Replaces the existing Go-based f1-stream service with a new Python/FastAPI
backend as the foundation for the rebuilt F1 streaming aggregation service.
- New FastAPI backend with health and root endpoints
- Python 3.13 slim Dockerfile (replaces Go multi-stage build)
- Updated Terraform deployment (port 8000, reduced resources)
- Buildx-based redeploy.sh with --platform linux/amd64
- Added Woodpecker CI pipeline for automated builds
- Removed all old Go source, node_modules, static assets
