fix: stabilize agent project startup

app/api/messages/route.ts

@@ -25,6 +25,30 @@ export const revalidate = 0;
 const FAL_IMAGE_TASK_POLL_INTERVAL_MS = 2_000;
 const falTaskLastPolledAt = new Map<string, number>();
 const falTaskSyncInFlight = new Set<string>();
+const AGENT_MODE_SCOPED_CHAT_SUFFIX = "a93e17a60001";
+
+function isAgentModeScopedChatId(chatId: string) {
+  const normalized = String(chatId || "")
+    .trim()
+    .toLowerCase()
+    .replace(/-/g, "");
+
+  return (
+    /^[0-9a-f]{32}$/.test(normalized) &&
+    normalized.endsWith(AGENT_MODE_SCOPED_CHAT_SUFFIX)
+  );
+}
+
+function createEmptyMessagesResponse() {
+  return NextResponse.json(
+    { messages: [] },
+    {
+      headers: {
+        "Cache-Control": "no-store, max-age=0",
+      },
+    }
+  );
+}
 
 async function markFalTaskFailed(params: {
   message: DBMessage;
@@ -212,7 +236,15 @@ export async function GET(request: NextRequest) {
     }
 
     const selectedChat = await getChatById({ id: chatId });
-    if (!selectedChat || selectedChat.userId !== session.user.id) {
+    if (!selectedChat) {
+      if (isAgentModeScopedChatId(chatId)) {
+        return createEmptyMessagesResponse();
+      }
+
+      return NextResponse.json({ error: "Forbidden" }, { status: 403 });
+    }
+
+    if (selectedChat.userId !== session.user.id) {
       return NextResponse.json({ error: "Forbidden" }, { status: 403 });
     }
 

app/canvas/[id]/CanvasEditorLegacyPageClient.tsx

@@ -967,38 +967,6 @@ function normalizeImportedCanvasState(payload: unknown): {
   };
 }
 
-function hasMeaningfulWorkflowState(
-  workflowState: AgentWorkflowPersistedState | null | undefined
-) {
-  if (!workflowState) return false;
-
-  const inputs = workflowState.inputs;
-  const hasInputs = Boolean(
-    String(inputs?.primarySku || "").trim() ||
-      String(inputs?.secondarySku || "").trim() ||
-      String(inputs?.brand || "").trim() ||
-      String(inputs?.store || "").trim() ||
-      String(inputs?.officialSecondCategory || "").trim() ||
-      String(inputs?.officialThirdCategory || "").trim() ||
-      String(inputs?.thirdCategory || "").trim() ||
-      String(inputs?.fourthCategory || "").trim() ||
-      String(inputs?.fifthCategory || "").trim() ||
-      String(inputs?.priceBand || "").trim()
-  );
-
-  const hasSelections = Object.values(workflowState.selections || {}).some(
-    (value) => Boolean(String(value || "").trim())
-  );
-  const hasBrandModel = Boolean(
-    String(workflowState.selectedBrandModel?.imageUrl || "").trim()
-  );
-  const hasPreset = Boolean(
-    String(workflowState.selectedAgentPresetId || "").trim()
-  );
-
-  return hasInputs || hasSelections || hasBrandModel || hasPreset;
-}
-
 const FLOATING_PANEL_WIDTH = 460;
 const FLOATING_PANEL_INSET = 16;
 const DOCKED_PANEL_INSET = 0;
@@ -1712,12 +1680,14 @@ export default function CanvasEditorLegacyPage({ params }: PageProps) {
         const hasClientPoint =
           typeof anchorPoint?.clientX === "number" &&
           typeof anchorPoint?.clientY === "number";
+        const clientX = hasClientPoint ? anchorPoint.clientX : null;
+        const clientY = hasClientPoint ? anchorPoint.clientY : null;
 
         anchorX = hasClientPoint
-          ? Math.min(Math.max(anchorPoint.clientX - rect.left, 0), rect.width)
+          ? Math.min(Math.max((clientX ?? 0) - rect.left, 0), rect.width)
           : rect.width / 2;
         anchorY = hasClientPoint
-          ? Math.min(Math.max(anchorPoint.clientY - rect.top, 0), rect.height)
+          ? Math.min(Math.max((clientY ?? 0) - rect.top, 0), rect.height)
           : rect.height / 2;
       }
 
