feedback5 CB5: the boss round's prep shows both players of a pair together — the partner's pieces on the other half, as the battle places them — and frames the pair's two avatars in the official green (community report of 2026-10-06, item 51)

The own half was already the official one (the right-hand player on the right half with the
right_boss_*_camera_param camera, its layout mirrored col c -> 20 - c with RIGHT <-> LEFT, so its operators
face the leader as before: research 09 §1.2, DESIGN §15); the partner's half stood empty and nothing framed
the pair.
Server: in a boss round's prep m.private.bossMate { playerId, side, units } = the partner's board as UnitInfo
on its half (Match.bossMateView, finalAssault.js bossFieldPlacement); markPrivate marks the partner's
m.private with the mover's, so it follows live; a scout of either player (Match.prepFieldMeta) carries both
halves (`mate`), and its signature covers the partner's board.
Client: render/app.js syncMates draws the partner's units read-only ('m:<uid>' views: never picked, dragged
or swept with the own pieces) and the whole boss field is lit; the team panel frames the pair's avatars
(gameLogic teamFrameIds: the players still in by seat, two by two, as prepCamera — the boss field in the
fight) from the round start through the Final Assault / Hidden Core, with the official ui/battle
bg_team_border tinted the autochess green (#4ed8af; a plain ring without the local art); none for a lone
player, an eliminated player, a spectator seat, or 联防.
Overlap with PR #191 (same-field frames, issue #190; not merged): it published m.public bossPairing and
framed the partner alone in gold, 联防 included, plus a banner naming the partner; here the pairing is read
as the prep camera already does, both avatars get the official green frame, boss rounds only.
[ASSUMED] the partner's bench is not shown; one frame per avatar.

Golden unchanged. Tests: test/match/feedback5-boss-pair-prep.test.js (new, 4), the item 55 test now checks
the scouted player's own pieces (the partner's stand on the other half); SP_E2E
test/ui/feedback5-boss-pair.e2e.test.js (new, 2: both halves and the frames in prep and fight; item 55's
eliminated guest on the boss field with the leader). Docs: design/client.md §10 / §15, design/network.md,
PLAYING.md.

