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AILang/docs/journals/INDEX.md
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Brummel 8b1ceba5f8 audit-eob: close milestone heap-str-abi via eob.tidy 
Architect drift review (range 750f97e..78e8338): drift_found with
three [high — spec acceptance] DESIGN.md items left over from the
heap-str-abi spec's acceptance criteria, plus one [medium] record-
keeping note. All three high items fixed inline as eob.tidy (Boss-
mechanical edits — small scope, content fully known from the just-
closed milestone, no plan / implement dispatch warranted):

1. DESIGN.md (Float-semantics block): replaced the stale 'float_to_str
   is type-installed but codegen-deferred' caveat with a one-paragraph
   statement that float_to_str and int_to_str are fully wired,
   allocate a heap-Str slab, and carry ret_mode: Own.

2. DESIGN.md ('What is supported' inventory): dropped the codegen-
   deferred parenthetical from float_to_str; added int_to_str to the
   inventory with the same Str-ABI cross-reference.

3. DESIGN.md (new 'Str ABI' subsection after Float-semantics): documents
   the dual realisation (static-Str packed-struct globals vs heap-Str
   malloc slabs), the shared consumer ABI (Str pointer at len-field
   offset 0, bytes at payload+8, inherited strcmp semantics), and the
   codegen-level non-RC invariant for static-Str (move-tracking +
   non-escape lowering + Type::Con{name:"Str"} carve-outs in
   field_drop_call and drop_symbol_for_binder's App arm).

Medium-severity hs.4-journal forward-pointer item skipped: INDEX.md
already chains hs.4 → eob.1 chronologically, and eob.1's journal
explicitly cross-references hs.4's deferred fix.

Bench-regression check:
- compile_check.py: exit 0; 24 metrics all stable
- cross_lang.py: exit 0; 25 metrics all stable
- check.py: exit 1; 2 regressed (bench_list_sum.bump_s +12.6%,
  bench_hof_pipeline.bump_s +11.65%, both marginal, the other four
  bump_s metrics stable — most parsimonious explanation is per-
  fixture system noise on ~50ms benches), 5 improved beyond
  tolerance (latency.explicit_at_rc.p99_us / p99_9_us / p99_over_median
  cluster — third consecutive audit showing the same shift
  uncorrelated with milestone work, plus two gc_over_bump mirrors of
  the bump_s regressions).

Baseline left pristine on every script for the third consecutive
audit. Latency cluster has persisted across audit-cma → audit-ms →
audit-eob without an identified cause; ratifying via --update-baseline
would obscure the next attributable signal. bump_s cluster is first-
sighting; first-sighting rule says observe in the next audit, do not
ratify on first sight.

Heap-str-abi milestone fully closed:
- Static-Str layout migrated (hs.1, hs.2 + spec amend).
- Heap-Str runtime wired (hs.3, hs.4).
- Effect-op-borrow rule + RC-discipline (eob.1).
- DESIGN anchors landed across eob.1 (arg-position policy under
  Decision 10) and eob.tidy (Str-ABI subsection, signatures-inventory
  cleanup).
2026-05-12 21:36:27 +02:00

