enum registration is
  deferred. Inline rationale in the source. Future milestone that
  ships a Term::New fixture extends both sides.
- `crates/ailang-surface/src/print.rs` `write_term` Term::New arm
  was added in Task 1 (not Task 2 as planned), because without it
  ailang-core's tests fail to compile (the surface crate is in
  the dependency graph of ailang-core's test binaries). Task 2's
  round-trip pin verified the arm's correctness.
- Task 3 (synth elaboration) needed one implementer re-loop: the
  first attempt over-qualified within-module type-references via
  `qualify_local_types` on `new`'s signature when the home module
  was the calling module itself. Fixed by skipping qualification
  when `home_module == env.current_module`.

Architectural composition with prep.1: `Term::New` joins
`Term::Ctor` as a `type_name`-bearing site that goes through
`qualify_workspace_term`'s bare→qualified rewrite before the
checker sees it. The checker's `synth` arm for `Term::New`
therefore receives an already-qualified `type_name` (or a local
bare name for same-module construction).

Milestone status: kernel-extension-mechanics (Gitea #6) advances
2/3 iters. Next: prep.3 (kernel-tier modules + param-in), issue #33.
2026-05-28 15:31:13 +02:00
Brummel b586999e81 iter prep.1-type-scoped-namespacing (DONE 5/5): TypeDef-first resolution + workspace pre-pass — closes #31
First iteration of the kernel-extension-mechanics milestone. Ships
the type-scoped `<TypeName>.<member>` resolution path as the
canonical form for type-associated operations, narrows the
`BareCrossModuleTypeRef` / `BadCrossModuleTypeRef` diagnostics from
"bare = strictly local" to "bare = in-scope by any path", migrates
12 std-library example fixtures, and introduces a workspace-wide
normalisation pre-pass `prepare_workspace_for_check` shared between
`check_workspace` and `monomorphise_workspace`.

Architectural discovery during implementation: the plan covered the
`Term::Var` dot-qualified resolver layer plus the workspace
validator's bare-name acceptance, but the migration of bare-form
fixtures exposed five sites where bare vs. qualified type-names
needed symmetric treatment — `Term::Ctor` resolution, `Type::Con`
well-formedness, mono's poly-free-fn name/constraint-count
enumeration, codegen's `lookup_ctor_by_type` bare-name path, and
the upstream desugar-then-qualify composition. Rather than
scattering TypeDef-first ladders across each site, the implementer
centralised the work into one pre-pass that walks every consumer
module's `Type::Con.name` and `Term::Ctor.type_name`, rewriting
bare cross-module references to their qualified `<home>.<Type>`
form. This is symmetric to the pre-existing `qualify_local_types`
(owner-side); the new pre-pass is the consumer-side mirror.
Downstream passes see qualified Types regardless of authoring form.
The TypeDef-first ladder still lives in `synth`'s `Term::Var` arm
because `<TypeName>.<member>` is term-position-only — `Maybe.from_maybe`
is a Var, not a Type expression, and the pre-pass does not rewrite
Var names.

Alternatives considered:

(a) Add TypeDef-first ladder at every resolution site separately
    (the plan's implicit assumption). Rejected: O(N) extension
    sites, each carrying the same workspace-walking logic; the
    pre-pass version is O(1) — one pass, every downstream consumer
    benefits.
(b) BLOCKED + spec re-brainstorm. Rejected: the architecture
    extension is consistent with prep.1's thesis (bare type-name
    resolves to the workspace-wide TypeDef) and forward-compatible
    with prep.2 (Term::New.type_name falls under the same rewrite)
    and prep.3 (kernel-tier TypeDefs enter the workspace map
    automatically). No design regression to bounce back over.

Spec updated to document the realisation mechanism honestly: the
"Realisation mechanism — workspace pre-pass" subsection clarifies
that the resolver-level semantics described in "Implementation
shape" are the user-facing contract, and the actual code path is
the pre-pass.

Verification:

- `cargo test --workspace`: ALL GREEN. 87 e2e + every crate's unit
  + integration tests pass with no regressions.
- Three NEW in-source tests pin Task 1's resolver paths:
  `type_scoped_member_resolves`, `type_scoped_member_not_found`,
  `type_scoped_receiver_not_a_type`.
- One NEW workspace test pins the narrowed validator:
  `ct1_validator_accepts_bare_with_explicit_import`.
- One renamed-and-flipped existing test:
  `ct1_validator_rejects_bare_xmod_with_import_candidate` →
  `ct1_validator_accepts_bare_xmod_with_import_candidate` (the
  bare-with-import path is now ACCEPTED).
- One NEW companion test for the workspace-wide ctor lookup:
  `ct2_term_ctor_bare_cross_module_via_workspace_resolves`.
- Two pre-existing tests' assertions updated for the new error
  wording: `ct1_check_cli::check_human_mode_emits_actionable_message_to_stderr`
  and `crates/ailang-check/tests/workspace.rs::unknown_module_prefix_is_reported`.
- 12 migrated `.ail` fixtures verified via the existing e2e
  suite (each fixture is the test runner's target for an existing
  `build_and_run` assertion).
- Negative fixture `ct_2_bare_cross_module.ail` semantically
  preserved: dropped its `(import std_maybe)` so bare `Maybe` is
  out-of-scope under the narrowed rule and still fires
  `BareCrossModuleTypeRef`.

Concerns:

- The pre-pass introduces a new architectural layer (consumer-side
  qualification) that the spec did not originally anticipate. Spec
  amendment in this commit documents the layer. Future iterations
  reference `prepare_workspace_for_check` as established
  infrastructure.
- `examples/test_ct1_bare_xmod_rejected.ail.json` switched its
  offending name from bare `Ordering` (which under the prep.1
  semantics may now resolve via implicit prelude) to a still-
  unresolvable `Mystery_Type`. The CLI test's intent (assert that
  a human-mode `ail check` exits non-zero on a still-RED case) is
  preserved.

Milestone status: kernel-extension-mechanics (Gitea #6) advances
1/3 iters. Next: prep.2 (`Term::New` construct) issue #32.
2026-05-28 14:43:03 +02:00
Brummel 832375f2ac convention: counter-prefix file naming across docs/specs/, docs/plans/, design/contracts/, design/models/
All 176 files in the four accumulating directories now use a
zero-padded 4-digit counter prefix that reflects creation order
(`NNNN-slug.md`). The counter is assigned per directory in strict
git-log creation order; ties broken alphabetically by original name.
The old `YYYY-MM-DD-` prefix on docs/specs/ and docs/plans/ files is
dropped — the date is recoverable from git log and the counter
carries the ordering.

A file's counter is stable for the life of the file: never reassigned,
never reused, never compacted. Deleted files retire their counter;
subsequent files do not fill the gap. This is the property that lets
cross-references stay literal — refs use the full filename including
the counter (`design/contracts/0007-honesty-rule.md`) so they grep
cleanly and resolve directly without a glob step.

313 cross-references updated across .md/.rs/.toml/.c/.json files
(test pins, include_str! paths, design-INDEX entries, baseline notes,
runtime C comments, inter-contract markdown links incl. bare basename
and `../models/foo.md` forms).

CLAUDE.md gets a new "File-naming convention" section spelling out
the rule and rationale. skills/brainstorm/SKILL.md and
skills/planner/SKILL.md updated so new spec/plan creation produces
counter-prefixed names from the start.

The full test suite (cargo test --workspace) passes.
2026-05-28 13:31:31 +02:00
Brummel 4fc65ccb99 iter schema-camelcase-fix.1 (DONE 4/4): paramTypes/retType → param-types/ret-type — closes #30
`Term::Lam`'s two camelCase JSON tags become kebab-case, matching
the convention every other compound-key tag in the AST schema
already follows. After this iter the canonical JSON has zero
camelCase outliers.

## Schema swap (atomic, Task 2)

- `crates/ailang-core/src/ast.rs:492,494` — two
  `#[serde(rename)]` strings: `"paramTypes" → "param-types"`,
  `"retType" → "ret-type"`. Rust field names unchanged.
- `crates/ailang-core/src/workspace.rs:1925-1926` — in-source
  JSON literal in the `ct1_validator_walks_lam_embedded_types`
  test.
- `design/contracts/data-model.md:142-147` — fenced JSON block
  in the canonical data-model contract. Honesty-Rule touch-point:
  the contract document must describe the actual present-state
  schema.
- `examples/test_loop_binder_captured_by_lambda.ail.json` and
  `experiments/2026-05-12-cross-model-authoring/master/examples/fn_with_lambda.ail.json`
  — the two `.ail.json` fixtures whose canonical-JSON embeds
  the renamed tags.

The five files moved together within one task because `Term::Lam`
has no `#[serde(default)]` on `param_tys` / `ret_ty` — a
renamed-away key is a hard deserialise error. Splitting the swap
would have left the workspace untestable mid-step.

## RED → GREEN pin (Tasks 1, 2)

`crates/ailang-core/tests/design_schema_drift.rs` gains
`lam_serialises_with_kebab_keys`: pins that `serde_json::to_value(&Term::Lam{...})`
emits `"param-types"` / `"ret-type"` AND does not emit the old
camelCase keys. Companion: the existing
`design_md_anchors_every_term_variant` test now also asserts the
kebab anchors appear inside `data-model.md`'s `lam` fenced block.
Both confirmed RED on entry, GREEN after Task 2.

## Rustdoc honesty pass (Task 3)

Three pure-prose edits keep production rustdoc consistent with
the new schema vocabulary: `crates/ailang-core/src/ast.rs:8` (the
module-level rename enumeration), `crates/ailang-surface/src/parse.rs:81`
(prose mention of `lam`'s carry), `crates/ailang-check/src/lib.rs:1707`
(InstanceMethod routing helper rustdoc). No compile or test
consequence — Honesty-Rule maintenance.

## Plan-pseudo-vs-reality finding: under-audited hash blast radius

The brainstorm spec audited `crates/ailang-core/tests/hash_pin.rs`
exhaustively (5 pinned modules, zero `(lam ...)` occurrences,
"no hash refresh required"). It missed
`crates/ailang-surface/tests/prelude_module_hash_pin.rs` — a
separate hash-pin file in a different crate that pins `prelude.ail`,
which contains 11 `(lam ...)` forms. The prelude module hash
drifted (`6d0577ff0d4e50ac` → `562a03fc57e7e017`); the implementer
refreshed it with a Honesty-Rule provenance comment matching the
precedent set in commit `26fb345`. Form-A is unchanged — only the
canonical-JSON byte stream differs, which is exactly what the
rename targets. The spec-side learning is: schema-rename
brainstorms must walk *every* test crate for hash-pin files, not
just the home crate of the AST.

