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.

test/match/board.test.js

@@ -254,8 +254,10 @@ test('withdrawing a deployed summon into a full hand: HAND_FULL like any other c
   assert.ok(drone && drone.count === 1, 'one 狼群');
   // (9,6): inside 伺夜's range ("只能部署在召唤者攻击范围内", player report #9 after 0.1.0)
   assert.deepEqual(m.handle('p_0', { t: 'g.move', uid: drone.uid, to: { area: 'board', row: 9, col: 6 } }), { ok: true });
-  // golden items never merge with each other: a plain full hand
-  for (let i = 0; i < ps.hand.length; i++) if (!ps.hand[i]) giveItem(m, ps, 'chess_item_1_02_e_b', 'hand', i);
+  // One distinct golden per empty slot: goldens do not merge, and each base stays within its shared cap.
+  const fillers = Object.values(DATA.items).filter((r) => r.isGolden && r.itemType === 'EQUIP' && (m.gd.itemPoolCopies(r.id) ?? 0) >= 2).map((r) => r.id);
+  let n = 0;
+  for (let i = 0; i < ps.hand.length; i++) if (!ps.hand[i]) giveItem(m, ps, fillers[n++], 'hand', i);
   assert.ok(ps.hand.every(Boolean) && ps.tempEmpty);
   assert.equal(m.handle('p_0', { t: 'g.move', uid: drone.uid, to: { area: 'hand', idx: 0 } }).error, ERR.HAND_FULL, 'a new card for a full hand');
   assert.equal(ps.board.get('9,6'), drone, 'the 狼群 stays on the board');