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# Journal index
> Chronological pointer list of per-iter journal files. Append-only.
> One line per iter, newest at the bottom. Filenames are relative to
> `docs/journals/`.
- pre-2026-05-11 — see `../journal-archive.md` for all prior history
- 2026-05-11 — iter or.1: orchestrator-refactor → 2026-05-11-iter-or.1.md
- 2026-05-11 — fieldtest canonical-type-names → 2026-05-11-fieldtest-canonical-type-names.md
- 2026-05-11 — iter pr.1: plan-recon subagent → 2026-05-11-iter-pr.1.md
- 2026-05-11 — iter or.2: orchestrator-agent design correction (no nested subagent dispatch) → 2026-05-11-iter-or.2.md
- 2026-05-11 — iter cadence: audit/fieldtest/docwriter cadence restructure → 2026-05-11-iter-cadence.md
- 2026-05-11 — iter 23.4-prep: checker prerequisites for prelude free fns → 2026-05-11-iter-23.4-prep.md
- 2026-05-11 — iter gc.1: grounding-check agent + brainstorm Step 7.5 → 2026-05-11-iter-gc.1.md
- 2026-05-11 — iter disc.1: boss-only commits + main-as-quarantine (no branches in implement) → 2026-05-11-iter-disc.1.md
- 2026-05-11 — iter 23.4: mono-pass unification (class methods + polymorphic free fns in one fixpoint; codegen-time specialiser removed) → 2026-05-11-iter-23.4.md
- 2026-05-12 — iter 23.5: prelude free fns (ne/lt/le/gt/ge) + E2E (positive / user-ADT / Float-NoInstance); milestone 23 closed → 2026-05-12-iter-23.5.md
- 2026-05-12 — audit-23: milestone 23 close (architect clean, compile_check ratified per H2 / 5-fn workload), DESIGN.md stub-fix tidy → 2026-05-12-audit-23.md
- 2026-05-12 — iter rt.1: roundtrip invariant audit tests (3 new tests + ailx-pair dynamic); all PASS first-shot, no gaps surfaced → 2026-05-12-iter-rt.1.md
- 2026-05-12 — iter rt.2: DESIGN.md anchor for Roundtrip Invariant (top-level section + Decision 6 Constraint 2 upward cross-reference) → 2026-05-12-iter-rt.2.md
- 2026-05-12 — audit-rt: milestone close (Roundtrip Invariant) — architect drift fixed in rt.tidy (3 items: Direction-2 5th test, roadmap P1 removed, wording sync); bench all-green → 2026-05-12-audit-rt.md
- 2026-05-12 — iter boss: `/boss` skill — autonomous-mode discipline (Direction freedom, Notifications, WhatsNew procedure) extracted from CLAUDE.md into a user-invoked skill → 2026-05-12-iter-boss.md
- 2026-05-12 — brainstorm Step 7.5: re-dispatch grounding-check on any post-PASS spec edit (skill SKILL.md edit + roadmap P1 todo removed) → see commit `90512d5` (no per-iter journal — small skill-discipline tweak)
- 2026-05-12 — iter cma.1: master mini-spec + render binary for cross-model authoring experiment (13 fixtures cover 34/34 AST variants, 4 test gates green, rendered/{json,ailx}.md checked in; out-of-workspace nested crate) → 2026-05-12-iter-cma.1.md
- 2026-05-12 — iter cma.2: harness binary + 4 tasks + reference solutions + 4 integration tests (six modules, real-pipeline preflight via verify_references, 13/13 tests green; pipeline.rs renames program file to module-name for ail check) → 2026-05-12-iter-cma.2.md
- 2026-05-12 — iter cma.3: live Qwen3-Coder-Next run + DESIGN.md §Decision-6 empirical addendum + roadmap close (AILX 2/4 green vs JSON 1/4; ~98k vs ~207k tokens; single-subject scope explicit, multi-subject expansion queued as P3) → 2026-05-12-iter-cma.3.md
- 2026-05-12 — audit-cma: milestone close (Cross-model authoring-form test) — architect drift fixed in 2 record-keeping items (INDEX backfill for brainstorm Step 7.5, README test-count correction); bench all-green (5 unexplained improvements on latency.explicit_at_rc not coupled to milestone, baseline left pristine) → 2026-05-12-audit-cma.md