## Why this shape, and not the alternatives

- *`params-ty` / `ret-ty` (Rust-field-name vibe)* — rejected. The
  AST JSON schema follows its own kebab/single-word convention,
  not Rust field names. The other multi-word tag (`reuse-as`) is
  kebab; abbreviating `params-ty` mixes singular+plural and has
  no precedent.
- *Inline typed params as a sub-tag* (e.g. `params: [{name, type}, ...]`)
  — rejected. Stronger semantic locality, but it changes schema
  topology rather than tag spelling. Out of scope for a camelCase
  correction; would have re-pinned far more than this milestone.
- *Bundle with #27 (arith-rename)* — rejected. #27 carries four
  open brainstorm questions (mod vs rem, neg vs sub 0, Num class,
  deprecation window) and is structurally a separate milestone.
  Each gets one re-pin wave with its own rationale; no churn
  saving from bundling.

## Honest call on the feature-acceptance gate

Clause 1 (LLM author naturally uses the new form) is the weakest
of the three. Direct empirical evidence is absent — the 2026-05-21
naming-A/B run measured a different axis. The argument is
indirect: a future LLM author generalises from the rest of the
schema ("compound keys are kebab"), and the two camelCase
outliers are precisely the sites where that generalisation
diverged from reality. Clause 2 (redundancy reduction) and
Clause 3 (no semantic surface touched) are direct.

## Forbidden touches verified untouched

`docs/plans/*.md` historic plans (which embed old tag names in
example JSON), `experiments/2026-05-12-cross-model-authoring/master/spec.md`,
`experiments/.../rendered/*.md`, and `experiments/.../runs/**` —
all left as frozen historical artefacts per Honesty-Rule
analogue (describe state at time of writing, not present state).
Verified via `git diff --name-only HEAD` (Task 4 Step 4).

## Verification

- `cargo test --workspace`: all test groups OK, 0 failed,
  2 ignored (pre-existing).
- `cargo test -p ailang-surface --test round_trip`: GREEN
  (Form-A unchanged invariant).
- New schema-shape pin and the extended data-model anchor walk:
  GREEN after Task 2.
- Negative grep across `crates/`, `examples/`, `design/`,
  `runtime/`: the only remaining `paramTypes` / `retType`
  occurrences in checked-in code are the load-bearing
  negative-assertion strings inside the new pin (intentional —
  they are what makes the pin RED-able on regression).
- Stats: `bench/orchestrator-stats/2026-05-21-iter-schema-camelcase-fix.json`
  — 4/4 tasks DONE, no re-loops, no review-loops.

closes #30
2026-05-21 12:57:06 +02:00
Brummel 5170b6abd1 iter operator-routing-eq-ord.1 (DONE 13/13): drop comparator builtins, route through Eq/Ord
Closes Gitea #1. Realises the "P2 follow-up" called out in
examples/prelude.ail:9 — removes the surface comparator names
`==` / `!=` / `<` / `<=` / `>` / `>=` from the language entirely,
routes the LLM-author's `(app eq …)` / `(app compare …)` /
`(app ne|lt|le|gt|ge …)` through prelude.Eq / prelude.Ord class-
dispatch, ships six named Float-comparison fns
(`float_eq`/`float_ne`/`float_lt`/`float_le`/`float_gt`/`float_ge`)
so Float keeps comparability without an Eq/Ord instance, and emits
primitive instance bodies with `alwaysinline` so the -O0 IR shape
stays at one instruction per comparison.

Plan-task journal (13 tasks, single atomic iter per Approach A):

  Task 1 — Bootstrap: 4 new fixtures (eq_user_adt_smoke.ail,
    eq_float_must_fail.ail, float_compare_smoke.ail,
    operator_unbound_check.ail) + 5 new E2E/pin tests as RED
    starting state. All 5 confirmed RED at start: north-star
    fixed `NoInstance Eq Unit` (preserved by Unit-eq opening line
    intentionally added in plan-self-review); float_compare unknown
    `float_eq`; operator-name typechecked (== still polymorphic);
    must-fail diagnostic lacked `float_eq`; alwaysinline absent
    from IR.

  Task 2 — Codegen alwaysinline + intercept arms: introduced
    `intercept_emit_wants_alwaysinline` allowlist + appended
    ` alwaysinline` between `)` and `{` of the `define` line in
    `emit_fn`; added 9 new intercept arms to
    `try_emit_primitive_instance_body` — `eq__Int`/`eq__Bool`/
    `eq__Unit` + the six `float_*` arms.

  Task 3 — Prelude reshape: `instance Eq Unit` added; Eq Int/Bool
    bodies become placeholder-`false` (intercept overrides); six
    `float_*` free fns added; line-9 P2-follow-up comment removed.
    Lockstep hash re-pins: prelude_module_hash_pin (3abe0d3fa3c11c99
    → new), mono_hash_stability six body-hash literals
    (eq__Int/Bool/Str + compare__Int/Bool/Str all shifted because
    placeholder body changes the canonical hash). IR-snapshot
    regen (hello/list/max3/sum/ws_main) rolled forward into this
    task at orchestrator's pragmatic call — prelude shift forces
    the snapshots immediately.

  Task 4 — Fixture migration: 58 .ail fixtures rewritten
    (`(app == …)` → `(app eq …)`, etc.; Float-typed operand sites
    to `(app float_eq …)` / `(app float_lt …)`). eq_ord_user_adt.ail:21
    inner `==` → `eq` migration with lockstep eq_ord_e2e.rs:134
    body-hash re-pin (3c4cf040cb4e8bb2 → new). Two prose snapshots
    accepted; deps test + 5 hash_pin literals updated as cascading
    consequences.

  Task 5 — Test-scaffold migration: all 8 in-source
    `#[cfg(test)] mod tests` AST-literal sites threaded
    (desugar.rs:2414, check/lib.rs:5656/6092/6220, codegen/lib.rs
    sites). 7 obsolete in-source tests deleted (5 eq_typechecks +
    2 lower_eq ADT/Fn rejection — coverage moves to E2E
    eq_user_adt_smoke + eq_float_must_fail). 2 additional letrec
    tests deleted (single-module check env can't resolve eq/ge
    without prelude auto-import; covered by workspace E2E).

  Task 6 — Lit-pattern desugar: build_eq emits
    `Term::Var { name: "eq" }` instead of `"=="` at desugar.rs:1109;
    doc-comment rewritten to describe class-dispatch.

  Task 7 — Dead-machinery deletion sweep (compile-gated): typchecker
    builtins (install + list comparator entries deleted); codegen
    builtin_binop_typed (10 comparator arms deleted from synth.rs,
    table reduced to arithmetic core); lower_eq fn entirely
    deleted; `==` short-circuit in lower_app deleted;
    `is_static_callee` `==` clause deleted;
    `is_arithmetic_or_comparison_op` renamed to `is_arithmetic_op`
    + caller-update at codegen/lib.rs:2152 + :2529. Dead
    `poly_a_a_to_bool` helpers also removed. Workspace build green
    after compile gate — every caller of the deleted surface was
    migrated by Tasks 4-6.

  Task 8 — Float-aware NoInstance diagnostic: check/lib.rs:856-880
    addendum extended to name `float_eq` / `float_lt` as the
    explicit alternative for Eq/Ord at Float;
    eq_float_noinstance.rs:32-44 assertion extended.

  Task 9 — IR snapshot regen: subsumed by Task 3 (prelude shift
    forced immediate snapshot regen; deferring to Task 9 would
    have left the workspace red between tasks).

  Task 10 — Prose-projection cleanup: 6 comparator arms deleted
    from binop_info; 3 in-source mod-tests updated/deleted
    (comparator-infix rendering would be dishonest now that the
    operators are no longer language identifiers).

  Task 11 — Contract updates: 5 design files rewritten to the
    class-dispatch present —
      float-semantics.md (arithmetic guarantees retained on
        +/-/*/; comparison guarantees transferred from ==/!=/<
        to float_eq/float_ne/float_lt/etc.);
      prelude-classes.md (Eq Unit added to instance list;
        new paragraph on six float_* fns; Float-no-Eq/Ord clause
        gains `→ use float_eq` cross-reference);
      str-abi.md (clause "REMAIN primitive operators" rewritten
        to describe class-method dispatch);
      scope-boundaries.md (multiple operator-name and
        Pattern::Lit-desugar clauses rewritten);
      authoring-surface.md (==, <= dropped from operator-example
        list).

  Task 12 — Initial acceptance gate: workspace 638/0 GREEN;
    bench/compile_check + cross_lang 0 regressed; bench/check.py
    flagged 4 regressions on bench_closure_chain (+29% bump_s,
    +47% rc_s, +29% bump_rss_kb, +48% rc_rss_kb). Orchestrator
    initially classified as DONE-with-concerns; Boss reclassified
    as PARTIAL-via-acceptance-#8-fail after independent re-run,
    extended iter scope to Task 13.

  Task 13 — Direct icmp intercept arms (Boss-extension):
    try_emit_primitive_instance_body gains direct-icmp arms for
    lt__Int / le__Int / gt__Int / ge__Int / ne__Int, bypassing
    the compare__Int → Ordering → match indirection that allocated
    one Ordering ctor per call in tight loops. Each new arm
    inherits `alwaysinline` via the existing allowlist (extended
    accordingly). New IR pin test `ord_int_intercept_ir_pin.rs`
    + smoke fixture `ord_int_intercept_smoke.ail` ratify the
    optimization — opt -O2 -S confirms zero `call
    @ail_prelude_lt__Int` in optimized IR; the icmp folds directly
    at every use site. Bool variants (lt__Bool/etc.) deliberately
    NOT added — no bench/example calls Ord at Bool; spec-extension
    permits skipping if unreachable at bench level. Family can be
    extended symmetrically when first Bool-ordered perf workload
    appears.

Bench-gate post-Task-13: bench_closure_chain bump_s -6.05%,
rc_s -2.67%, bump_rss_kb -0.77%, rc_rss_kb +0.46% — all four
previously-regressed metrics back inside tolerance. Full bench
corpus: 36 metrics, 0 regressed, 0 improved beyond tolerance,
36 stable. bench/check.py exit 0 ✓; bench/compile_check.py exit
0 ✓; bench/cross_lang.py exit 0 ✓.

