* refactor: convert getBusyTimes to service class with dependency injection - Create BusyTimesService following UserAvailabilityService pattern - Add DI tokens, module, and container setup for BusyTimesService - Update all usage locations to use service instead of direct function calls - Maintain existing function signatures for backward compatibility - Add legacy exports to ensure smooth transition - Update type references in trpc util to use service prototype - Fix linting issues by making legacy exports async with proper imports - All tests pass and type checking succeeds Co-Authored-By: morgan@cal.com <morgan@cal.com> * refactor: busy time service * fix: api v2 eslint plugins version mismatch * chore: bump platform libs * chore: bump platform libs * fix: missing di busyTimesModule in slots service --------- Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com> Co-authored-by: morgan@cal.com <morgan@cal.com> Co-authored-by: Morgan <33722304+ThyMinimalDev@users.noreply.github.com>