feat: страница Оборудование — рабочие места, агенты, ККТ и принтеры

- EquipmentPage: CRUD рабочих мест, генерация кода сопряжения с таймером,
  добавление устройств (ККТ/принтер, USB/сеть), онлайн-статус агентов
- api.ts: интерфейсы Workstation, WorkstationDevice + api.workstations.*
- Sidebar: пункт «Оборудование» в группе Настройки

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

src/lib/api.ts

@@ -315,6 +315,28 @@ export const api = {
       req<{ room_id: string }>('POST', `/api/hotels/${slug}/chat/direct/${otherUserId}`),
   },
 
+  // ── Workstations ──────────────────────────────────────────────────────────
+  workstations: {
+    list: (slug: string) =>
+      req<Workstation[]>('GET', `/api/hotels/${slug}/workstations`),
+    create: (slug: string, name: string) =>
+      req<Workstation>('POST', `/api/hotels/${slug}/workstations`, { name }),
+    update: (slug: string, id: string, name: string) =>
+      req<Workstation>('PATCH', `/api/hotels/${slug}/workstations/${id}`, { name }),
+    remove: (slug: string, id: string) =>
+      req<void>('DELETE', `/api/hotels/${slug}/workstations/${id}`),
+    pairCode: (slug: string, id: string) =>
+      req<{ code: string; expires_at: string }>('POST', `/api/hotels/${slug}/workstations/${id}/pair-code`),
+    listDevices: (slug: string, id: string) =>
+      req<WorkstationDevice[]>('GET', `/api/hotels/${slug}/workstations/${id}/devices`),
+    addDevice: (slug: string, id: string, data: Partial<WorkstationDevice>) =>
+      req<WorkstationDevice>('POST', `/api/hotels/${slug}/workstations/${id}/devices`, data),
+    updateDevice: (slug: string, id: string, deviceId: string, data: Partial<WorkstationDevice>) =>
+      req<WorkstationDevice>('PATCH', `/api/hotels/${slug}/workstations/${id}/devices/${deviceId}`, data),
+    removeDevice: (slug: string, id: string, deviceId: string) =>
+      req<void>('DELETE', `/api/hotels/${slug}/workstations/${id}/devices/${deviceId}`),
+  },
+
   // ── Hotels ────────────────────────────────────────────────────────────────
   hotels: {
     get: (slug: string) =>
@@ -945,6 +967,31 @@ export interface ChatMessage {
   createdAt: string
 }
 
+export interface WorkstationDevice {
+  id: string
+  workstationId: string
+  type: 'kkt' | 'printer'
+  name: string
+  connection: 'usb' | 'network'
+  networkHost?: string
+  networkPort?: number
+  purpose: 'fiscal' | 'kitchen' | 'bar' | 'receipt' | 'other'
+  config: Record<string, unknown>
+}
+
+export interface Workstation {
+  id: string
+  hotelId: string
+  agentId: string | null
+  name: string
+  hostname: string | null
+  ipAddress: string | null
+  isOnline: boolean
+  lastSeen: string | null
+  createdAt: string
+  devices: WorkstationDevice[] | null
+}
+
 function toHotelPayload(h: HotelPayload): Record<string, unknown> {
   const out: Record<string, unknown> = {}
   if (h.name         !== undefined) out.name           = h.name