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Add keyboard controls that publish TwistStamped on /cmd_vel over LCM: Key bindings: - WASD/arrows: forward/back + turn left/right - QE: strafe left/right - Space: emergency stop - Shift: 2x speed multiplier Implementation: - Add TwistCommand struct and encode_twist_stamped() to lcm.rs - Add KeyboardHandler module with focus management - Wrap re_viewer::App in DimosApp for keyboard interception - Add keyboard status overlay when active - Full LCM wire format compatibility (82-byte TwistStamped) - Comprehensive test coverage (27/27 tests pass) Maintains existing click-to-nav functionality while adding teleop controls. Ready for integration with DimOS autoconnect on /cmd_vel channel.
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adds wasd keyboard controls to dimos-viewer that publish twist commands over lcm. wasd moves forward/back and turns left/right, qe strafes, space stops everything, shift doubles the speed. only captures keys when the 3d viewport has focus so you can still type in text fields normally. publishes geometry_msgs/TwistStamped on /cmd_vel channel that dimos autoconnect can pick up. shows a little green overlay when keyboard control is active. all 27 tests pass including new keyboard handler tests. maintains existing click-to-nav functionality.