Move the initialization of the MCP OAuth callback server from the layer setup to the point where browser authentication is actually required. This prevents unnecessary port binding when authentication is not needed.
Additionally, improve the test runner's XML parsing to correctly handle multiple testsuite attributes and ensure tags are matched accurately.
- Update `packages/opencode/src/mcp/index.ts` to call `McpOAuthCallback.ensureRunning` only upon `UnauthorizedError`.
- Refactor `packages/opencode/script/test-runner.ts` to use a more robust `open` and `sum` logic for test results.
- Add verification to `packages/opencode/test/mcp/oauth-auto-connect.test.ts` to ensure the callback server remains inactive when not needed.
marius-kilocode