docs/PLAYING.md

@@ -118,6 +118,7 @@
 
 - **最终攻势**（第 14 回合；独立标准为第 9 回合）：按座位两两配对，每对共享一个战场，一人守左半边、一人守右半边（右侧玩家的棋盘左右镜像）。所有人**共同削减同一条领袖血条**（血量 = 该难度的官方领袖生命值 × 开战时存活的玩家人数：领袖生命值取自当前版本的游戏数据，例如终极「假想敌：胄」3 600 000，4 人存活时为 14 400 000、2 人为 7 200 000；AI 队友和掉线托管的玩家都算，已被淘汰或中途退出的不算；独立模拟按 1 人计。这是作者 2026-10-06 采纳社区 PR #209 的决定，取代之前「保持固定血量」的做法），看不到另一组的战场。全队 LP 合并成一个池，不再有每回合 10 点上限。顶部的 120 秒倒计时结束后战斗**继续**（不会超时判负）；从开战第 150 秒起（实际秒数）全队每秒扣 1 点 LP。领袖血量归零即胜利（血条显示 0 时领袖已倒下，战斗立即结束），LP 归零即失败——以先归零的一方为准，LP 耗尽后打出的伤害不再计入。此阶段盟约不叠层。
 - **限伤**（最终攻势与隐秘核心，与官方相同）：对领袖的**单次伤害达到 300000 或以上时整次作废**——这一下造成 0 点伤害，不计入领袖血条，也不显示伤害数字；不是截到 300000，而是一点都不算（299999 照常生效）。只针对领袖本体（含两人战场里的另一个领袖），领袖的部件、护卫、无人机和其他小怪不受影响，普通回合和联防也不受影响；部件把伤害等量转给领袖时，这一下也按一次伤害检查；无人机死亡令领袖失去的 2% 血条不算一次伤害，不受限伤影响（隐秘核心终极「假想敌：胄」3 或 4 人存活时每架为 43.2 万 / 57.6 万，按限伤会整次作废，本作仍然计入，属推断）。层数极高时领袖仍可能几秒内倒下（例如每名玩家的两个盟约都在 999 层，或所有激活的盟约都在 999 层），这来自官方按层数计算、没有上限的伤害倍率（谢拉格、奥术、精准等），官方社区也有「boss一秒死」的说法。
+- 最终攻势 / 隐秘核心的休整期和战斗中一样，**同组两人在同一个关底战场上**：你在自己的半场摆位（右侧玩家看到自己在右边，摆位左右镜像，干员相对领袖的朝向不变），队友当前的阵容显示在另一半场（只能看，随他调整实时更新）；左侧成员栏里同组两人的头像带**绿框**，从回合开始一直到战斗结束。观战者查看其中一人时也会看到两人的阵容和站在关底的领袖。
 - 最终攻势 / 隐秘核心的休整期按你在**关底战场上的半场**判定可部署地块（右侧玩家左右镜像），拖动时高亮的就是可放置的格子：例如「源石流发生装置」关底图中被 1×3 橙色管子围起的地块可以部署。在最终攻势放在这些格子上的干员进入隐秘核心时会留在原位。
 - **领袖的部件**：「假想敌：胄」的无人机死亡时（不论是谁击落；漏过去不算），胄失去领袖血条总量的 2%（例如终极 4 人存活 14 400 000 → 每架 288 000；官方没写明这个「最大生命值」指哪一个，本作按血条总量处理，属推断）；隐秘核心的「斩胄之剑 / 破胄之锤」「碎铳之簧」受到的每一点伤害都会等量扣在领袖血条上（剑 / 锤被击落后一定算；俯冲途中挨的打也算，这一点官方两处文字不一致，属推断）。剑 / 锤平时悬浮在胄身边、无敌；掷出后闪现到固定路线，冲向攻击力最低的干员，途中被打中 15 次就会【瘫痪】（晕眩 10 秒、落地、受到的伤害 ×1.3）；落地或瘫痪结束后，会以剩余生命值换成一把新的回到原位。「灭顶之灾」每次只发射 1 枚刺胄之弹（低于 20% 生命也一样），只打攻击范围内攻击力最高的干员。
 - **巨型领袖**（假想敌：胄 / 管、盐风主教昆图斯、阿利斯泰尔、“萨米的意志”）的受击判定是一片约 5×3 格的区域（整个管道区块）：攻击范围碰到其中任意一格就能打到它；它们**自缚、无法被阻挡**，不会离开原地。溅射按敌人的中心判定，打在旁边小怪身上的溅射碰不到巨型领袖。

docs/design/client.md

@@ -37,7 +37,7 @@ Visuals: oblique perspective board (tilted ~30°, trapezoid tiles), raised highl
 
 Look & feel: research 06 §11–§12 (near-black green-grey panels, mint `#4ed8af` accents, gold prices, bracket frames, hexagon badges, bond discs, 7-segment countdown). Fonts: Noto Sans SC (Google Fonts with local fallback), Bender/Novecento self-hosted for numerals and Latin micro-labels.
 
