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/components/layout/Sidebar.tsx

@@ -2,7 +2,7 @@ import { NavLink, useNavigate } from 'react-router-dom'
 import {
   CalendarDays, BookOpen, BedDouble, Globe, Settings,
   FileText, LayoutDashboard, Building2, Users, X, Hotel, Puzzle, CalendarRange, Map, LayoutGrid, UserCog, UsersRound,
-  TrendingUp, Tag, Award, Wrench, Utensils, CalendarClock,
+  TrendingUp, Tag, Award, Wrench, Utensils, CalendarClock, Zap,
 } from 'lucide-react'
 import { useAuth } from '../../contexts/AuthContext'
 import { useModules } from '../../contexts/ModulesContext'
@@ -172,6 +172,7 @@ export function Sidebar({ open, onClose }: SidebarProps) {
                   <NavItem to="/users"       icon={UserCog} label="Сотрудники"       onClick={onClose} />
                   <NavItem to="/loyalty"     icon={Award}   label="Лояльность"       onClick={onClose} />
                   <NavItem to="/maintenance" icon={Wrench}  label="Тех. перерывы"    onClick={onClose} />
+                  <NavItem to="/technical"  icon={Zap}     label="Тех. задачи"      onClick={onClose} />
                   <NavItem to="/floor-map"   icon={Map}     label="План этажей"      onClick={onClose} />
                   {isModuleActive('channel-manager') && (
                     <NavItem