fix: add big fish runtime settlement prompt

docs/technical/BIG_FISH_CREATION_AND_RUNTIME_MINIMAL_IMPLEMENTATION_2026-04-22.md

@@ -241,6 +241,7 @@
 1. 展示会话、草稿、资产槽位、运行快照。
 2. 发送聊天、action 和摇杆输入。
 3. 根据后端 snapshot 渲染实体。
+4. 当后端 snapshot 返回 `won` 或 `failed` 时，必须在玩法舞台中央显示清晰结算浮层；通关与失败都不能只依赖顶部状态标签或事件日志。
 
 前端禁止：
 

src/components/big-fish-runtime/BigFishRuntimeShell.tsx

@@ -108,6 +108,24 @@ function resolveRuntimeEntityAsset(
   );
 }
 
+function resolveSettlementCopy(run: BigFishRuntimeSnapshotResponse) {
+  if (run.status === 'won') {
+    return {
+      title: '通关完成',
+      message: `已成长到 Lv.${run.playerLevel}，本轮生态征服完成。`,
+      tone: 'from-emerald-300/28 via-cyan-300/18 to-white/10',
+    };
+  }
+  if (run.status === 'failed') {
+    return {
+      title: '本轮失败',
+      message: '己方鱼群已经耗尽，重新调整路线再来一次。',
+      tone: 'from-rose-300/30 via-orange-300/16 to-white/10',
+    };
+  }
+  return null;
+}
+
 function BigFishEntityDot({
   entity,
   run,
@@ -241,6 +259,7 @@ export function BigFishRuntimeShell({
 
   const statusLabel =
     run.status === 'won' ? '通关' : run.status === 'failed' ? '失败' : '进行中';
+  const settlementCopy = resolveSettlementCopy(run);
   const backgroundAsset =
     findBigFishAssetSlot(assetSlots, 'stage_background')?.assetUrl?.trim() || null;
 
@@ -298,6 +317,21 @@ export function BigFishRuntimeShell({
           ))}
         </div>
 
+        {settlementCopy ? (
+          <div className="pointer-events-none absolute inset-0 z-40 flex items-center justify-center px-5">
+            <div
+              className={`w-full max-w-[20rem] rounded-[2rem] border border-white/24 bg-gradient-to-br ${settlementCopy.tone} p-6 text-center shadow-2xl shadow-slate-950/45 backdrop-blur-xl`}
+            >
+              <div className="text-3xl font-black tracking-[0.22em] text-white [text-shadow:0_2px_12px_rgba(2,6,23,0.6)]">
+                {settlementCopy.title}
+              </div>
+              <div className="mt-3 text-sm font-semibold leading-6 text-white/82">
+                {settlementCopy.message}
+              </div>
+            </div>
+          </div>
+        ) : null}
+
         <div className="pointer-events-none absolute bottom-6 right-4 z-30 max-w-[13rem] space-y-2 text-right text-xs text-white/72">
           {isBusy ? <div>同步中...</div> : null}
           {error ? <div className="text-rose-200">{error}</div> : null}