-Screens: **Title** (season art backdrop, 开始 → nickname), **Lobby** (独立模拟 / 同盟模拟 → create or join; recent rooms), **Room** (4 seats, invite code + copy link, difficulty picker (host), add/remove AI, ready, start), **Briefing** (INFO_CHECK: stage, factions, disabled bonds, banned chess, boss silhouette, ready x/4), **Band draft** (grid of 40 bands with icon/name/LP/effect; turn order list; skip; 查看禁用盟约与干员 under the order list opens the briefing's bond rows, legend and banned operators again in a read-only dialog — one component, `ui/matchInfo.js`, §21.28), **Game** (Pixi field + DOM HUD: top bar with round/phase capsule/LP (live during the own battle, §17.5)/timer/ready; bond strip + popups; left team panel with LP/status/emote bubbles, click to watch; bottom shop bar (level card, 3–5 chess cards, item card, funds, refresh, freeze, collapse); detail panel on click/hover (header with bonds, then 特质 — the operator's own effect — right under it, 特性, stats (live: the battle's own numbers / the start-of-battle ones in prep, §18.5), skill, module, equipped items, talents: §17.5); enemy preview drawer (next round enemies with counts, factions; its 本局信息 tab lists the briefing's disabled bonds and banned operators, §21.28); 机变 overlay (the official card: framed icon + name, the effect text — data `descRaw` — under it, the taker's round avatar at the top-right; two taps, §18.2, §20.7); merge reward overlay (the promotion reward, or a special offer — 凯瑟琳's 定向投放 … — as item / chess cards under its source's label, with the count of offers queued behind it, §21.2); phase banners; ticker (by broadcast priority, highest first; a leader-damage line plays only in its round and a player's newer one replaces the older, §21.10); toasts; emote wheel; settings (volume, quality, show damage numbers)), **Result** (victory/defeat, rounds, per-player lineup, stats, titles, back to room).
+Screens: **Title** (season art backdrop, 开始 → nickname), **Lobby** (独立模拟 / 同盟模拟 → create or join; recent rooms), **Room** (4 seats, invite code + copy link, difficulty picker (host), add/remove AI, ready, start), **Briefing** (INFO_CHECK: stage, factions, disabled bonds, banned chess, boss silhouette, ready x/4), **Band draft** (grid of 40 bands with icon/name/LP/effect; turn order list; skip; 查看禁用盟约与干员 under the order list opens the briefing's bond rows, legend and banned operators again in a read-only dialog — one component, `ui/matchInfo.js`, §21.28), **Game** (Pixi field + DOM HUD: top bar with round/phase capsule/LP (live during the own battle, §17.5)/timer/ready; bond strip + popups; left team panel with LP/status/emote bubbles, click to watch (a boss round frames the viewer's pair in green, §15); bottom shop bar (level card, 3–5 chess cards, item card, funds, refresh, freeze, collapse); detail panel on click/hover (header with bonds, then 特质 — the operator's own effect — right under it, 特性, stats (live: the battle's own numbers / the start-of-battle ones in prep, §18.5), skill, module, equipped items, talents: §17.5); enemy preview drawer (next round enemies with counts, factions; its 本局信息 tab lists the briefing's disabled bonds and banned operators, §21.28); 机变 overlay (the official card: framed icon + name, the effect text — data `descRaw` — under it, the taker's round avatar at the top-right; two taps, §18.2, §20.7); merge reward overlay (the promotion reward, or a special offer — 凯瑟琳's 定向投放 … — as item / chess cards under its source's label, with the count of offers queued behind it, §21.2); phase banners; ticker (by broadcast priority, highest first; a leader-damage line plays only in its round and a player's newer one replaces the older, §21.10); toasts; emote wheel; settings (volume, quality, show damage numbers)), **Result** (victory/defeat, rounds, per-player lineup, stats, titles, back to room).
 
 盟约栏支持「收起／展开盟约」（GitHub #142）：收起时隐藏完整列表并关闭由列表打开的浮层，让原图标区域的指针事件到达棋盘，只保留至少 44×44 CSS px 的恢复按钮。折叠状态在本局阶段变化、观看队友时保留；展开后仍按当前观看对象显示最新盟约。按钮支持 Enter / Space，聚焦按钮时 Space 不触发准备或暂停。
 
