feat: improve subject generation workflow

web/app/page.tsx

@@ -17,6 +17,7 @@ import { AdRecreationBoard } from "@/components/ad-recreation-board"
 import {
   addManualFrame, analyzeJob, createJob, getJob, listJobs, uploadJob, deleteJob, deleteFrame, deleteGeneratedImage,
   deleteGeneratedVideo, deleteCutout, generateStoryboardVideo, triggerTranscribe, describeFrame, updateStoryboard, copyProductLibraryAsset,
+  formatJobError, retryJobDownload,
   type Job, type ImageRef, type KeyFrame, type ProductFusionShot, type StoryboardScene, type FrameExtractMode, type FrameExtractQuality, type FrameExtractTarget,
 } from "@/lib/api"
 import { TRANSPARENT_HUMAN_NEGATIVE_PROMPT, TRANSPARENT_HUMAN_VIDEO_PROMPT } from "@/lib/workflow-target"
@@ -569,15 +570,30 @@ export default function Home() {
   const handleStartProduction = useCallback(async (inputUrl?: string) => {
     const trimmed = inputUrl?.trim()
     const created = trimmed ? await handleSubmit(trimmed) : undefined
-    const target = created ?? job
+    let target = created ?? job
     if (!target) {
       toast.info("先粘贴视频链接或选择一个素材任务")
       return
     }
+    if (!created && target.status === "failed") {
+      autoTriggeredRef.current.delete(`${target.id}:audio`)
+      autoTriggeredRef.current.delete(`${target.id}:visual`)
+    }
+    if (!created && target.status === "failed" && !target.video_url) {
+      try {
+        target = await retryJobDownload(target.id)
+        updateJobInList(target)
+        toast.info("已重新提交下载；下载完成后会自动跑音频文案路和视觉抽帧路")
+      } catch (e) {
+        toast.error("重新下载失败：" + (e instanceof Error ? e.message : String(e)))
+        return
+      }
+    }
     setProductionJobIds((prev) => new Set(prev).add(target.id))
-    toast.success("已进入并行素材分析：下载完成后自动跑音频文案路和视觉抽帧路")
+    if (target.video_url) toast.success("已进入并行素材分析：音频文案路和视觉抽帧路会同步推进")
+    else toast.success("已进入并行素材分析：下载完成后自动跑音频文案路和视觉抽帧路")
     void startProductionLanesForJob(target)
-  }, [handleSubmit, job, startProductionLanesForJob])
+  }, [handleSubmit, job, startProductionLanesForJob, updateJobInList])
 
   useEffect(() => {
     if (productionJobIds.size === 0) return
@@ -860,6 +876,9 @@ export default function Home() {
     if (job?.status === "downloaded" && prevStatusRef.current !== "downloaded") {
       toast.info("视频已下载，音频解析会自动开始；也可以在右侧手动重试", { duration: 6000 })
     }
+    if (job?.status === "failed" && prevStatusRef.current !== "failed") {
+      toast.error(formatJobError(job.error) || "任务失败", { duration: 10000 })
+    }
     prevStatusRef.current = job?.status ?? null
 
     const TERMINAL: Job["status"][] = ["downloaded", "frames_extracted", "transcribed", "failed"]