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

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

scripts/image-fetcher.js

@@ -1691,7 +1691,13 @@ async function generateThumbnailFromFull(fullDest, thumbDest, width = THUMB_WIDT
   if (!fs.existsSync(fullDest)) return false;
 
   const ext = path.extname(thumbDest).toLowerCase();
-  let pipeline = sharp(fullDest).rotate().resize({ width, withoutEnlargement: true });
+  // Museum scans can exceed Sharp's default ~268MP input cap; we only resize down.
+  let pipeline = sharp(fullDest, {
+    limitInputPixels: false,
+    sequentialRead: true,
+  })
+    .rotate()
+    .resize({ width, withoutEnlargement: true });
 
   if (ext === '.png') {
     pipeline = pipeline.png({ quality: 85 });