feat: add category field to housekeeping tasks + TechnicalPage for maintenance tasks

- Add migration 025 to add `category` column (housekeeping/maintenance) to housekeeping_tasks
- Backend: filter by ?category= in GET, store category in POST, allow patching category
- API client: HkPayload + housekeeping.list() now support category param
- HousekeepingPage: filters by category=housekeeping so maintenance tasks don't appear
- RoomContextMenu: priority sub-form for dirty/cleaning status, tech task creation inline form
- BookingCalendar: accepts onMaintenanceTaskCreate prop, passes priority to onRoomUpdate
- CalendarPage: handleRoomUpdate creates task for dirty+cleaning (with priority), new handleMaintenanceTaskCreate for category=maintenance tasks
- TechnicalPage: new page for viewing/creating/updating maintenance tasks
- App.tsx: /technical route added
- Sidebar: Тех. задачи nav item added under Управление

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/lib/api.ts

@@ -215,10 +215,11 @@ export const api = {
 
   // ── Housekeeping ──────────────────────────────────────────────────────────
   housekeeping: {
-    list: (slug: string, params?: { date?: string; status?: string }) => {
+    list: (slug: string, params?: { date?: string; status?: string; category?: string }) => {
       const qs = new URLSearchParams()
       if (params?.date) qs.set('date', params.date)
       if (params?.status) qs.set('status', params.status)
+      if (params?.category) qs.set('category', params.category)
       const q = qs.toString()
       return req<HousekeepingTask[]>('GET', `/api/hotels/${slug}/housekeeping${q ? `?${q}` : ''}`)
     },
@@ -554,6 +555,7 @@ function toBookingPayload(b: Partial<BookingPayload>): Record<string, unknown> {
 export interface HkPayload {
   room_id?: string; type?: string; priority?: string
   status?: string; assignee_id?: string; notes?: string; due_date?: string
+  category?: string
 }
 
 export interface HkSettings {