Post Update Maintenance

After an OpenClaw version bump, fix what post-update-awareness noticed. Syncs drifted externalized plugins, restarts the gateway, verifies channel health, and prints a patch for stale openclaw.json entries. Every mutation is dry-run by default and gated behind --apply or explicit user confirmation. Requires post-update-awareness to be installed (reuses its drift detector). Use after an OpenClaw update when post-update-awareness reports drift or stale config, or when the user asks to "fix the things noura flagged".

by @hussein1362 (Hussein Nourelddine)·MIT-0