The teams schema (teams table, team_memberships table, team_id column on
projects) was not included in the runtime migrations, causing existing
databases to fail on startup.
This adds the teams migration to _run_migrations() so it runs automatically
on application startup for databases that don't have the teams schema yet.
- Backend: Python 3.12 with FastAPI, SQLAlchemy, boto3
- Frontend: React 18 with TypeScript, Vite build tooling
- Updated Dockerfile for multi-stage Node + Python build
- Updated CI pipeline for Python backend
- Removed old Go code (cmd/, internal/, go.mod, go.sum)
- Updated README with new tech stack documentation
