fix(api): Convert location IDs to Legacy API numeric codes

- Add legacyCode to ROOM_LOCATIONS constants (102-200)
- Add getLocationLegacyCode() to convert ID -> code when saving
- Add getLocationIdFromCode() to convert code -> ID when loading
- updateDeviceMetadata now sends numeric codes to Legacy API
- getDevicesForBeneficiary now converts codes back to string IDs

Legacy API expects numeric location codes (e.g., 102 for Bedroom),
but frontend uses string IDs (e.g., 'bedroom'). This fix ensures
proper bidirectional conversion.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

services/api.ts

@@ -30,20 +30,32 @@ const ELDERLY_AVATARS = [
 // Room locations for sensor placement
 // Used in device settings to select where sensor is installed
 export const ROOM_LOCATIONS = [
-  { id: 'bedroom', label: 'Bedroom', icon: '🛏️' },
+  { id: 'bedroom', label: 'Bedroom', icon: '🛏️', legacyCode: 102 },
-  { id: 'living_room', label: 'Living Room', icon: '🛋️' },
+  { id: 'living_room', label: 'Living Room', icon: '🛋️', legacyCode: 103 },
-  { id: 'kitchen', label: 'Kitchen', icon: '🍳' },
+  { id: 'kitchen', label: 'Kitchen', icon: '🍳', legacyCode: 104 },
-  { id: 'bathroom', label: 'Bathroom', icon: '🚿' },
+  { id: 'bathroom', label: 'Bathroom', icon: '🚿', legacyCode: 105 },
-  { id: 'hallway', label: 'Hallway', icon: '🚪' },
+  { id: 'hallway', label: 'Hallway', icon: '🚪', legacyCode: 106 },
-  { id: 'entrance', label: 'Entrance', icon: '🏠' },
+  { id: 'entrance', label: 'Entrance', icon: '🏠', legacyCode: 111 },
-  { id: 'garage', label: 'Garage', icon: '🚗' },
+  { id: 'garage', label: 'Garage', icon: '🚗', legacyCode: 108 },
-  { id: 'basement', label: 'Basement', icon: '🪜' },
+  { id: 'basement', label: 'Basement', icon: '🪜', legacyCode: 110 },
-  { id: 'office', label: 'Office', icon: '💼' },
+  { id: 'office', label: 'Office', icon: '💼', legacyCode: 107 },
-  { id: 'other', label: 'Other', icon: '📍' },
+  { id: 'other', label: 'Other', icon: '📍', legacyCode: 200 },
 ] as const;
 
 export type RoomLocationId = typeof ROOM_LOCATIONS[number]['id'];
 
+// Helper to convert location ID to Legacy API code
+function getLocationLegacyCode(locationId: string): number | undefined {
+  const location = ROOM_LOCATIONS.find(loc => loc.id === locationId);
+  return location?.legacyCode;
+}
+
+// Helper to convert Legacy API code to location ID
+export function getLocationIdFromCode(code: number): RoomLocationId | undefined {
+  const location = ROOM_LOCATIONS.find(loc => loc.legacyCode === code);
+  return location?.id;
+}
+
 // Get consistent avatar based on deployment_id
 function getAvatarForBeneficiary(deploymentId: number): string {
   const index = deploymentId % ELDERLY_AVATARS.length;
@@ -1646,6 +1658,19 @@ class ApiService {
           status = 'offline';  // 🔴 Definitely problem
         }
 
+        // Convert numeric location code to string ID if needed
+        let locationId = '';
+        if (location) {
+          const numericLocation = parseInt(location, 10);
+          if (!isNaN(numericLocation)) {
+            // It's a numeric code from Legacy API - convert to our ID
+            locationId = getLocationIdFromCode(numericLocation) || '';
+          } else {
+            // It's already a string (legacy data or custom location)
+            locationId = location;
+          }
+        }
+
         return {
           deviceId: deviceId.toString(),
           wellId: parseInt(wellId, 10),
@@ -1653,7 +1678,7 @@ class ApiService {
           name: `WP_${wellId}_${mac.slice(-6).toLowerCase()}`,
           status: status,
           lastSeen: lastSeen,
-          location: location || '',
+          location: locationId,
           description: description || '',
           beneficiaryId: beneficiaryId,
           deploymentId: deploymentId,
@@ -1779,7 +1804,7 @@ class ApiService {
   async updateDeviceMetadata(
     deviceId: string,
     updates: {
-      location?: string;
+      location?: string;  // Location ID (e.g., 'bedroom', 'kitchen') - will be converted to Legacy API code
       description?: string;
     }
   ): Promise<ApiResponse<{ success: boolean }>> {
@@ -1797,8 +1822,15 @@ class ApiService {
       });
 
       // Add optional fields if provided
+      // Location must be converted from ID to Legacy API numeric code
       if (updates.location !== undefined) {
-        formData.append('location', updates.location);
+        const legacyCode = getLocationLegacyCode(updates.location);
+        if (legacyCode !== undefined) {
+          formData.append('location', legacyCode.toString());
+        } else {
+          // If location ID not found, log warning but don't fail
+          console.warn(`Unknown location ID: ${updates.location}, skipping location update`);
+        }
       }
       if (updates.description !== undefined) {
         formData.append('description', updates.description);