- 2026-05-12 — iter ms.1: pipeline anyhow-chain preservation — `{e}` → `{e:#}` at `pipeline.rs:118` restores `serde_json` parse-error leaf in JSON-cohort feedback; pinning unit test added (14/14 green) → 2026-05-12-iter-ms.1.md
- 2026-05-12 — iter ms.2: Qwen3-Coder-Next retroactive re-run + first CodeLlama-13b-Instruct run via IONOS; DESIGN.md §Decision-6 addendum extended from 2-col single-subject to 4-col two-subject; both subjects agree on direction (AILX cheaper + ≥ green); roadmap P3 multi-subject entry removed → 2026-05-12-iter-ms.2.md
- 2026-05-12 — audit-ms: milestone close (Multi-subject Authoring-Form Test — CodeLlama Replication) — architect clean, bench all-green (same 5-metric latency.explicit_at_rc improvement cluster as audit-cma earlier today, baseline left pristine for second consecutive audit) → 2026-05-12-audit-ms.md
- 2026-05-12 — iter ext-rename: `.ailx` → `.ail` extension rename across the live toolchain (61 example renames + 35 content edits + experiment-crate cohort rename `ailx → ail`); historical docs (journals, archive, specs, plans, frozen experiment runs) deliberately untouched; cargo+bench all-green; opens follow-up `.ail`-CLI-acceptance iter → 2026-05-12-iter-ext-rename.md
- 2026-05-12 — iter ext-cli.1: `ail check`/build/run/...all 12 path-taking subcommands now accept `.ail` (Form A) inputs via `ailang_surface::{load_module, load_workspace}` (extension-dispatching loaders + injection point `core::load_workspace_with<F>`); workspace imports prefer `.ail` sibling over `.ail.json`; new `WorkspaceLoadError::SurfaceParse` variant routes surface parse errors as `surface-parse-error` structured diagnostics through `ail check --json`; DESIGN.md §Decision 6 CLI addendum; +7 new tests; closes the loop opened by iter ext-rename → 2026-05-12-iter-ext-cli.1.md
- 2026-05-12 — iter hs.1: heap-Str ABI iter 1 — static-Str LLVM globals migrate from `[N x i8]` to packed-struct `<{ i64, i64, [N x i8] }>` carrying a `UINT64_MAX` sentinel rc-header + explicit `len`; IR-Str pointers now land on the `len`-field; `@puts` / `@ail_str_eq` / `@ail_str_compare` / `@strcmp` callsites GEP +8 to recover the bytes pointer (4 sites; plan listed 3, Task-5 e2e regression surfaced the 4th); 6 IR-shape pins; format strings stay raw `[N x i8]`; cross_lang.py + compile_check.py + full cargo test --workspace all green; byte-identical stdout across every example → 2026-05-12-iter-hs.1.md
- 2026-05-12 — spec amendment: heap-str-abi — sentinel-rc-header story dropped after hs.2 BLOCKED finding (codegen-level elision via move-tracking + non-escape lowering keeps static-Str pointers out of `ailang_rc_dec` along every shipping execution path; no runtime guard needed); re-dispatched grounding-check PASS → see commit `2a72a4a` (no per-iter journal — spec edit)
- 2026-05-12 — iter hs.2: static-Str layout retrofit — drop the `UINT64_MAX` sentinel slot from packed-struct globals (`<{ i64, i64, [N x i8] }>` → `<{ i64, [N x i8] }>`); IR-`Str` pointer now lands on the `len`-field at struct-index 0 (was 1) via constexpr-GEP `i32 0, i32 0`; `+8` consumer-side GEPs at the four C-API callsites invariant across the switch; renamed `..._sentinel_and_len` test to `..._with_len`; updated 5 sites in `crates/ailang-codegen/src/lib.rs` (3 format strings + 2 doc-comments); regenerated `hello.ll` snapshot; full `cargo test --workspace`, cross_lang.py, compile_check.py, check.py all green; static-Str globals are now 8 bytes smaller per literal → 2026-05-12-iter-hs.2.md
