feat: TTLock diagnostics — test cloud API button + fix api_server SELECT bug

- Fix: api_server was missing from SELECT in issue-card route (always fell back to EU default)
- Add "Проверить API" button in Step 1 that calls ttlock:test_api via agent
- Agent: testCloudApi() — gets OAuth token + lists locks, returns count
- Agent: apiPost() now includes response body in error message (was just HTTP status)

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

src/pages/TTLockPage.tsx

@@ -3,7 +3,7 @@ import * as XLSX from 'xlsx'
 import {
   KeyRound, Save, RefreshCw, Check, X, AlertCircle,
   ChevronDown, ChevronRight, Trash2, Plus, Eye, EyeOff,
-  Lock, Unlock, Info, HardDriveDownload, Zap, Terminal, Upload,
+  Lock, Unlock, Info, HardDriveDownload, Zap, Terminal, Upload, Wifi,
 } from 'lucide-react'
 import { api, type TTLockConfig, type RoomLockMapping, type Workstation } from '../lib/api'
 import { useAuth } from '../contexts/AuthContext'
@@ -134,6 +134,7 @@ export function TTLockPage() {
   const [workstations, setWorkstations] = useState<Workstation[]>([])
   const [loading, setLoading]       = useState(true)
   const [saving, setSaving]         = useState(false)
+  const [testingApi, setTestingApi] = useState(false)
   const [error, setError]           = useState<string | null>(null)
   const [success, setSuccess]       = useState<string | null>(null)
 
@@ -277,6 +278,21 @@ export function TTLockPage() {
     }
   }
 
+  const handleTestApi = async () => {
+    const ws = workstations[0]
+    if (!ws) { setError('Нет рабочих мест — добавьте на странице «Оборудование»'); return }
+    setTestingApi(true)
+    setError(null)
+    try {
+      const result = await api.ttlock.testApi(slug, ws.id)
+      showSuccess(`TTLock Cloud API работает — найдено замков: ${result.lockCount ?? 0}`)
+    } catch (e) {
+      setError(e instanceof Error ? e.message : 'Ошибка проверки API')
+    } finally {
+      setTestingApi(false)
+    }
+  }
+
   const handleAddMapping = async () => {
     if (!addRoomId || !addLockMac.trim()) return
     setAddLoading(true)
@@ -435,10 +451,16 @@ export function TTLockPage() {
             <SectorPicker value={cardSectors} onChange={setCardSectors} />
           </div>
 
-          <button onClick={handleSave} disabled={saving} className="btn-primary flex items-center gap-2">
-            {saving ? <RefreshCw size={15} className="animate-spin" /> : <Save size={15} />}
-            Сохранить
-          </button>
+          <div className="flex items-center gap-2">
+            <button onClick={handleTestApi} disabled={testingApi || saving} className="btn-secondary flex items-center gap-2">
+              {testingApi ? <RefreshCw size={15} className="animate-spin" /> : <Wifi size={15} />}
+              Проверить API
+            </button>
+            <button onClick={handleSave} disabled={saving} className="btn-primary flex items-center gap-2">
+              {saving ? <RefreshCw size={15} className="animate-spin" /> : <Save size={15} />}
+              Сохранить
+            </button>
+          </div>
         </div>
       </Section>