feat: Graphiti/Mem0 export dialects + per-memory forgetting-rate (v0.12.0)#6
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…ting-rate (v0.12.0) Phase 15 — two orthogonal features with pre-sprint lint cleanup. **Graphiti/Mem0 export dialects** (P2 completion): - `MemoryGraph.to_graphiti()` / `to_graphiti_json()` — nodes → episodes, edges → relations (similar_to, weight=cosine). Graphiti-compatible shape. - `MemoryGraph.to_mem0()` / `to_mem0_json()` — nodes → memory records with 16-char SHA-256 hash, score (decay_weight or 1.0). Mem0-compatible shape. - `MemoryGraphExporter.save_graphiti()` / `save_mem0()` — atomic file writes. - `GET /export/graph/graphiti` and `GET /export/graph/mem0` on the unified API. **Per-memory forgetting-rate override** (P3): - `MemoryMetadata.forgetting_rate: Optional[float]` — validated > 0. - `salience()` uses `effective_half_life = half_life_days / forgetting_rate` when set; rates > 1 accelerate decay, < 1 slow it. Default path unchanged. - `EnrichedMemoryStore.store(..., forgetting_rate=...)` + API `POST /memories/store`. **Pre-sprint cleanup**: 6 ruff lint violations fixed; PLAN.md version header corrected from stale v0.10.0 → v0.11.0. 445 tests passing (35 new: 16 test_graphiti_mem0 + 10 test_forgetting_rate + 9 API). https://claude.ai/code/session_01JDunGDgWBNwSHjHYvLppF6
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Summary
MemoryGraph.to_graphiti()/to_mem0()methods emit graph data in the shapes Graphiti and Mem0 expect, so external graph tools can ingest kohaku memories without translation. Two new API endpoints:GET /export/graph/graphitiandGET /export/graph/mem0.MemoryMetadata.forgetting_rate: Optional[float]lets callers tune decay per-memory at store time.salience()useseffective_half_life = half_life_days / forgetting_rate; rates > 1 accelerate forgetting, < 1 slow it. Exposed viaPOST /memories/store.PLAN.mdversion header corrected.Test plan
python -m pytest python/tests/ api/ -q→ 445 passed, 0 failedruff check .→ cleancargo test→ 9 Rust unit tests greencargo clippy -- -D warnings→ cleanGET /export/graph/graphitireturnsformat: "graphiti"withepisodesandrelationskeysGET /export/graph/mem0returnsformat: "mem0"withmemoriesarray and 16-charhashper entryPOST /memories/storewithforgetting_rate: 0.5accepted;forgetting_rate: 0.0returns 422https://claude.ai/code/session_01JDunGDgWBNwSHjHYvLppF6
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