a82c543b405a4db16f35fa1735c8eba411fabf64
- Remove the wave-2 lint suppressions from substrate/mod.rs; the six genuinely dead surfaces the removal exposed are cut, not suppressed, and registered D-32..D-36 in PROVENANCE.md (arg_opt_i64, ops::now_unix, queue_next_claim_at, Writer::try_acquire, UpdateWatcher::spawn, SharedUpdateWatcher::new); test-observation items (subscriber_count, the poll-interval default re-export) are honestly #[cfg(test)]-gated - Contract suite: eight new version-stamped backlog rows (extent-clamp + boundary totality, duration-refusal, encode_payload round-trip, PayloadTooLarge-never-produced SQLite arm, drop=rollback no-ghosts, in-tx read-your-own-writes, enqueue-opts resolution, receiver close/save arms) - Fix the exemplar row's real-engine sequencing defect: the held tx handle across the with_tx leg deadlocked any single-writer factory (mock-invisible; ADR-007's parking is the pinned behavior) - SQLite factory: SqliteFactory in the new tests/contract_suite.rs target; all nine rows green against it; the factory contract (isolation + idempotent teardown) pinned - Engine lib docs: the single-host and writer-parking posture statements surfaced under # Posture - Gates: build/test/clippy -D warnings/fmt green; coverage 93.6% lines, misses confined to error arms
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