fix(library): support thumbnail generation and display for HEIC and TIF files

docker/frontend/src/Library.tsx

@@ -4,8 +4,8 @@ import { go } from './nav';
 import { api } from './api';
 import { keep, recall } from './remember';
 import { readGps, readSpecs, specsLine } from './engine/imageOps';
-import { isRawName, rawThumbnail } from './engine/rawDevelop';
-import { heicToJpeg, isHeicName } from './engine/heicDevelop';
+import { isRawName, rawThumbnail, tiffThumbnail } from './engine/rawDevelop';
+import { heicThumbnail, heicToJpeg, isHeicName } from './engine/heicDevelop';
 import {
   cachedFolders,
   cachedPhotos,
@@ -2443,18 +2443,40 @@ function useThumbUrls(photos: LibraryPhoto[], also?: LibraryPhoto | null): Recor
 
     if (idsToFetch.length === 0) return;
 
-    void getPhotoThumbs(idsToFetch).then((thumbMap) => {
+    void getPhotoThumbs(idsToFetch).then(async (thumbMap) => {
       if (!alive) return;
-      setUrls((prev) => {
-        const next = { ...prev };
-        for (const photo of list) {
-          const blob = thumbMap.get(photo.id) ?? photo.thumb ?? null;
-          if (blob) {
-            next[photo.id] = cacheObjectUrl(photo.id, blob);
+      const updates: Record<string, string> = {};
+      for (const photo of list) {
+        let blob = thumbMap.get(photo.id) ?? photo.thumb ?? null;
+        if (!blob && photo.handle) {
+          try {
+            const file = await readPhotoFile(photo);
+            if (!alive) return;
+            const name = file.name;
+            if (isHeicName(name)) {
+              const fullBytes = new Uint8Array(await file.arrayBuffer());
+              let prevBytes = await heicThumbnail(fullBytes);
+              if (!prevBytes) prevBytes = await heicToJpeg(fullBytes, 320);
+              if (prevBytes) blob = new Blob([prevBytes as BlobPart], { type: 'image/jpeg' });
+            } else if (isRawName(name) || /\.(tiff?)$/i.test(name)) {
+              const fullBytes = new Uint8Array(await file.arrayBuffer());
+              let prevBytes = await rawThumbnail(fullBytes, name);
+              if (!prevBytes && /\.(tiff?)$/i.test(name)) prevBytes = tiffThumbnail(fullBytes);
+              if (prevBytes) blob = new Blob([prevBytes as BlobPart], { type: 'image/jpeg' });
+            } else {
+              blob = file;
+            }
+          } catch {
+            blob = null;
           }
         }
-        return next;
-      });
+        if (blob && alive) {
+          updates[photo.id] = cacheObjectUrl(photo.id, blob);
+        }
+      }
+      if (alive && Object.keys(updates).length > 0) {
+        setUrls((prev) => ({ ...prev, ...updates }));
+      }
     });
 
     return () => {

docker/frontend/src/engine/library.ts

@@ -14,8 +14,8 @@
 // smart collections) that hand-rolled cursors would make ugly.
 import type { Recipe } from '../../shared/types';
 import { readCapturedAt } from './imageOps';
-import { isRawName, rawThumbnail } from './rawDevelop';
-import { heicThumbnail, isHeicName } from './heicDevelop';
+import { isRawName, rawThumbnail, tiffThumbnail } from './rawDevelop';
+import { heicThumbnail, heicToJpeg, isHeicName } from './heicDevelop';
 import { openAt, walkPass, type Walk, type WalkFile } from './rollWalk';
 
 const DB_NAME = 'recipescam-library';
@@ -905,20 +905,38 @@ export async function scanFolder(
     }
     const raw = isRawName(file.name);
     const isTiff = /\.(tiff?)$/i.test(file.name);
-    // A HEIC is read for its tile the way a RAW is, and reads less: the head of
-    // the file is the whole of what its own thumbnail item needs (see
-    // heicDevelop.ts), so it takes the same slice an ordinary photo does.
     const heic = isHeicName(file.name);
-    const RAW_HEADER_BYTES = 16 * 1024 * 1024;
-    const sliceBuffer = await file.slice(0, (raw || isTiff) ? Math.min(file.size, RAW_HEADER_BYTES) : HEAD_BYTES).arrayBuffer();
+
+    // Slice buffer: HEIC uses up to 4MB; RAW & TIFF use up to 32MB (or full file if smaller).
+    const MAX_SLICE_BYTES = (raw || isTiff) ? 32 * 1024 * 1024 : heic ? 4 * 1024 * 1024 : HEAD_BYTES;
+    const sliceBuffer = await file.slice(0, Math.min(file.size, MAX_SLICE_BYTES)).arrayBuffer();
     const bytes = new Uint8Array(sliceBuffer);
-    const preview = heic
-      ? await heicThumbnail(bytes)
-      : raw || isTiff
-        ? await rawThumbnail(bytes, file.name)
-        : null;
-    const src = preview ? new Blob([preview as BlobPart], { type: 'image/jpeg' }) : raw || heic ? null : file;
-    const size = preview ? jpegSize(preview) : raw || heic ? null : jpegSize(bytes);
+
+    let preview: Uint8Array | null = null;
+    if (heic) {
+      preview = await heicThumbnail(bytes);
+      if (!preview) {
+        try {
+          const fullBytes = new Uint8Array(await file.arrayBuffer());
+          preview = await heicToJpeg(fullBytes, 320);
+        } catch {
+          preview = null;
+        }
+      }
+    } else if (raw || isTiff) {
+      preview = await rawThumbnail(bytes, file.name);
+      if (!preview && isTiff) {
+        try {
+          const fullBytes = new Uint8Array(await file.arrayBuffer());
+          preview = tiffThumbnail(fullBytes);
+        } catch {
+          preview = null;
+        }
+      }
+    }
+
+    const src = preview ? new Blob([preview as BlobPart], { type: 'image/jpeg' }) : (raw || heic || isTiff) ? null : file;
+    const size = preview ? jpegSize(preview) : (raw || heic || isTiff) ? null : jpegSize(bytes);
     const thumb = src ? await tile(src, size) : null;
     const taken = (await readCapturedAt(bytes)) ?? file.lastModified;
     const cut = rel.lastIndexOf('/');

docker/frontend/src/engine/rawDevelop.ts

@@ -191,6 +191,7 @@ half4 main(float2 pos) {
 const RAW_EXT = [
   'arw', 'srf', 'sr2', 'cr2', 'cr3', 'crw', 'nef', 'nrw', 'dng', 'orf', 'raf',
   'rw2', 'pef', 'srw', 'raw', 'rwl', '3fr', 'fff', 'iiq', 'mos', 'mrw', 'x3f',
+  'tif', 'tiff',
 ];
 
 export const RAW_ACCEPT = RAW_EXT.map((e) => `.${e}`).join(',');