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.

README.md

@@ -121,6 +121,7 @@ npm start          # 启动服务器：http://localhost:3000
 | `TRUST_PROXY` | `auto` | 是否信任 `X-Forwarded-For` 等转发头：`auto` 只信任来自本机 / 内网的代理；`1` 总是；`0` 从不 |
 | `DEBUG` | 空 | 设为任意值输出详细日志 |
 | `SP_NO_BROWSER` | 空 | 设为 `1` 时启动脚本不自动打开浏览器 |
+| `SP_BOT_EMOTES` | 空 | AI 队友的对局表情回应（战斗、整备、合成、联防、收礼时即刻的 `m.emote` 广播）；设为 `0` 时整体关闭 |
 
 设置方式：macOS / Linux `PORT=8080 npm start`；PowerShell `$env:PORT=8080; npm start`；cmd `set "PORT=8080" && npm start`。健康检查：`GET /healthz`。