diff --git a/AGENTS.md b/AGENTS.md
index 89077f5..3c500e6 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -103,7 +103,7 @@ migrate → Settings → Import).
 
 A note never holds image bytes, only a line
 `![](https://kuhy-cloud.duckdns.org/todo-images/<noteId>/<uuid>.jpg)`
-(`lib/images/image_ref.dart` owns that shape), so sync and older builds are
+(`lib/images/attachment_ref.dart` owns that shape), so sync and older builds are
 untouched. Every image is re-encoded before it leaves the device: ≤2560 px,
 JPEG q85, EXIF stripped after applying its rotation (`image_processing.dart`).
 `ImageCacheStore` keeps every linked image on-device (offline) plus a
diff --git a/lib/attachments/image_store_api.dart b/lib/attachments/image_store_api.dart
index 09ed042..a6a83a0 100644
--- a/lib/attachments/image_store_api.dart
+++ b/lib/attachments/image_store_api.dart
@@ -8,7 +8,7 @@ library;
 
 import 'package:flutter/foundation.dart';
 
-import 'package:todo/images/image_ref.dart';
+import 'package:todo/images/attachment_ref.dart';
 
 /// Where to draw an image from right now.
 sealed class ImageSource {
@@ -70,24 +70,24 @@ abstract class ImageStore extends ChangeNotifier {
   ///
   /// Returns the new ref, or null when [bytes] is not an image. Throws
   /// [ImageStoreException] when it cannot be stored.
-  Future<ImageRef?> attach(String noteId, Uint8List bytes);
+  Future<AttachmentRef?> attach(String noteId, Uint8List bytes);
 
   /// Uploads the queue, fetches every image [noteTexts] link to that this
   /// device lacks, and evicts cached images no note links to.
   Future<void> reconcile(Iterable<String> noteTexts);
 
   /// Where to draw [ref] from.
-  ImageSource sourceFor(ImageRef ref);
+  ImageSource sourceFor(AttachmentRef ref);
 
   /// Whether [ref] is still waiting to upload (always false when unknown).
-  bool isPending(ImageRef ref);
+  bool isPending(AttachmentRef ref);
 
   /// Login and queue summary.
   Future<ImageStoreStatus> status();
 }
 
 /// Every image ref across [noteTexts].
-Set<ImageRef> imageRefsAcross(Iterable<String> noteTexts) => {
+Set<AttachmentRef> imageRefsAcross(Iterable<String> noteTexts) => {
   for (final text in noteTexts) ...imageRefsIn(text),
 };
 
@@ -95,17 +95,17 @@ Set<ImageRef> imageRefsAcross(Iterable<String> noteTexts) => {
 /// outside the app root): attaching is refused, nothing is ever available.
 class NoImageStore extends ImageStore {
   @override
-  Future<ImageRef?> attach(String noteId, Uint8List bytes) async =>
+  Future<AttachmentRef?> attach(String noteId, Uint8List bytes) async =>
       throw const ImageStoreException('Images are not available here');
 
   @override
   Future<void> reconcile(Iterable<String> noteTexts) async {}
 
   @override
-  ImageSource sourceFor(ImageRef ref) => const MissingImageSource();
+  ImageSource sourceFor(AttachmentRef ref) => const MissingImageSource();
 
   @override
-  bool isPending(ImageRef ref) => false;
+  bool isPending(AttachmentRef ref) => false;
 
   @override
   Future<ImageStoreStatus> status() async =>
diff --git a/lib/attachments/image_store_io.dart b/lib/attachments/image_store_io.dart
index 85b2d0e..df52f73 100644
--- a/lib/attachments/image_store_io.dart
+++ b/lib/attachments/image_store_io.dart
@@ -8,13 +8,12 @@ import 'dart:typed_data';
 import 'package:http/http.dart' as http;
 import 'package:path/path.dart' as p;
 import 'package:path_provider/path_provider.dart';
-
 import 'package:todo/attachments/image_password_store.dart';
 import 'package:todo/attachments/image_store_api.dart';
+import 'package:todo/images/attachment_ref.dart';
 import 'package:todo/images/dufs_image_client.dart';
 import 'package:todo/images/image_cache_store.dart';
 import 'package:todo/images/image_processing.dart';
-import 'package:todo/images/image_ref.dart';
 
 /// Opens the store under the app-support directory's `images/`.
 // coverage:ignore-start
@@ -47,10 +46,10 @@ class IoImageStore extends ImageStore {
   final Future<Uint8List?> Function(Uint8List) _prepare;
 