@@ -72,6 +72,6 @@ Target: a **real 3D board layer** rendered with three.js (vendored ESM, no CDN)
 - One camera model drives both layers: `public/js/render/projection.js` keeps its public API (`worldToScreen`, `screenToWorld`/tile picking, presets, transitions) but derives it from a three.js `PerspectiveCamera` initialised from the official configBlackBoard framing, so Spine units, FX, drag/drop and hit-testing stay aligned with the 3D board.
 - Must degrade gracefully: when local-client art or WebGL2 features are missing, fall back to the current 2D atlas board; keep 60 fps (static geometry merged into few draw calls; textures mipmapped; DPR-aware).
 - Implemented (`public/js/render/board3d/*`, `render/app.js`): three.js is downloaded only when the local-art manifest lists the board atlas; the built 3D area, the drawn 2D rows and the lit rect follow `viewKind(kind, {rect})` (the field the camera actually shows: a 'prep' camera on rows ≤ 6 = `bossPrep`); the background plane is extended with mirrored copies and the clear colour matches the fog (no visible edge at any aspect); battle crates live in their own group (survive scene rebuilds) and follow the board mode (`switchableBox`: 3D mesh ⇄ 2D box on a mode switch or a lost WebGL context); quality 'low' drops shadows; `?board=2d|3d` overrides. The direction wheel's range stripes sit between the board canvas and the unit canvas.
-- Done: Final Assault / Hidden Core prep takes place on your own half of the boss field (research 09 §1.2): pieces shown at boss-field positions (row − 7; right-hand player mirrored col → 20 − col, RIGHT ↔ LEFT), drop targets and wheel directions mapped back to board coordinates (`prepCamera` → `bossPrep` in public/js/ui/gameLogic.js; covered by the playtest2 browser tests). A scout of such a board (`m.field` prep of a boss round) comes in boss-field coordinates with the player's `side` and is framed the same way, the leader standing at its spawn (0.2.0, community report item 55).
+- Done: Final Assault / Hidden Core prep takes place on your own half of the boss field (research 09 §1.2): pieces shown at boss-field positions (row − 7; right-hand player mirrored col → 20 − col, RIGHT ↔ LEFT), drop targets and wheel directions mapped back to board coordinates (`prepCamera` → `bossPrep` in public/js/ui/gameLogic.js; covered by the playtest2 browser tests). A scout of such a board (`m.field` prep of a boss round) comes in boss-field coordinates with the player's `side` and is framed the same way, the leader standing at its spawn (0.2.0, community report item 55). Both players of a pair are shown together, as in the battle (0.2.0, community report item 51): the partner's board stands on the other half (`m.private.bossMate` units, already in boss-field coordinates: mirrored on the right half, RIGHT ↔ LEFT; read-only `m:<uid>` views of `render/app.js syncMates`), the whole boss field is lit, a scout carries both halves (`mate`), and the team panel frames the pair's avatars in the official green (`ui/battle bg_team_border` tinted, a plain ring without the local art; `gameLogic teamFrameIds`) from the round's start through the fight.
 
