release-readme: the root README written last, honestly — crate family table with per-engine honest postures (ADR-016 compile-time identity, deployment.md as the boundary), mem-carried usage sketch compile-checked and executed against the real API, contract-suite pointer (three engines, one pinned contract), license note; LICENSE-MIT + LICENSE-APACHE per the family pattern (substrate notice untouched per ADR-018); CHANGELOG seeded with the 0.1.0 contract-v1 entry; per-crate readme wiring decided + landed (pointer-style per-crate readmes, readme fields wired on the four published crates); honesty trace list in task Notes; task -> completed

CHANGELOG.md

@@ -0,0 +1,46 @@
+# Changelog
+
+All notable changes to this crate are documented here. The format is
+based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/), and
+this crate adheres to [Semantic Versioning](https://semver.org/).
+
+## [0.1.0] - 2026-10-11
+
+Initial crates.io release of the alkstore family: one reactive store
+contract (the pinned contract v1 surface) with three engine
+implementations.
+
+The core crate (`alkstore`) defines the unified trait surface —
+notify/listen with transactional wake discipline, streams with
+per-consumer offsets and consumer-invoked `trim_to`, queues with
+visibility-timeout claims, backoff, dead-lettering and the opt-in
+retention sweep, TTL named locks, the outbox helper
+(`outbox_enqueue_tx` + `run_once`), the `@every` scheduler, and the
+caller-held `TxHandle` seam (drop = rollback) — plus the value types,
+error taxonomy, and the naming / reserved-namespace contract. No
+runtime capability surface: engine identity is compile-time, and the
+deployment honesty lives in the engine crates' postures plus the
+documented deployment matrix ([ADR-016]).
+
+Three engines ship the same contract v1 surface:
+
+- `alkstore-sqlite` — single-host, file-backed, over rusqlite and the
+  forked honker-core substrate carried in-tree (bridged sync/async seam,
+  `data_version` watcher wake).
+- `alkstore-postgres` — multi-host native, natively async over
+  tokio-postgres + deadpool-postgres with a dedicated non-pooled
+  LISTEN connection per LISTEN-ing process.
+- `alkstore-mem` — honest-ephemeral in-process state: full contract v1,
+  no durability, never fleet-valid; the wasm32-compile-clean family
+  member.
+
+All three engines run the same contract-suite rows
+(`alkstore-contract-suite`) against their own factory — three engines,
+one pinned contract. The contract version is the core crate's semver
+([ADR-017]); this 0.1.0 release closes the pre-release contract-change
+window, and ADR-017 §2's class-1 amendment events terminate at it.
+
+[0.1.0]: https://git.alk.dev/alkdev/alkstore/releases/tag/v0.1.0
+
+[ADR-016]: docs/architecture/decisions/016-deployment-honesty.md
+[ADR-017]: docs/architecture/decisions/017-contract-versioning.md