feat: AI auto-fix bug tracker with real-time error monitoring

- Real-time error monitoring system with WebSocket
- Auto-fix agent that triggers on browser errors
- Bug tracker dashboard with floating button (🐛)
- Live activity stream showing AI thought process
- Fixed 4 JavaScript errors (SyntaxError, TypeError)
- Fixed SessionPicker API endpoint error
- Enhanced chat input with Monaco editor
- Session picker component for project management

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

services/claude-service.js

@@ -347,14 +347,18 @@ class ClaudeCodeService extends EventEmitter {
           // Parse output buffer from markdown
           const outputBuffer = this.parseOutputFromMarkdown(content);
 
+          // Normalize date properties with fallbacks for frontend compatibility
+          const createdAt = historical.created_at || historical.createdAt || new Date().toISOString();
+          const lastActivity = historical.last_activity || historical.lastActivity || historical.created_at || createdAt;
+
           return {
             id: historical.id,
             pid: null,
             workingDir: historical.workingDir,
             status: historical.status,
-            createdAt: historical.created_at,
-            lastActivity: historical.created_at,
-            terminatedAt: historical.created_at,
+            createdAt,
+            lastActivity,
+            terminatedAt: historical.terminated_at || historical.terminatedAt || createdAt,
             exitCode: null,
             outputBuffer,
             context: {