7-task workplan to give worker agents efficient MCP access to domain/repo scope and capabilities without exploring source repos directly. Phase 1 (code): repo_id FK on CapabilityCatalog, capabilities in get_domain_summary, new get_capability_profile MCP tool. Phase 2 (data): populate missing repo descriptions, back-fill repo_id on 25 existing entries, register capabilities for 3 empty domains. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>