feat: add ocp update command + fix restart for new service names

- `ocp update`: pulls latest from GitHub, syncs plugin, restarts proxy
- `ocp update --check`: shows current vs latest version without applying
- `ocp restart`: now handles both dev.ocp.proxy and legacy ai.openclaw.proxy
  service names on macOS/Linux
- Bumps to v3.2.0

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "openclaw-claude-proxy",
-  "version": "3.1.0",
+  "version": "3.2.0",
   "description": "OCP (Open Claude Proxy) — use your Claude Pro/Max subscription as an OpenAI-compatible API for any IDE. Works with Cline, OpenCode, Aider, Continue.dev, OpenClaw, and more.",
   "type": "module",
   "bin": {