Feature: Claude Assistent Chat in TaskMate

Neuer Tab "Assistent" mit interaktiver Claude Code Session:
- Chat-UI mit Session-Verwaltung (History, neue/alte Sessions)
- Claude CLI als Child-Process auf dem Host (interaktiv, mit Rueckfragen)
- Streaming-Output per Socket.io
- Nur fuer autorisierte User (Hendrik, Monami)
- 30 Min Inaktivitaets-Timeout
- Task-Uebergabe: Button im Task-Modal sendet Aufgabe an Assistenten
- Chat-Verlauf wird in DB gespeichert

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

backend/server.js

@@ -48,6 +48,7 @@ const giteaRoutes = require('./routes/gitea');
 const knowledgeRoutes = require('./routes/knowledge');
 const codingRoutes = require('./routes/coding');
 const reminderRoutes = require('./routes/reminders');
+const assistantRoutes = require('./routes/assistant');
 
 // Express App erstellen
 const app = express();
@@ -178,6 +179,9 @@ app.use('/api/reminders', authenticateToken, csrfProtection, reminderRoutes);
 // Contacts-Routes (Kontakte)
 app.use('/api/contacts', authenticateToken, csrfProtection, require('./routes/contacts'));
 
+// Assistant-Routes (Claude-Assistent)
+app.use('/api/assistant', authenticateToken, csrfProtection, assistantRoutes);
+
 // =============================================================================
 // SOCKET.IO
 // =============================================================================
@@ -241,6 +245,9 @@ io.on('connection', (socket) => {
       }))
     });
   });
+
+  // Assistant Socket-Events registrieren
+  assistantRoutes.registerSocketEvents(socket);
 });
 
 // Socket.io Instance global verfügbar machen für Routes
@@ -328,11 +335,16 @@ database.initialize()
 // Graceful Shutdown
 process.on('SIGTERM', () => {
   logger.info('SIGTERM empfangen, fahre herunter...');
-  
+
   // Reminder Service stoppen
   const reminderServiceInstance = reminderService.getInstance();
   reminderServiceInstance.stop();
-  
+
+  // Aktive Assistant-Sessions beenden
+  for (const [userId] of connectedClients) {
+    assistantRoutes.stopSession(userId);
+  }
+
   server.close(() => {
     database.close();
     logger.info('Server beendet');
@@ -342,11 +354,16 @@ process.on('SIGTERM', () => {
 
 process.on('SIGINT', () => {
   logger.info('SIGINT empfangen, fahre herunter...');
-  
+
   // Reminder Service stoppen
   const reminderServiceInstance = reminderService.getInstance();
   reminderServiceInstance.stop();
-  
+
+  // Aktive Assistant-Sessions beenden
+  for (const [userId] of connectedClients) {
+    assistantRoutes.stopSession(userId);
+  }
+
   server.close(() => {
     database.close();
     logger.info('Server beendet');