修复chatgpt

backend/internal/provider/chatgpt/util.go

@@ -18,12 +18,13 @@ const (
 	defaultClientVersion     = "prod-db390ebea64862bf1899c420a4c736e0cf639747"
 	defaultClientBuildNumber = "7904904"
 	defaultPOWScript         = "https://chatgpt.com/backend-api/sentinel/sdk.js"
-	// sseAsyncGrace bounds how long startImageGeneration keeps reading the SSE
-	// waiting for the image_gen_async marker after the conversation id is known.
-	// The marker normally arrives within ~1s; when it never streams (intermittent
-	// on gpt-5-5-thinking) we must not hold the stream open for the whole ctx
-	// budget, so we break after this grace and fall through to polling.
-	sseAsyncGrace = 10 * time.Second
+	// sseIdleGrace bounds how long startImageGeneration keeps reading the image
+	// SSE with no activity at all before giving up. ChatGPT's inline image pipeline
+	// holds the stream open with periodic ": ping" keepalives (~15s apart) while
+	// the image renders, so this is an *idle* timeout reset on every received line
+	// (see the watchdog in startImageGeneration): it only fires when the stream is
+	// genuinely silent, not on the normal render wait.
+	sseIdleGrace = 45 * time.Second
 
 	// pictureV2Command is the "@创建图片" ecosystem mention the ChatGPT web app
 	// prepends to an image (picture_v2) prompt; the server identifies the image
@@ -56,7 +57,7 @@ var (
 	// async image pipeline (image is delivered later via conversation polling
 	// rather than inline in the SSE stream). Their presence means "generating —
 	// keep polling", NOT failure.
-	asyncMarkers = []string{"image_gen_async", "image_gen_task_id", "trigger_async_ux"}
+	asyncMarkers = []string{"image_gen_async", "image_gen_task_id", "trigger_async_ux", "ImageGenToolTemporal", "image_gen_title"}
 
 	// contentPolicyMarkers are stable substrings of ChatGPT's content-audit
 	// refusal message. When one appears in an assistant turn the prompt was