Deploy frontend after main CI

[ridecontrol]

What changed

• moves the production frontend deployment into the main CI workflow
• makes deployment depend directly on the successful CI job for the same main push
• keeps production build metadata linked to the merge commit and its pull request
• removes the secondary workflow_run deployment workflow

Why

The prior deployment depended on a second GitHub workflow_run event. Previous merges deployed successfully, but the latest successful main CI run did not create that follow-up run, leaving Cloudflare on the older frontend build.

Impact

Pull requests continue to run CI without deploying. Every merge to main now runs CI and then deploys that exact SHA to the ridecontrol-frontend Worker using the existing protected Cloudflare token.

Validation

• actionlint .github/workflows/ci.yml
• bun run ci
• 270 unit tests passed
• TypeScript, Biome, Tailwind diagnostics, and production build passed