@@ -2895,14 +2865,6 @@ export default function CanvasEditorLegacyPage({ params }: PageProps) {
       workflowMaterials,
       sanitizedWorkflowSelections,
     ]);
-  const currentWorkflowPersistedStateRef = useRef<AgentWorkflowPersistedState>(
-    buildCurrentWorkflowPersistedState()
-  );
-
-  useEffect(() => {
-    currentWorkflowPersistedStateRef.current =
-      buildCurrentWorkflowPersistedState();
-  }, [buildCurrentWorkflowPersistedState]);
 
   useEffect(() => {
     void checkCanvasAuthSession();
@@ -2936,15 +2898,11 @@ export default function CanvasEditorLegacyPage({ params }: PageProps) {
     console.log("[Canvas] Loading project:", id);
 
     const loadProject = async () => {
-      const preservedWorkflowState = currentWorkflowPersistedStateRef.current;
-      const shouldPreserveCurrentWorkflowState =
-        requestedAgentMode &&
-        lastLoadedCanvasIdRef.current === id &&
-        hasMeaningfulWorkflowState(preservedWorkflowState);
-
       setIsLoading(true);
-      setWorkflowHydrationSource("pending");
+      if (!requestedAgentMode) {
-      if (!shouldPreserveCurrentWorkflowState) {
+        setWorkflowHydrationSource("pending");
+      }
+      if (!requestedAgentMode) {
         setWorkflowInputs({
           primarySku: "",
           secondarySku: "",
@@ -2962,13 +2920,15 @@ export default function CanvasEditorLegacyPage({ params }: PageProps) {
         setSelectedBrandModel(null);
         setSelectedAgentPresetId(null);
       }
-      setAgentModeState(createEmptyAgentModeWorkspaceState());
+      if (!requestedAgentMode) {
-      setAgentWorkspaceState(createEmptyAgentGenerationProjectWorkspaceState());
+        setAgentModeState(createEmptyAgentModeWorkspaceState());
-      setAgentProjectTitle("未命名生图项目");
+        setAgentWorkspaceState(createEmptyAgentGenerationProjectWorkspaceState());
-      setAgentProjectThumbnail(null);
+        setAgentProjectTitle("未命名生图项目");
-      setAgentProjectResultCollections({});
+        setAgentProjectThumbnail(null);
-      setAgentProjectDeletedResultCollections({});
+        setAgentProjectResultCollections({});
-      setLoadedAgentProjectId(null);
+        setAgentProjectDeletedResultCollections({});
+        setLoadedAgentProjectId(null);
+      }
 
       // 🆕 先清空当前画布状态，确保切换时不会显示旧数据
       useCanvasStore.getState().clearCanvas();
@@ -3077,8 +3037,6 @@ export default function CanvasEditorLegacyPage({ params }: PageProps) {
               normalizeAgentModeWorkspaceState(persistedWorkflow.agentModeState)
             );
             setWorkflowHydrationSource("project");
-          } else if (requestedAgentMode && shouldPreserveCurrentWorkflowState) {
-            setWorkflowHydrationSource("project");
           } else {
             setWorkflowHydrationSource("empty");
           }
@@ -3995,32 +3953,42 @@ export default function CanvasEditorLegacyPage({ params }: PageProps) {
   }, [agentProjectId, agentProjectTitle, handleRenameAgentProject]);
 
   const handleCreateAgentProject = useCallback(async () => {
-    if (agentProjectId) {
+    if (isAgentProjectSaving) {
-      await persistAgentProject("switch");
-    }
-
-    const result = await agentProjectService.createProject({
-      title: buildDefaultAgentProjectTitle(),
-      projectState: createEmptyAgentGenerationProjectPersistedState(),
-    });
-    if (!result.success || !result.data) {
-      if (isUnauthorizedApiError(result.error)) {
-        setIsAuthenticated(false);
-        openLoginDialog(
-          result.error || "当前登录状态已失效，请重新登录后继续操作。"
-        );
-      }
-      toast.error(result.error || "创建生图项目失败");
       return;
     }
 
