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.

bench/orchestrator-stats/2026-05-18-iter-embedding-abi-m1.1.json

@@ -0,0 +1,23 @@
+{
+  "iter_id": "embedding-abi-m1.1",
+  "date": "2026-05-18",
+  "mode": "standard",
+  "outcome": "PARTIAL",
+  "tasks_total": 7,
+  "tasks_completed": 3,
+  "reloops_per_task": { "1": 0, "2": 0, "3": 0, "4": 0 },
+  "review_loops_spec": 0,
+  "review_loops_quality": 0,
+  "blocked_reason": "spec-ambiguous",
+  "notes": {
+    "blocked_task": 4,
+    "blocked_detail": "load_workspace stem-match (workspace.rs:182 ModuleNameMismatch) is mutually unsatisfiable with the plan's verbatim fixtures (spec-mandated module `backtest` in file embed_backtest_step.ail; bad/bad_io/... in embed_export_*_rejected.ail) plus the verbatim load_workspace-based gate pin. Structural spec/plan defect rippling Tasks 4-7; Boss/spec decision required (Option 1: rename fixture files to module stems, keep module backtest).",
+    "concerns": [
+      "Task 2: plan symbol content_hash_fn(&FnDef) nonexistent; mirrored hash_pin.rs def_hash(&Def) per the plan NOTE's own resolution clause (planner pseudo-vs-reality class).",
+      "Task 4: plan fixture `*.` Float-multiply head nonexistent; used the typeclass-generic `*` head per the plan NOTE (not yet exercised — gate BLOCKED before run).",
+      "INFRA: docs/roadmap.md externally modified mid-session; path-disjoint from iter; left untouched (Boss-owned)."
+    ],
+    "fnDef_threading_sites": "~85 export:None literals across 18 files via compile-driven enumeration (2 dependency-ordered waves), cargo build --workspace exits 0",
+    "tests_state": "Tasks 1-3 + pre-existing all green; only the deliberately-RED embed_export_gate (6 tests) fails workspace-wide"
+  }
+}