feat: make log level a launch parameter (default: debug)

workspace/src/bringup_pkg/launch/vision_pipeline.launch.py

@@ -1,4 +1,6 @@
 from launch import LaunchDescription
+from launch.actions import DeclareLaunchArgument
+from launch.substitutions import LaunchConfiguration
 from launch_ros.actions import Node
 
 # Port allocation to avoid conflicts:
@@ -8,24 +10,34 @@ from launch_ros.actions import Node
 
 
 def generate_launch_description():
+    log_level = LaunchConfiguration('log_level', default='debug')
+
     return LaunchDescription([
+        DeclareLaunchArgument(
+            'log_level',
+            default_value='debug',
+            description='Log level for all pipeline nodes (debug/info/warn/error)',
+        ),
         Node(
             package='driver_pkg',
             executable='camera_node',
             name='camera_node',
             output='screen',
+            arguments=['--ros-args', '--log-level', log_level],
         ),
         Node(
             package='algorithm_pkg',
             executable='vision_node',
             name='vision_node',
             output='screen',
+            arguments=['--ros-args', '--log-level', log_level],
         ),
         Node(
             package='application_pkg',
             executable='web_node',
             name='web_node',
             output='screen',
+            arguments=['--ros-args', '--log-level', log_level],
             parameters=[{'port': 8080}],
         ),
         Node(
@@ -33,6 +45,7 @@ def generate_launch_description():
             executable='gimbal_node',
             name='gimbal_node',
             output='screen',
+            arguments=['--ros-args', '--log-level', log_level],
             parameters=[{
                 'serial_port': '/dev/ttyTHS1',
                 'baud_rate': 921600,
@@ -43,6 +56,7 @@ def generate_launch_description():
             executable='chassis_node',
             name='chassis_node',
             output='screen',
+            arguments=['--ros-args', '--log-level', log_level],
             parameters=[{
                 'serial_port': '/dev/ttyCH341USB0',
                 'baud_rate': 115200,