-    toast.success("已新建空白项目");
+    setIsAgentProjectSaving(true);
-    updateCanvasSearchParams({
+    try {
-      mode: "agent",
+      if (agentProjectId) {
-      agentProjectId: result.data.id,
+        await persistAgentProject("switch");
-    });
+      }
+
+      const result = await agentProjectService.createProject({
+        title: buildDefaultAgentProjectTitle(),
+        projectState: createEmptyAgentGenerationProjectPersistedState(),
+      });
+      if (!result.success || !result.data) {
+        if (isUnauthorizedApiError(result.error)) {
+          setIsAuthenticated(false);
+          openLoginDialog(
+            result.error || "当前登录状态已失效，请重新登录后继续操作。"
+          );
+        }
+        toast.error(result.error || "创建生图项目失败");
+        return;
+      }
+
+      toast.success("已新建空白项目");
+      updateCanvasSearchParams({
+        mode: "agent",
+        agentProjectId: result.data.id,
+      });
+    } finally {
+      setIsAgentProjectSaving(false);
+    }
   }, [
     agentProjectId,
+    isAgentProjectSaving,
     openLoginDialog,
     persistAgentProject,
     updateCanvasSearchParams,
@@ -9034,14 +9002,21 @@ export default function CanvasEditorLegacyPage({ params }: PageProps) {
 
               <button
                 className="rounded-[28px] border border-emerald-400/20 bg-emerald-500/[0.10] p-5 text-left transition-colors hover:border-emerald-300/35 hover:bg-emerald-500/[0.16]"
+                disabled={isAgentProjectSaving}
                 onClick={() => {
                   void handleCreateAgentProject();
                 }}
                 type="button"
               >
                 <div className="flex items-center gap-3 text-emerald-100">
-                  <Plus className="h-5 w-5" />
+                  {isAgentProjectSaving ? (
-                  <span className="font-medium text-sm">新建空白项目</span>
+                    <Loader2 className="h-5 w-5 animate-spin" />
+                  ) : (
+                    <Plus className="h-5 w-5" />
+                  )}
+                  <span className="font-medium text-sm">
+                    {isAgentProjectSaving ? "正在新建项目" : "新建空白项目"}
+                  </span>
                 </div>
                 <div className="mt-3 text-emerald-50/70 text-sm leading-6">
                   仅在你要开始一条全新的场景生图流程时再创建，避免项目列表里自动冒出一堆无效项目。

lib/agents/workflow-ui-config.ts

@@ -1929,6 +1929,13 @@ export function sanitizeAgentWorkflowSelections(params: {
   config?: AgentWorkflowUiConfig | null;
   selections: Partial<Record<AgentWorkflowStepKey, string>>;
 }) {
+  const hasSelection = Object.values(params.selections || {}).some((value) =>
+    Boolean(String(value || "").trim())
+  );
+  if (!hasSelection) {
+    return {};
+  }
+
   const config = params.config || defaultAgentWorkflowUiConfig;
   const enabledSteps = flattenAgentWorkflowSteps(
     getEnabledAgentWorkflowStepTree(Array.isArray(config.steps) ? config.steps : [])
@@ -2089,6 +2096,13 @@ export function getAgentWorkflowBlockedOptionKeysForSelections(params: {
   config?: AgentWorkflowUiConfig | null;
   selections: Partial<Record<AgentWorkflowStepKey, string>>;
 }) {
+  const hasSelection = Object.values(params.selections || {}).some((value) =>
+    Boolean(String(value || "").trim())
+  );
+  if (!hasSelection) {
+    return [];
+  }
+
   const config = params.config || defaultAgentWorkflowUiConfig;
   const constraintSettings = getAgentWorkflowConstraintSettings(config);
   const visibleSteps = flattenVisibleAgentWorkflowSteps(

