Fix harmonize:images thumb rebuild and allow oversized museum scans.

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/regenerate-thumbnails.js

@@ -51,7 +51,7 @@ async function unlinkOldThumbRel(thumbRel, imageRel) {
 }
 
 async function aspectRatio(filePath) {
-  const meta = await sharp(filePath).metadata();
+  const meta = await sharp(filePath, { limitInputPixels: false }).metadata();
   if (!meta.width || !meta.height) return null;
   return meta.width / meta.height;
 }