refactor: rename instance.caughtAt to instance.firstRetrievedAt

packages/backend/src/core/FederatedInstanceService.ts

@@ -34,7 +34,7 @@ export class FederatedInstanceService {
 			const i = await this.instancesRepository.insert({
 				id: this.idService.genId(),
 				host,
-				caughtAt: new Date(),
+				firstRetrievedAt: new Date(),
 			}).then(x => this.instancesRepository.findOneByOrFail(x.identifiers[0]));
 	
 			this.cache.set(host, i);

packages/backend/src/core/entities/InstanceEntityService.ts

@@ -29,7 +29,7 @@ export class InstanceEntityService {
 		const meta = await this.metaService.fetch();
 		return {
 			id: instance.id,
-			caughtAt: instance.caughtAt.toISOString(),
+			firstRetrievedAt: instance.firstRetrievedAt.toISOString(),
 			host: instance.host,
 			usersCount: instance.usersCount,
 			notesCount: instance.notesCount,