Optimise db query. Add more error detail.

frontend/src/App.jsx

@@ -751,7 +751,8 @@ const APP = () => {
       renderLineOnMap(response.data.data);
     } catch (error) {
       console.error('Error fetching line of sight:', error);
-      setApiError('Failed to fetch route. Please try again.');
+      const msg = error.response?.data?.error || error.message || 'Failed to fetch route.';
+      setApiError(`Error: ${msg}`);
     } finally {
       setLoading(false);
       // Reset flight progress for a new line calculation

frontend/src/services/api.js

@@ -4,7 +4,7 @@ const API_BASE_URL = import.meta.env.VITE_API_URL || '/api';
 
 const api = axios.create({
   baseURL: API_BASE_URL,
-  timeout: 10000,
+  timeout: 30000,
   headers: {
     'Content-Type': 'application/json'
   }