R61 A1-A6：Auth token refresh 主动续期

client/src/api/http.ts

@@ -1,4 +1,4 @@
-import { ApiError, type ApiErrorBody, type ApiSuccess } from "./types";
+import { ApiError, SessionExpiredError, type ApiErrorBody, type ApiSuccess } from "./types";
 
 type AccessTokenGetter = () => string | null;
 type RefreshAccessToken = () => Promise<string | null>;
@@ -79,6 +79,13 @@ async function getRefreshedToken(): Promise<string | null> {
   return refreshPromise;
 }
 
+function throwSessionExpired(): never {
+  if (clearSession) {
+    clearSession();
+  }
+  throw new SessionExpiredError();
+}
+
 async function sendRequest<T>(
   path: string,
   options: ApiRequestOptions,
@@ -118,9 +125,7 @@ async function sendRequest<T>(
       });
     }
 
-    if (clearSession) {
-      clearSession();
-    }
+    throwSessionExpired();
   }
 
   const payload = await safeParseJson(response);
@@ -210,9 +215,7 @@ export async function apiRequestBlob(
       });
     }
 
-    if (clearSession) {
-      clearSession();
-    }
+    throwSessionExpired();
   }
 
   const payload = await safeParseJson(response);