fix: align agent avatar with auto image model setting

app/(chat)/api/models/route.ts

@@ -3,6 +3,7 @@ import {
   getAgentAiModelWithProvider,
   getDefaultAiModel,
   getEnabledAiModelsWithProvider,
+  getSiteSettings,
 } from "@/lib/db/queries";
 import { ChatSDKError } from "@/lib/errors";
 import { isAiModelAgentAuto } from "@/lib/db/ai-model-flags";
@@ -33,6 +34,7 @@ export async function GET() {
     const modelsWithProvider = await getEnabledAiModelsWithProvider(false);
     const agentModelWithProvider = await getAgentAiModelWithProvider();
     const defaultModel = await getDefaultAiModel();
+    const siteSettings = await getSiteSettings();
     const visibleModelsWithProvider = sortModelsForDisplay(
       modelsWithProvider
         .filter(({ model }) => !isAiModelAgentAuto(model))
@@ -66,6 +68,32 @@ export async function GET() {
       sortOrder: model.sortOrder ?? 0,
     }));
 
+    // Agent 模式在前端展示头像/参数时，优先使用“Agent模式 - 默认生图模型”的配置
+    // 避免展示成分析模型（如视觉模型）的头像，导致与管理员设置不一致
+    const imageGenModelsWithProvider = visibleModelsWithProviderSorted.filter(
+      ({ model }) => model.supportsImageGen
+    );
+    const configuredAutoImageModelId =
+      typeof siteSettings?.canvasAutoModeDefaultModelId === "string"
+        ? siteSettings.canvasAutoModeDefaultModelId.trim()
+        : "";
+    const configuredAutoImageModel = configuredAutoImageModelId
+      ? imageGenModelsWithProvider.find(
+          ({ model }) => model.id === configuredAutoImageModelId
+        )
+      : undefined;
+    const defaultImageGenModel =
+      (defaultModel &&
+      !isAiModelAgentAuto(defaultModel) &&
+      defaultModel.supportsImageGen
+        ? imageGenModelsWithProvider.find(({ model }) => model.id === defaultModel.id)
+        : undefined) || imageGenModelsWithProvider[0];
+    const agentDisplayModelWithProvider =
+      configuredAutoImageModel ||
+      defaultImageGenModel ||
+      agentModelWithProvider ||
+      null;
+
     const resolvedDefaultModelId =
       (defaultModel &&
       !isAiModelAgentAuto(defaultModel) &&
@@ -78,13 +106,13 @@ export async function GET() {
     return Response.json({
       models,
       defaultModelId: resolvedDefaultModelId,
-      agentModel: agentModelWithProvider
+      agentModel: agentDisplayModelWithProvider
         ? {
-            id: agentModelWithProvider.model.id,
-            displayName: agentModelWithProvider.model.displayName,
-            avatarUrl: agentModelWithProvider.model.avatarUrl,
-            providerType: agentModelWithProvider.provider.type,
-            imageGenConfig: agentModelWithProvider.model.imageGenConfig,
+            id: agentDisplayModelWithProvider.model.id,
+            displayName: agentDisplayModelWithProvider.model.displayName,
+            avatarUrl: agentDisplayModelWithProvider.model.avatarUrl,
+            providerType: agentDisplayModelWithProvider.provider.type,
+            imageGenConfig: agentDisplayModelWithProvider.model.imageGenConfig,
           }
         : null,
     });