fix(canvas): persist video uploads and fix media cache/polling

- VideoNode upload now goes through backend (/jobs/upload via uploadCanvasVideo)
  for a stable reloadable URL instead of a session-only blob: that leaked and
  broke on reload; cleanNodeForStorage also strips blob: URLs
- useCachedMediaUrl: record real blob.size (chunked videos reported 0, making the
  LRU byte cap a no-op); guard the catch path with the race token
- useApi: send credentials when reading reference images; drop the node-level
  video poll that duplicated the Canvas-level syncPendingVideoNodes loop
- request.js: 60s timeout (was ~8.3h) + withCredentials
- remove dead getVideoTaskStatus/pollVideoTask that ignored taskId

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

web/canvas-app/src/api/video.js

@@ -17,29 +17,6 @@ export const createVideoTask = (data, options = {}) => {
   })
 }
 
-// 查询视频任务状态
-export const getVideoTaskStatus = (taskId, options = {}) => {
-  const { endpoint = '/videos' } = options
-  return request({
-    url: `${endpoint}`,
-    method: 'get'
-  })
-}
-// 轮询视频任务直到完成
-export const pollVideoTask = async (taskId, maxAttempts = 120, interval = 5000) => {
-  for (let i = 0; i < maxAttempts; i++) {
-    const result = await getVideoTaskStatus(taskId)
-
-    if (result.status === 'completed' || result.data) {
-      return result
-    }
-
-    if (result.status === 'failed') {
-      throw new Error(result.error?.message || '视频生成失败')
-    }
-
-    await new Promise(resolve => setTimeout(resolve, interval))
-  }
-
-  throw new Error('视频生成超时')
-}
+// NOTE: getVideoTaskStatus / pollVideoTask were removed — they ignored taskId and
+// polled the list endpoint, and were superseded by readVideoTask() in hooks/useApi.js
+// plus the Canvas-level syncPendingVideoNodes() loop. Nothing imported them.

web/canvas-app/src/components/nodes/VideoNode.vue

@@ -147,6 +147,7 @@ import { NIcon, NSpin } from 'naive-ui'
 import { TrashOutline, ExpandOutline, VideocamOutline, CopyOutline, CloseCircleOutline, DownloadOutline, EyeOutline, CreateOutline } from '@vicons/ionicons5'
 import { updateNode, removeNode, duplicateNode, addNode, addEdge, nodes } from '../../stores/canvas'
 import { useCachedMediaUrl } from '../../hooks/useCachedMediaUrl'
+import { uploadCanvasVideo } from '../../hooks/useApi'
 import NodeHandleMenu from './NodeHandleMenu.vue'
 
 const props = defineProps({
@@ -195,14 +196,21 @@ const handleSelect = (item) => {
 }
 
 // Handle file upload | 处理文件上传
-const handleFileUpload = (event) => {
-  const file = event.target.files[0]
-  if (file) {
-    const url = URL.createObjectURL(file)
-    updateNode(props.id, { 
-      url,
-      updatedAt: Date.now()
-    })
+const handleFileUpload = async (event) => {
+  const file = event.target.files?.[0]
+  if (!file) return
+  // reset so picking the same file again still fires @change
+  event.target.value = ''
+  // Upload to the backend and store the returned stable URL. A blob: object URL
+  // would leak (never revoked) and, once persisted, breaks on project reload.
+  updateNode(props.id, { loading: true })
+  try {
+    const { url } = await uploadCanvasVideo(file)
+    updateNode(props.id, { url, loading: false, updatedAt: Date.now() })
+    window.$message?.success('视频已上传')
+  } catch (e) {
+    updateNode(props.id, { loading: false })
+    window.$message?.error(`视频上传失败：${e?.message || e}`)
   }
 }
 

web/canvas-app/src/hooks/useApi.js

@@ -49,7 +49,7 @@ const imageSourceToFile = async (source, filename = 'reference.jpg') => {
   if (typeof source !== 'string') return null
   if (source.startsWith('data:')) return dataUrlToFile(source, filename)
   const url = source.startsWith('/jobs/') ? apiUrl(source) : source
-  const response = await fetch(url)
+  const response = await fetch(url, { credentials: 'include' })
   if (!response.ok) throw new Error(`读取参考图失败 ${response.status}`)
   const blob = await response.blob()
   return new File([blob], filename, { type: blob.type || 'image/jpeg' })
@@ -82,6 +82,20 @@ export const uploadCanvasImage = async (file) => {
   }
 }
 
+export const uploadCanvasVideo = async (file) => {
+  if (!file) throw new Error('请选择视频文件')
+  const form = new FormData()
+  form.append('file', file)
+  // Persist the upload server-side so the node keeps a stable, reloadable URL
+  // instead of a session-only blob: URL that breaks once the project reloads.
+  const job = await requestJson('/jobs/upload', { method: 'POST', body: form })
+  if (!job?.id) throw new Error('视频已上传但未返回任务地址')
+  return {
+    url: toAssetUrl(`/jobs/${job.id}/video.mp4`),
+    jobId: job.id
+  }
+}
+
 const newestGeneratedImage = (job, frameIdx = 0) => {
   const frame = (job.frames || []).find(item => item.index === frameIdx) || job.frames?.[0]
   return [...(frame?.generated_images || [])].sort((a, b) => (b.created_at || 0) - (a.created_at || 0))[0]
@@ -299,57 +313,11 @@ export const useVideoGeneration = () => {
     }
   }
 
