fix: Update MAVLink connection string from UDP to TCP for SITL.

config.py

@@ -156,8 +156,8 @@ MAVLINK = {
     "target_system": 1,
     "target_component": 1,
     
-    # Connection
-    "connection_string": "udpin:127.0.0.1:14550",
+    # Connection - SITL listens on TCP 5760 (shown as SERIAL0)
+    "connection_string": "tcp:127.0.0.1:5760",
     
     # Timeouts (seconds)
     "heartbeat_timeout": 5.0,

src/mavlink_bridge.py

@@ -64,7 +64,7 @@ class MAVLinkCommander:
     Provides methods for arming, disarming, mode changes, and flight commands.
     """
     
-    def __init__(self, connection_string: str = "udpin:127.0.0.1:14550"):
+    def __init__(self, connection_string: str = "tcp:127.0.0.1:5760"):
         """
         Initialize MAVLink commander.