From 10ca2341a18039ebf02dfd6effa2e4d094a9c349 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=8E=8B=E5=BE=B7=E5=AE=87?= <kvtodev@outlook.com>
Date: Tue, 6 Oct 2026 18:52:39 +0800
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- useGameDistributionPublishForm 新增 previousCoverRef 与跟随 cover 的 effect，换封面 / 移除封面 / AI 生成覆盖时释放上一张的 blob 地址
---
 .../useGameDistributionPublishForm.ts         | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/apps/ai-game-creator-shell/src/components/game-distribution/useGameDistributionPublishForm.ts b/apps/ai-game-creator-shell/src/components/game-distribution/useGameDistributionPublishForm.ts
index f890bb928..3584d74f1 100644
--- a/apps/ai-game-creator-shell/src/components/game-distribution/useGameDistributionPublishForm.ts
+++ b/apps/ai-game-creator-shell/src/components/game-distribution/useGameDistributionPublishForm.ts
@@ -215,6 +215,31 @@ export function useGameDistributionPublishForm({
   // 文件签名 → 素材 ID：同一次打开面板重复提交不会重复上传同一张图。
   const uploadedAssetCacheRef = useRef(new Map<string, string>());
   const objectUrlsRef = useRef(new Set<string>());
+  /** 上一张封面：替换 / 移除 / AI 生成覆盖时用来回收它的预览 blob 地址。 */
+  const previousCoverRef = useRef<PanelImageAsset | null>(null);
+
+  /**
+   * 封面预览地址跟着封面走：换封面、移除封面、AI 生成覆盖都会丢掉上一张的 blob 地址，
+   * 不在这里统一回收就会一路泄漏到面板卸载（卸载清理只认 `objectUrlsRef`）。
+   */
+  useEffect(() => {
+    const previous = previousCoverRef.current;
+    previousCoverRef.current = cover;
+    if (
+      !previous ||
+      previous === cover ||
+      !previous.previewUrl ||
+      !objectUrlsRef.current.has(previous.previewUrl)
+    ) {
+      return;
+    }
+    try {
+      URL.revokeObjectURL(previous.previewUrl);
+    } catch {
+      // 预览地址释放失败不影响换封面 / 移除封面。
+    }
+    objectUrlsRef.current.delete(previous.previewUrl);
+  }, [cover]);
 
   useEffect(() => {
     if (!open) return;