更新依赖，优化认证流程；添加聊天框动画效果，优化消息处理逻辑

src/lib/apiFetch.ts

@@ -15,9 +15,13 @@ const resolveUrl = (input: RequestInfo | URL) => {
 const isMetaProjectsRequest = (input: RequestInfo | URL) =>
   resolveUrl(input).includes("/api/v1/meta/projects");
 
+export interface ApiFetchInit extends RequestInit {
+  skipAuthRedirect?: boolean;
+}
+
 export const apiFetch = async (
   input: RequestInfo | URL,
-  init: RequestInit = {},
+  init: ApiFetchInit = {},
 ) => {
   const projectId = useProjectStore.getState().currentProjectId;
   const headers = new Headers(init.headers ?? {});
@@ -31,7 +35,7 @@ export const apiFetch = async (
 
   const response = await fetch(input, { ...init, headers });
 
-  if (response.status === 401 && typeof window !== "undefined") {
+  if (response.status === 401 && typeof window !== "undefined" && !init.skipAuthRedirect) {
     useAuthStore.getState().setAccessToken(null);
     if (!isSigningOut) {
       isSigningOut = true;

src/lib/chatStream.test.ts

@@ -78,4 +78,23 @@ describe("streamCopilotChat", () => {
       { type: "error", message: "stream request failed", detail: "bad request" },
     ]);
   });
+
+  it("emits re-login message on unauthorized response", async () => {
+    apiFetch.mockResolvedValue({
+      ok: false,
+      status: 401,
+      body: null,
+      text: async () => "unauthorized",
+    });
+
+    const events: Array<{ type: string; message?: string; detail?: string }> = [];
+    await streamCopilotChat({
+      message: "hi",
+      onEvent: (event) => events.push(event),
+    });
+
+    expect(events).toEqual([
+      { type: "error", message: "Login expired. Please sign in again.", detail: undefined },
+    ]);
+  });
 });

src/lib/chatStream.ts

@@ -49,14 +49,23 @@ export const streamCopilotChat = async ({
       message,
       conversation_id: conversationId,
     }),
+    skipAuthRedirect: true,
   });
 
   if (!response.ok || !response.body) {
     const detail = await response.text();
+    let message = "stream request failed";
+    
+    if (response.status === 403) {
+      message = "Permission denied. Please contact administrator.";
+    } else if (response.status === 401) {
+      message = "Login expired. Please sign in again.";
+    }
+    
     onEvent({
       type: "error",
-      message: "stream request failed",
-      detail,
+      message,
+      detail: (response.status === 403 || response.status === 401) ? undefined : detail,
     });
     return;
   }