Summary

• Remove Audio tab from keyboard.json Form Editor (QMK firmware ignores audio.pins in keyboard.json)
• Add Audio tab to config.h Form Editor with: AUDIO_PIN, AUDIO_PIN_ALT, AUDIO_DRIVER (freeSolo autocomplete), AUDIO_VOICES, AUDIO_INIT_DELAY
• Add Hardware tab to config.h Form Editor with: USB_VBUS_PIN
• Rename keyboard.json's Input tab back to Encoder and restore tab index to 5
• All audio configuration is now consolidated in config.h for clarity

Test plan

• Open keyboard.json → Form Editor → verify Audio tab is gone, Encoder tab exists at position 5
• Open config.h → Form Editor → verify Hardware tab with USB_VBUS_PIN field
• Open config.h → Form Editor → verify Audio tab with AUDIO_PIN, AUDIO_PIN_ALT, AUDIO_DRIVER, AUDIO_VOICES, AUDIO_INIT_DELAY
• Set AUDIO_DRIVER via dropdown selection (e.g. pwm_hardware) → verify in Code Editor
• Type custom AUDIO_DRIVER value → verify freeSolo input works
• Toggle AUDIO_VOICES → verify #define AUDIO_VOICES appears/disappears in Code Editor
• Set USB_VBUS_PIN to GP19 → verify #define USB_VBUS_PIN GP19 in Code Editor
• Verify Japanese locale for all new labels and descriptions

🤖 Generated with Claude Code