Contributing to DegenFeed 🟢

Branch model: main protected, wip/* feature branches.
Commits: Conventional Commits, enforced by commitlint.
Frontend gates: Biome lint, tsc --noEmit, Vitest, Playwright E2E.
Backend gates: ruff, mypy, pytest.
Adding a protocol adapter? Implement the adapter interface, add fixture-based ingestion tests, and document the network in Supported Protocols.