-  const pollVideoTask = async (pollTaskId, onProgress = () => {}) => {
-    const maxAttempts = 720
-    const interval = 5000
-    let transientFailures = 0
-
-    for (let i = 0; i < maxAttempts; i += 1) {
-      try {
-        const snapshot = await readVideoTask(pollTaskId)
-        const item = snapshot.video
-        transientFailures = 0
-        const percentage = item.progress || Math.min(Math.round((i / maxAttempts) * 100), 98)
-        onProgress(i + 1, percentage)
-        progress.attempt = i + 1
-        progress.percentage = percentage
-        if (item.status === 'completed') {
-          const result = { ...item, url: snapshot.url }
-          video.value = result
-          setSuccess()
-          return result
-        }
-        if (item.status === 'failed') {
-          const err = new Error(item.error || '视频生成失败')
-          err.terminal = true
-          throw err
-        }
-      } catch (err) {
-        if (err.terminal) throw err
-        transientFailures += 1
-        if (transientFailures >= 24) {
-          const retryable = new Error(err.message || '视频状态同步暂时中断')
-          retryable.retryable = true
-          throw retryable
-        }
-      }
-      await new Promise(resolve => setTimeout(resolve, interval))
-    }
-    const retryable = new Error('视频仍在生成，已交给后台同步')
-    retryable.retryable = true
-    throw retryable
-  }
-
-  const generate = async (params) => {
-    const { taskId: newTaskId, url } = await createVideoTaskOnly(params)
-    if (url) {
-      video.value = { url }
-      return video.value
-    }
-    return pollVideoTask(newTaskId)
-  }
-
-  return { loading, error, status, video, taskId, progress, generate, reset, createVideoTaskOnly, pollVideoTask }
+  // Node-local polling was removed: video status is owned by the Canvas-level
+  // syncPendingVideoNodes() interval (views/Canvas.vue), which reads snapshots via
+  // readVideoTask() and is properly torn down on unmount. A second per-node poll
+  // here just duplicated requests and had no unmount stop.
+  return { loading, error, status, video, taskId, progress, reset, createVideoTaskOnly }
 }
 
 export const useApi = () => {

web/canvas-app/src/hooks/useCachedMediaUrl.js

@@ -81,10 +81,11 @@ const pruneMediaCache = async (cache, index) => {
   return kept
 }
 
-const touchCacheEntry = (key, response) => {
+const touchCacheEntry = (key, response, sizeOverride) => {
   const index = readIndex()
+  const measured = Number(sizeOverride)
   index[key] = {
-    size: responseSize(response) || index[key]?.size || 0,
+    size: measured > 0 ? measured : (responseSize(response) || index[key]?.size || 0),
     contentType: response.headers.get('content-type') || index[key]?.contentType || '',
     lastAccess: Date.now()
   }
@@ -115,8 +116,18 @@ const warmMediaCache = async (source) => {
     const type = response.headers.get('content-type') || ''
     if (!/^(image|video|audio)\//i.test(type)) return
 
+    // Measure the real byte size from a clone — videos are usually served with
+    // chunked transfer (no content-length), which would record size=0 and make
+    // the LRU byte cap a no-op (everything looks "free" to keep).
+    const measureClone = response.clone()
     await cache.put(key, response.clone())
-    const index = touchCacheEntry(key, response)
+    let realSize = 0
+    try {
+      realSize = (await measureClone.blob()).size
+    } catch {
+      realSize = 0
+    }
+    const index = touchCacheEntry(key, response, realSize)
     await pruneMediaCache(cache, index)
   })().finally(() => {
     inflight.delete(key)
@@ -175,7 +186,8 @@ export const useCachedMediaUrl = (sourceGetter) => {
           return
         }
       } catch {
-        cachedUrl.value = url
+        // only fall back to the raw URL if the source hasn't changed underneath us
+        if (currentToken === token) cachedUrl.value = url
       }
 
       warmMediaCache(url).catch(() => {})

web/canvas-app/src/stores/projects.js

@@ -215,7 +215,12 @@ const cleanNodeForStorage = (node) => {
     // For uploaded images, we can't persist them in localStorage | 上传的图片无法持久化到 localStorage
     delete cleanedData.url
   }
-  
+
+  // blob: object URLs are session-only and break on reload — never persist them | blob: 仅会话内有效，重载即失效，不持久化
+  if (cleanedData.url?.startsWith?.('blob:')) {
+    delete cleanedData.url
+  }
+
   // Remove mask data | 移除蒙版数据
   if (cleanedData.maskData) {
     delete cleanedData.maskData

web/canvas-app/src/utils/request.js

@@ -9,7 +9,10 @@ import axios from 'axios'
 // Create axios instance | 创建 axios 实例
 const instance = axios.create({
   baseURL: "/api",
-  timeout: 30000000
+  // 60s default (the old 30000000ms ≈ 8.3h was effectively no timeout, so a hung
+  // request would never abort). Send the auth cookie for cross-origin API bases.
+  timeout: 60000,
+  withCredentials: true
 })
 
 // Request interceptor | 请求拦截器