Reset-ASIO button + checkbox tick/untick sounds (parts 1-2 of the cue/preferences overhaul)

Part 1 - "Uncheck all inputs and outputs" button now also resets the ASIO driver to "(none)":
renamed to say so, and UncheckAllDevices sets asioDriverBox to row 0 for a full clean
WASAPI-only, nothing-selected state.

Part 2 - checkbox tick/untick sounds: every checkbox toggle anywhere in RemSound now plays a
short cue (check.wav on tick, uncheck.wav on untick) - instant feedback on which way a box
went, especially in the inputs/outputs lists. New CheckSoundService + two machine-wide cues
(CheckboxOn/Off) with the usual numbered-variant + Preferences treatment. Hooked from
AccessibleCheckBox.OnCheckedChanged and the device lists' WireCheckedListAccessibility, both
gated on the control being Focused so a genuine user toggle clicks but bulk programmatic
(un)checking (profile load, "uncheck all") stays silent. Reloaded at startup and on cue change.

Tests + manual updated; .sfk byproducts cleared.

Remaining for the overhaul (next): tabbed Preferences (General / Audio cues / Startup behaviour /
Update settings), the cue-list redesign with a "none" option replacing per-cue checkboxes, moving
Startup behaviour out of the Options menu, and a front-most "missing sound file" error.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/RemSound.App/AccessibleCheckBox.cs

@@ -60,6 +60,9 @@ internal sealed class AccessibleCheckBox : CheckBox
         if (Focused)
         {
             NotifyWinEvent(EVENT_OBJECT_FOCUS, Handle, OBJID_CLIENT, CHILDID_SELF);
+            // Audible tick/untick feedback. Gated on Focused so it fires for a genuine user toggle
+            // (click or spacebar) but stays silent for the bulk programmatic checking on profile load.
+            CheckSoundService.Play(Checked);
         }
     }
 }