fix(media): 视频播放 - 资源视频改走 playback 变体，失败后刷新签名并重试

画布预览、生成回填和项目水合都解析浏览器可播地址；播放失败时绕过展示缓存，等待转码完成后强制刷新 playback 地址。

web/src/services/file-storage.ts

@@ -3,7 +3,7 @@ import { nanoid } from "nanoid";
 
 import { getActiveUserScope } from "@/lib/user-scope";
 import { captureVideoPoster, detectVideoAudioTrackFromBlob } from "@/lib/video-poster";
-import { getResourceAccess, resolveResourceAccessURL, resourceFileUrl, resourceIdFromStorageKey, resourceStorageKey, ResourceUploadError, uploadResourceFile } from "@/services/api/resources";
+import { getResourceAccess, resolveResourceAccessURL, resourceFileUrl, resourceIdFromStorageKey, resourceStorageKey, ResourceUploadError, uploadResourceFile, type ResourceAccessVariant } from "@/services/api/resources";
 import { uploadImage, type UploadedImage } from "@/services/image-storage";
 import { getCachedResourceBlob, primeResourceBlobCache } from "@/services/resource-blob-cache";
 
@@ -93,7 +93,17 @@ export async function uploadMediaFile(input: Blob, prefix = "file", onProgress?:
                 // 缓存只影响后续读取性能，服务端资源已经成功落盘，不得把缓存失败误报为上传失败。
                 console.warn("预热媒体缓存失败，服务端资源已保存", { resourceId: resource.id, error });
             }
-            return { url: resource.publicUrl || resourceFileUrl(resource.id), storageKey: resourceStorageKey(resource.id), bytes: resource.size || blob.size, mimeType: resource.mimeType || blob.type || "application/octet-stream", width: resource.width || meta.width, height: resource.height || meta.height, durationMs: resource.durationMs || meta.durationMs, hasAudio: meta.hasAudio, preview: poster };
+            return {
+                url: resource.publicUrl || resourceFileUrl(resource.id),
+                storageKey: resourceStorageKey(resource.id),
+                bytes: resource.size || blob.size,
+                mimeType: resource.mimeType || blob.type || "application/octet-stream",
+                width: resource.width || meta.width,
+                height: resource.height || meta.height,
+                durationMs: resource.durationMs || meta.durationMs,
+                hasAudio: meta.hasAudio,
+                preview: poster,
+            };
         } catch (error) {
             // 与图片上传同一套判定：永久性失败必须当场暴露，不能混进“稍后自动同步”。
             if (error instanceof ResourceUploadError && error.permanent) throw error;
@@ -111,12 +121,12 @@ export async function uploadMediaFile(input: Blob, prefix = "file", onProgress?:
     }
 }
 
-export async function resolveMediaUrl(storageKey?: string, fallback = "") {
+export async function resolveMediaUrl(storageKey?: string, fallback = "", variant: ResourceAccessVariant = "original") {
     if (!storageKey) return fallback;
     const resourceId = resourceIdFromStorageKey(storageKey);
     if (resourceId) {
         // 展示直接命中 OSS/CDN；平台资源文件接口只保留给私有源站代理或本地存储兜底。
-        return resolveResourceAccessURL((await getResourceAccess(storageKey, "display")).url);
+        return resolveResourceAccessURL((await getResourceAccess(storageKey, "display", variant)).url);
     }
     const cached = objectUrls.get(storageKey);
     if (cached) return cached;
@@ -127,6 +137,11 @@ export async function resolveMediaUrl(storageKey?: string, fallback = "") {
     return url;
 }
 
+/** Resolve a video through the browser-compatible playback variant when one exists. */
+export function resolveVideoMediaUrl(storageKey?: string, fallback = "") {
+    return resolveMediaUrl(storageKey, fallback, "playback");
+}
+
 export async function getMediaBlob(storageKey: string) {
     if (resourceIdFromStorageKey(storageKey)) return getCachedResourceBlob(storageKey);
     return store.getItem<Blob>(storageKey);