* feat: Add CORS support for Flutter mobile client
Add rack-cors gem and configure CORS for API and OAuth endpoints
to enable cross-origin requests from mobile clients and other
external applications.
https://claude.ai/code/session_01RJ6MKLkjBv7x5AQLEUn8AF
* feat: Add /sessions/* to CORS for webview authentication
Enable CORS for session endpoints to support webview-based
authentication flows in the Flutter mobile client.
https://claude.ai/code/session_01RJ6MKLkjBv7x5AQLEUn8AF
* test: Add integration tests for CORS configuration
Test that CORS middleware is configured and returns proper headers
for API, OAuth, and session endpoints including preflight requests.
https://claude.ai/code/session_01RJ6MKLkjBv7x5AQLEUn8AF
* Gemfile.lock
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Co-authored-by: Claude <noreply@anthropic.com>