feat: Implement user-specific camera settings storage using a user:cameraId key and track the user who updated them.

server.js

@@ -212,11 +212,15 @@ function saveCameraSettings(settings) {
     fs.writeFileSync(SETTINGS_FILE, JSON.stringify(settings, null, 2));
 }
 
+// Get camera settings
 // Get camera settings
 app.get('/settings/:cameraId', authenticate, (req, res) => {
     const { cameraId } = req.params;
+    const user = req.authenticatedUser;
+    const storageKey = `${user}:${cameraId}`;
+
     const allSettings = loadCameraSettings();
-    const settings = allSettings[cameraId] || {};
+    const settings = allSettings[storageKey] || {};
 
     res.json({
         cameraId,
@@ -235,6 +239,8 @@ app.get('/settings/:cameraId', authenticate, (req, res) => {
 // Update camera settings
 app.put('/settings/:cameraId', authenticate, express.json(), (req, res) => {
     const { cameraId } = req.params;
+    const user = req.authenticatedUser;
+    const storageKey = `${user}:${cameraId}`;
     const newSettings = req.body;
 
     if (!newSettings || typeof newSettings !== 'object') {
@@ -242,10 +248,11 @@ app.put('/settings/:cameraId', authenticate, express.json(), (req, res) => {
     }
 
     const allSettings = loadCameraSettings();
-    allSettings[cameraId] = {
-        ...(allSettings[cameraId] || {}),
+    allSettings[storageKey] = {
+        ...(allSettings[storageKey] || {}),
         ...newSettings,
-        updatedAt: new Date().toISOString()
+        updatedAt: new Date().toISOString(),
+        updatedBy: user
     };
 
     try {
@@ -253,7 +260,7 @@ app.put('/settings/:cameraId', authenticate, express.json(), (req, res) => {
         res.json({
             success: true,
             cameraId,
-            settings: allSettings[cameraId]
+            settings: allSettings[storageKey]
         });
     } catch (error) {
         res.status(500).json({ error: 'Failed to save settings', details: error.message });