enhance: いくつかの設定ファイルの項目をコントロールパネルで設定するように (#16026)

* wip

* Update CHANGELOG.md

* feat: migrate to existing config value (#16030)

* wip

* Update CHANGELOG.md

---------

Co-authored-by: anatawa12 <anatawa12@icloud.com>

packages/backend/src/server/api/endpoints/admin/update-meta.ts

@@ -201,6 +201,9 @@ export const paramDef = {
 			type: 'string',
 			enum: ['all', 'local', 'none'],
 		},
+		proxyRemoteFiles: { type: 'boolean' },
+		signToActivityPubGet: { type: 'boolean' },
+		allowExternalApRedirect: { type: 'boolean' },
 	},
 	required: [],
 } as const;
@@ -703,6 +706,18 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				set.ugcVisibilityForVisitor = ps.ugcVisibilityForVisitor;
 			}
 
+			if (ps.proxyRemoteFiles !== undefined) {
+				set.proxyRemoteFiles = ps.proxyRemoteFiles;
+			}
+
+			if (ps.signToActivityPubGet !== undefined) {
+				set.signToActivityPubGet = ps.signToActivityPubGet;
+			}
+
+			if (ps.allowExternalApRedirect !== undefined) {
+				set.allowExternalApRedirect = ps.allowExternalApRedirect;
+			}
+
 			const before = await this.metaService.fetch(true);
 
 			await this.metaService.update(set);