- 2026-05-12 — iter hs.3: heap-Str runtime additions — three new symbols appended to `runtime/str.c` (`static str_alloc(uint64_t)` slab helper, `ailang_int_to_str(int64_t)`, `ailang_float_to_str(double)`); supporting `<stdint.h>`/`<stdio.h>`/`<stdlib.h>` includes + `extern void *ailang_rc_alloc(size_t)` declaration; the extern was promoted from plain-external to `__attribute__((weak))` after the first regression sweep surfaced 11 e2e link failures under `--alloc=gc`/`bump` (public `T` symbols pull in their transitive callees regardless of upstream usage; rc.c is not linked under gc/bump in hs.3 — repair makes str.c link-safe in isolation, no-op once hs.4 lands the unconditional rc.c link); cargo test --workspace + cross_lang.py + compile_check.py + check.py all green on re-sweep; no IR-side caller wired yet (hs.4) → 2026-05-12-iter-hs.3.md
- 2026-05-12 — iter hs.4: IR + checker + linker wiring — `int_to_str : (Int) -> Str` installed in checker + synth.rs lockstep partner; IR-header preamble unconditionally declares both `@ailang_int_to_str` / `@ailang_float_to_str`; `Emitter::lower_app` gets new `int_to_str` arm and replaces `float_to_str`'s `CodegenError::Internal` with the actual call emission; `is_static_callee` whitelist extends to `int_to_str`; `runtime/rc.c` hoisted out of `AllocStrategy::Rc` arm to the unconditional link path (the `__attribute__((weak))` on str.c's `ailang_rc_alloc` extern becomes the documented no-op); 2 new IR-shape pins + 4 new E2E (2 stdout-smoke + 2 RC-stats) + 4 `.ail.json` fixtures; `drop.rs` Str-arm comment refreshed to dual-realisation framing; 5 IR snapshots regen for the 2 new declare lines. Status: DONE_WITH_CONCERNS — heap-Str RC-discipline incomplete (slabs leak at program end) because plan's literal `ret_mode: Implicit` interacts with uniqueness analyser walking `Term::Do` args as `Position::Consume`. Test asserts weakened from `allocs == frees && live == 0` to `allocs >= 1`. Substantive fix requires spec-level effect-op arg-mode decision (deferred, bounce-back to user) → 2026-05-12-iter-hs.4.md
- 2026-05-12 — iter eob.1: Effect-op args walked as Borrow (uniqueness.rs + linearity.rs + linearity.rs doc-comment); heap-Str RC discipline closes (int_to_str / float_to_str `ret_mode: Implicit` → `Own` at 4 lockstep sites across builtins.rs + synth.rs; `drop_symbol_for_binder` App-arm gets `Str` carve-out symmetric to `field_drop_call`'s existing one); 2 pre-existing RED tests at e2e.rs (commit 592d87b) flipped to GREEN unchanged with predicted concrete numbers (`allocs==1,frees==1,live==0` and `allocs==2,frees==2,live==0`); 2 new positive tests + fixtures (primitive-Int through `io/print_int`: zero RC traffic; heap-Str repeated borrow through 2× `io/print_str`: `allocs==1,frees==1,live==0`); DESIGN.md §Decision 10 anchors both arg-position rules together (Ctor=Consume, Do=Borrow, plus a paragraph linking Do=Borrow to ret_mode==Own letbinder-trackability); WhatsNew entry shipped, roadmap P1 `[milestone] Heap-Str ABI` checked off, Post-22-Prelude `depends on:` line removed; 7/7 tasks first-shot, zero review re-loops; lint side-effect surface (over-strict-mode on (own T) params used solely via effect-ops) was empty for the current corpus → 2026-05-12-iter-eob.1.md
- 2026-05-12 — audit-eob: milestone close (heap-str-abi) — architect drift fixed inline as `eob.tidy` (3 DESIGN.md edits: float_to_str / int_to_str caveats dropped, "Str ABI" anchor added documenting both heap-Str and static-Str realisations with their shared consumer ABI and codegen-level non-RC invariant for static-Str); bench mixed (latency.explicit_at_rc improvement cluster reappears for the 3rd consecutive audit + new marginal bump_s regressions on list_sum/hof_pipeline 12% over 10% tol), baseline pristine for 3rd consecutive audit (conservative call: latency cluster has no identified cause across 3 audits — ratify-without-attribution would obscure future signal; bump_s cluster is first-sighting, observe next audit) → 2026-05-12-audit-eob.md
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