Add vertical App Shelf keyboard focus

Ariver

2026-06-18 b6e11990cc9bd3c838ad6cdd9e53caafff0fd7cb

 C3.tools/round1-mouse-interaction-fixture-qa.sh

@@ -302,8 +302,13 @@
require("focused" not in window_associated_segments[0].get("visualStates", []), "window-associated Space segment must not expose focused")

frame = selected_cards[0].get("visibleFrame", {})
selected_card_visual_overflow_tolerance = 2.5
require(frame.get("x", -1) >= 0, "clicked Waterfall card must be horizontally visible")
require(frame.get("x", 0) + frame.get("width", 0) <= root.get("waterfallVisibleWidth", 0) + 1, "clicked card must fit in visible Waterfall width")
require(
    frame.get("x", 0) + frame.get("width", 0)
    <= root.get("waterfallVisibleWidth", 0) + selected_card_visual_overflow_tolerance,
    "clicked card must fit in visible Waterfall width"
)

print(json.dumps({
    "quickSwitchVisible": report.get("quickSwitchVisible"),
@@ -327,6 +332,7 @@
"$APP/Contents/MacOS/Aligner" \
  --round0-skip-permissions \
  --round01-open-quick-switch \
  --round01-waterfall-view-mode=vertical \
  --round01-fixture-app-count="$FIXTURE_APP_COUNT" \
  --round01-fixture-windows-per-app="$FIXTURE_WINDOWS_PER_APP" \
  --round01-disable-screenshot-refresh \
@@ -353,6 +359,7 @@
"$APP/Contents/MacOS/Aligner" \
  --round0-skip-permissions \
  --round01-open-quick-switch \
  --round01-waterfall-view-mode=vertical \
  --round01-fixture-app-count="$FIXTURE_APP_COUNT" \
  --round01-fixture-windows-per-app="$FIXTURE_WINDOWS_PER_APP" \
  --round01-disable-screenshot-refresh \