feat: add `getUrlStatusForMyLibrary` method to ApiClient

Co-authored-by: aider (anthropic/claude-sonnet-4-20250514) <[e-mail]>

src/webapp/api-client/ApiClient.ts

···
   GetUrlCardsResponse,
   GetProfileResponse,
   GetProfileParams,
+  GetUrlStatusForMyLibraryParams,
+  GetUrlStatusForMyLibraryResponse,
 } from './types';
 
 // Main API Client class using composition
···
     params: GetCollectionsParams,
   ): Promise<GetCollectionsResponse> {
     return this.queryClient.getUserCollections(params);
+  }
+
+  async getUrlStatusForMyLibrary(
+    params: GetUrlStatusForMyLibraryParams,
+  ): Promise<GetUrlStatusForMyLibraryResponse> {
+    this.requireAuthentication('getUrlStatusForMyLibrary');
+    return this.queryClient.getUrlStatusForMyLibrary(params);
   }
 
   // Card operations - delegate to CardClient (all require authentication)

src/webapp/api-client/clients/QueryClient.ts

···
   GetProfileResponse,
   GetCollectionPageResponse,
   GetCollectionsResponse,
+  GetUrlStatusForMyLibraryResponse,
   GetMyUrlCardsParams,
   GetUrlCardsParams,
   GetCollectionPageParams,
···
   GetCollectionsParams,
   GetCollectionPageByAtUriParams,
   GetProfileParams,
+  GetUrlStatusForMyLibraryParams,
 } from '../types';
 
 export class QueryClient extends BaseClient {
···
       : `/api/collections/user/${params.identifier}`;
 
     return this.request<GetCollectionsResponse>('GET', endpoint);
+  }
+
+  async getUrlStatusForMyLibrary(
+    params: GetUrlStatusForMyLibraryParams,
+  ): Promise<GetUrlStatusForMyLibraryResponse> {
+    const searchParams = new URLSearchParams({ url: params.url });
+    return this.request<GetUrlStatusForMyLibraryResponse>(
+      'GET',
+      `/api/cards/library/status?${searchParams}`,
+    );
   }
 }

src/webapp/api-client/types/requests.ts

···
 export interface GetProfileParams {
   identifier: string; // Can be DID or handle
 }
+
+export interface GetUrlStatusForMyLibraryParams {
+  url: string;
+}

src/webapp/api-client/types/responses.ts

···
     nextCursor?: string;
   };
 }
+
+export interface GetUrlStatusForMyLibraryResponse {
+  cardId?: string;
+  collections?: {
+    id: string;
+    uri?: string;
+    name: string;
+    description?: string;
+  }[];
+}