doobidoo/mcp-memory-service v10.30.0

v10.30.0 - Memory Evolution: Non-destructive updates, staleness scoring, conflict detection

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Memory Evolution — P1 + P2 + P3

This release introduces a complete Memory Evolution system: memories can now be updated without destroying history, grow stale over time with configurable decay, and automatically detect contradictions with each other.

Added

P1: Non-destructive Versioned Updates

• update_memory_versioned() creates a child node from an existing memory via SAVEPOINT-atomic operation, marking the parent as superseded_by the new version
• Schema migration 011_memory_evolution_p1.sql adds parent_id, version, confidence, last_accessed, and superseded_by columns
• Active memories filtered with WHERE superseded_by IS NULL — superseded versions are invisible to normal retrieval but preserved for lineage queries

P2: Staleness Scoring with Time-Decayed Confidence

• _effective_confidence(): computes confidence × max(0, 1 − staleness × decay_rate)
• retrieve_with_staleness(): overfetch strategy (n_results × 3) with confidence filtering
• min_confidence parameter added to the base retrieve() interface (all backends: SQLite-Vec, Cloudflare, Hybrid)
• Configurable via MEMORY_DECAY_WINDOW_DAYS env var (default: 30 days)

P3: Automatic Conflict Detection and Resolution

• Conflict detection runs on every memory_store() call — cosine similarity > 0.95 + Levenshtein divergence > 20% flags a contradiction
• Contradictions linked as contradicts graph edges for easy querying
• New MCP tools: memory_conflicts (list unresolved contradictions), memory_resolve (supersede loser, boost winner confidence to 1.0)
• New REST endpoints: GET /api/conflicts, POST /api/conflicts/resolve
• No new dependencies — uses stdlib difflib.SequenceMatcher

30 new tests: 21 for P1/P2, 9 for P3 (1,514 tests total)

Fixed

• Storage interface consistency: min_confidence parameter added to base.py, cloudflare.py, and hybrid.py retrieve() signatures

Related Issues

• Closes #635 (Memory Evolution design doc)
• Closes #636 (Memory Evolution feature request)
• Related: #637 (sync-in-async tech debt, tracked separately)

Full changelog: https://github.com/doobidoo/mcp-memory-service/blob/main/CHANGELOG.md