[stevenaya]

Depends on #116.

Move V1 single-arm and bimanual assembly onto shared presets and component generation.

Changes

• Split V1 arm data into topology, joint, link and control configuration, with single-arm and bimanual presets. Use stable link/joint keys and topology name fields to preserve emitted names.
• Move the pedestal and complete parallel-link gripper, including link7, into their component directories.
• Configure installation transforms, reflection and joint overrides through presets, replacing legacy mounting and prefix CLI conversions.
• Declare system membership through top-level systems.joints with stable idx values and resolve the actual joint names through component name maps.
• Preserve the standard CAN launch arguments and automatic mock selection in the V1 entry.

Validation

• 31 existing tests pass on ROS 2 Jazzy, covering assembly, entrypoints, control interfaces and resource references.
• Model and existing control data match the previous V1 configurations across CAN overrides, apart from the new index metadata.

Review the V1 migration after #116.