Workspace: 640 passed, 0 failed across all binaries (delta vs.
milestone start: +5 new E2E/pin tests added in Task 1 + 1 IR pin
added in Task 13 − 9 in-source mod tests deleted as obsolete net
≈ −3). The eq_user_adt_smoke fixture's Unit-opening line was
the deliberate RED-first device added in planner self-review so
the north-star wouldn't accidentally GREEN at start (user-ADT-Eq
on Point with hand-written instance was already operable today;
the milestone's actual delivery is operator-name death + Eq Unit
+ Float-named-fns + cleanup of the two-pathy primitive
comparator machinery).

Net delta: 96 files changed, 1760 insertions, 1101 deletions;
12 net-new files (6 new fixtures, 5 new E2E/pin tests, 1 stats
file). main passes-test-count: 640 (was 633 pre-iter, accounting
for the deletions).

Spec-vs-acceptance addendum: spec §Testing strategy anticipated
the bench-gate-regression case with two recovery paths
(`alwaysinline` investigation or "spec needs revisiting toward α").
Task 13 is the third path — direct intercept arms for `lt`/etc.
that bypass the compare→match path entirely. The spec's contingency
clause was thus generous enough to absorb Task 13 without spec
revision, but a future iter that hits a class-method primitive
where the body shape introduces a similar codegen cost (Ordering
allocation, RC tax, deferred-init) should expect a parallel
extension. The pattern is "primitive instance whose canonical body
indirects through other class methods that allocate" → add a
direct-emit intercept arm + alwaysinline + IR-shape pin.

Concerns absorbed:
  - Codegen lower_app / resolve_top_level_fn gained a
    prelude-fallback lookup so bare monomorphic prelude fns
    (`float_eq` etc.) resolve from non-prelude modules without
    explicit `prelude.float_eq` qualifier. Mirrors the
    typechecker's implicit prelude import — not in plan but
    necessary infra for the named-fn surface to be callable.
  - Recon's "≈10 fixtures" estimate was 6× too low — 58 actual.
    Mechanical migration; no design impact.
  - Recon caught 4 in-source AST-literal sites the spec missed
    (lib.rs:5656 `>=` site + three codegen/lib.rs sites);
    Task 5 covered all.
  - Recon caught 2 contract files outside the spec's update set
    that directly contradicted the milestone (str-abi.md +
    scope-boundaries.md "REMAIN primitive operators" /
    "Pattern::Lit desugar to ==" clauses); Task 11 covered all 5.

Stats file:
`bench/orchestrator-stats/2026-05-21-iter-operator-routing-eq-ord.1.json`.

closes #1
2026-05-21 01:16:21 +02:00
Brummel 99df14c792 workflow: scrub residual JOURNAL/journal refs missed in the first sweep
A re-grep found 15 live references (excluding docs/specs/ and
docs/plans/, which stay historical) the previous two commits
missed — all in source comments, doctests, bench helpers, and one
agent file.

Per-file:
- crates/ail/src/main.rs: typeclass-coherence diagnostic comment
  pointed at "the JOURNAL queue's wording" — points at
  design/contracts/typeclasses.md alone.
- crates/ailang-prose/src/lib.rs: `//!` header referred to
  docs/JOURNAL.md "Pinned: human-readable prose surface" —
  retargeted to design/contracts/authoring-surface.md.
- crates/ailang-check/src/lib.rs: bugfix tag + "see iter
  method-dispatch-refactor journal" prose collapsed to a clean
  rationale paragraph; the canonical shape is stated inline.
- crates/ailang-surface/tests/prelude_decouple_carve_out_pin.rs:
  "(d) record the rationale in a per-iter journal" →
  "(d) record the rationale in the commit body".
- crates/ailang-surface/tests/prelude_module_hash_pin.rs: header
  collapsed (pd.2/pd.3 milestone narrative dropped — the test's
  purpose is self-evident from its body); both "per-iter journal"
  drift-instructions point at the commit body.
- runtime/rc.c: "bench numbers in JOURNAL 18f.2" →
  "original profiling bench numbers".
- bench/run.sh: two "JOURNAL entry" comments → "commit body".
- bench/architect_sweeps.sh: header rewritten (cross-ref to the
  design-md-consolidation milestone commits, not a JOURNAL entry).
  Sweep-4 extended with two new anti-regrowth phrases
  ("see the per-iter journal", "in a per-iter journal") so journal
  prose can't grow back into design/contracts/ silently.
- skills/audit/agents/ailang-architect.md: "unlike a journal it
  lives on main" → "since it lives on main".
- ail-embed/src/bin/timeshard_runner.rs: "records it in the
  close-out journal" → "prints it to stderr".
- ail-embed/tests/timeshard.rs: two "journal-only friction timing"
  → "stderr-only friction timing".

Verification (after the edit):
- `grep -rin '\bjournal\b'` against live tree returns exactly two
  hits: the Sweep-4 regex itself (intentional — TABU phrases that
  prevent regrowth) and the PHRASES array in design_index_pin.rs
  (intentional — the same regrowth guard at test level). Both are
  load-bearing negative assertions.
- `bash bench/architect_sweeps.sh` exits 0 ("All five sweeps
  clean") — no design/-side regrowth.
- `cargo build --workspace` green; `cargo test --workspace` green.
2026-05-20 11:32:37 +02:00
Brummel 54f0ced148 workflow: delete docs/journals/ and docs/journal-archive.md
Strict application of the "Future-Use, not Verlauf" criterion to the
two remaining journal artefacts:

- `docs/journals/` (110 files): the per-iter and audit journals from
  2026-05-11 onward. Pure history; no live reader after the previous
  sweep. Entire directory removed.
- `docs/journals/2026-05-19-design-decision-records.md`: the one file
  that had live readers (`docs_honesty_pin.rs:108`, `parse.rs:80`,
  `duplicate_ctor_pin.rs:8`, three roadmap.md mentions) and was framed
  as a "relitigation guard". On re-examination its three asserted
  pinned phrases ("Regions were considered and rejected", the
  "demands annotations *because*" rationale, the prose-render
  placeholder statement) are rationale-prose, not load-bearing
  invariants — the test pinned itself, not a system property. Any
  Decision that still holds lives in the code, `design/contracts/`,
  or `design/models/`. Removed with the rest.
- `docs/journal-archive.md` (pre-2026-05-11 history): content-frozen
  long-tail history with no live reader. Removed; if anyone ever
  needs the pre-cutoff rationale they can `git log --before=2026-05-11
  --grep=<keyword>`.

Live-file consequences:
- `docs_honesty_pin.rs` `design_md_present_tense_anchors_present`:
  the three `records.*` assertions and the `read("docs/journals/…")`
  are dropped; the contract/model anchor pins remain.
- `duplicate_ctor_pin.rs`: the "why-two-overlays rationale lives in
  docs/journals/…" comment is replaced with the rationale inline.
- `parse.rs`: the "form-refinement rationale lives in docs/journals/…"
  comment is dropped (the rule body already states the refinement).
- `roadmap.md`: the decision-records mention in the DESIGN.md →
  design/ entry's body is dropped; the journal-archive.md `context:`
  pointers across ~12 closed entries are either rephrased to point
  at the relevant iter/audit (no path), or simplified to a one-line
  comment when the iter name alone carries the story.
- `CLAUDE.md` Roles section: the `docs/journal-archive.md` slot is
  removed; vocabulary note rephrased.
- `design/INDEX.md`: the Docs bullet drops `journal-archive.md`.
- `skills/README.md` bootstrap-rationale pointer rephrased.

`docs/specs/` and `docs/plans/` (per-milestone specs and per-iteration
plans) are unaffected — they remain the structured-design artefacts
they were before this sweep.

Workspace builds, full test suite green.
2026-05-20 11:25:15 +02:00
Brummel 8e586f493f workflow: replace per-iter journal system with git log + BLOCKED.md
The per-iter journal under docs/journals/ duplicated the iter commit
body's substance and accumulated as Verlauf-Doku with no Future-Use.
Sweep across all live control documents: CLAUDE.md, the 7 SKILL.md
files, the 11 agent files, design/INDEX.md and the contracts/models
that referenced journals, docs/roadmap.md, and the handful of source
comments + tests that pointed at journal files for rationale.

Mechanism changes:
- Standing-reading-lists in every agent now read `git log -N --format=full`
  for recent project state, never per-iter journal files. The architect
  reads `git log <prev-milestone-close>..HEAD --format=full` for audit
  scope.
- implement-orchestrator no longer writes a journal file. DONE outcomes
  emit just code + stats; the end-report is the per-task summary the
  Boss uses to write the commit body. PARTIAL/BLOCKED outcomes emit
  BLOCKED.md at the repo root — uncommitted by convention, Boss removes
  on repair or discard. New iron-law line + four-rationalisation row
  + red-flag bullet codify it.
- audit ratify mechanic: --update-baseline is now paired with an explicit
  ratify paragraph in the audit-close commit body, not a separate
  JOURNAL ratify entry.
- design/contracts/honesty-rule.md: "history and rationale lives in
  docs/journals/" → "lives in git log (iter and audit commit bodies)".
  Pinned phrase preserved verbatim.
- CLAUDE.md "Roles of …" section reframed: design/, git log,
  journal-archive.md (content-frozen), roadmap.md, specs/, plans/.
  No docs/journals/ slot anymore.
- roadmap.md context-lines that pointed at per-iter journals are
  dropped where the spec/commit already carries the rationale, or
  rephrased to "shipped in the <iter> iter commit" / "docs/journal-
  archive.md (<date> entry)" for pre-2026-05-11 references.

What stays (this commit):
- docs/journals/ directory and contents are NOT touched. Removing the
  contents is a separate follow-up.
- docs/journals/2026-05-19-design-decision-records.md still has live
  readers (docs_honesty_pin.rs Z 108 + parse.rs + duplicate_ctor_pin.rs
  + 3 roadmap mentions) — also follow-up.
- docs/journal-archive.md still exists; its self-pointer header has
  been updated to drop the "see docs/journals/INDEX.md" mention.

Workspace builds, full test suite green.
2026-05-20 11:21:37 +02:00
Brummel ac4d545570 source: scrub iter-code / Decision-N residue from inline comments
Follow-up to bcd4181: the remaining ~530 inline `//` and `///`
comments still carrying opaque shorthand are now reformulated to
their content phrases. The only surviving `iter-<code>` reference
in source is the literal filename
`docs/journals/2026-05-13-iter-mq.3.md` (a real journal file).

