- Remove Card wrappers and gray backgrounds from routine detail
- Use max-w-2xl container layout like issue detail page
- Add icons to tabs (Clock, Play, ListTree, Activity) matching issue tabs
- Make activity tab compact (single-line items with space-y-1.5)
- Create shared RunButton and PauseResumeButton components
- Build user-friendly ScheduleEditor with presets (hourly, daily, weekdays, weekly, monthly)
- Auto-detect timezone via Intl API instead of manual timezone input
- Use shared action buttons in both AgentDetail and RoutineDetail
- Replace bordered run history cards with compact divided list
Co-Authored-By: Paperclip <noreply@paperclip.ing>