- Added `mnemopi.polyphonicRecall` and `mnemopi.enhancedRecall` boolean settings (default off) to `settings-schema.ts` and `loadMnemopiConfig`, applied via the new `configureRecallFeatures()` in `createScopedResources`.
- Made `polyphonicRecallEnabled()`, `enhancedRecallEnabled()`, and `isEnhancedRecallEnabled()` fall back to the configured defaults while `MNEMOPI_POLYPHONIC_RECALL` / `MNEMOPI_ENHANCED_RECALL` env vars still win when set.
- Exported `configureRecallFeatures`/`RecallFeatureFlags` from the package root and `core` barrels; documented the settings in `docs/mnemosyne-memory-backend.md`.
- Added `recall-feature-flags.test.ts` covering defaults, config enablement, and env precedence; the mnemopi changelog hunk also carries the adjacent #2322 entry (same contiguous run).
Fixes#2323: Mnemopi: MNEMOPI_POLYPHONIC_RECALL and MNEMOPI_ENHANCED_RECALL not configurable via config.yml
- Added `mnemosyne.scoping` setting: `global`, `per-project`, and `per-project-tagged`.
- `per-project-tagged` writes to a project-local bank while merging global memories on recall.
- Refactored `MnemosyneSessionState` to manage scoped recall/retain targets and deduplication.
- Updated hindsight tools to route recall/retain through scoped methods.
- Introduced `@oh-my-pi/pi-mnemosyne` workspace package with BeamMemory, recall/retain, FTS, and optional fastembed ONNX embeddings.
- Wired `memory.backend = "mnemosyne"` into the coding-agent settings schema and backend resolver.
- Added `MnemosyneSessionState` for per-session auto-recall on first turn and auto-retain after completed turns.
- Documented configuration, environment variables, and operational notes in `docs/mnemosyne-memory-backend.md`.
can1357