Modular monolith: .NET 10 backend + Next.js BFF. Tools plug in module-by-module (today: YouTube Uploads, YouTube Comments).
- Local testing — painless local dev: stable tunnel, Google OAuth on localhost, Slack Socket Mode (dev-only), and the signed-payload harness. Start here to run things locally. (Future agent sessions: the "Agent notes" section at the top records the invariants.)
- Architecture guide — the authoritative backend spec.
- Adding a module.
cp .env.example .env # fill in secrets as needed (see docs/dev/local-testing.md)
make up # postgres + redis + backend + frontend
make test # build + full backend test suite