 ---

docs/design/network.md

@@ -18,7 +18,7 @@ Platform additions (implemented): `welcome.{resumed, version}`, `welcome.diyKitt
 C→S (all carry `rid`): `g.infoReady` · `g.band {bandId}` · `g.bandSkip` · `g.bandFocus {bandId?}` (the strategy highlighted in the draft screen — what a timed-out turn takes; absent / null clears it; `WRONG_PHASE` outside BAND_DRAFT, `ALREADY` after the pick, `BAD_TARGET` for a band not allowed; §18.2) · `g.buy {slot}` · `g.refresh` · `g.freeze` · `g.levelUp` · `g.sell {uid}` · `g.move {uid, to:{area:'board', row, col}|{area:'hand', idx}, dir?}` · `g.equip {itemUid, targetUid, replaceUid?}` (`replaceUid`: which equipped item a third one replaces, §6.2) · `g.art {itemUid, row, col, dir?}` (`dir` ∈ UP|RIGHT|DOWN|LEFT from the deploy wheel, §3; absent ⇒ `to.dir`, then RIGHT; `g.move` onto the piece's own tile re-orients it; board pieces in `m.private` / `m.field {prep:true}` carry `dir`) · `g.destroy {uid}` (hand / temp items only; equipped items are locked, §6.2) · `g.reward {idx}` · `g.choice {idx}` · `g.ready {ready}` · `g.emote {id}` · `g.watch {fieldId, playerId?}` (`playerId`: the player tapped — a shared 联防 / boss pair field shows two; what an eliminated viewer follows, §25) · `g.autoplay {on}` · `g.pause {on}` (solo battles only, §14 Solo pause) · `g.unitStats {seq?}` (ROUND_START / SP_DRAFT / PREP, else `WRONG_PHASE`; eliminated: `ELIMINATED`) → push `m.unitStats` (§18.5) · `g.leave`
 S→C:
 - `m.public` — full public state on every change (throttled ≤ 10/s): `{ phase, round, lastRound, deadline, serverNow, modeId, difficulty, stageId, factions, disabledBonds, bannedChess, bossId, hiddenBossId?, teamLp?, bossHp?:{hp,max}, overtimeAt? /* FA / HC: ms epoch the overtime drain starts, §4 */, paused /* solo pause, §14 */, draft?:{order,turn,picks,skipsLeft,turnDeadline,turnSeconds /* one turn's length, 0 untimed; deadline = turnDeadline (§18.2) */,untimed}, sp?:{family,cards /* bounty cards carry descRaw?, §20.6 */,turn,picks}, players:[{playerId, seat, name, isBot, connected, alive, lp, bandId, shopLevel, boardCount, ready, bonds:[{bondId,count,active,tier,layers,harmony? /* 调和's +1 is in count, §21.26 */}], fieldId, status, pendingLp? /* COMBAT / 联防 of a normal round: the LP the player's own battle will cost at settlement so far, min(lpCapPerRound, counted leaks) — in 联防 min(lpCapPerRound, uniteLeft) — omitted when 0 and in every other phase (§17.5 live LP) */, uniteLeft? /* 联防: the leaker's enemies still standing — not spawned yet + alive + counted leaks, uncapped, live (§20.6) */}] , fields:[{fieldId, kind, players:[playerId...]}] }`
-- `m.private` — the recipient's full PlayerState view (§6.2 minus server-only data) on every change.
+- `m.private` — the recipient's full PlayerState view (§6.2 minus server-only data) on every change; in a boss round's prep also `bossMate { playerId, side, units }` — the pair partner's board on its half of the boss field (UnitInfo, mirrored on the right half), re-sent when the partner moves (0.2.0, community report item 51).
 - `m.field` — field meta when watching starts: `{ fieldId, kind, rect, stageId, units: [UnitInfo], effects? }` (the units on the field, knocked-out operators waiting to redeploy included — `Battle.fieldMeta`, §18.3). The prep-scouting field (`Match.prepFieldMeta`) puts the scouted player's **hand (整备区) and 临时整备区 into `units` as well**: held pieces as units on the hand row (row 7, col = hand slot) and temp pieces on the temp row (row 8, cols 4..8 = the temp slots; PRTS 帮助 counts the temp area with the hand; a held item is a `kind: 'item'` unit the client draws as its floating plate) — the scout renders exactly like the own prep bench, for every watcher alike, the spectator seat's copy equal to a teammate's (§23.19's "never a private view" stays the no-`m.private` rule); the scout signature `_prepScoutSig` carries the hand / temp slots, so a piece moved to another slot is a change — and carries `effects`: the scouted player's effects view (策略 / 机变 / 悬赏 …), the watched player's effects column ready-made
 - NOTE: game time in `b.snap`/`b.ev` is carried as **`gt`** (the frame's `t` is the message type).
 - Active finite zero-SP timed skills display `sp=timeLeft`, `spMax=duration` and `UF.SKILL`; after end they display