Fix npm package deployment and usage documentation

🔧 Resolve npmjs deployment issue:
- Add npm global installation guide (npm install -g @ironclads/incus-mcp)
- Update Claude Desktop configuration with two options
- Fix mcp-config-example.json to use global binary
- Update CLAUDE.md with correct remote server list (removed lambda)

✅ npm package now works correctly with global installation
📚 Documentation updated with clear installation options

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

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

mcp-config-example.json

@@ -1,8 +1,7 @@
 {
   "mcpServers": {
     "incus": {
-      "command": "node",
-      "args": ["/Users/kaffa/mcp-servers/incus-mcp/build/index.js"],
+      "command": "incus-mcp",
       "env": {
         "PATH": "/usr/local/bin:/opt/homebrew/bin:/usr/bin:/bin"
       }