feat: Add repeater commands to slow commands list

Added req_status, req_neighbours, and trace commands with 15s timeout
as they communicate with repeaters and need time for responses.

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

app/main.py

@@ -22,6 +22,10 @@ SLOW_COMMANDS = {
     'recv': 60,
     'send': 15,
     'send_msg': 15,
+    # Repeater commands
+    'req_status': 15,
+    'req_neighbours': 15,
+    'trace': 15,
 }
 
 # Configure logging