- setup.sh: Add btop to apt install for temp monitoring
- first-boot-wizard: Add Step 4 for overclock configuration
- Detects Pi 4/5 model
- Asks about active cooling
- Offers appropriate overclock settings (2.0GHz Pi4, 2.8GHz Pi5)
- Prompts for restart if enabled
- decode.html: Make message box click-to-copy, remove separate button
- Shows "(click to copy)" hint
- Visual feedback on hover and copy
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>