release-crate-docs: crate docs final pass — doc gate green with -D warnings posture recorded in AGENTS.md, warn(missing_docs) adopted on the four published crates (audit probe 0; Error enum+fields, sqlite substrate fuzz-surface fns filled), accuracy pass fixed core drifts (trim_to wake nuance, ADR-023 §2 domain rules + shared paragraph, QueueOpts gloss, MemStore::new exception) and engine postures (eleven-vs-ten tx-method count, spawn_blocking rationale via sync substrate, one-host cross-process honesty element), spec-side aligned (pg locks family + row-backed wording, mem clock-accessor home), two boundary-wording dispositions recorded for release-contract-window-close (try_recv arms, 8000-byte <= reading), queue round-trip doctest landed in alkstore-mem crate docs; task -> completed with Notes + Summary

docs/architecture/engine-mem.md

@@ -58,7 +58,10 @@ daemons, the mem engine realizes with process-owned state:
 - **No background machinery to bootstrap** — no schema bootstrap, no
   watcher thread (nothing cross-connection to poll), no forwarder.
   The only async machinery is tokio-time-driven: lock TTLs, the
-  scheduler's boundary waits, and wake delivery.
+  scheduler's boundary waits, and wake delivery. All timestamps read
+  the process clock through one internal accessor — no server clock
+  to defer to, no per-mechanism clock reads (the wasm-posture note,
+  [ADR-024](decisions/024-mem-engine.md) §5).
 - **Wake substrate**: in-process channels. Wakes deliver at the
   commit boundary directly to each open receiver — no batching
   boundary exists, so coalescing is not applicable; per-subscriber