Sweep covered:
  - `// Iter X.Y: <text>` prefixes (Iter 13a / 14a / 14e / 15g-aux /
    16b.x / 16d / 16e / 18b / 18c.x / 18d.x / 18e / 18g.x / 19a /
    19a.1 / 19b / 20a / 20f / 22-floats.x / 22b.x / 22c / 23.x /
    24.1 / cli-diag-human / hs.x / str-concat / etc.) — fully
    removed; the descriptive text that followed each prefix stays.
  - `// (Decision N)` and `per Decision N` and `Decision N axis 3` —
    replaced with the content phrase plus the relevant contract
    file (`design/contracts/tail-calls.md` for Decision 8,
    `design/contracts/memory-model.md` for Decision 10,
    `design/contracts/typeclasses.md` and `design/models/typeclasses.md`
    for Decision 11, `design/contracts/authoring-surface.md` for
    Decision 6, "the transitional dual-allocator" for Decision 9,
    "Effect prose" for Decision 3).
  - `// mq.X / mq.X (Task N) / mq.X journal / mq.X invariant` ->
    "the canonical-class-form rule / Class-class repurpose /
    method-dispatch-refactor journal / canonical-class-form
    invariant".
  - `// ct.X / ct.X (canonical-type-names) / ct.1.5a + ctt.2 /
    ct.2 Task N` -> "the canonical-form rule for type references /
    the canonical-form normalisation step / canonical-type-lookup
    refactor".
  - `// eob.X` -> "heap-Str-ABI" / "the Str carve-out".
  - `// rpe.X` -> "the per-type-print-op retirement".
  - `// post-mq.X / Pre-ct.X / pre-mq.X` -> "post-canonical-class-form" /
    "Pre-canonical-type-form" etc.
  - `/// Iter X regression: / /// Iter X.Y: / /// Iter A arm-close /
    /// Iter ct.4 (...): / /// Iter rpe.1 ...` -> descriptive
    phrases.

The journal filename in `crates/ailang-core/src/workspace.rs:573`
stays verbatim because it points at an actual file under
`docs/journals/`.

Tests: full `cargo test --workspace` green (80/80 test-result blocks
clean, no FAILED line). design_index_pin 5/5 + docs_honesty_pin 5/5
gating tests pass.
2026-05-20 09:58:04 +02:00
Brummel bcd41810f4 design/ + source rustdoc: replace opaque shorthand with content phrases + links
Reader-facing prose and rustdoc carried opaque shorthand like
"Decision 10", "clause-5", "mq.1", "ct.1", "eob.1", "rpe.1",
"post-mq.3", and "Iter 22b.1:" with no in-repo definition the reader
could follow. This commit replaces every such occurrence in the
durable tier the reader is most likely to land on (design/ ledger +
source //! module headers + the central /// public-item rustdoc) with
an inline content phrase plus, where applicable, a Markdown link to
the file that defines the referenced concept.

design/ ledger — 16 files:
  Definition-site headings demoted from "Decision N: <title>" to
  "<title>": authoring-surface, tail-calls, memory-model section in
  rc-uniqueness.md, dual-allocator section, typeclass design,
  effects "pure core + algebraic effects".
  Cross-reference sites: "Decision 1" -> canonical-schema principle
  (data-model); "Decision 3/4" -> effects + scope-boundaries; "Decision
  6" -> authoring-surface; "Decision 8" -> tail-calls; "Decision 9" ->
  rc-uniqueness (dual-allocator); "Decision 10" -> memory-model;
  "Decision 11" -> typeclasses (model). "clause-5" -> body-link
  durability gate. "clause-3" (in language-constraints) ->
  bug-class-reintroduction discriminator. "mq.1/2/3", "ct.1/4",
  "eob.1", "rpe.1" -> the canonical-form rule / the type-driven
  dispatch / the Str carve-out / etc. "post-mq.3" -> "type-driven".

design/contracts/feature-acceptance.md: file-local "clauses 1/2/3"
-> "criteria 1/2/3" (sprachliche Kohärenz mit der File-Überschrift
"Feature-acceptance criterion"); "the clause-3 mechanism" -> "the
bug-class-reintroduction discriminator".

Source //! module headers — 24 files:
  Stripped "Iter X.Y:" prefixes and "(Decision N)" / "(mq.X)" tags
  from spec_drift, uniqueness, reuse_shape, migrate_canonical_types,
  typeclass_22b{2,3,c}, suppress_filter, lift, mono, linearity,
  diagnostic, method_dispatch_pin, method_collision_pin,
  no_per_type_print_ops, mq3_multi_class_e2e, print_mono_body_shape,
  print_no_leak_pin, cli_diag_human_workspace_load_error,
  ct1_check_cli, prose snapshot, unbound_in_instance_method_pin,
  mono_xmod_ctor_pattern, desugar.

Central /// public-item rustdoc:
  ast.rs (full sweep — every "Iter X" + "Decision N" prefix
  reformulated; mode/Type::Fn rustdoc now points at memory-model.md;
  Constraint / SuperclassRef / InstanceDef / ClassDef rustdoc points
  at typeclasses contract).
  diagnostic.rs (all "(Iter X)" / "(mq.X)" tags on diagnostic codes
  removed).
  lib.rs (FORM_A_SPEC rustdoc points at authoring-surface.md
  instead of "Decision 6").
  canonical.rs (type_hash + Float-literal rustdoc).

Still outstanding (for a follow-up commit): ~500 inline `//`
code-body comments with `Iter X.Y` markers across the workspace, and
a handful of `///` rustdoc items in hash_pin / workspace_pin / lift /
mono / suppress_filter test-pin and internal-function bodies. Code
identifiers (test filenames like `mq3_multi_class_e2e.rs`, function
names like `iter18e_drop_iterative_default_preserves_hashes`) stay
verbatim per the user's "code identifiers stay verbatim" rule.

Tests: design_index_pin 5/5 + docs_honesty_pin 5/5; workspace builds
clean; full `cargo test --workspace` previously green (every
`test result: ok` line, no FAILED line).
2026-05-20 09:47:33 +02:00
Brummel 176821c2e7 iter design-md-rolesplit.1 (DONE 9/9): DESIGN.md -> design/ ledger role-split
The 3020-line docs/DESIGN.md is replaced by the design/ ledger:
design/INDEX.md (sole addressable spine, typed Contracts+Models tables,
polymorphic links — prose file OR authoritative source //!), 14
design/contracts/*.md test-linked invariants + 3 source-link-only
contracts (mangling/env-construction/qualified-xref, no prose file —
code is SoT), 5 design/models/*.md whitepapers, and
docs/journals/2026-05-19-design-decision-records.md (the
relitigation-guard archive — every why/rejected/does-not-do/rollback/
empirical ### moved out at ###-granularity). Clean cut: git rm
docs/DESIGN.md, no stub.

RED-first crates/ailang-core/tests/design_index_pin.rs — the 4-clause
anti-regrowth spine (DESIGN.md-gone / every-INDEX-link-resolves /
every-contract-names-a-resolvable-ratifier /
contracts-carry-no-decision-record-prose) — demonstrably RED before,
GREEN after. Build-atomic by task ordering: design_schema_drift.rs's
include_str! (the only compile-time consumer) retargeted to
design/contracts/data-model.md BEFORE the deletion; its
## Data model/## Pipeline slicer dropped (a simplification the split
enables). 2 NoInstance diagnostics + 2 lockstep E2Es retargeted to
design/contracts/{float-semantics,typeclasses}.md. ~12 agent reading
lists + 5 SKILL bodies + CLAUDE.md + skills/README.md + ~25
code/C/.ail/spec comment xrefs retargeted; OQ7 dangling 'Iter 13b'
cite deleted (no forward target — a pointer would be fiction).
honesty-rule.md rewritten so the rule names the new home
(rationale->journals), resolving the recon-found internal
contradiction; the two docs_honesty_pin.rs:70,72 pinned phrases kept
verbatim+contiguous.

Boss-verified independently: cargo test --workspace 646 passed /
0 failed; design_index_pin 4/4; acceptance grep CLEAN of live
DESIGN.md refs (residuals = only the spec-mandated clause-4
deletion-enforcer). 2 DONE_WITH_CONCERNS routed to the mandatory
milestone-close audit: (a) str-abi.md:23 '(iter str-concat,
2026-05-13)' provenance stamp trips advisory architect_sweeps Sweep-1
— Boss-confirmed byte-identical to DESIGN.md@deeffb1:2062-2065, a
faithfully-migrated PRE-EXISTING anchor (regexes verbatim, only path
retargeted), NOT split-introduced — RATIFY-or-tidy at audit; (b) a
now stale-direction intra-prose 'see Str ABI below' cross-ref in
float-semantics.md — audit-adjudication candidate. Plan defect noted:
Task 9 Step 4's verbatim acceptance grep used a ^./ anchor not
matching the system's grep -rIn output; substance re-verified CLEAN.

Spec grounding-check PASS x2. Journals INDEX + decision-records
pointer appended (Boss-only).
2026-05-19 13:04:22 +02:00
Brummel 208d7095bc fix(check): GREEN — over-strict-mode recognises ctor-rebuild-from-primitive-fields as a consume
Drives the RED test from a11cb7c to GREEN. Bug-fix iter
bugfix-over-strict-mode-ctor-rebuild-consume (debug -> implement
mini). Check-only lint-precision fix; zero codegen / runtime / ABI /
schema / DESIGN.md change.

The [over-strict-mode] lint's consume-detection
(any_sub_binder_consumed_for / pattern_has_consumed_heap_binder,
crates/ailang-check/src/linearity.rs) only recognised a consume of an
(own (con T)) param when a heap-typed pattern-binder was moved out of
`match p`. When p was destructured into purely primitive fields fed
into a Term::Ctor rebuilding p's own ctor, that genuine
dismantle+rebuild consume was invisible, so the lint spuriously
advised "(borrow ...) would suffice". An LLM author "fixing" that by
flipping an export own->borrow would silently invert the ABI
ownership contract — why a low-severity advisory FP got a real
RED-first fix.

