feat: v3.4.0 — OpenPanel plugin public release (42 tools)

OpenPanel product analytics plugin fully reviewed, tested, and published.
Works with both self-hosted and cloud (openpanel.dev) instances.

- 42 tools: event tracking, data export, analytics, project/client management
- All tools use public REST APIs (Track, Export, Insights, Manage)
- Client modes: write (tracking), read (analytics), root (full access)
- Service page with description, setup notes, WordPress plugin download
- Dynamic URL hints in Add Site form
- 62 unit tests
- ENABLED_PLUGINS default now includes openpanel

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

README.md

@@ -112,14 +112,14 @@ You should see the login page. Log in with your `MASTER_API_KEY` or via **GitHub
 
 ### Try It Now (No Setup Required)
 
-**Don't want to self-host?** Try the demo instance at **[mcp.palebluedot.live](https://mcp.palebluedot.live)**:
+**Don't want to self-host?** Use the hosted instance at **[mcp.example.com](https://mcp.example.com)**:
 
 1. Log in with **GitHub** or **Google**
 2. Add your sites via the dashboard (My Sites → Add Service)
 3. Go to **Connect** page — generate config for your AI client
 4. Copy-paste the config into Claude Desktop, VS Code, or Claude Code
 
-Your personal MCP endpoint: `https://mcp.palebluedot.live/u/{your-user-id}/{alias}/mcp`
+Your personal MCP endpoint: `https://mcp.example.com/u/{your-user-id}/{alias}/mcp`
 
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