v1.2.0 - Episode Aging & Entity Graph Linking

What's Changed in v1.2.0

• ⏳ Automatic Episode Aging & State Decay:
  • Automatically transitions episodes active ➔ cooling (after 30 days) ➔ historic (after 90 days).
  • Prefetch relevance ordering prioritizes active over cooling and historic.
  • Added CLI command agy_memory.py age-episodes.
  • optimize now automatically runs lifecycle decay.
• 🔗 Entity Graph & Relationship Linking:
  • Added entity_links table with bidirectional indexing & FTS5 search.
  • Automated 1-hop multi-entity expansion during prefetch (e.g. querying a service automatically pulls its linked host facts).
  • Added CLI commands link, unlink, and FastMCP tool link_entities_mcp.
  • sync_turn now extracts and stores entity relationships automatically.
• 🧪 Test Suite Expansion: Added 4 new integration tests (28 tests total, 100% passing).