fix: use neutral service names to avoid OpenClaw gateway detection

OpenClaw's gateway scans LaunchAgent plists and systemd units for
"openclaw" markers and flags them as conflicting gateway-like services.
Renamed service identifiers to avoid false positives:

- macOS: ai.openclaw.proxy → dev.ocp.proxy
- Linux: openclaw-proxy.service → ocp-proxy.service
- Logs: ~/.openclaw/logs/ → ~/.ocp/logs/

Setup auto-removes legacy service names on upgrade. Uninstall handles
both old and new names. Also bumps version to 3.1.0.

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

package.json

@@ -1,6 +1,6 @@
 {
   "name": "openclaw-claude-proxy",
-  "version": "3.0.0",
+  "version": "3.1.0",
   "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": {