feedback5 WAC: players rebind the in-match shortcuts in 设置 → 快捷键 (community request 「快捷键可不可以自己设置」, the owner's decision of 2026-10-07)

- The settings (sp.pref.settings) hold a key map, action → KeyboardEvent.code, for refresh / freeze / level-up /
  retreat / sell / ready (the ready key also pauses a solo battle); the defaults are the 0.1.4 keys R F D Q X Space,
  so nothing changes for a player who never opens the section. sanitizeSettings keeps each saved key that may be a
  shortcut and gives any other its default; not a map, or two actions on one key, gives the defaults.
- One lookup, actionForKey (the character typed first, then the physical key: the 0.1.4 code-or-key match, identical
  for the defaults), serves shortcutFor(e, keys) in game.js and the facing wheel; the modifier, text-field, repeat and
  overlay guards are unchanged. The shop bar, ready / pause and underframe key hints read the map.
- 设置 → 快捷键 (the one SettingsModal, in a match and on the title screen): each action with its key; click or Enter
  waits, the next key binds; Esc cancels (the dialog stays open), Tab leaves; Ctrl / Alt / ⌘ combinations and the
  interface keys (Esc, Tab, Enter, arrows, F1–F12) are refused; a key in use is swapped and the line under the list
  names both; 恢复默认. Esc stays fixed. Touch-only devices: a keyboard note and a folded list; one column under 768 px.
- Tests: test/ui/feedback5-hotkeys.test.js (map, sanitising, conflicts, lookup, capture, handlers and hints with a
  rebound key), test/ui/gameLogic.test.js (sanitizeSettings now returns keys), test/ui/hotkeys.e2e.test.js (SP_E2E=1:
  撤退 rebound to W with the keyboard only in the mock match; phone width).

Golden unchanged (client UI only).

public/css/screens/game.css

@@ -514,6 +514,29 @@
 .set-seg button.is-on { background: var(--mint-500); color: var(--text-on-mint); font-weight: 700; }
 .set-hint { margin-top: .06rem; font-size: .14rem; color: var(--text-dim); line-height: 1.8; }
 .set-hint kbd, .lvcard__key, .toolbtn kbd { font-family: var(--font-num); font-size: .11rem; border: 1px solid var(--line-2); padding: 0 .04rem; color: var(--text-lo); background: rgba(0, 0, 0, .3); }
+/* 快捷键 (ui/settings.js HotkeySection): each shortcut with its key — click the key, press the new one; two columns,
+   one under 768 px (phones in landscape) */
+.set-keys { display: flex; flex-direction: column; gap: .08rem; padding-top: .1rem; border-top: 1px solid var(--line); }
+.set-keys__head { display: flex; align-items: center; justify-content: space-between; gap: .12rem; min-height: .44rem; }
+.set-keys__list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .06rem .14rem; margin: 0; padding: 0; list-style: none; }
+.set-keys__row { display: flex; align-items: center; justify-content: space-between; gap: .1rem; min-height: .42rem; padding: .03rem .03rem .03rem .12rem; background: rgba(0, 0, 0, .22); border: 1px solid var(--line); }
+.set-keys__name { min-width: 0; font-size: .15rem; line-height: 1.35; color: var(--text-md); overflow-wrap: anywhere; }
+.set-key { flex: none; display: inline-flex; align-items: center; justify-content: center; gap: .06rem; min-width: .9rem; height: .36rem; padding: 0 .1rem; background: #0a0d0c; border: 1px solid var(--line-2); color: var(--mint-400); font-family: var(--font-num); font-size: .15rem; cursor: pointer; }
+.set-key kbd { font: inherit; }
+.set-key:hover, .set-key:focus-visible { border-color: var(--mint-700); }
+.set-key.is-waiting { border-color: var(--amber); color: var(--amber); font-family: inherit; font-size: .13rem; animation: set-key-wait 1s ease-in-out infinite alternate; }
+.set-key.is-fixed { cursor: default; color: var(--text-lo); border-style: dashed; }
+.set-key.is-fixed small { font-family: inherit; font-size: .12rem; color: var(--text-dim); }
+.set-keys__note { min-height: 1.5em; font-size: .14rem; line-height: 1.5; color: var(--mint-400); }
+.set-keys__note.is-warn { color: var(--amber); }
+.set-keys__more > summary { padding: .06rem 0; font-size: .15rem; color: var(--mint-400); cursor: pointer; }
+.set-keys__more[open] > summary { margin-bottom: .08rem; }
+@keyframes set-key-wait { to { box-shadow: 0 0 .12rem rgba(246, 163, 41, .45); } }
+@media (max-width: 767px) { .set-keys__list { grid-template-columns: minmax(0, 1fr); } }
+@media (max-height: 600px) and (pointer: coarse), (max-height: 600px) and (any-pointer: coarse) {
+  .set-key { height: max(.38rem, 30px); }
+  .set-keys__more > summary { padding: max(.06rem, 8px) 0; }
+}
 
 /* ---- exit / away ------------------------------------------------------------------------------------------------------ */
 .exitm { display: flex; flex-direction: column; gap: .1rem; font-size: .17rem; line-height: 1.7; }