refactor: pass EnvironmentConfigService as shared service and update collection string injection

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

src/shared/infrastructure/http/factories/ServiceFactory.ts

···
   feedService: FeedService;
   nodeOauthClient: NodeOAuthClient;
   identityResolutionService: IIdentityResolutionService;
+  configService: EnvironmentConfigService;
 }
 
 // Web app specific services (includes publishers, auth middleware)
···
   cardCollectionService: CardCollectionService;
   authMiddleware: AuthMiddleware;
   eventPublisher: IEventPublisher;
-  collectionString: string;
 }
 
 // Worker specific services (includes subscribers)
···
       cardCollectionService,
       authMiddleware,
       eventPublisher,
-      collectionString: collections.collection,
     };
   }
 
···
       feedService,
       nodeOauthClient,
       identityResolutionService,
+      configService,
     };
   }
 }

src/shared/infrastructure/http/factories/UseCaseFactory.ts

···
         services.identityResolutionService,
         repositories.atUriResolutionService,
         getCollectionPageUseCase,
-        services.collectionString,
+        services.configService.getAtProtoCollections().collection,
       ),
       getCollectionsUseCase: new GetCollectionsUseCase(
         repositories.collectionQueryRepository,