Fix: a second recognition path in any_sub_binder_consumed_for — a
`match p` arm destructuring binders out of p's ctor that references
any of them (primitive or not) inside a Term::Ctor's args in the arm
body genuinely consumes p. Two pure helpers: ctor_uses_any_binder
(finds a fresh-allocation Term::Ctor reachable in the arm body) +
term_mentions_any_binder (deep free-var scan, so binder flow through
an intervening expr like (+ acc px) is recognised, not only a bare
Var arg). Conservative toward NOT suppressing: a ctor ignoring p's
payload still warns (negative-control verified). Over-strict-only —
by-name-shadowing imprecision is extra-silence, never under-strict
(Known debt in the journal + the fn doc). The two stale doc comments
that mis-attributed this FP to a nested `match` corrected for
doc-honesty (debugger concern #2 — same code region, in-scope).

Boss-verified independently: RED test now GREEN; full
cargo test -p ailang-check 108/0 lib + every binary 0-failed with NO
existing test modified; ail check examples/embed_backtest_step_tick.ail
no longer warns over-strict on st/tick (exit 0);
embed_backtest_step_tick_borrow.ail + M3 embed_backtest_step_record.ail
still clean; embed_tick_e2e + bench posture untouched.

+166/-20 in crates/ailang-check/src/linearity.rs only. Journal +
stats + INDEX line in this commit.
2026-05-18 23:50:13 +02:00
Brummel a11cb7cc9f test(check): RED — over-strict-mode false-positive on ctor-rebuild consume
RED-first audit trail (debug skill; fix follows as a separate GREEN
commit). Test-only, +97 lines in the linearity in-source test module,
no production change.

Bug: the [over-strict-mode] lint emits a conservative false-positive.
The consume-detection (any_sub_binder_consumed_for /
pattern_has_consumed_heap_binder, crates/ailang-check/src/linearity.rs
:853,942) only recognises a consume of an (own (con T)) param when a
heap-typed pattern-binder is moved out of `match p`. When p is
destructured into purely primitive fields (e.g. Float/Int) that are
fed into a Term::Ctor rebuilding p's own ctor, that rebuild's
re-consumption of the dismantled allocation is invisible, so the lint
wrongly tells the author `(borrow ...)` would suffice. It is
over-strict, never under-strict (exit 0; codegen/ABI unaffected) — but
an LLM author "fixing" the spurious warning by flipping an export's
declared mode own->borrow would silently invert the ABI ownership
contract, which is why a low-severity advisory FP gets a real
RED-first fix.

The carrier's initial hypothesis (nested inner `match` is the
discriminator) was disproved during diagnosis: the M3
embed_backtest_step_record.ail is silent only because its
implicit-mode scalar Float param disables the lint via the activation
gate (linearity.rs:327), not because it handles the rebuild; the
defect reproduces with a single param and no nesting. The RED unit is
therefore the general synthetic shape — an (own (con T)) param
consumed by a term-ctor rebuild of its own ctor — not the embed
fixtures.

RED test (fails now, goes GREEN when consume-detection sees the
ctor-rebuild re-consumption):
crates/ailang-check/src/linearity.rs ::
  linearity::tests::over_strict_mode_silent_when_ctor_rebuilt_from_primitive_fields
2026-05-18 23:39:31 +02:00
Brummel 4ea8bc5faf iter embedding-abi-m3.1 (DONE 6-7): freeze the value layout — DESIGN.md frozen-layout SSOT + lockstep pointers + enforceable byte-pin
Tasks 6-7 of the Boss-repaired split dispatch (Tasks 1-5 committed d5c565d).
Task 6: DESIGN.md §"Embedding ABI" gains the `### Frozen value layout
(M3 — one-way commitment)` SSOT subsection; both "provisional until M3"
sentences rewritten to one-way-freeze wording (docs_honesty_pin-safe — the
pinned "written **bare**" sentence stayed byte-verbatim, :2297->:2299
content-asserted); // FROZEN ABI lockstep pointers at runtime/rc.c +
match_lower.rs lower_ctor + drop.rs; 3 plan-named stale rustdocs fixed +
the Boss-caught stale // gate-comment block (check/lib.rs:1917-1922,
M1/scalar-only -> M1/M2/M3/C-ABI-permitted-incl-record); byte-pin
enforceability demonstrated (RED on a local offset perturbation, GREEN on
git-checkout restore — the only legitimate git op, working-tree only).
Task 7: milestone-close verification gate.

Boss-verified independently (agent report = intent, not outcome): workspace
639 passed / 0 failed; embed_record_e2e 2/2 (own+borrow, global
leak-freedom model); byte-pin 1/1; gate 10/10; forwarder 3/3;
docs_honesty_pin 5/5 pin-safe; design_schema_drift + embed_export_hash_stable
+ embed_e2e + M2 swarm regression-green-unmodified.

INDEX.md line added (deferred from the PARTIAL — one line per iter, final
title). Milestone-close audit next (architect Invariant 1 + bench trio,
spec Testing items 8/9 — audit-owned, not the implement run's job).
2026-05-18 21:29:50 +02:00
Brummel d5c565d48d iter embedding-abi-m3.1 (PARTIAL 5/7 + Boss spec-defect repair): single-ctor scalar record crosses the C ABI, ownership follows declared mode
Tasks 1-5 GREEN. T1 baseline pins (re-point annotation + @ailang_rc_alloc
heap-box byte-pin: size=8+n*8, tag@0, fields@8/16). T2 export gate widened
(is_c_scalar -> two-level is_c_abi_type: single-ctor all-Int/Float record;
multi-ctor/Str/List/nested still RED; gate suite 10/10; M1 adt-ret must-fail
re-pointed to multi-ctor+Str Reading). T3 codegen forwarder widened
(llvm_scalar record Type::Con -> ptr; M2 forwarder body byte-unchanged;
3/3 staticlib pins). T4/T5 E2E record round-trip own+borrow, global
leak-freedom.

Boss spec-consistency repair (M2.1-precedent class): orchestrator
correctly BLOCKED Task 5 on a genuine spec defect -- the single-ctx-readback
allocs==frees proof model is unsatisfiable for borrow (and only
coincidentally passes for own) because M2's TLS-ctx is bound only during
the synchronous forwarder call, so host-side decs land on g_rc_*, not ctx.
Boss-verified globally leak-free + value-correct both modes. Spec + plan +
harness amended to the stronger global model (sum all ailang_rc_stats:
lines; the M2-TLS cross-attribution documented as correct behaviour). No
fresh grounding-check (removes an over-strong measurement assumption).

Tasks 6 (DESIGN.md frozen-layout SSOT + lockstep pointers + freeze wording
+ enforceability demo) and 7 (workspace-green gate) re-dispatched on the
amended plan. Bench/architect milestone-close is audit-owned.

iter embedding-abi-m3.1 (PARTIAL); INDEX.md line deferred to the DONE commit
2026-05-18 21:16:41 +02:00
Brummel e406d07d81 iter embedding-abi-m1.1 (DONE 7/7): Embedding-ABI M1 — scalar AILang fn callable from C/Rust
Tasks 4-7 on the Boss-Repaired plan, completing the M1 iteration:

- Task 4: check-side export-signature gate — CheckError variants
  ExportNonScalarSignature / ExportHasEffects (codes
  export-non-scalar-signature / export-has-effects), code() arms,
  check_fn gate (params->ret->effects, first-violation-wins,
  unconditional on f.export.is_some()). The clause-3 discriminator
  in code: effectful/non-scalar exports fail to typecheck. 6/6.
- Task 5: codegen Target::StaticLib — Target enum, threaded param,
  @main/MissingEntryMain gated behind Target::Executable, one
  external @<sym> forwarder per export to @ail_<module>_<fn>
  (fn_scalar_sig/llvm_scalar). In-source missing_entry_main_is_error
  byte-unchanged. Lowering pin 2/2.
- Task 6: CLI ail build --emit=staticlib — clap field, Cmd::Build
  branch, build_staticlib (verbatim build_to prefix + has_export
  guard + two-archive clang -c/ar rcs tail) + run_cmd. CLI pin 2/2.
- Task 7: C-host E2E coherent-stop proof (cc links
  libembed_backtest_step.a + libailang_rt.a, backtest_step(0,3)=9 /
  (9,4)=25, s==25, exit 0) + DESIGN.md §"Embedding ABI (M1)"
  (scalar C ABI, provisional until M3). E2E pin 1/1.

Independent Boss verification: E2E 1/1, gate 6/6, full workspace
0 failures, roundtrip_cli + design_schema_drift + spec_drift green,
Invariant 1 holds (no new dep in core/codegen/runtime). 3 behaviour-
neutral plan pseudo-vs-reality concerns in the journal. Default-exe
codegen/runtime path byte-unchanged (check.py firing = tracked-P2
known-noise, audit-adjudicated). INDEX line added.

Completes the M1 iteration (impl). Milestone-close audit + fieldtest
(surface-touching) are the next pipeline steps.
2026-05-18 14:50:27 +02:00
Brummel 818177d835 iter embedding-abi-m1.1 (PARTIAL 3/7): schema + surface + baseline prerequisites; plan Repair
Tasks 1-3 of docs/plans/embedding-abi-m1.1.md, a verified known-good
subset (cargo build --workspace exit 0; full workspace green; the
roundtrip_cli all-examples gate green):

- Task 1: CLI build-path MissingEntryMain baseline pin
  (examples/embed_noentry_baseline.ail + embed_missing_main_baseline.rs;
  triple-assertion, layered on the green codegen-unit pin lib.rs:3314).
- Task 2: additive FnDef.export: Option<String> (serde default +
  skip_serializing_if, modelled on FnDef.doc); compile-driven thread
  of export: None across ~85 FnDef/AstFnDef literals / 18 files incl.
  all in-source #[cfg(test)] mod tests + drift/hash/spec-drift
  literals + the codegen lib.rs:3320 in-source pin; hash-stability
  golden pin; DESIGN.md fn-JSON "export" line. DONE_WITH_CONCERNS
  (plan symbol content_hash_fn -> def_hash per hash_pin.rs, plan-
  pseudo-vs-reality class, plan corrected).
- Task 3: Form-A (export "<sym>") modifier — parse_export +
  parse_fn thread + write_fn_def emission + form_a.md grammar;
  byte-identical round-trip.

Task 4 BLOCKED (Boss plan-defect: fixtures declared module != file
stem; AILang's loader hard-enforces module==stem at workspace.rs:438,
so ail check panicked on load before the gate). Boss resolution
(Option 2, overriding the orchestrator's Option 1, rationale in the
journal + plan Design-decision 6): keep descriptive embed_* filenames,
rename fixture MODULES to their stems — the C symbol backtest_step
stays via (export ...), demonstrating spec Decision 2's mangling-
decoupling rather than violating it; archive becomes
libembed_backtest_step.a, internal symbol @ail_embed_backtest_step_step,
host.c unchanged. Plan fixed (Design-decision 6 + Task-4 module==stem
+ Task-5/6/7 dependent strings + the no-*. Float-head + content_hash_fn
concerns folded). Headline fixture corrected; blocked-Task-4 WIP
discarded (recreated by the [4,7] re-dispatch from the fixed plan).

