Adds a 14-day schedule list accessible via the Schedule tab.
Keybindings in schedule section:
←/→ (or h/l) shift the 2-week window back/forward by one week
j/k navigate rows
+ open user picker — select a user to assign to the date
d delete the selected day's assignment (y/N confirmation)
r refresh schedule from server
The user picker fetches the user list from the server on first open
(cached for the session). Selecting a user assigns them to the
highlighted date (POST /api/schedule all-or-nothing; 409 conflicts
surface as a status bar error).
The on-call header shows today's scheduled person and the current
window date range. On-call data refreshes on schedule actions.
API additions: GetSchedule, GetCurrentOnCall, AssignSchedule,
DeleteScheduleEntry, ListUsers. ScheduleEntry and User types added.
Niklas Ye
ba7a862789