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/i18n/en.json

@@ -138,7 +138,7 @@
   "显示伤害数字": "Damage Numbers",
   "画面质量": "Graphics Quality",
   "触屏操作：点击单位选中（撤退 / 出售）· 长按单位或卡牌查看详情 · 拖动部署后滑动选择朝向": "Touch controls: tap a unit to select it (Retreat / Sell) · long-press a unit or card for details · after dragging to deploy, swipe to choose a direction",
-  "快捷键：": "Hotkeys: ",
+  "快捷键": "Hotkeys",
   "发生未知错误": "An unknown error occurred",
   "标准模拟": "Standard Simulation",
   "险境模拟": "Perilous Simulation",
@@ -610,8 +610,8 @@
   "休整期可以查看即将迎击的敌方单位": "Upcoming enemies can be viewed during the Rest Phase",
   "已流失": "Lost",
   "暂停": "Pause",
-  "继续作战（Space）": "Resume Battle (Space)",
-  "暂停作战（Space）": "Pause Battle (Space)",
+  "继续作战（{key}）": "Resume Battle ({key})",
+  "暂停作战（{key}）": "Pause Battle ({key})",
   "离开 / 暂离": "Leave / Step Away",
   "部署费用（再部署消耗）": "DP Cost (spent on redeploy)",
   "攻击力": "ATK",
@@ -660,7 +660,7 @@
   "已购买": "Purchased",
   "已招募": "Recruited",
   "再次点击确认升级（{price} 资金）": "Tap again to confirm upgrade ({price} Funds)",
-  "升级调度中心（{price} 资金） · D": "Upgrade Dispatch Center ({price} Funds) · D",
+  "升级调度中心（{price} 资金） · {key}": "Upgrade Dispatch Center ({price} Funds) · {key}",
   "已满级": "Max Level",
   "确认升级": "Confirm Upgrade",
   "稍后选择（回合结束后消失）": "Pick later (expires at the end of the round)",
@@ -670,10 +670,10 @@
   "剩余可放置角色：": "Deployable units left:",
   "目前资金": "Current Funds",
   "收起": "Collapse",
-  "解冻商店 · F": "Unfreeze Shop · F",
-  "冻结商店（下回合保留） · F": "Freeze Shop (kept next round) · F",
+  "解冻商店 · {key}": "Unfreeze Shop · {key}",
+  "冻结商店（下回合保留） · {key}": "Freeze Shop (kept next round) · {key}",
   "解冻": "Unfreeze",
-  "刷新商店 · R": "Refresh Shop · R",
+  "刷新商店 · {key}": "Refresh Shop · {key}",
   "免费 ×{free}": "Free ×{free}",
   "查看 {name} 的战场": "View {name}'s Battlefield",
   "查看自己的阵地": "View your Field",
@@ -765,9 +765,25 @@
   "toggle::关闭": "Off",
   "撤退选中干员": "Retreat selected Operator",
   "出售选中干员": "Sell selected Operator",
-  "关闭弹窗": "Close window",
+  "取消 / 关闭": "Cancel / Close",
   "语言": "Language",
   "右键查看详情": "Right-click for details",
+  "刷新商店": "Refresh Shop",
+  "冻结 / 解冻商店": "Freeze / Unfreeze Shop",
+  "升级调度中心": "Upgrade Dispatch Center",
+  "准备就绪 / 暂停（独立模拟）": "Ready / Pause (Solo)",
+  "不可更改": "Fixed",
+  "按下新按键…": "Press a key…",
+  "更改「{action}」的快捷键（当前：{key}）": "Change the hotkey for {action} (now {key})",
+  "请按下「{action}」的新按键（Esc 取消）": "Press the new key for {action} (Esc to cancel)",
+  "「{action}」已改为 {key}": "{action} is now {key}",
+  "「{action}」已改为 {key}；「{other}」原来用 {key}，已换成 {old}": "{action} is now {key}; {other} had {key} and now uses {old}",
+  "{key} 不能设为快捷键：Esc、Tab、Enter、方向键和功能键留给界面使用": "{key} cannot be a hotkey: Esc, Tab, Enter, the arrow keys and the function keys belong to the interface",
+  "快捷键只能是单个按键，不能搭配 Ctrl、Alt 或 ⌘": "A hotkey is a single key, without Ctrl, Alt or ⌘",
+  "已取消，「{action}」仍是 {key}": "Cancelled: {action} stays {key}",
+  "已恢复默认快捷键": "Default hotkeys restored",
+  "快捷键需要实体键盘；触屏设备连接键盘后可用": "Hotkeys need a physical keyboard; connect one to use them on a touch device",
+  "查看 / 更改快捷键": "Show / change hotkeys",
   "观战中无法进行该操作": "Spectators cannot do that",
   "标准": "Standard",
   "险境": "Perilous",
@@ -1001,10 +1017,10 @@
   "目标生命值 {lp}，联防中，结算时扣除至多 {pending} 点": "LP {lp}, Unite in progress: settlement costs up to {pending} LP",
   "目标生命值 {lp}，结算时扣除 {pending} 点": "LP {lp}: settlement costs {pending} LP",
   "{name} 操作": "{name} actions",
-  "撤退至整备区（Q）": "Retreat to Bench (Q)",
-  "撤退[Q]": "Retreat [Q]",
-  "出售（+{sell} 资金，X）": "Sell (+{sell} Funds, X)",
-  "出售[X]": "Sell [X]",
+  "撤退至整备区（{key}）": "Retreat to Bench ({key})",
+  "撤退[{key}]": "Retreat [{key}]",
+  "出售（+{sell} 资金，{key}）": "Sell (+{sell} Funds, {key})",
+  "出售[{key}]": "Sell [{key}]",
   "临时整备区 {n} 件道具待处理": "Temporary Bench: {n} {count|item|items} pending",
   "{name}：部分盟约所含干员阵容不完整（{bannedN} 名干员无法出现）": "{name}: some of the Alliance's Operators cannot appear ({bannedN} {bannedN|Operator|Operators} banned)",
   "{name}：部分盟约所含干员阵容不完整": "{name}: some of the Alliance's Operators cannot appear",