0.2.4-dev: round-29 community fixes and the official shared card pool

- Shared card pool and item stock as in the official mode (the owner's request, from the 路标档案馆 video and public notes): solo low-tier exceptions, co-op operators x2, shared item stock with special-item exceptions, normal / advanced occupancy 1 / 2, re-check on buy, 机变 exhaustion, release on consume / destroy / elimination; 整备 never exceeds stock; invariant held <= cap.
- 突袭: one taunt-first reselect right after a revive (the owner's rule); ordinary polls and redeploys keep the 0.2.3 rule; a revive on an enemy's tile stays. #475: online boss / hidden-boss Raid may land on the empty half (owner-limited scope).
- 浊心斯卡蒂 S1 x 坚守 no longer bounce redirected damage, and the two shares conserve the hit (idea of PR #464 by @HappyTanuki).
- Operator fixes adapted from PRs by @Xinglan233 (#459 哈洛德 S2 elemental trigger, #460 涤火杰西卡 shield on the four adjacent tiles, #461 家族徽章 first hit after stealth, #462 松果 S2 regrow per deploy); 克莱门莎 S2 splash 1.1 / 100% ATK and air auto-trigger (#467); 白面 copying 歌蕾蒂娅 / 余 skips the three-member condition (#473, the owner's video).
- 香槟炸弹 is not chosen by friendly auras / heals (PR #468 / #476 by @Siornya); 琳琅诗怀雅 coin balance (PR #450 by @IceCodeNew); Touch prep display (PR #451 by @YinqiMargatroid); lobby header (PR #471 by @YuriRestia); Japanese UI terms (PR #448 by @scutkane).
- AI-only boss countdown grace, render-failure cache / recovery without restarting a battle, device units kept on a same-field re-entry, DIY detail / skill previews, large-text result buttons.
- golden: battle families equal 0.2.3 except diy-135 / diy-136 (克莱门莎); all 18 release matches move through the shared pool, every flip named in docs/history/0.2.4.md §29.12; two coverage scenarios added.

docs/design/client.md

@@ -63,7 +63,7 @@ Audio: autochess BGM per phase, UI SFX (buy/sell/refresh/level/merge/ready/timer
 - `guide/autochess_{home,shop,handbook}_N.png` — the 19 official tutorial pages; stored squashed to 1024² — **display at 16:9** (the mirror copies too, §22.5).
 - `projectiles/*` — battle projectile sprites.
 - `spine/enemy/<id>/` — enemy models no web dump carries (灼热 / 炽焰源石虫, `extract.py ENEMY_SPINES`): manifest `enemies[id].spineLocal` (metadata from the committed `tools/assets/local-enemy-spines.json`); drawn instead of the tinted web alias when every file is listed (§21.14).
-- `spine/token/<id>/` — token (summon) models no web dump carries (39: most 自选 summons, 凯瑟琳's 爬行号·防护单元, 凛御银灰's 风雪之眼; `extract.py TOKEN_SPINES`, the Front renderer's skeleton of each battle token prefab): manifest `tokens[id].spineLocal` (metadata from the committed `tools/assets/local-token-spines.json`); drawn instead of the avatar diamond when every file is listed (docs/ASSETS.md "Token models from the local client").
+- `spine/token/<id>/` — token (summon) models no web dump carries (40: most 自选 summons, 凯瑟琳's 爬行号·防护单元, 凛御银灰's 风雪之眼; `extract.py TOKEN_SPINES`, the Front renderer's skeleton of each battle token prefab): manifest `tokens[id].spineLocal` (metadata from the committed `tools/assets/local-token-spines.json`); drawn instead of the avatar diamond when every file is listed (docs/ASSETS.md "Token models from the local client").
 - `module/<TYPE>` — the official module (uniequip) TYPE icons (white glyphs; keys are the client's mixed-case file names, e.g. `PRI-X`, `mar-x`, `isw-a`), matched **case-insensitively** against a ModuleRecord's `typeName` by `assetUrls.moduleTypeIconUrl(local, typeName)` (Greek type letters map to the file's Latin letter: `ISW-α` → `isw-a`) — shown on the 干员调配 module cards / module info, the detail panel's 模组 row and the shop card's module tag; lettered tiles / type text without them.
 
 ---
@@ -141,5 +141,12 @@ shows the current base pose. A subsequent attack/death supersedes that pending e
 or per-phase animation schedule is added by this change.
 
 The simplified-view notice describes a renderer load failure, rather than declaring the device incapable of 3D.
+On same-battle metadata refresh, remembered once-spawned device records also seed the renderer's new entry (§29.14).
+This preserves device tile picking and live-HP cards; records explicitly supplied by the refresh take precedence,
+and a different field never inherits the previous field's devices.
 The same fallback covers import failure, timeout and WebGL initialization errors; a reload can retry.
 It does not diagnose a particular user's GPU or persist a disabled renderer preference (§28.25).
+
+Community UI and recovery (§29.6): DIY reuses roster stats and skill previews; Swire's coins show current/cap. The lobby player chip opens statistics and the responsive header keeps optional controls from overlapping its title. Settlement's summary scrolls separately from Return. Failed board art can retry, and failed three.js imports use two bounded fresh URLs. Failed engine initialization can remount on online/visibility, at most twice consecutively, cleaning up each previous view; explicit fallback/2D stays selected.
+
+Replacing a field renderer also resets the game screen's entered-view identity. Frames are buffered while the replacement loads; after subscribing, the local runner re-shows full current metadata/snapshot, or the server resends the watched field. Real local and server-streamed battles preserve the same simulation object and clock through recovery, including enemies spawned before the new renderer existed.