feat: Enhanced Orchestrator Chat with notifications and better UX

- Add task creation notifications in Orchestrator Chat
- New messages appear at top (newest first)
- Add Clear Chat button with confirmation
- Improve timestamps: DD.MM.YYYY HH:MM:SS format
- Support for system notifications (task created, sub-agent responses)
- Add add_orchestrator_notification() helper function
- Auto-notify when agents create sub-tasks
- Clear Chat route: POST /orchestrator/clear
- Better visual distinction between messages and notifications

app.py

@@ -686,6 +686,25 @@ def get_tasks(status=None, limit=None):
     return [dict(row) for row in rows]
 
 
+def add_orchestrator_notification(message_type, message, agent_key=None):
+    """Fügt eine System-Benachrichtigung zum Orchestrator-Chat hinzu."""
+    try:
+        if 'orchestrator_chat' not in session:
+            session['orchestrator_chat'] = []
+        
+        session['orchestrator_chat'].insert(0, {  # Insert at top (newest first)
+            'timestamp': datetime.now().strftime('%d.%m.%Y %H:%M:%S'),
+            'type': message_type,
+            'message': message,
+            'agent': AGENTS.get(agent_key, {}).get('name', agent_key) if agent_key else 'System',
+            'agent_key': agent_key,
+            'is_notification': True
+        })
+        session['orchestrator_chat'] = session['orchestrator_chat'][:50]  # Keep last 50
+        session.modified = True
+    except:
+        pass  # Session might not be available in background threads
+
 def create_task(title, description, agent_key='orchestrator', task_type='manual', created_by='user', **kwargs):
     """Erstellt einen neuen Task in der Datenbank."""
     con = sqlite3.connect(EMAIL_JOURNAL_DB)
@@ -709,6 +728,15 @@ def create_task(title, description, agent_key='orchestrator', task_type='manual'
     con.close()
     
     logging.info(f"[DB] Task #{task_id} erstellt: {title[:50]}")
+    
+    # Orchestrator-Notification hinzufügen
+    if created_by != 'user':  # Nur bei Agent-erstellten Tasks
+        add_orchestrator_notification(
+            'task_created',
+            f'📋 Task #{task_id} erstellt: {title}',
+            agent_key=created_by
+        )
+    
     return task_id
 
 
@@ -2432,14 +2460,15 @@ def orchestrator():
             response = execute_agent_task(selected_agent, prompt)
             
             orchestrator_chat = session.get('orchestrator_chat', [])
-            orchestrator_chat.append({
-                'timestamp': datetime.now().strftime('%Y-%m-%d %H:%M'),
+            orchestrator_chat.insert(0, {  # Insert at top (newest first)
+                'timestamp': datetime.now().strftime('%d.%m.%Y %H:%M:%S'),
                 'user_prompt': prompt,
                 'agent': agent_name,
                 'agent_key': selected_agent,
-                'response': response
+                'response': response,
+                'is_notification': False
             })
-            session['orchestrator_chat'] = orchestrator_chat[-30:]
+            session['orchestrator_chat'] = orchestrator_chat[:30]  # Keep first 30
     
     chat_display = session.get('orchestrator_chat', [])
     return render_template('orchestrator.html', 
@@ -2447,6 +2476,13 @@ def orchestrator():
                          chat_history=chat_display,
                          knowledge_loaded=bool(session.get('orchestrator_kb')))
 
+@app.route('/orchestrator/clear', methods=['POST'])
+def orchestrator_clear():
+    """Löscht den Orchestrator Chat-Verlauf."""
+    session['orchestrator_chat'] = []
+    session.modified = True
+    return jsonify({'success': True})
+
 @app.route('/agents', methods=['GET', 'POST'])
 def agents():
     agents_dir = os.path.join(os.path.dirname(__file__), 'agents')