Fix update functionality and improve documentation

- Fixed update detection in install scripts
- Added Git availability checks to update system
- Improved error handling for update endpoint
- Added detailed Git requirements to README
- Added troubleshooting section for update issues

🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>

server.js

@@ -45,6 +45,7 @@ function loadModule(baseName) {
     `./modules/${baseName.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase()}`
   ];
   
+  console.log(`Attempting to load module: ${baseName}`);
   let lastError = null;
   for (const modulePath of paths) {
     try {
@@ -1236,7 +1237,16 @@ app.get('/api/auth/validate', authenticateJWT, (req, res) => {
   });
 });
 
-// System status and update endpoints
+// System endpoints - consolidated from server-endpoints.js
+// Ensure TransmissionClient has the necessary methods
+if (!TransmissionClient.prototype.sessionGet && TransmissionClient.prototype.getStatus) {
+  // Add compatibility method if missing
+  TransmissionClient.prototype.sessionGet = async function() {
+    return this.getStatus();
+  };
+}
+
+// System status endpoint
 app.get('/api/system/status', authenticateJWT, async (req, res) => {
   try {
     // Get system uptime
@@ -1249,11 +1259,12 @@ app.get('/api/system/status', authenticateJWT, async (req, res) => {
     // Check transmission connection
     let transmissionStatus = 'Connected';
     try {
-      const status = await transmissionClient.getStatus();
-      if (!status.connected) {
+      const status = await transmissionClient.sessionGet();
+      if (!status || (status.connected === false)) {
         transmissionStatus = 'Disconnected';
       }
     } catch (err) {
+      console.error('Transmission connection error:', err);
       transmissionStatus = 'Disconnected';
     }
     
@@ -1278,11 +1289,34 @@ app.get('/api/system/status', authenticateJWT, async (req, res) => {
 app.get('/api/system/check-updates', authenticateJWT, async (req, res) => {
   try {
     // Check if git is available and if this is a git repository
-    const isGitRepo = fs.existsSync(path.join(__dirname, '.git'));
+    let isGitRepo = false;
+    let isGitAvailable = false;
+    
+    try {
+      // First check if git command is available
+      await execAsync('which git');
+      isGitAvailable = true;
+      
+      // Then check if directory is a git repository
+      isGitRepo = await fs.access(path.join(__dirname, '.git'))
+        .then(() => true)
+        .catch(() => false);
+    } catch (error) {
+      console.error('Error checking git availability:', error);
+      isGitAvailable = false;
+    }
+    
+    if (!isGitAvailable) {
+      return res.json({
+        status: 'error',
+        message: 'Git is not installed or not available. Please install Git to enable updates.'
+      });
+    }
+    
     if (!isGitRepo) {
       return res.json({
         status: 'error',
-        message: 'This installation is not set up for updates. Please use the bootstrap installer.'
+        message: 'This installation is not set up as a Git repository. Please use the bootstrap installer.'
       });
     }
     
@@ -1370,11 +1404,34 @@ app.get('/api/system/check-updates', authenticateJWT, async (req, res) => {
 app.post('/api/system/update', authenticateJWT, async (req, res) => {
   try {
     // Check if git is available and if this is a git repository
-    const isGitRepo = fs.existsSync(path.join(__dirname, '.git'));
+    let isGitRepo = false;
+    let isGitAvailable = false;
+    
+    try {
+      // First check if git command is available
+      await execAsync('which git');
+      isGitAvailable = true;
+      
+      // Then check if directory is a git repository
+      isGitRepo = await fs.access(path.join(__dirname, '.git'))
+        .then(() => true)
+        .catch(() => false);
+    } catch (error) {
+      console.error('Error checking git availability:', error);
+      isGitAvailable = false;
+    }
+    
+    if (!isGitAvailable) {
+      return res.status(400).json({
+        status: 'error',
+        message: 'Git is not installed or not available. Please install Git to enable updates.'
+      });
+    }
+    
     if (!isGitRepo) {
       return res.status(400).json({
         status: 'error',
-        message: 'This installation is not set up for updates. Please use the bootstrap installer.'
+        message: 'This installation is not set up as a Git repository. Please use the bootstrap installer.'
       });
     }