PARTIAL commit (not the iter's final commit): the implement Repair
path mandates committing the known-good subset so the [4,7]
re-dispatch starts from a clean tree that includes Tasks 1-3 (Tasks
4-7 structurally depend on the schema field + surface). INDEX line
added when the full iter lands post-re-dispatch.
2026-05-18 14:32:39 +02:00
Brummel 07f080256c iter remove-mut-var-assign.1: atomic removal of mut/var/assign
mut/var/assign removed from AILang entirely and atomically. Deleted:
Term::Mut/Term::Assign/struct MutVar; the three Form-A keywords +
parse_mut/parse_assign + grammar EBNF; the 4 mut CheckError variants;
the mut_scope_stack synth threading (param dropped from synth + every
internal/external/test caller); the two lower_term arms; and every
exhaustive no-_ Term::Mut/Term::Assign match arm across 17 source
files — cut in lockstep with DESIGN.md, fixtures, the drift trio,
carve-out and roadmap so the schema is honest at every commit. No
catch-all wildcard introduced (verified). loop/recur + let/if are
the surviving forms.

The shared codegen alloca machinery survives (loop reuses it):
mut_var_allocas renamed binder_allocas (representation-only, loop
codegen byte-identical) and the shared Term::Lam escape guard
simplified to !loop_stack.is_empty() with the loop half
(LoopBinderCapturedByLambda) byte-equivalent. Feature-acceptance
applied inverted: the removed feature fails clause 2 (redundant)
and clause 3 (IS the iterated-mutable-state bug class).

Behaviour preservation is executable: mut_counter/mut_sum_floats
still print 55 after the faithful let/if rewrite. The removal is
made executable by the new mut_removed_pin.rs (4 must-fail pins).
Independent verification: cargo test --workspace 605/0, zero
residual mut symbols in any crate source, loop/recur non-regression
all green (55 / 500000500000 / infinite-compiles / the
lambda_capturing_loop_binder pin), roundtrip_cli PASS.

One DONE_WITH_CONCERNS: a 4th recurrence of the recon-undercount
class (in-source mod tests + a drift-pin fn + 5 orphaned mut
.ail.json carve-outs + a non-enumerated E0599); all resolved within
implementer remit, no behaviour change. Milestone-close audit then
fieldtest remain.

spec docs/specs/2026-05-18-remove-mut-var-assign.md (grounding PASS)
plan docs/plans/remove-mut-var-assign.1.md
2026-05-18 11:06:17 +02:00
Brummel 2ee97943bd iter loop-recur.tidy GREEN: reject lambda-captures-loop-binder at check + milestone-close audit resolution
GREEN side of the RED audit-trail commit 39380d3. The loop/recur
milestone-close audit found a [high] correctness defect — a lambda
capturing a loop binder passed `ail check` then panicked
unreachable!() at codegen (crates/ailang-codegen/src/lambda.rs:102)
on type-correct input. Fixed symmetrically to mut.4-tidy: new
CheckError::LoopBinderCapturedByLambda (code
loop-binder-captured-by-lambda, bracket-free F2 Display), the
Term::Lam escape guard gained a parallel loop_stack pass. Minimal
mechanism: loop_stack element Vec<Type> -> Vec<(String,Type)> so
the already-threaded per-loop frame carries binder names; recur
still reads .1 by position (Boss-call-2 positional invariant
preserved verbatim — the name is a second field for the escape
guard only, a consumer iter-2 did not anticipate). Codegen
byte-unchanged (typecheck-only fix). carve_out 17->18 + ct1-F2 +
DESIGN.md note lockstep.

Folded in (Boss-side, audit resolution): the two [medium]
doc-honesty edits the audit surfaced (mut_var_allocas rustdoc now
states its mut-var+loop-binder dual use; Term::Loop doc-comment
now describes the real shipped state, not iter-1's stale
"per-binder phi" forward-look) + a [low] P2 roadmap todo
(plan-recon undercount countermeasure, pairs with planner Step-5
items 7+8). Bench gate: all 3 scripts exit 0, 25 metrics 0
regressed — pristine, carry-on (no baseline/ratify).

cargo test --workspace 619 -> 622 / 0 red (Boss-reran
independently, hash_pin 11/0). The loop/recur milestone is
audit-clean; fieldtest is the only remaining step before close.
2026-05-18 00:21:06 +02:00
Brummel 39380d361d test: RED — lambda capturing a loop binder must fail ail check (loop-recur.tidy)
Milestone-close audit (architect, edd2558) surfaced a [high]
correctness defect: a (lam ...) body that references a loop binder
passes `ail check` (exit 0) then panics unreachable!() at codegen
(crates/ailang-codegen/src/lambda.rs:102) on type-correct input —
a DESIGN.md "Robustness against hallucinations" violation.

Root cause (debugger-confirmed): the Term::Lam escape guard at
crates/ailang-check/src/lib.rs:3608 inspects only mut_scope_stack;
loop binders live in `locals` (Term::Loop arm ~:3911, iter-2
design), so the mut.4-tidy MutVarCapturedByLambda-class rejection
has no loop-binder counterpart — the capture is accepted at check
and crashes codegen.

This RED commit pins the FIXED contract: the program must fail
`ail check` with code `loop-binder-captured-by-lambda` (symmetric
to mut-var-captured-by-lambda), NOT panic codegen. RED today
(left: [] vs right: ["loop-binder-captured-by-lambda"]); 6 prior
loop_recur_typecheck_pin tests still green. GREEN follows.
2026-05-18 00:08:51 +02:00
Brummel 1566ce0b29 iter loop-recur.2: typecheck semantics — binder typing, recur checks, verify_loop_body
Second of three iterations of the standalone loop/recur milestone
(plan 5ac57fe). Replaces the iter-1 synth CheckError::Internal stub
for Term::Loop/Term::Recur with real binder typing + positional
recur arity/type checking via a new loop_stack: &mut Vec<Vec<Type>>
frame threaded as mut.2's mut_scope_stack, a new private
verify_loop_body tail-position pass (sibling of the byte-frozen
verify_tail_positions — 0 deletions there), and the four Recur*
diagnostics firing point-exactly on four negative fixtures. The
iter-1 loop_sum_to.ail fixture now also typechecks clean; an
infinite loop typechecks (no termination claim). NO codegen (the
iter-1 lower_term stub stays — iter 3); NO Diverge/guardedness
(spec boundary).

Three Boss design calls implemented verbatim and journalled:
RecurTypeMismatch is an Assign-style structural pre-check (not a
unify-propagate); loop_stack is positional Vec<Type> (binder names
via ordinary locals); diagnostic-code precedence is by pass
ordering (no explicit logic).

Two DONE_WITH_CONCERNS, both journalled: a plan-ordering defect
(Task 2's compile gate forced the check_fn threading the plan
deferred to Task 4 — resolved byte-identically, only resequenced)
and the recurring mut.2-class recon-undercount of cross-module
synth callers (resolved via the plan's compile-sweep oracle).

Boss systemic fix folded in: planner SKILL.md Step-5 gains item 7
(compile-gate vs. deferred-caller ordering) so the plan-ordering
defect class is scrubbed at plan time. cargo test --workspace
608 -> 616 / 0 red (Boss-reran independently).
2026-05-17 23:33:43 +02:00
Brummel a179ec30a0 iter loop-recur.1: additive Term::Loop / Term::Recur / LoopBinder foundation
First of three iterations of the standalone loop/recur milestone
(spec 97c1ed1). loop/recur become real parseable / printable /
round-trippable / hash-stable strictly-additive AST nodes across
every no-wildcard exhaustive Term match in all six crates, plus
parse/print, prose arms, DESIGN.md + form_a.md schema blocks,
drift/coverage/hash anchors, and the spec's worked sum_to program
as a green round-trip fixture. NO typecheck semantics and NO real
codegen this iter by design: synth and lower_term are stubbed
CheckError::Internal / CodegenError::Internal exactly as mut.1
(real typecheck = iter 2, real loop-header/phi/back-edge = iter 3).

Two binding Boss design calls recorded in the plan header and the
journal: (1) verify_tail_positions "byte-unchanged" = its tail-app
verification role is unchanged, not its source — it is an
exhaustive no-wildcard match so two descent-only arms are
mandatory; acceptance evidence is the tail-app non-regression test.
(2) codegen is in iter-1 scope as stubs/pass-throughs because the
workspace must compile for cargo test --workspace.

Three plan-pseudo-vs-reality substitutions (serde Type::Con
literal, bare Int -> (con Int), unqualified LoopBinder) and one
recon-undercount integration-test site, all intent-preserving and
journalled. Boss forward-fix folded in: the committed specs
themselves wrote bare Int in the loop-binder snippets (parses as
Type::Var) — corrected the three headline snippets to (con Int) for
doc-honesty (no design/schema change).

cargo test --workspace 600 -> 608 / 0 red (Boss-reran
independently); iter13a + new loop_recur hash pins green.
2026-05-17 23:00:15 +02:00
Brummel ad682574ce docs: correct stale mono.rs module header — pass is implemented, not a skeleton
The module-level doc still described the iter-22b.3 Task-1 state
("no-op skeleton", "Planned (later tasks)", "eventual-state"
invariant) though later 22b.3 + 23.4 tasks filled in the full
synthesis fixpoint and call-site rewrite. Rewrite the header in
present tense to describe the implemented pass (early-out,
ClassMethod/FreeFn fixpoint, call-site rewrite, symbol-hashing
invariant as a current fact). No code change; same doc-honesty
class as a29700c (effect-doc-honesty).
2026-05-17 15:02:30 +02:00
Brummel 37ac704bf3 iter revert: back out the Iteration-discipline milestone (it.1 + it.2)
One forward iteration; main never rewound. 1ff7e81 (the pre-9973546
commit) is the per-region byte oracle — every reverted source/test
file is byte-identical to it; crates/ailang-check/src/lib.rs fully so.

