feat: add user management components including header, loading states, and table with pagination

src/lib/api/services/admin.ts

@@ -23,6 +23,23 @@ export interface MessageResponse {
   message: string
 }
 
+export interface GetUsersParams {
+  page?: number
+  limit?: number
+  search?: string
+  sort_by?: string
+  sort_order?: string
+  status_filter?: string
+}
+
+export interface GetUsersResponse {
+  users: User[]
+  total: number
+  page: number
+  limit: number
+  total_pages: number
+}
+
 export interface ScanResults {
   added: number
   updated: number
@@ -54,10 +71,32 @@ export interface NormalizationResponse {
 }
 
 export class AdminService {
-  async listUsers(limit = 100, offset = 0): Promise<User[]> {
-    return apiClient.get<User[]>(`/api/v1/admin/users/`, {
-      params: { limit, offset },
-    })
+  async listUsers(params?: GetUsersParams): Promise<GetUsersResponse> {
+    const searchParams = new URLSearchParams()
+    
+    if (params?.page) {
+      searchParams.append('page', params.page.toString())
+    }
+    if (params?.limit) {
+      searchParams.append('limit', params.limit.toString())
+    }
+    if (params?.search) {
+      searchParams.append('search', params.search)
+    }
+    if (params?.sort_by) {
+      searchParams.append('sort_by', params.sort_by)
+    }
+    if (params?.sort_order) {
+      searchParams.append('sort_order', params.sort_order)
+    }
+    if (params?.status_filter) {
+      searchParams.append('status_filter', params.status_filter)
+    }
+    
+    const url = searchParams.toString()
+      ? `/api/v1/admin/users/?${searchParams.toString()}`
+      : '/api/v1/admin/users/'
+    return apiClient.get<GetUsersResponse>(url)
   }
 
   async getUser(userId: number): Promise<User> {