feedback7: merge fb7-dobermann — 教鞭 is the official three-choice (PR #353 by @Sukvii, the owner's decision), the Final Assault / Hidden Core pay a 战术特训 card's perfect coins (guarded by b.progress leaksBy), the bots put zero-range heavy guards on the road first (PR #339 by @IceCodeNew, placement only)

- Conflicts (the branch started at ae22335c): spec.js / protocol.js b.progress (resolved from fb7-ui-backlog + leaksBy),
  gameLogic.js / game.js exports (device tips + normalizePersonalChoice), docs/PLAYING.md / design/network.md lines
  merged against the base, META.md (画卷 note + 教鞭), test/docs-consistency.test.js pin (both fields).
- Grok review: MERGE AFTER FIXES — the HIGH (a forged boss result paid the cards) fixed on the branch (66a228c6), the
  META wording (1ab12763).
- Golden: matches 10 (the 杜宾 bot picks and the guard placement); union: coop3-ABYSS-5 differs from HEAD only in ai_2's
  dmgDealt (1238011 → 1186269), no outcome change — HEAD's side had moved it, the new placement applies on that path.
- Broad node --test 5623 (5621 pass, 0 fail, 2 skipped); lint 0 errors; typecheck; i18n strict clean.

public/js/ui/gameActions.js

@@ -64,7 +64,7 @@ export const actions = {
   art: (itemUid, row, col, dir) => act('g.art', dir ? { itemUid, row, col, dir } : { itemUid, row, col }),
   destroy: (uid) => act('g.destroy', { uid }),
   reward: (idx) => act('g.reward', { idx }),
-  choice: (idx) => act('g.choice', { idx }),
+  choice: (idx, choiceId) => act('g.choice', choiceId === undefined ? { idx } : { idx, choiceId }),
   ready: (ready) => act('g.ready', { ready }, { sfx: ready ? 'ready' : 'back' }),
   emote: (id) => act('g.emote', { id }, { quiet: true }),
   // `playerId`: the player tapped in the team panel (a shared field shows two) — what an eliminated viewer follows