Root cause being corrected: the Iteration-discipline milestone was an
over-escalation of fieldtest finding F1 (a [friction] item whose own
minimal recommendation was a DESIGN.md note). Its totality dichotomy
made the maximally-LLM-natural build(d:Int)=Node(1,build(d-1),
build(d-1)) inexpressible (it.3 BLOCKED); the only in-thesis escape
(A1/it.2b) conceded the language's first documented-unenforced
totality precondition — a purity-pillar dilution the user rejected in
favour of a full revert + rebuild.

Removed: Term::Loop/Term::Recur/LoopBinder; the verify_structural_
recursion guardedness pass + term_contains_loop + Diverge-injection +
the transitively-it.2 module_fns plumbing; the five Recur*/
NonStructuralRecursion CheckError variants (+ code() + the 3 dedicated
ctx() arms); the it.1 codegen loop-header/phi/back-edge + parallel
block_terminated setter; all Loop/Recur walker arms; 16 it.1/it.2
fixtures; 2 pin files; bench/it3-oracle/. Restored: 2 RC fixtures to
1ff7e81 content.

Surgically kept (not in 1ff7e81, landed with the milestone but
independently sound): feature-acceptance clause 3 in DESIGN.md and
skills/brainstorm/SKILL.md, with its worked example de-claimed from
"shipped" to hypothetical-illustration form; the F3 P2 todo.
bench/orchestrator-stats/2026-05-15-iter-it.{1,2,3}.json kept as
historical record (like journals/plans).

Sole net addition: an honest F1/F4 documented-idiom note in DESIGN.md
(the tail-recursive accumulator fallback; examples/mut_counter.ail),
guarded by a doc-presence test — "a documentation note is not a
reshape", asserts nothing at the typecheck level.

Roadmap: the Iteration-discipline block + blocking-fork section
removed; the genuine total-Int-recursion ambition preserved as a
deferred P2 milestone sequenced behind a future Nat/refinement-types
milestone (not abandoned — correctly sequenced after the type
machinery it needs). 2026-05-15-iteration-discipline.md carries a
superseded header; it.1/it.2/it.3 journals + plans stay as history.

Correctness gate PRISTINE: 164 surviving 1ff7e81-era fixtures
ail check/ail run byte-identical to pre-milestone behaviour (verified
against a 1ff7e81 worktree reference compiler, zero drift);
cargo test --workspace 600/0; zero residual it.1/it.2 production
surface.

Spec docs/specs/2026-05-16-iteration-discipline-revert.md (b3853bf),
plan docs/plans/2026-05-16-iter-revert.md (abf0013).
2026-05-16 01:28:47 +02:00
Brummel a4be1e58a3 iter it.2: structural-guardedness checker + first real Diverge effect
Iteration-discipline milestone, 2 of 3. Strictly additive (nothing
tail-related removed; that is it.3). New whole-body pass
verify_structural_recursion sibling of verify_tail_positions
(DD-1): smaller-set algorithm with implicit candidate inference +
unconstrained accumulators (DD-2, foldl=structural), self/mutual
via inline ADT-family union-find (DD-3), it.2-only tail==false
grandfather. CheckError::NonStructuralRecursion. term_contains_loop
(stops at Term::Lam, DD-4) injects Diverge so existing
UndeclaredEffect enforces it, no new variant; lam-arrow + LetRec
sub-effect sites wired. DESIGN.md Decision 3 synced. Four it.1
loop fixtures gained !Diverge.

Two spec-premise boundary defects surfaced + resolved within the
additive invariant (corpus clean, check not weakened), recorded as
corrected it.3 corpus-migration scope: (1) the "21 tail-app
fixtures" grandfather premise under-counts the corpus —
no-ADT-candidate counter recursions have no structural position to
verify, deferred to it.3; (2) two RC-regression fixtures joined the
spec's transitional tail-app grandfather as the other 20 do (RC==GC
guards verified still green). cargo test --workspace 622/0; 9
acceptance pins non-vacuous. Spec fda9b78, plan bc9f512.
2026-05-15 15:29:43 +02:00
Brummel 96db54d15d iter it.1: loop/recur additive — Term::Loop/Term::Recur/LoopBinder end-to-end
Iteration-discipline milestone, 1 of 3. Adds named loop + recur as
strictly-additive first-class AST nodes: parse/print/prose/serde/
round-trip/schema lockstep, typecheck (binder typing + recur
arity/type unification via loop_stack threaded as mut.2's
mut_scope_stack; recur-tail-position via verify_loop_body), codegen
(loop-header + one phi per binder; recur back-edge br with a NEW
parallel block_terminated setter; lambda-boundary loop_frames
save/restore). Four Recur* CheckError variants. Strictly additive:
zero deletions touch tail-app/tail-do or the seven existing
block_terminated sites — this is what makes the destructive it.3
safe. recur synth = fresh metavar (resolves the plan's flagged
Type::unit() risk). loop_counter->55, loop_in_lambda->49, four
negatives fire, tail-app byte-identical, cargo test --workspace
green. Spec fda9b78, plan 7381a42.
2026-05-15 14:38:55 +02:00
Brummel 1ff7e811af fix: mut-local diagnostics doubled the [code] prefix in human stderr (fieldtest F2)
The four mut-local CheckError variants (MutAssignOutOfScope,
AssignTypeMismatch, UnsupportedMutVarType, MutVarCapturedByLambda)
embedded the bracketed kebab code in their thiserror Display body,
while the non-JSON CLI formatter independently prepends [code] from
CheckError::code() — doubling it. Non-mut variants never embedded
the bracket; this brings the four in line with that convention.

RED-first via the debug skill: ct1_check_cli.rs pins the observable
property (code appears exactly once in the rendered human
diagnostic). GREEN was a trivial four-string mechanical edit.

Tests 598 -> 599.
2026-05-15 10:13:50 +02:00
Brummel 20add51112 iter mut.4-tidy + audit close — mut-local milestone closed
Tidy iter addressing the audit-mut-local drift. Plus paired baseline
update on bench/baseline_compile.json (audit-skill discipline).

Architect [high] items closed:

1. CheckError::MutVarCapturedByLambda rejects lambdas whose body
   free vars include a mut-var of the enclosing mut_scope_stack.
   Uses the existing ailang_core::desugar::free_vars_in_term walker
   (which honours Term::Match pattern bindings). The scan runs only
   when mut_scope_stack is non-empty.

2. crates/ailang-codegen/src/lambda.rs: the capture-not-in-locals
   path that previously raised CodegenError::Internal blaming the
   typechecker now uses unreachable!. The companion comment block
   was rewritten to state the current reality.

Architect [medium] items closed (stale mut.1-stub history comments):

3. docs/DESIGN.md §'Term (expression)' mut/assign block: the
   trailing paragraph describing the iter mut.1 stub state was
   replaced with one describing the current mut.3-end-state. The
   inline jsonc comment on {'t': 'assign'} was updated to drop the
   'deferred to mut.2/mut.3' language.

4. crates/ailang-codegen/src/lib.rs: the stale comment block above
   the real Term::Mut arm describing the mut.1 stub was removed
   entirely.

Other:

- Short-circuit on empty mut_scope_stack in synth's Term::Var arm:
  the iter mut.2 prepend now skips the iter-and-find walk when
  the stack is empty, eliminating any per-Var-resolution overhead
  for the common case (programs with no mut blocks). The
  short-circuit did NOT close the check_ms regression — see ratify
  below.

- Spec docs/specs/2026-05-15-mut-local.md §'Out of scope' amended
  with the lambda-capture rejection bullet.

- Negative fixture examples/test_mut_var_captured_by_lambda.ail.json
  + driver test extension in crates/ailang-check/tests/
  mut_typecheck_pin.rs (6th test) +
  crates/ailang-core/tests/carve_out_inventory.rs EXPECTED bumped
  12 → 13.

Bench-regression ratify:

bench/compile_check.py check_ms showed a uniform ~30-50% relative
shift across the entire 11-fixture suite (~0.5ms absolute on a
1.4-1.5ms baseline). The uniformity across fixtures of very
different Var counts argues for a fixed-cost-per-invocation tax,
not a Var-proportional hot path. The Term::Var short-circuit
falsified the hot-path hypothesis. The plausible remaining causes
(synth-parameter-passing through ~19 recursive sites, and binary-
size startup tax from mut-* adding ~1400 LOC to typecheck/codegen)
are both feature-cost, not pathological. Ratified by paired
journal entry; bench/baseline_compile.json updated to the post-
mut-local numbers via 'bench/compile_check.py --update-baseline'.

bench/check.py continues to show the established tail-latency-noise
envelope from audit-pd (2026-05-14) — no separate ratify needed.

bench/cross_lang.py clean.

Tests: 594 → 598 green (4 new lib.rs mod tests + 1 driver test +
1 fixture-corpus uptake).

Journal: docs/journals/2026-05-15-iter-mut.4-tidy.md.

mut-local milestone end-to-end status:
  - mut.1 (7b92719): AST + Form A surface.
  - mut.2 (b24718a): typecheck.
  - mut.3 (03fb633): codegen + e2e.
  - mut.4-tidy (this commit): audit-drift close + bench ratify.
mut-local milestone CLOSED.

Refs: docs/specs/2026-05-15-mut-local.md,
docs/plans/2026-05-15-iter-mut.4-tidy.md.
2026-05-15 09:21:33 +02:00
Brummel b24718a5ff iter mut.2: typecheck for Term::Mut + Term::Assign
Replaces the iter mut.1 dispatch stubs in synth with real typecheck
logic. Codegen stubs stay (deferred to mut.3); examples/mut.ail now
typechecks clean but still cannot run end-to-end.

Concretely:

- crates/ailang-check/src/lib.rs: three new CheckError variants
  (MutAssignOutOfScope, AssignTypeMismatch, UnsupportedMutVarType)
  with #[error('[code]: msg')] Display attrs matching the cli-diag-
  human bracketed-code convention; code() + ctx() arms emit
  kebab-case codes and structured JSON payloads.

- synth signature: new parameter mut_scope_stack: &mut Vec<IndexMap<
  String, Type>> after locals, threaded through every recursive call
  site (synth's 18 internal calls + mono.rs:712/1337 re-synth +
  lift.rs:723 + builtins.rs test helpers + the mq.3 in-test helper
  at lib.rs:6663). Stack is per-walk and lexically scoped — push on
  Term::Mut entry, pop on exit. Each frame is an IndexMap so
  declaration order is preserved for the diagnostic 'available' list.

