feat: saved_views backend API + model + migration + frontend hooks

frontend/src/api/savedViews.ts

@@ -0,0 +1,52 @@
+/**
+ * Saved Views API hooks — CRUD for reusable view configurations.
+ */
+
+import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
+import { apiGet, apiPost, apiPut, apiDelete } from './client';
+
+export interface SavedView {
+  id: string;
+  name: string;
+  entity_type: string;
+  view_config: Record<string, any>;
+  user_id: string;
+  created_at?: string;
+  updated_at?: string;
+}
+
+export function useSavedViews(entityType?: string) {
+  const params = new URLSearchParams();
+  if (entityType) params.set('entity_type', entityType);
+  const qs = params.toString() ? `?${params.toString()}` : '';
+  return useQuery({
+    queryKey: ['saved-views', entityType],
+    queryFn: () => apiGet<SavedView[]>(`/saved-views${qs}`),
+  });
+}
+
+export function useCreateSavedView() {
+  const qc = useQueryClient();
+  return useMutation({
+    mutationFn: (data: { name: string; entity_type: string; view_config: Record<string, any> }) =>
+      apiPost<SavedView>('/saved-views', data),
+    onSuccess: () => qc.invalidateQueries({ queryKey: ['saved-views'] }),
+  });
+}
+
+export function useUpdateSavedView() {
+  const qc = useQueryClient();
+  return useMutation({
+    mutationFn: ({ id, data }: { id: string; data: { name?: string; view_config?: Record<string, any> } }) =>
+      apiPut<SavedView>(`/saved-views/${id}`, data),
+    onSuccess: () => qc.invalidateQueries({ queryKey: ['saved-views'] }),
+  });
+}
+
+export function useDeleteSavedView() {
+  const qc = useQueryClient();
+  return useMutation({
+    mutationFn: (id: string) => apiDelete(`/saved-views/${id}`),
+    onSuccess: () => qc.invalidateQueries({ queryKey: ['saved-views'] }),
+  });
+}