release: 0.0.3, switched to npm trusted publishing (#101)

* version: 0.0.2

* Switch to npm trusted publishing (OIDC)

- Remove NPM_TOKEN secret requirement from npm-publish workflow
- Uses OIDC for authentication (more secure, no long-lived tokens)
- Update CONTRIBUTING.md with trusted publisher setup instructions

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

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

* 0.0.3

---------

Co-authored-by: Claude <noreply@anthropic.com>

package.json

@@ -1,7 +1,7 @@
 {
   "homepage": "https://github.com/modelcontextprotocol/ext-apps",
   "name": "@modelcontextprotocol/ext-apps",
-  "version": "0.0.2",
+  "version": "0.0.3",
   "license": "MIT",
   "description": "MCP Apps SDK — Enable MCP servers to display interactive user interfaces in conversational clients.",
   "type": "module",