bee86b0dbd45b2b8a1f5312220707e738c12891d
- No sibling (alkstore) dependency in-core; reactivity is deployment-layer composition above the facade — cadence stays embedder-owned (ADR-005), with alkstore the named substrate for it; in-crate notify/scheduler/queues/invalidation hooks are non-goals. - Fleet sweeper lock pinned as 'named exclusive sweep lease' semantics; shipped provider unchanged (pg advisory clause); provider swaps are ADR-007-shaped substitution doors. - Composition contract for downstream ADRs: co-tenancy of CAS/GC state + reactive machinery + consumer/liveness tables on one fleet host; no-cross-store-atomicity ruled; compensation rests on idempotent re-puts, windowed deletes, sweeps-as-report-data. - OQ-11 resolved (the register's one live circular hedge): engine features pull their own driver clusters — sqlite becomes feature 'sqlite' (default-on, carries rusqlite); 'kv'/'large' tier features retired; 'local' ungated; pg-pure builds are supported, non-default. Deciding fact already in-tree (REQ-2/ADR-009). - requirements.md: UC-4/REQ-5 records the composition facts (operator record 2026-10-11, corroborated by alkstore's consumer-inventory). - Publish guard stated pre-code: facade ships before publish; semver-is-contract from first publish (alkstore ADR-017 discipline). - Amended accepted ADRs' feature wording (ADR-010 §1, ADR-011 §3/§4, ADR-003) with supersession notes; README/overview/open-questions/ backends/store-api/gc aligned; parked index now empty. Verification: docs-only round (no Rust surface touched); full-tree single-value check on the feature graph and sweep-lease wording.
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