- Removed export leakage by demoting many helper and const symbols to module-local scope.
- Renamed underscore-prefixed internals and cache fields, then updated related references and `satisfies never` checks.
- Deleted obsolete logic branches and helpers, including harmony-stream interruption flow and unused benchmark runtime helpers.
- Updated Biome config and manifests by broadening lint coverage and removing an unused `@napi-rs/cli` dev dependency.
- Adjusted tests and utilities to use renamed test helpers and remove redundant private test-only helpers/locals.
- Added `HindsightSessionState` to `AgentSession` and bound hindsight lifecycle hooks to session state.
- Removed global hindsight state/queue handling and replaced it with per-session `HindsightRetainQueue` batching and scoped flushing.
- Reworked recall, reflect, and retain tools to use `session.getHindsightSessionState()` instead of sessionId-based lookup.
- Updated SDK/task/backend/controller flows to pass `session`/`parentHindsightSessionState`, scope `/memory` behavior, and document it in changelog.
- Added mental-model settings and config defaults for enablement, auto-seed, refresh interval, and render budget.
- Added built-in mental-model seeds and scope-aware rendering with `<mental_models>` extraction, truncation, and tag handling.
- Added `/memory mm` aliases and handlers for list, show, refresh, history, seed, reload, and delete commands.
- Added client APIs and bootstrap/cache wiring so snippets refresh and inject into prompts on startup.
- Added tests covering seed scope behavior, rendering caps, diffs, and backend/session reload behavior.
- Loaded recall, reflect, and retain tool descriptions from new markdown prompt files.
- Updated the retain tool to accept batched `items`, enqueue each memory entry, and return the queued-memory count.
- Reworked retain tests to pass the array payload, assert pluralized queue messages, and confirm single-batch flush behavior.
- Added per-session retain queues with size/time auto-flush, recursive drain, and lifecycle flushes on end/clear/enqueue.
- Changed `hindsight-retain` to validate session state, enqueue writes, and return `Memory queued.` immediately.
- Added `notice` event support and handlers that route error/warning/status messages with source-aware formatting.
- Updated client and tests with shared request mapping, `RequestOptions`, `buildMemoryItem`, and expanded batch/list/doc APIs.
- Removed the `@vectorize-io/hindsight-client` dependency from both package manifests.
- Added a local `HindsightApi` client and changed `createHindsightClient` to instantiate it.
- Replaced `HindsightClient` imports/types with `HindsightApi` across backend, bank, and tests.
- Implemented `HindsightApi` `#request` handling with `fetch`, safe JSON parsing, and `HindsightError` on failures.
- Added `hindsight.scoping` and `HINDSIGHT_SCOPING` with global, per-project, and per-project-tagged modes.
- Migrated legacy `raw.hindsight` handling to scoping-based behavior and removed deprecated `dynamicBankId`/`agentName` keys.
- Replaced `deriveBankId` with `computeBankScope`, returning `bankId` plus optional retain/recall tags by mode.
- Forwarded scoped tags through memory ops so recall and retain/reflect calls use `tags`, `tagsMatch`, and `recallTags`.
- Validated `scoping` values from env/settings, warning and defaulting to `per-project-tagged` when invalid.
- Standardized Hindsight context output to emit `<memories>` blocks and updated retention stripping to remove both `<memories>` and legacy `<hindsight_memories>`/`<relevant_memories>` tags.
- Renamed built-in Hindsight tool entry points and labels from `hindsight_retain`/`hindsight_recall`/`hindsight_reflect` to `retain`, `recall`, and `reflect`, including tool availability checks.
- Added a new optional `beforeAgentStartPrompt` hook to `MemoryBackend` and implemented it in the Hindsight backend to recall long-term context for the first turn.
- Updated `AgentSession` startup flow to inject the recalled context into the turn-specific system prompt before the first response is generated.
- Preserved `<hindsight_memories>` tags in Hindsight developer instructions and added tests for first-turn injection and state caching.
- Added `memory.backend` and `hindsight.*` settings schema with migration from `memories.enabled` legacy mode.
- Added Hindsight memory backend runtime modules for resolved config, client creation, bank ID derivation, and state lifecycle.
- Added off/local/hindsight backends and resolver wiring across SDK, commands, and compaction context.
- Added `hindsight_recall`, `hindsight_reflect`, and `hindsight_retain` tools with schema validation and backend gating.
- Added Memory tab metadata and symbols to expose backend selection in the settings UI.
- Added package export barrels and tests for bank ID, content formatting, and hindsight config env precedence.
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