обновление бизнес логики

frontend/app/(protected)/navigation/page.tsx

@@ -215,7 +215,41 @@ const NavigationPage: React.FC = () => {
     const loadDetectors = async () => {
       try {
         setDetectorsError(null)
-        const res = await fetch('/api/get-detectors', { cache: 'no-store' })
+        
+        // Если есть modelPath и objectId - фильтруем по зоне
+        let zoneId: string | null = null
+        if (selectedModelPath && objectId) {
+          try {
+            // Получаем зоны для объекта
+            const zonesRes = await fetch(`/api/get-zones?objectId=${objectId}`, { cache: 'no-store' })
+            if (zonesRes.ok) {
+              const zonesResponse = await zonesRes.json()
+              // API возвращает { success: true, data: [...] }
+              const zonesData = zonesResponse?.data || zonesResponse
+              console.log('[NavigationPage] Loaded zones:', { count: Array.isArray(zonesData) ? zonesData.length : 0, zonesData })
+              // Ищем зону по model_path
+              if (Array.isArray(zonesData)) {
+                const zone = zonesData.find((z: any) => z.model_path === selectedModelPath)
+                if (zone) {
+                  zoneId = zone.id
+                  console.log('[NavigationPage] Found zone for model_path:', { modelPath: selectedModelPath, zoneId })
+                } else {
+                  console.log('[NavigationPage] No zone found for model_path:', selectedModelPath)
+                }
+              }
+            }
+          } catch (e) {
+            console.warn('[NavigationPage] Failed to load zones for filtering:', e)
+          }
+        }
+        
+        // Загружаем датчики (с фильтром по зоне если найдена)
+        const detectorsUrl = zoneId 
+          ? `/api/get-detectors?zone_id=${zoneId}` 
+          : '/api/get-detectors'
+        console.log('[NavigationPage] Loading detectors from:', detectorsUrl)
+        
+        const res = await fetch(detectorsUrl, { cache: 'no-store' })
         const text = await res.text()
         let payload: any
         try { payload = JSON.parse(text) } catch { payload = text }
@@ -232,7 +266,7 @@ const NavigationPage: React.FC = () => {
       }
     }
     loadDetectors()
-  }, [])
+  }, [selectedModelPath, objectId])
 
   const handleBackClick = () => {
     router.push('/dashboard')