Completes Embedding ABI — M2.1 (Tasks 1-4 committed c9a84b3 as the
known-good subset; this commit lands Tasks 5-9 from the re-dispatch
against the Boss-corrected plan).
- T5: swarm.c per-thread-ctx scalar-swarm capability demo (no
SHARED_CTX) + rc_accounting_shared_ctx_is_flagged_by_tsan added to
the item-1 harness driver (de-globalisation negative-control teeth,
where a shared ctx genuinely races on ctx->alloc_count).
- T6: M1 host.c migrated to the ctx ABI; embed_e2e green (s==25
through the ctx-threaded forwarder).
- T7: DESIGN.md current-state update (provisional-until-M3 narrowed
to the value/record layout; Decision-10 per-thread-ctx note);
docs_honesty-pinned sentence + (con Int) snippet preserved verbatim.
- T8: regression gate — workspace green; null-ctx fallback
byte-behaviour preserved.
- T9: bench-trio — compile_check/cross_lang clean; check.py
tracked-P2 noise only, causally exonerated (zero codegen/runtime
diff vs HEAD), NO baseline ratified.
Boss-verified directly (not on report trust): docs_honesty_pin 5/0,
design_schema_drift 8/0, embed_export_hash_stable 1/0,
embed_export_gate 6/0, embed_e2e 1/0, embed_staticlib_alloc_guard
2/0, print_no_leak_pin 1/0 + e2e rc_stats 4/0; the tsan coherent-stop
proven by hand — per-ctx clean (exit 0, 0 warnings), shared-ctx a
real ThreadSanitizer data race at rc.c:157/:208 (exit 66).
Known debt (journal + roadmap): DESIGN.md '## Embedding ABI (M1)'
header still says (M1) while the body mirrors M2 — out of Task 7's
scope-limited regions by design; post-audit doc-honesty tidy.
Milestone-close audit next.
Brummel
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