- Define sport, league, match, score, event, lineup, and standings contracts without provider-specific fields.
- Build a demo sports provider and provider registry/configuration seam for future API adapters.
- Add cached, throttled server-side sports data procedures with no direct browser-to-provider calls.
- Create the dark premium visual system, responsive global layout, and shared loading/empty/error components.
- Build the live scores home feed with live counter, state tabs, sport filters, league grouping, and 45-second query refresh.
- Build score cards that adapt scores and metadata for football, basketball, tennis, cricket, rugby, and other sport types.
- Build match details with scoring breakdowns, event timeline, lineups, and designed fallback states.
- Build league standings view with sport and league context plus fallback states.
- Add global search for matches, teams, and leagues across all match states.
- Add localStorage-backed favorites with a pinned matches bar that persists across page reloads.
- Add responsive mobile navigation and verify desktop, tablet, and mobile layouts.
- Add Vitest coverage for provider and router behavior, then run type checking and tests.
- Document the provider adapter integration contract and create a release checkpoint.
- Implement an interactive mobile navigation drawer and verify desktop, tablet, and mobile layouts.
- Add tRPC router coverage for sports feed, match, league, and standings procedures, then rerun checks.
- Reverify the newly added mobile navigation control at desktop and mobile breakpoints.
- Save the verified release checkpoint for the completed score center.