修复数据库错误，重新注入示例数据

frontend/src/api/dashboard.ts

@@ -8,12 +8,12 @@ export const fetchFinanceSummary = (studyId: string) =>
   apiGet(`/api/v1/studies/${studyId}/finance/summary`);
 
 export const fetchOverdueAesCount = (studyId: string) =>
-  apiGet<ApiListResponse<any>>(`/api/v1/studies/${studyId}/aes`, { params: { overdue: true, limit: 1 } });
+  apiGet<ApiListResponse<any>>(`/api/v1/studies/${studyId}/aes/`, { params: { overdue: true, limit: 1 } });
 
 export const fetchOverdueQueriesCount = (studyId: string) =>
-  apiGet<ApiListResponse<any>>(`/api/v1/studies/${studyId}/data-queries`, { params: { overdue: true, limit: 1 } });
+  apiGet<ApiListResponse<any>>(`/api/v1/studies/${studyId}/data-queries/`, { params: { overdue: true, limit: 1 } });
 
 export const fetchMyTodoTasks = (studyId: string, assigneeId: string) =>
-  apiGet<ApiListResponse<any>>(`/api/v1/studies/${studyId}/tasks`, {
+  apiGet<ApiListResponse<any>>(`/api/v1/studies/${studyId}/tasks/`, {
     params: { assignee_id: assigneeId, status: "TODO" },
   });

frontend/src/api/studies.ts

@@ -1,4 +1,5 @@
 import { apiGet } from "./axios";
 import type { ApiListResponse, Study } from "../types/api";
 
-export const fetchStudies = () => apiGet<ApiListResponse<Study>>("/api/v1/studies");
+// Backend expects trailing slash to avoid 307 redirect
+export const fetchStudies = () => apiGet<ApiListResponse<Study>>("/api/v1/studies/");

pg_data.bak.1765940645/PG_VERSION

@@ -0,0 +1 @@
+15