0.2.3: prepare follow-up fixes and client features (#407, #408, #410, #413, #431, #435, #436, #440, #444)

Add special-target activation without bypassing attack cadence, cooperative
card preferences and emotes, skill sound banks, per-operator voice choices,
text sizing, install prompts, closed-tab recovery and unanimous setup rerolls.
Retain late deployment elapsed time and resolve echo/counter pulses without
recursive hook overflow. Independent final review remains pending.

Golden: roster-016, roster-035, roster-036, roster-045;
boss-boss_1-pair, boss-boss_3-pair, boss-boss_5-pair, boss-boss_7-pair,
hidden-boss_9-pair; solo-HARD-9-boosted: Lemuen attack cadence.
diy-132: Necras extra activation targets.
coop2-NORMAL-14-standins: cooperative purchase preference and simulation fixes.
hidden-boss_10-solo: echo pulse FIFO resolution.
See DESIGN 28.13-28.24 for assumptions, sources and contributor credit.

server/match/bot.js

@@ -603,6 +603,11 @@ function buyScore(m, ps, id, ctx) {
   if (ctx.model && !isHealer(c)) s += ARMOR_WEIGHT * 0.6 * (armorFit(ctx.model, c) - 0.6);
   // the player's own 自选 piece (a slotted slot: its composed record carries diyFor) — AI 托管 of a human with picks
   if (c.diyFor) s += DIY_PIECE_BONUS;
+  // [ASSUMED] A soft 18-point cooperation weight (PR #407), not an official rule or a reserved card.
+  // Leave high-tier shared chess to living teammates whose opening strategy needs its faction.
+  // Humans and bots count equally; a single soft penalty still allows valuable own merges.
+  if (c.tier >= 5 && !c.isGolden && !c.diyFor && m.pool.has(base) && m.alivePlayers().some((mate) =>
+    mate !== ps && gd.bandBondIds(mate.bandId).some((b) => !gd.modeInactiveBonds.has(b) && c.bonds.includes(b)))) s -= 18;
   return s;
 }