fix chat pending drop when title model fails and filter auto-title vision model

app/(chat)/actions.ts

@@ -23,19 +23,28 @@ export async function generateTitleFromUserMessage({
 }: {
   message: UIMessage;
 }) {
-  // 优先使用数据库配置的模型，回退到预定义模型
-  let model = await getSystemModel("title");
-  if (!model) {
-    model = myProvider.languageModel("title-model");
+  const prompt = (getTextFromMessage(message) || "").trim();
+  const fallbackTitle = prompt.slice(0, 20) || "新对话";
+
+  try {
+    // 优先使用数据库配置的模型，回退到预定义模型
+    let model = await getSystemModel("title");
+    if (!model) {
+      model = myProvider.languageModel("title-model");
+    }
+
+    const { text: title } = await generateText({
+      model,
+      system: titlePrompt,
+      prompt,
+    });
+
+    const normalized = (title || "").trim();
+    return normalized || fallbackTitle;
+  } catch (error) {
+    console.warn("[generateTitleFromUserMessage] fallback title:", error);
+    return fallbackTitle;
   }
-
-  const { text: title } = await generateText({
-    model,
-    system: titlePrompt,
-    prompt: getTextFromMessage(message),
-  });
-
-  return title;
 }
 
 export async function deleteTrailingMessages({ id }: { id: string }) {

app/api/canvas/auto-title/route.ts

@@ -21,15 +21,27 @@ export async function POST(request: NextRequest) {
       return NextResponse.json({ error: "Image URL is required" }, { status: 400 });
     }
 
+    const blockedProviderTypes = new Set([
+      "fal-video",
+      "qianwen-video",
+      "volcano-video",
+      "doubao-video",
+    ]);
+
     // 从数据库获取支持视觉的模型（优先使用 supportsVision）
     const modelsData = await getEnabledAiModelsWithProvider();
     console.log("[Auto-title] Available models count:", modelsData.length);
     console.log("[Auto-title] All model IDs:", modelsData.map(m => m.model.modelId));
     
-    let visionModelData = modelsData.find(m => m.model.supportsVision);
+    let visionModelData = modelsData.find(
+      (m) => m.model.supportsVision && !blockedProviderTypes.has(String(m.provider?.type || "")),
+    );
     if (!visionModelData) {
       // 兼容旧配置：根据模型名称兜底匹配
       visionModelData = modelsData.find(m => {
+        if (blockedProviderTypes.has(String(m.provider?.type || ""))) {
+          return false;
+        }
         const id = m.model.modelId?.toLowerCase() || '';
         const name = m.model.displayName?.toLowerCase() || '';
         return id.includes('qwen-vl') ||