feedback7: merge fb7-g-small — PR #368 (AI teammates draft last, default off), #374 (double-click a teammate's avatar in prep), #321 (copy local diagnostics; whole-token / exact-value redaction) with the review's fixes

- Golden unchanged (union OK); broad node --test 5292 (5291 pass, 0 fail, 1 skipped); lint 0 errors.

public/js/screens/room.js

@@ -1,6 +1,6 @@
 // Room screen (同盟等待室): 4 seat cards (avatar frame, name, ready state, AI badge, host crown),
-// host controls (difficulty picker, add/remove AI in co-op, start), invite code with copy code /
-// copy link, ready toggle and leave.
+// host controls (difficulty picker, add/remove AI and the 「AI 队友最后选择」 switch in co-op, start), invite code with
+// copy code / copy link, ready toggle and leave.
 //
 // Start rule (server/lobby.js): room.start needs every *other* human connected and ready; the
 // host's start counts as the host's ready. So 开始模拟 is enabled exactly then and sends room.start
@@ -69,6 +69,19 @@ export function roomFacts(room, myId) {
   };
 }
 
+/**
+ * The co-op room option 「AI 队友最后选择」 (GitHub #338; room.setAiPicksLast, room.state.aiPicksLast): in the strategy and
+ * 机变 drafts every human picks before the AI teammates. null in a solo room (no AI teammates); otherwise its state (off
+ * when the server sends none) and whether this player may switch it — the host only, the others see it read-only.
+ * @param {any} room room.state payload
+ * @param {any} myId
+ * @returns {{ on: boolean, editable: boolean } | null}
+ */
+export function aiLastOption(room, myId) {
+  if (!room || room.mode === 'solo') return null;
+  return { on: room.aiPicksLast === true, editable: room.hostId != null && room.hostId === myId };
+}
+
 /** Invite link for a room code (current page URL with ?room=CODE). */
 export function inviteLink(code) {
   const loc = globalThis.location;
@@ -189,6 +202,21 @@ function DifficultyPicker({ room, isHost, busy, onPick }) {
   </div>`;
 }
 
+/** The 「AI 队友最后选择」 switch (co-op): the host toggles it, everybody else sees its state. */
+function AiLastToggle({ option, busy, onToggle }) {
+  if (!option) return null;
+  return html`<div class="ailast">
+    <${Tooltip} text=${t('策略与机变轮选时，所有博士先于 AI 队友选择')}>
+      <button type="button" role="switch" aria-checked=${option.on ? 'true' : 'false'}
+          class=${`dpick__opt ailast__opt${option.on ? ' is-active' : ''}`} disabled=${!option.editable || !!busy}
+          onClick=${() => option.editable && onToggle(!option.on)}>
+        <${Icon} name="check" class=${option.on ? 'is-on' : ''} />${t('AI 队友最后选择')}
+      </button>
+    <//>
+    ${option.editable ? null : html`<span class="t-dim">${t('由创建者设置')}</span>`}
+  </div>`;
+}
+
 /** Room screen component. */
 export function RoomScreen() {
   const room = useStore((s) => s.room);
@@ -229,6 +257,7 @@ export function RoomScreen() {
     if (ok) run(`kick${seat}`, () => net.request('room.kick', { seat, playerId }));
   };
   const setDifficulty = (difficulty) => run('diff', () => net.request('room.setDifficulty', { difficulty }));
+  const setAiLast = (on) => run('ailast', () => net.request('room.setAiPicksLast', { on }));
   // spectator seats: the host frees one; a spectator takes a free player seat with room.join of this room
   const removeSpectator = (playerId) => run(`rs${playerId}`, () => net.request('room.removeSpectator', { playerId }));
   const sit = () => run('sit', () => net.request('room.join', { code: room.code }));
@@ -307,7 +336,10 @@ export function RoomScreen() {
     <footer class="room-bar">
       <div class="room-bar__left">
         <span class="room-bar__label">${t('模拟难度')}<${MicroLabel}>DIFFICULTY<//></span>
-        <${DifficultyPicker} room=${room} isHost=${facts.isHost} busy=${busy} onPick=${setDifficulty} />
+        <div class="room-bar__opts">
+          <${DifficultyPicker} room=${room} isHost=${facts.isHost} busy=${busy} onPick=${setDifficulty} />
+          <${AiLastToggle} option=${aiLastOption(room, me.playerId)} busy=${busy} onToggle=${setAiLast} />
+        </div>
       </div>
       <div class="room-bar__center">
         <div class="ready-count" hidden=${!coop}>