Update MCP server to use domain-specific endpoints

Changes:
- Updated default endpoints to use https://hive.home.deepblack.cloud
- Added support for HIVE_TIMEOUT environment variable
- Created .env.example with multiple deployment configurations
- Updated Claude Desktop configuration for production/development
- Updated README with comprehensive configuration guide

Production endpoints:
- API: https://hive.home.deepblack.cloud
- WebSocket: wss://hive.home.deepblack.cloud

Development fallback to localhost still available via env vars.

🤖 Generated with [Claude Code](https://claude.ai/code)

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

mcp-server/claude_desktop_config.json

@@ -4,8 +4,8 @@
       "command": "node",
       "args": ["/home/tony/AI/projects/hive/mcp-server/dist/index.js"],
       "env": {
-        "HIVE_API_URL": "http://localhost:8087",
-        "HIVE_WS_URL": "ws://localhost:8087"
+        "HIVE_API_URL": "https://hive.home.deepblack.cloud",
+        "HIVE_WS_URL": "wss://hive.home.deepblack.cloud"
       }
     }
   }