Implemented the foundation of federation architecture with instance identity and connection management: Database Schema: - Added Instance model for instance identity with keypair generation - Added FederationConnection model for workspace-scoped connections - Added FederationConnectionStatus enum (PENDING, ACTIVE, SUSPENDED, DISCONNECTED) Service Layer: - FederationService with instance identity management - RSA 2048-bit keypair generation for signing - Public identity endpoint (excludes private key) - Keypair regeneration capability API Endpoints: - GET /api/v1/federation/instance - Returns public instance identity - POST /api/v1/federation/instance/regenerate-keys - Admin keypair regeneration Tests: - 11 tests passing (7 service, 4 controller) - 100% statement coverage, 100% function coverage - Follows TDD principles (Red-Green-Refactor) Configuration: - Added INSTANCE_NAME and INSTANCE_URL environment variables - Integrated FederationModule into AppModule Refs #84 Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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