Catalog, Lineage & Graph System

#[0.8.0] - 2026-02-23

#Added

• Catalog Plugin - Schema Discovery

  • Discover and compare schemas across PostgreSQL, MySQL, MongoDB, and OpenAPI services
  • Export schemas as Mermaid diagrams or JSON Schema
  • Automatic schema persistence and stale entry pruning
  • Tools: discover_postgresql, discover_mysql, discover_mongodb, discover_openapi, compare_schemas, export_diagram

• Lineage Plugin - Data Flow Tracking

  • Track data flows between agents, databases, APIs, and files
  • Automatic SQL parsing to extract table-level source and target dependencies
  • Decorator-based Python function lineage tracking
  • Impact analysis to identify downstream entities affected by a change
  • Tools: capture_sql_lineage, capture_python_lineage, register_flow, trace_lineage, analyze_impact

• Graph Backend

  • Shared graph store used by Catalog and Lineage plugins to cross-reference entities
  • Local filesystem backend with NetworkX persistence
  • Traversal and impact analysis algorithms built in

• Memory Plugin - Contradiction Detection

  • New contradiction checker prevents conflicting facts from being stored
  • Classifies conflicts as NO_CONFLICT, EVOLUTION (auto-replace), or CONTRADICTION (blocked)

#Fixed

• Memory Plugin

  • Fixed silent result drops caused by zero-vector embeddings producing NaN similarity scores
  • Fixed invalid SQL error in update_memory when recalled chunks had no valid IDs
  • Fixed contradiction checker silently failing on markdown-wrapped LLM responses
  • Added in-session embedding cache to Supabase backend to avoid duplicate API calls

• Catalog Plugin

  • Fixed blocking file I/O in schema persistence (now fully async)
  • Fixed compare_schemas always returning zero differences for MongoDB schemas
  • Cloud deployments now correctly report when schema persistence is unavailable rather than silently succeeding

• Lineage Plugin

  • Fixed SQL parser incorrectly lowercasing quoted case-sensitive identifiers (e.g. "MyTable")