feat(duty): make duty time range a single-select dict like work plans

Add duty_time_range dictionary with day/night presets, parse typed ranges on ensure, and replace time pickers with allow-create select in the schedule dialog.

Co-authored-by: Cursor <cursoragent@cursor.com>

web-admin/src/api/duty.ts

@@ -91,8 +91,9 @@ export function fetchDutyUserOptions() {
 }
 
 export function ensureDutyDict(data: {
-  dictType: 'duty_shift_type' | 'duty_work_plan'
+  dictType: 'duty_shift_type' | 'duty_work_plan' | 'duty_time_range'
   label: string
+  preferredValue?: string
 }) {
   return request.post<{ label: string; value: string }>({
     url: '/web/admin/duty/dict/ensure',