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/content/garrisons_meta.test.js

@@ -839,6 +839,26 @@ test('塞雷娅 99 / 白面鸮 86: the copier runs the front operator\'s prep-en
   assert.equal(w.ps.shop.freeRefreshes, 3);
 });
 
+// Maintainer-confirmed replay of the linked official-game footage (#473): only Ptilopsis copying these two gifts.
+for (const targetId of ['chess_char_4_12_a', 'chess_char_6_03_a']) {
+  for (const ownRow of [false, true]) for (const sourceRow of [false, true]) {
+    test(`白面 copies ${targetId} gift without either row condition (own=${ownRow}, source=${sourceRow})`, () => {
+      const s = setup(11);
+      const white = give(s.m, s.ps, 'chess_char_4_21_a', 'board', [11, 4]); white.dir = 'DOWN';
+      give(s.m, s.ps, targetId, 'board', [10, 4]);
+      const fillers = plain(c => c.position === 'RANGED').slice(0, 4); let filler = 0;
+      for (const [r, on] of [[11, ownRow], [10, sourceRow]]) if (on) {
+        give(s.m, s.ps, fillers[filler++], 'board', [r, 3]);
+        give(s.m, s.ps, fillers[filler++], 'board', [r, 5]);
+      }
+      s.ps.recompute(); const before = s.ps.round.gainedChess;
+      s.roundStart();
+      assert.equal(s.ps.round.gainedChess - before, 1 + (sourceRow ? 1 : 0), 'copier always gives one; original still checks its own row');
+      s.h.invariants();
+    });
+  }
+}
+
 test('triggerGainEffects export (band 铃兰): re-runs 获得时 garrisons ×投资人 and returns the effects run', () => {
   const s = setup();
   const p = give(s.m, s.ps, 'chess_char_5_03_a', 'board', [10, 4]);   // 烛煌 炎/维多利亚 +5