feat: license violation protection (#13285)

* spec(frontend): aboutページにリポジトリ・フィードバックのURLを表示させる

Cherry-picked from MisskeyIO#441
Cherry-picked from MisskeyIO#438

* feat: license violation protection

* build: fix typo

* build: fix typo

* fix: farewell to the static type land

* fix: key typo

* fix: import typo

* fix: properly interpret `prominently`

* docs: add disclaimer

* docs: update CHANGELOG

* chore: add gap

---------

Co-authored-by: まっちゃとーにゅ <17376330+u1-liquid@users.noreply.github.com>
Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

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

@@ -104,8 +104,8 @@ export const paramDef = {
 		swPublicKey: { type: 'string', nullable: true },
 		swPrivateKey: { type: 'string', nullable: true },
 		tosUrl: { type: 'string', nullable: true },
-		repositoryUrl: { type: 'string' },
-		feedbackUrl: { type: 'string' },
+		repositoryUrl: { type: 'string', nullable: true },
+		feedbackUrl: { type: 'string', nullable: true },
 		impressumUrl: { type: 'string', nullable: true },
 		privacyPolicyUrl: { type: 'string', nullable: true },
 		useObjectStorage: { type: 'boolean' },
@@ -402,7 +402,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 			}
 
 			if (ps.repositoryUrl !== undefined) {
-				set.repositoryUrl = ps.repositoryUrl;
+				set.repositoryUrl = URL.canParse(ps.repositoryUrl!) ? ps.repositoryUrl : null;
 			}
 
 			if (ps.feedbackUrl !== undefined) {