alkstore/tasks/review-wave-6.md at 76c06e42a98566756d6dee026274d5349e7470db

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glm-5.3-flash 5abd351c86 Wave-6 decomposition (mem engine): eleven tasks per the pg-wave rhythm — foundations (crate scaffold, MemStore::new isolation, guarded state core, wake routing, wasm32 gate from birth), seam-tx (the load-bearing tx overlay: eleven staged _tx methods, commit-merge + wake-at-commit — pg-fix-tx-wake's discipline structural from the start, drop = discard trivial, with_tx panic posture), mechanisms mutually parallel (notify-listen close-at-engine-drop/no-replay/never-coalesced; queues = ADR-010 machine driver-free with the equal-jitter curve and opts resolution as ADR-012 §2's third owner; streams log+offsets+trim; locks TTL registry, no busy-path analog), scheduler-outbox (tick/catch-up-64/leadership through the __alkstore_scheduler lock, engine-uniform per ADR-009 §4; outbox over queues with the 60/5/5 seam stamp), integration (suite third StoreFactory column green on host under a current-thread flavor, wasm32 acceptance items, engine-mem.md to implementation-complete), and the review-wave-6 gate (born-pinned audit: conformance read, discharge-map wiring, wasm items, three-way equivalence green, class-1 window discipline). Window riders: suite-harness-current-thread — the wave's one suite-side pre-task, past_stamp_sleep's blocking sleep goes async per review 003's properties.rs:1683 posture note, enabling the current-thread flavor; pg-fix-scheduler-tick-seam — review 003 Finding 1, the cfg(test) transient-fault seam driving the real tick_with_retries through retry-then-success and exhaustion arms (the last uncovered wave-4 hardening arm, sqlite-commit-error-arm pattern). Task hygiene: pg-fix-open-path frontmatter fixed (unquoted 'max_size: 0' colon-space inside the name scalar broke YAML parsing — taskgraph validate had been red one-error since the wave-4 fix-batch decomposition; also restores review-wave-4-fixes' dependency resolution). implementation.md: wave-6 table row → decomposed, task-set listing with the parallelism note (rider + pre-task independent of the mem chain; rider closes before the gate), wave-6 decomposition bullet in the review-rounds record. Docs-only change; verified taskgraph validate (60 tasks, no cycles), cargo fmt --check, cross-reference read

2026-10-10 09:57:01 +00:00

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Description

The wave-6 review gate (the plan's §Review gates, wave 6; the born-pinned gate). Code-read the alkstore-mem engine against the contract and the pinned ADR-024 text, and audit:

Conformance read: engine-vs-contract line by line, mirroring the wave-3/4 gate pattern — every trait surface against core-contract.md and the pinning ADRs (007/008/009/010/015/019/ 020/021/023), the tx overlay against ADR-024 + engine-mem.md §The tx overlay (commit-merge atomicity, wake-at-commit, drop = discard, panic-through-unwind).
The third column as the compatibility instrument born pinned: the mem column's wiring read row-by-row against the discharge map (which rows carry, which engine-shaped rows omit and why — the asymmetry classification, ADR-024 §3); PayloadTooLarge non-occurrence arm present; three-way arithmetic equivalence actually asserted green (backoff curve, opts resolution — the ADR-012 §2 one-owner rule's third owner), plus the derived-queue naming row composing identically.
wasm32 acceptance audit (ADR-024 §5): the compile gate clean, tokio feature subset verified on the manifest, no blocking calls in mem internals, the current-thread flavor actually enforced by the column's tests.
engine-mem.md read against the implemented engine; the deployment matrix's mem rows (deployment.md, landed with ADR-024) still true as implemented (honesty carriers: identity + docs + matrix — nothing runtime invented). Gate may flip engine-mem.md to stable if the read is clean.
The rider closed: pg-fix-scheduler-tick-seam's arms verified (review 003 Finding 1 discharged into this window; Findings 2–3 confirmed still parked for wave 7).
Contract-window discipline: the class-1 amend-in-place window is still open — any wobble the third implementation surfaced must appear as resolved ADR text (or be recorded as a finding with its disposition), not as a silent divergence between suite row and engine behavior.

Acceptance Criteria

Full conformance code-read recorded (findings + dispositions inline in this task's Notes, mirroring review-wave-3/4 style)
Suite mem column green on host, 25-row set wired per the classification; three-way equivalence rows green
wasm32 compile gate + feature-subset + current-thread flavor verified, recorded
The rider's arms verified; Finding 1 disposition recorded
Workspace gates re-run green this session (cargo build, cargo test, clippy -D warnings, fmt)
engine-mem.md disposition decided (stable flip or follow-up) and implementation.md's wave-6 row updated

References

docs/plans/implementation.md §Wave 6, §Review gates (wave 6 entry)
docs/architecture/decisions/024-mem-engine.md (the charter this gate audits code against)
docs/architecture/engine-mem.md
tasks/review-wave-3.md / tasks/review-wave-4.md (the gate pattern)
docs/reviews/003-wave-5-general-review.md (Finding 1's disposition trail; Findings 2–3's wave-7 park)

Notes

To be filled by implementation agent

Summary

To be filled on completion

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