feat(media): 作品保存恢复 - 按原任务重试交付并避免重复生成计费

web/src/lib/canvas/canvas-generation-task-sync.ts

@@ -321,6 +321,8 @@ function completedTaskMetadata(task: GenerationTask): CanvasNodeMetadata {
         taskStatus: task.status,
         taskProgress: typeof task.progress === "number" && Number.isFinite(task.progress) ? Math.max(0, Math.min(100, Math.round(task.progress))) : 100,
         taskStage: task.stage,
+        taskMediaStage: task.mediaStage,
+        taskCanRecoverMedia: task.canRecoverMedia,
         taskStartedAt: task.startedAt,
         taskCompletedAt: task.completedAt,
         taskDurationMs: task.startedAt && task.completedAt ? Math.max(0, Date.parse(task.completedAt) - Date.parse(task.startedAt)) : undefined,

web/src/lib/canvas/canvas-project-generation.ts

@@ -158,6 +158,8 @@ export function generationTaskMetadata(task: GenerationTask): CanvasNodeMetadata
         taskStatus: task.status,
         taskProgress: progress,
         taskStage: task.stage,
+        taskMediaStage: task.mediaStage,
+        taskCanRecoverMedia: task.canRecoverMedia,
         taskProvider: task.provider,
         taskStartedAt: task.startedAt,
         taskCompletedAt: task.completedAt,

web/src/lib/canvas/canvas-task-state.ts

@@ -23,6 +23,8 @@ export function resetGenerationTaskMetadata(metadata: CanvasNodeMetadata | undef
     delete next.taskStatus;
     delete next.taskProgress;
     delete next.taskStage;
+    delete next.taskMediaStage;
+    delete next.taskCanRecoverMedia;
     delete next.taskProvider;
     delete next.taskStartedAt;
     delete next.taskCompletedAt;