Adds the native WinUI A2UI rendering pipeline, MCP/local security hardening, navigation/media safeguards, and integration/UI coverage for tray-hosted A2UI surfaces.\n\nThanks to @codemonkeychris for the substantial implementation and follow-through on review feedback.\n\nCo-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Lock in the zero-warning baseline achieved by PR #177. Any future
compiler or analyser warning in the test suite now becomes a build
error, preventing warning accumulation over time.
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
