Why:
- first runnable slice of ADR-0012's resource-lifetime rules and ADR-0015's package layout: app-lifetime clients built once in the lifespan, released via explicit dependencies.
Changes:
- Settings split into per-domain nested settings (postgres/minio/ingestion/qdrant/app/logging); FastAPI app wired with /healthz, /readyz and a /v1 router; Postgres/MinIO/Qdrant adapters and SQLAlchemy models for tenants, API keys, source files, ingestion jobs/events.
Add the initial src/ package (empty FastAPI entrypoint, Settings stub),
an .env.example placeholder, and expand .gitignore for test/coverage
artifacts, environment files, and local Claude Code overrides. Also
documents the Alembic async bootstrap command in ADR-0009.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
