Update CHECKLIST.md and REWRITE_PLAN.md to reflect the current
post-rewrite status and remaining tasks.
- Add input validation to /api/hafas route to enforce request shape
and cap results
- Fix SSR crash in useBikeRoute by using relative fetch URLs
- Wire CalendarPanel to fetch calendar events and merge them into the
global events store
Mark completed items in CHECKLIST.md. Update API tests to use
NextRequest instead of Request and fix type assertions. Add missing
imports in unit tests for calendar and countdown utils.
fegger