- Add U-Claw.html navigation page with OS auto-detection and live status
- Rename scripts: start → Mac-Start/Windows-Start, menu → Mac-Menu/Windows-Menu
- Update installer scripts to reference new v2 directory structure (app/core)
- Update .gitignore to exclude build artifacts and marketing assets
- Single package for Mac ARM64 + Windows x64
- start.command/bat = quick launch (gateway + browser)
- menu.command/bat = full 13-option menu:
config wizard, QQ Bot, Feishu, skills, diagnostics,
backup/restore, reset, China mirror, system info
- app/data/system separation for safe upgrades