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.

public/js/main.js

@@ -136,6 +136,7 @@ function maybeFinishRestore() {
  * follow the store themselves).
  */
 function backToLobby() {
+  identity.rememberMatch(null);
   clearTimeout(restoreTimer);
   const s = store.get();
   if (s.room || s.match.public) closeAllDialogs();
@@ -145,6 +146,7 @@ function backToLobby() {
 
 function onWelcome(msg) {
   identity.saveToken(msg.token);
+  identity.rememberMatch(null);
   const prev = store.get();
   const prevId = prev.me.playerId;
   const name = typeof msg.name === 'string' && msg.name ? msg.name : prev.me.name;
@@ -188,6 +190,8 @@ function onRoomState(msg) {
   // A (new) match starts: forget the previous match's state so stale results never show.
   if (room.inMatch && !(prevRoom && prevRoom.inMatch && prevRoom.code === room.code)) store.set({ match: emptyMatch() });
   store.set({ room });
+  identity.rememberMatch(room.inMatch && seats.some((seat) => seat?.playerId === myId)
+    ? { name: store.get().me.name, code: room.code || '' } : null);
   if (room.mode === 'coop' && typeof room.code === 'string') rememberRoom(room.code);
   maybeFinishRestore();
 }