services/agent-projects/index.ts

@@ -9,22 +9,65 @@ interface ApiResponse<T = unknown> {
   error?: string;
 }
 
+const AGENT_PROJECT_REQUEST_TIMEOUT_MS = 15_000;
+
+async function fetchAgentProjectApi<T>(
+  input: RequestInfo | URL,
+  init?: RequestInit
+): Promise<ApiResponse<T>> {
+  const controller = new AbortController();
+  const timeoutId = globalThis.setTimeout(
+    () => controller.abort(),
+    AGENT_PROJECT_REQUEST_TIMEOUT_MS
+  );
+
+  try {
+    const response = await fetch(input, {
+      ...init,
+      signal: controller.signal,
+    });
+    return await response.json();
+  } finally {
+    globalThis.clearTimeout(timeoutId);
+  }
+}
+
+function getAgentProjectRequestErrorMessage(error: unknown, fallback: string) {
+  if (error instanceof DOMException && error.name === "AbortError") {
+    return `${fallback}：请求超时`;
+  }
+  return fallback;
+}
+
 export const agentProjectService = {
   async getProjects(): Promise<ApiResponse<AgentGenerationProject[]>> {
     try {
-      const response = await fetch("/api/agent-projects", { cache: "no-store" });
+      return await fetchAgentProjectApi<AgentGenerationProject[]>(
-      return await response.json();
+        "/api/agent-projects",
-    } catch {
+        { cache: "no-store" }
-      return { success: false, error: "获取生图项目列表失败" };
+      );
+    } catch (error) {
+      return {
+        success: false,
+        error: getAgentProjectRequestErrorMessage(
+          error,
+          "获取生图项目列表失败"
+        ),
+      };
     }
   },
 
   async getProject(id: string): Promise<ApiResponse<AgentGenerationProject>> {
     try {
-      const response = await fetch(`/api/agent-projects/${id}`, { cache: "no-store" });
+      return await fetchAgentProjectApi<AgentGenerationProject>(
-      return await response.json();
+        `/api/agent-projects/${id}`,
-    } catch {
+        { cache: "no-store" }
-      return { success: false, error: "获取生图项目失败" };
+      );
+    } catch (error) {
+      return {
+        success: false,
+        error: getAgentProjectRequestErrorMessage(error, "获取生图项目失败"),
+      };
     }
   },
 
@@ -35,14 +78,19 @@ export const agentProjectService = {
     projectState?: AgentGenerationProjectPersistedState;
   }): Promise<ApiResponse<AgentGenerationProject>> {
     try {
-      const response = await fetch("/api/agent-projects", {
+      return await fetchAgentProjectApi<AgentGenerationProject>(
-        method: "POST",
+        "/api/agent-projects",
-        headers: { "Content-Type": "application/json" },
+        {
-        body: JSON.stringify(payload),
+          method: "POST",
-      });
+          headers: { "Content-Type": "application/json" },
-      return await response.json();
+          body: JSON.stringify(payload),
-    } catch {
+        }
-      return { success: false, error: "创建生图项目失败" };
+      );
+    } catch (error) {
+      return {
+        success: false,
+        error: getAgentProjectRequestErrorMessage(error, "创建生图项目失败"),
+      };
     }
   },
 
@@ -56,25 +104,32 @@ export const agentProjectService = {
     }
   ): Promise<ApiResponse<AgentGenerationProject>> {
     try {
-      const response = await fetch(`/api/agent-projects/${id}`, {
+      return await fetchAgentProjectApi<AgentGenerationProject>(
-        method: "PUT",
+        `/api/agent-projects/${id}`,
-        headers: { "Content-Type": "application/json" },
+        {
-        body: JSON.stringify(payload),
+          method: "PUT",
-      });
+          headers: { "Content-Type": "application/json" },
-      return await response.json();
+          body: JSON.stringify(payload),
-    } catch {
+        }
-      return { success: false, error: "保存生图项目失败" };
+      );
+    } catch (error) {
+      return {
+        success: false,
+        error: getAgentProjectRequestErrorMessage(error, "保存生图项目失败"),
+      };
     }
   },
 
   async deleteProject(id: string): Promise<ApiResponse> {
     try {
-      const response = await fetch(`/api/agent-projects/${id}`, {
+      return await fetchAgentProjectApi(`/api/agent-projects/${id}`, {
         method: "DELETE",
       });
-      return await response.json();
+    } catch (error) {
-    } catch {
+      return {
-      return { success: false, error: "删除生图项目失败" };
+        success: false,
+        error: getAgentProjectRequestErrorMessage(error, "删除生图项目失败"),
+      };
     }
   },
 };