Add loading progress indicator

Adds real-time progress feedback when loading projects:
- Server broadcasts progress updates via WebSocket
- Sidebar shows current project being loaded with progress bar
- Fixed progress counter to show correct current/total
- Completion event now fires after all projects (including manual) are processed
- Race condition fix for timeout cleanup using ref
- Added cleanup function to prevent state update on unmounted component

server/index.js

@@ -80,6 +80,20 @@ import { validateApiKey, authenticateToken, authenticateWebSocket } from './midd
 // File system watcher for projects folder
 let projectsWatcher = null;
 const connectedClients = new Set();
+let isGetProjectsRunning = false; // Flag to prevent reentrant calls
+
+// Broadcast progress to all connected WebSocket clients
+function broadcastProgress(progress) {
+    const message = JSON.stringify({
+        type: 'loading_progress',
+        ...progress
+    });
+    connectedClients.forEach(client => {
+        if (client.readyState === WebSocket.OPEN) {
+            client.send(message);
+        }
+    });
+}
 
 // Setup file system watcher for Claude projects folder using chokidar
 async function setupProjectsWatcher() {
@@ -117,13 +131,19 @@ async function setupProjectsWatcher() {
         const debouncedUpdate = async (eventType, filePath) => {
             clearTimeout(debounceTimer);
             debounceTimer = setTimeout(async () => {
+                // Prevent reentrant calls
+                if (isGetProjectsRunning) {
+                    return;
+                }
+
                 try {
+                    isGetProjectsRunning = true;
 
                     // Clear project directory cache when files change
                     clearProjectDirectoryCache();
 
                     // Get updated projects list
-                    const updatedProjects = await getProjects();
+                    const updatedProjects = await getProjects(broadcastProgress);
 
                     // Notify all connected clients about the project changes
                     const updateMessage = JSON.stringify({
@@ -142,6 +162,8 @@ async function setupProjectsWatcher() {
 
                 } catch (error) {
                     console.error('[ERROR] Error handling project changes:', error);
+                } finally {
+                    isGetProjectsRunning = false;
                 }
             }, 300); // 300ms debounce (slightly faster than before)
         };
@@ -366,7 +388,7 @@ app.post('/api/system/update', authenticateToken, async (req, res) => {
 
 app.get('/api/projects', authenticateToken, async (req, res) => {
     try {
-        const projects = await getProjects();
+        const projects = await getProjects(broadcastProgress);
         res.json(projects);
     } catch (error) {
         res.status(500).json({ error: error.message });

server/projects.js

@@ -379,22 +379,46 @@ async function extractProjectDirectory(projectName) {
   }
 }
 
-async function getProjects() {
+async function getProjects(progressCallback = null) {
   const claudeDir = path.join(os.homedir(), '.claude', 'projects');
   const config = await loadProjectConfig();
   const projects = [];
   const existingProjects = new Set();
-  
+  let totalProjects = 0;
+  let processedProjects = 0;
+  let directories = [];
+
   try {
     // Check if the .claude/projects directory exists
     await fs.access(claudeDir);
-    
+
     // First, get existing Claude projects from the file system
     const entries = await fs.readdir(claudeDir, { withFileTypes: true });
-    
-    for (const entry of entries) {
-      if (entry.isDirectory()) {
-        existingProjects.add(entry.name);
+    directories = entries.filter(e => e.isDirectory());
+
+    // Build set of existing project names for later
+    directories.forEach(e => existingProjects.add(e.name));
+
+    // Count manual projects not already in directories
+    const manualProjectsCount = Object.entries(config)
+      .filter(([name, cfg]) => cfg.manuallyAdded && !existingProjects.has(name))
+      .length;
+
+    totalProjects = directories.length + manualProjectsCount;
+
+    for (const entry of directories) {
+        processedProjects++;
+
+        // Emit progress
+        if (progressCallback) {
+          progressCallback({
+            phase: 'loading',
+            current: processedProjects,
+            total: totalProjects,
+            currentProject: entry.name
+          });
+        }
+
         const projectPath = path.join(claudeDir, entry.name);
         
         // Extract actual project directory from JSONL sessions
@@ -460,20 +484,35 @@ async function getProjects() {
             status: 'error'
           };
         }
-        
-        projects.push(project);
-      }
+
+      projects.push(project);
     }
   } catch (error) {
     // If the directory doesn't exist (ENOENT), that's okay - just continue with empty projects
     if (error.code !== 'ENOENT') {
       console.error('Error reading projects directory:', error);
     }
+    // Calculate total for manual projects only (no directories exist)
+    totalProjects = Object.entries(config)
+      .filter(([name, cfg]) => cfg.manuallyAdded)
+      .length;
   }
   
   // Add manually configured projects that don't exist as folders yet
   for (const [projectName, projectConfig] of Object.entries(config)) {
     if (!existingProjects.has(projectName) && projectConfig.manuallyAdded) {
+      processedProjects++;
+
+      // Emit progress for manual projects
+      if (progressCallback) {
+        progressCallback({
+          phase: 'loading',
+          current: processedProjects,
+          total: totalProjects,
+          currentProject: projectName
+        });
+      }
+
       // Use the original path if available, otherwise extract from potential sessions
       let actualProjectDir = projectConfig.originalPath;
       
@@ -541,7 +580,16 @@ async function getProjects() {
       projects.push(project);
     }
   }
-  
+
+  // Emit completion after all projects (including manual) are processed
+  if (progressCallback) {
+    progressCallback({
+      phase: 'complete',
+      current: totalProjects,
+      total: totalProjects
+    });
+  }
+
   return projects;
 }