- Term::Var resolution: prepended with innermost-first mut-scope
  lookup. Mut-vars are monomorphic — no Forall instantiation, no
  free_fn_owner recording. Innermost-wins shadowing falls out of
  the iteration order.

- Term::Mut arm: gate var types to Int/Float/Bool/Unit only via
  a small is_supported_mut_var_type helper; each var's init is
  synth'd in the in-progress scope (the var itself is not yet
  bound, so it does not self-shadow during init); push completed
  frame, synth body, pop. Block's type is body's type.

- Term::Assign arm: walk mut_scope_stack innermost-first looking for
  name. On miss: MutAssignOutOfScope with available flattened
  across all frames (innermost-first, deduplicated, preserving
  order). On hit: synth value, unify against declared type — on
  mismatch emit AssignTypeMismatch with rendered types; on success
  produce Type::unit().

- Five .ail.json fixtures under examples/ exercising each
  diagnostic plus a positive nested-shadow sanity case, driven by
  the new pin test crates/ailang-check/tests/mut_typecheck_pin.rs
  (load_workspace + check_workspace + assert exact codes).

- carve_out_inventory.rs EXPECTED extended 7 → 12 to cover the new
  negative-fixture set (consistent with the form-a-default-authoring
  spec §C4(b) precedent for type-rejection fixtures staying as
  .ail.json-only).

Plan deviations from recon: three additional synth() call sites
beyond the four enumerated (lift.rs:723, builtins.rs x2,
lib.rs:6663) surfaced via the build-red structural signal; each
threaded with a fresh empty stack. carve_out_inventory.rs extension
was required by the existing pin but not named in the recon — a
documentary concern for the next planner pass.

Tests: 579 → 592 green; examples/mut.ail typechecks clean
('ok (26 symbols across 2 modules)') via cargo run --bin ail --
check examples/mut.ail; cargo build green; full workspace test
green.

Journal: docs/journals/2026-05-15-iter-mut.2.md.

Refs: docs/specs/2026-05-15-mut-local.md, docs/plans/2026-05-15-iter-mut.2.md.
2026-05-15 01:37:25 +02:00
Brummel 7b92719244 iter mut.1: AST extension + Form A surface for local mutable state
First iteration of the mut-local milestone (foundation step on the
Stateful-islands roadmap path). Lands the schema + surface tier:
Term::Mut, Term::Assign, and the nested MutVar struct become
first-class AST nodes that round-trip cleanly through Form A.
Typecheck and codegen recognition are deferred to mut.2 and mut.3
per the spec's out-of-iteration boundary; reaching either dispatch
entry point with these variants produces CheckError::Internal /
CodegenError::Internal with a 'deferred to iter mut.{2,3}' message.

Concretely:

- crates/ailang-core/src/ast.rs: two new Term variants behind
  #[serde(tag = 't')]; pub struct MutVar { name, ty, init } adjacent
  to Arm. Two canonical-bytes pin tests for the explicit-empty-vars
  serialisation and the assign round-trip.

- ~25 substantive Term-walker arms across ailang-core/desugar,
  ailang-core/workspace, ailang-check (lib + lift + linearity + mono
  + pre_desugar_validation + reuse_shape + uniqueness),
  ailang-codegen (escape + lambda + lib), ailang-prose, and
  crates/ail/src/main.rs. Universal policy: substantive recurse-into-
  children at every site; only the two dispatch entry points
  (synth in ailang-check, lower_term in ailang-codegen) stub with
  Internal-error. One test-side walker arm in
  crates/ail/tests/codegen_import_map_fallback_pin.rs not
  enumerated by the plan was added as well (defensive recursion).

- ailang-surface: parse_mut + parse_assign helpers; Term::Mut
  body desugared from a flat statement sequence into a right-folded
  Term::Seq chain inside the JSON-AST. Print arms in print.rs match
  the parser convention. EBNF prologue + crates/ailang-core/specs/
  form_a.md productions updated. Four new parser pin tests cover
  the empty-mut, single-var, body-required, and vars-only-no-body
  cases.

- Drift + coverage tests extended: design_schema_drift.rs adds two
  exemplars + match arms; schema_coverage.rs adds two VariantTag
  entries + EXPECTED_VARIANTS + visit_term arms; spec_drift.rs adds
  two exemplars + match arms. DESIGN.md §'Term (expression)' gets
  jsonc-blocked schemas for the two new variants.

- examples/mut.ail: six-fn round-trip fixture exercising empty mut,
  single-var, two-var, nested-shadow, and the four supported scalar
  return types (Int, Float, Bool, Unit). The round_trip auto-glob
  and schema_coverage corpus walker both pick it up.

Plan deviation: the plan named lib.rs:2572 as the typecheck
dispatch stub site, but that line is actually verify_tail_positions
(substantive walker). The real dispatch is synth (3403-area, stub
at 3489); the orchestrator routed correctly.

Tests: 564 → 579 green; cargo build green; round-trip green for
the new fixture; all drift + coverage tests green.

Journal: docs/journals/2026-05-15-iter-mut.1.md.

Refs: docs/specs/2026-05-15-mut-local.md, docs/plans/2026-05-15-iter-mut.1.md.
2026-05-15 01:10:56 +02:00
Brummel 6fdb45d2f2 iter rpe.1: retire per-type print effect-ops
Single iter shipping the post-milestone-24 follow-up named in
docs/specs/2026-05-14-retire-per-type-print-effects.md. After this
iter the only surviving direct-output effect-op is `io/print_str`;
all per-type print primitives are replaced by the polymorphic
`print` helper (prelude, iter 24.3).

Components:
- 92 examples/*.ail fixtures migrated (do io/print_<T> x) →
  (app print x); 6 .prose.txt snapshots regenerated via `ail prose`.
- Four-site lockstep compiler deletion: crates/ailang-check/src/builtins.rs
  (3 effect_ops.insert blocks + 3 list() rows + the
  install_io_print_float_signature test + module + EffectOpSig
  doc-comments); crates/ailang-codegen/src/lib.rs lower_app
  (3 arms + lowers_io_print_float test); crates/ailang-codegen/src/synth.rs
  builtin_effect_op_ret match-arm pattern. Dead `intern_string`
  helper removed as a follow-up.
- Five incidental test-body migrations (ailang-check x2, ailang-core
  spec_drift + design_schema_drift, ailang-surface/src/lex.rs,
  ailang-prose/src/lib.rs round-trip test).
- Cat B test-harness patch: six IR-shape tests in
  crates/ail/tests/e2e.rs gained a monomorphise_workspace call
  before lower_workspace_with_alloc so they follow the same
  pipeline as `ail build` (the home-rolled desugar+lift loop
  stayed because mono's precondition is "already lifted"; mono
  inserts after lift).
- Six doc-comment touch-ups (lex.rs module doc, parse.rs
  diagnostic example, ail/src/main.rs x2, runtime/str.c %g anchor,
  crates/ailang-core/specs/form_a.md surface-spec example).
- DESIGN.md seven-site sweep (Decision 11 example, Polymorphic
  print past-tense, Heap-Str output sentence, effect-op
  invocation comment, Float NaN paragraph re-anchored on
  float_to_str, two "What is supported" lists).
- Three E2E test-comment polish + four IR-snapshot refresh + one
  canonical-hash pin update (plan-unanticipated downstream
  consequences of the corpus migration).
- bench/{check,compile_check,cross_lang}.py: all exit 0; no
  ratification needed.
- Roadmap entry struck through; per-iter journal at
  docs/journals/2026-05-14-iter-rpe.1.md.

Tests 564/0/3. cargo clippy and cargo doc: zero warnings.

Two upstream codegen bugs surfaced during the first BLOCKED
attempt and were fixed in separate iters before this retry:
- 1fb225e bugfix: mono cursor misalignment at poly-free-fn Var
  with class-constrained Forall.
- feb9413 bugfix: print leak — propagate ret_mode through rigid
  substitution + prelude Show.show ret_mode.

Known debt (carried forward for next /audit):
- Emitter.strings field is functionally dead post-iter (orphan
  after intern_string removal); cycles over empty map harmlessly.
2026-05-14 02:12:34 +02:00
Brummel feb941363a bugfix: print leak — propagate ret_mode through rigid substitution
`(app print x)` under --alloc=rc leaked the heap-Str allocated by
`show x` in print's body: the let-binder `s` in
`(let s (app show x) (do io/print_str s))` was never flagged
trackable, so the drop site at scope-close emitted no
`ailang_rc_dec(s)`. Minimal repro `(body (app print 42))` produced
`allocs=1 frees=0 live=1`.

Root cause is two-layer:

1. examples/prelude.ail.json declared the Show class method `show`
   without an explicit `ret_mode` on the return type, so serde
   defaulted to ParamMode::Implicit. Fix: add `"ret_mode": "own"`
   on the Show.show method, parallel to how the heap-Str-producing
   builtins (int_to_str, bool_to_str, float_to_str, str_clone,
   str_concat) declare it. examples/prelude.ail regenerated via
   `ail render` to stay parse-isomorphic with the JSON.

2. crates/ailang-check/src/lib.rs `substitute_rigids` was silently
   stripping `param_modes` and `ret_mode` whenever it rebuilt a
   `Type::Fn`, so even after the prelude fix, the mono-synthesised
   `show__Int / Bool / Str / Float` lost the `Own` annotation
   during rigid substitution. Fix: preserve both fields through
   the substitution.

RED pin: crates/ail/tests/print_no_leak_pin.rs (test
`alloc_rc_print_int_does_not_leak_show_result_str`) + fixture
examples/print_int_no_leak_pin.ail asserts allocs == frees and
live == 0 for `(body (app print 42))` under --alloc=rc.

Ten mono-body hash pins re-recorded (eq__Int/Bool/Str,
compare__Int/Bool/Str, show__Int/Bool/Str/Float, eq__IntBox) —
the bodies are semantically identical; the canonical JSON now
carries the previously-stripped mode metadata, so the body hash
moves. Re-pinning is bookkeeping for the intentional drift, not
a workaround.

Surfaced 2026-05-14 during the rpe.1 BLOCKED orchestrator run
(Cat A). Existed in latent form since iter 24.3 (when Show + print
shipped); only became user-observable when `(app print ...)` joined
the corpus. cargo test --workspace: 565 / 0 / 3.

Open follow-up flagged for next /audit: grep for `Type::Fn { ..., .. }`
field-spread sites — any other shape that drops modes during
rebuild is a latent instance of the same bug class. Out of scope
for this minimal fix.
2026-05-14 01:51:50 +02:00