chore(lint): remove dead eslint-disable directives

The project lints with Biome only, so none of these 78 directives across 57
files ever suppressed anything. Directives that carried the rationale for a
flagged dynamic index access keep that rationale as a plain comment.

src/app/api/media/route.ts

@@ -12,11 +12,9 @@ import { PERMS } from "@/lib/permissions";
  */
 export const GET = withAdmin({ permission: PERMS.PAGES_EDIT }, async () => {
 	const dir = MEDIA_ROOT;
-	// eslint-disable-next-line security/detect-non-literal-fs-filename
 	if (!existsSync(dir)) {
 		return apiOk({ files: [] });
 	}
-	// eslint-disable-next-line security/detect-non-literal-fs-filename
 	const files = readdirSync(dir)
 		.filter((f) => /\.(png|jpg|jpeg|gif|webp|svg|bmp)$/i.test(f))
 		.map((f) => {