tweak(video): 视频渲染预算拉到 30 分钟

backend/internal/provider/custom/client.go

@@ -55,7 +55,7 @@ func sanitizeErr(err error) string {
 	return "upstream request failed"
 }
 
-func httpClient() *http.Client { return &http.Client{Timeout: 20 * time.Minute} }
+func httpClient() *http.Client { return &http.Client{Timeout: 30 * time.Minute} }
 
 // GenerateImage calls the upstream OpenAI image API. With reference images it
 // uses /v1/images/edits (multipart); otherwise /v1/images/generations. Returns

backend/internal/provider/grok/console.go

@@ -46,7 +46,7 @@ const (
 	consoleMaxEditImages = 3
 
 	consoleVideoPollEvery = 2 * time.Second
-	consoleVideoDeadline  = 20 * time.Minute
+	consoleVideoDeadline  = 30 * time.Minute
 )
 
 // consoleSession is one minted DPoP token plus the key it is bound to. skew is

backend/internal/provider/grok/video.go

@@ -291,7 +291,7 @@ func (c *Client) createPost(ctx context.Context, client tlsclient.HttpClient, to
 // assets.grok.com is not anti-bot gated) until grok finishes rendering it.
 // 404 means "still rendering"; auth failures abort.
 func (c *Client) waitForAsset(ctx context.Context, client tlsclient.HttpClient, token, url string) error {
-	deadline := time.Now().Add(20 * time.Minute)
+	deadline := time.Now().Add(30 * time.Minute)
 	for {
 		if err := ctx.Err(); err != nil {
 			return err

backend/internal/service/v1.go

@@ -1506,8 +1506,8 @@ func (s *V1Service) finishUnimplementedEvent(ctx context.Context, eventID string
 }
 
 // videoGenBudget caps one video render end-to-end (submit + poll + download).
-// 上游慢的时候（seedance 长镜头）12 分钟不够，统一给 20 分钟。
-const videoGenBudget = 20 * time.Minute
+// 上游慢的时候（seedance 长镜头）12 分钟不够，统一给 30 分钟。
+const videoGenBudget = 30 * time.Minute
 
 // grokConcurrencyPerAccount is how many simultaneous generations one grok account
 // may run (grok tolerates 10, unlike the 1-per-account default elsewhere).