feat: local resident deployment — launchd auto-start, staff page partial refresh, avatar animation fix

[Garydayy]

Summary

Optimize openclaw-control-center for macOS local resident deployment and improve the staff page experience.

Changes

1. Launchd integration — Auto-start & crash recovery via macOS launchd plist.
2. SSH port 443 support — Git remote configured for ssh://git@ssh.github.com:443 to bypass port 22 blocking.
3. Staff page "Refresh live status" button — Single button inside the staff overview card area.
4. Partial staff refresh (no full page reload) — New /api/staff/overview endpoint returns fresh staff card HTML. Click triggers AJAX fetch → swaps only #staff-overview-cards region.
5. Pixel avatar animation preserved after partial refresh — Fixed bug where agent canvas animations stopped after partial DOM swap. Added registerElement() to the avatar motion engine so new canvas elements rejoin the animation loop.
6. Health check script — scripts/control-center-health.sh monitors both gateway & control center.

Related files

• ecosystem.config.cjs — PM2 config with UI_TIMEZONE
• scripts/control-center-health.sh — Health check script
• README.zh-CN.md — Deployment notes (launchd, SSH 443, restart on code change)