feedback7 R22-LATE: while a facing is chosen, Enter follows the focus — ✕ cancels, any other button does nothing, the wheel confirms; golden: unchanged

GitHub #394 / PR #395 by @Xinglan233. The wheel's capture listener committed the previewed direction on Enter whatever
had the focus, so Tab to 准备 / 设置 / the exit button / ✕ and Enter deployed (the PR let only a focused ✕ keep its
native Enter). Now gameLogic facingEnter decides: Enter on ✕ cancels; on any other control (button, link, form field,
ARIA control) it is swallowed — the wheel already holds Space and the shortcuts; elsewhere it commits the previewed
direction, and does nothing while none is previewed. The wheel (role="dialog") takes the focus when it opens
(tabIndex -1, no focus ring over the screen), so a button focused before the drop cannot swallow the confirming Enter
and the first Tab reaches ✕; nothing restores the old focus when it closes (a restored 准备 would take the next key).

Docs: PLAYING.md's key paragraph. Tests: test/ui/feedback5-hotkeys.test.js (facingEnter and its wiring, 2 new);
test/ui/facing.e2e.test.js (SP_E2E, the PR's drag / Tab flow, 4 cases: run here in headless Chrome, 4/4 pass, 4/4 fail
on the parent — Enter on the focused exit button deployed). Golden unchanged (client only).

public/css/screens/game-panels.css

@@ -515,6 +515,8 @@ button.bpop__harmony:hover { border-style: solid; color: #fff; }
 
 /* ---- direction wheel (ui/facingWheel.js, research 09 §1.2): white diamond, 4 chevrons, "✕ 点击取消", orange range ---- */
 .fwheel { position: fixed; inset: 0; z-index: 6; touch-action: none; user-select: none; -webkit-user-select: none; cursor: crosshair; }
+/* the wheel takes the keyboard focus when it opens (Enter confirms there, GitHub #394): no ring around the whole screen */
+.fwheel:focus-visible { outline: none; }
 .fwheel__stripes { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; }
 .fwheel__dia { position: absolute; transform: translate(-50%, -50%); pointer-events: none; animation: fwheel-in 160ms var(--ease-out); }
 @keyframes fwheel-in { from { opacity: 0; transform: translate(-50%, -50%) scale(.82); } }