User-approved 2026-05-19; grounding-check PASS (all load-bearing
assumptions are already-shipped M3 ABI behaviour, each pinned by a
green non-ignored integration test: embed_tick_e2e own+borrow,
embed/tick_roundtrip.c, embed_staticlib_cli, embed_swarm_tsan,
embed_staticlib_alloc_guard). Terminal embedding milestone, zero
language/compiler/runtime change — ail-embed is a lean reusable
embedding module (Rust port of the audited tick_roundtrip.c) + the
real E2E; in-repo, [workspace]-excluded so the compiler workspace
owes nothing to ../libs/data-server or /mnt (Invariant 1 in the
dependency graph, not just on paper). Real data-server + real
Pepperstone ticks; symbol-fan headline + time-shard
boundary-invisibility proof (per-shard bit-exact; whole-window only
within f64-reassociation tolerance — self-review fix).
roadmap: M5 [ ]->[~] open in-flight, spec pointer added, dangling
"todo above" dependency reconciled to shipped 170464f; M4-retired
and Tick-coverage struck/done entries pruned (their own text
scheduled deletion at next-milestone-start; permanent rationale
survives in 2026-05-18-brainstorm-embedding-abi-m4-retired.md, still
pointed to by M5's context line). Mirrors the M3 1fbb9c4 precedent
(spec + roadmap-flip in one commit).
Brummel
ae905de00c