feat: Configure Nav2 recovery behaviors (Issue #479)
Implement conservative recovery behaviors for autonomous navigation on FC + Hoverboard ESC drivetrain.
Recovery Sequence (round-robin, 6 retries):
1. Clear costmaps (local + global)
2. Spin 90° @ 0.5 rad/s max (conservative for self-balancer)
3. Wait 5 seconds (allow dynamic obstacles to move)
4. Backup 0.3m @ 0.1 m/s (deadlock escape, very conservative)
Configuration Details:
- backup: 0.3m reverse, 0.1 m/s speed, 0.15 m/s max, 5s timeout
- spin: 90° rotation, 0.5 rad/s max angular velocity, 1.6 rad/s² accel
- wait: 5-second pause for obstacle clearing
- progress_checker: 20cm minimum movement threshold in 10s window
Safety:
- E-stop (Issue #459) takes priority over recovery behaviors
- Emergency stop system runs independently on STM32 firmware
- Conservative speeds for FC + Hoverboard ESC stability
Files Modified:
- jetson/config/nav2_params.yaml: behavior_server parameters
- jetson/ros2_ws/src/saltybot_bringup/behavior_trees/navigate_to_pose_with_recovery.xml: BT updates
- jetson/config/RECOVERY_BEHAVIORS.md: Configuration documentation
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>