Owner decision pending (STATE.md DC-100 tick): adopt/ship/park.
Preserved from fragile git stash to named branch 2026-08-23.
NOTE: requires a Windows build machine (WinUI XAML compiler + MSIX do not
cross-build on Linux) — see WINDOWS_APP_BUILD.md in this tree.
Secret-scanned clean 2026-08-23 (no keys/tokens/PEM in tree).
