Add DNG support v0.7

app/static/app.js

@@ -120,11 +120,12 @@ function formatType(filename) {
   if (extension === 'png') return 'PNG';
   if (extension === 'tif' || extension === 'tiff') return 'TIFF';
   if (extension === 'heic' || extension === 'heif' || extension === 'hif') return 'HEIF';
+  if (extension === 'dng') return 'DNG';
   return extension.toUpperCase();
 }
 
 function requiresServerPreview(photo) {
-  return photo.format === 'TIFF' || photo.format === 'HEIF';
+  return photo.format === 'TIFF' || photo.format === 'HEIF' || photo.format === 'DNG';
 }
 
 function storageKey() {
@@ -178,7 +179,7 @@ async function scanFolder() {
   const photos = [];
 
   for await (const [name, handle] of state.directoryHandle.entries()) {
-    if (handle.kind !== 'file' || !/\.(jpe?g|png|tiff?|heic|heif|hif)$/i.test(name)) continue;
+    if (handle.kind !== 'file' || !/\.(jpe?g|png|tiff?|heic|heif|hif|dng)$/i.test(name)) continue;
     const file = await handle.getFile();
     const previous = stored.photos?.[name] || {};
     const unchanged = !previous.lastModified || previous.lastModified === file.lastModified;
@@ -217,7 +218,7 @@ async function scanFolder() {
   } else {
     elements.viewerContent.classList.add('hidden');
     elements.viewerEmpty.classList.remove('hidden');
-    showToast('No JPG, PNG, TIFF, HEIC, HEIF, or HIF files were found in that folder.', true);
+    showToast('No JPG, PNG, TIFF, HEIC, HEIF, HIF, or DNG files were found in that folder.', true);
   }
 }