Local checkpoint - NOT for public release. Closes the UI-coverage gap Ed pushed on.
- MainForm gets a `headless` ctor flag (defaults false → real startup path byte-for-byte
unchanged). When true it builds the WHOLE window — every tab, control and menu — but
skips the OS touches: global-hotkey registration, the status/device-refresh timers, the
device-change notifier, and the audio-backend mode switch in ApplyAsioMode. The
disruptive startup work (Connect + sockets, UPnP, update check) already lives in the
Shown handler, which never fires when a test constructs the form without showing it — so
a headless construction is naturally side-effect-free.
- New self-test "Main window coverage": constructs the headless main window and audits the
lot — accessible names present, Alt mnemonics unique per group, tab order forms no cycle.
4 tabs, 41 interactive controls.
- It immediately EARNED ITS KEEP: caught a real Alt+L collision — the WASAPI latency and
ASIO latency labels both claimed Alt+L in the same panel, so in WASAPI+ASIO mode the ASIO
field was unreachable by its shortcut. Moved ASIO latency to Alt+I; WASAPI keeps Alt+L.
Gate 23/23.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
EdnunpandClaude Opus 4.8
c8fed26115