Core foundation for repository group analysis:
- Type system: ContractType, ExtractedContract, StoredContract, CrossLink
with optional `service` field for intra-repo matching
- Config parser for group.yaml (repos, detection flags, matching thresholds)
- Contract registry storage with atomic writes
- Exact matching engine with per-type normalization (HTTP, gRPC, topic)
and intra-repo support (different services within same repo can match)
- Extract LadybugDB pool-adapter from MCP backend for reuse by sync pipeline
- Git staleness checker for group status reporting
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>