   @override
-  Future<ImageRef?> attach(String noteId, Uint8List bytes) async {
+  Future<AttachmentRef?> attach(String noteId, Uint8List bytes) async {
     final jpeg = await _prepare(bytes);
     if (jpeg == null) return null;
-    final ref = ImageRef.create(noteId);
+    final ref = AttachmentRef.create(noteId);
     try {
       await cache.put(ref, jpeg);
     } on FileSystemException catch (e) {
@@ -67,7 +66,7 @@ class IoImageStore extends ImageStore {
   Future<void> reconcile(Iterable<String> noteTexts) =>
       _sync(imageRefsAcross(noteTexts));
 
-  Future<void> _sync(Set<ImageRef> refs) async {
+  Future<void> _sync(Set<AttachmentRef> refs) async {
     final login = await _passwords.login();
     final client = login == null
         ? null
@@ -83,7 +82,7 @@ class IoImageStore extends ImageStore {
   }
 
   @override
-  ImageSource sourceFor(ImageRef ref) {
+  ImageSource sourceFor(AttachmentRef ref) {
     final file = cache.fileFor(ref);
     return file.existsSync()
         ? LocalImageSource(file.path)
@@ -91,7 +90,7 @@ class IoImageStore extends ImageStore {
   }
 
   @override
-  bool isPending(ImageRef ref) => cache.isPending(ref);
+  bool isPending(AttachmentRef ref) => cache.isPending(ref);
 
   @override
   Future<ImageStoreStatus> status() async => ImageStoreStatus(
diff --git a/lib/attachments/image_store_web.dart b/lib/attachments/image_store_web.dart
index 9864b20..8b51291 100644
--- a/lib/attachments/image_store_web.dart
+++ b/lib/attachments/image_store_web.dart
@@ -9,7 +9,7 @@ import 'dart:typed_data';
 import 'package:http/http.dart' as http;
 
 import 'package:todo/attachments/image_store_api.dart';
-import 'package:todo/images/image_ref.dart';
+import 'package:todo/images/attachment_ref.dart';
 import 'package:todo/sync/desktop_wrapper.dart';
 
 /// Opens the store against the wrapper that served this page.
@@ -34,8 +34,8 @@ class WebImageStore extends ImageStore {
   Uri _images(String rest) => Uri.parse('$origin/images/$rest');
 
   @override
-  Future<ImageRef?> attach(String noteId, Uint8List bytes) async {
-    final ref = ImageRef.create(noteId);
+  Future<AttachmentRef?> attach(String noteId, Uint8List bytes) async {
+    final ref = AttachmentRef.create(noteId);
     final http.Response response;
     try {
       response = await _http.post(_images(ref.relativePath), body: bytes);
@@ -60,7 +60,7 @@ class WebImageStore extends ImageStore {
   Future<void> reconcile(Iterable<String> noteTexts) =>
       _reconcile(imageRefsAcross(noteTexts));
 
-  Future<void> _reconcile(Set<ImageRef> refs) async {
+  Future<void> _reconcile(Set<AttachmentRef> refs) async {
     try {
       final response = await _http.post(
         _images('reconcile'),
@@ -81,11 +81,11 @@ class WebImageStore extends ImageStore {
   }
 
   @override
-  ImageSource sourceFor(ImageRef ref) =>
+  ImageSource sourceFor(AttachmentRef ref) =>
       NetworkImageSource('$origin/images/${ref.relativePath}?r=$_revision');
 
   @override
-  bool isPending(ImageRef ref) => false;
+  bool isPending(AttachmentRef ref) => false;
 
   @override
   Future<ImageStoreStatus> status() async {
diff --git a/lib/data/note_template_parser.dart b/lib/data/note_template_parser.dart
index 4850d8d..3c62c69 100644
--- a/lib/data/note_template_parser.dart
+++ b/lib/data/note_template_parser.dart
@@ -17,7 +17,7 @@
 library;
 
 import 'package:todo/data/note_template.dart';
-import 'package:todo/images/image_ref.dart';
+import 'package:todo/images/attachment_ref.dart';
 
 /// Matches a single `http(s)://…` token.
 final RegExp _linkPattern = RegExp(r'^https?://\S+$');
diff --git a/lib/desktop/wrapper_image_routes.dart b/lib/desktop/wrapper_image_routes.dart
index ee394fd..c12ee64 100644
--- a/lib/desktop/wrapper_image_routes.dart
+++ b/lib/desktop/wrapper_image_routes.dart
@@ -21,13 +21,12 @@ import 'dart:io';
 import 'dart:typed_data';
 
 import 'package:http/http.dart' as http;
-
 import 'package:todo/desktop/dufs_login_env.dart';
 import 'package:todo/desktop/wrapper_paths.dart';
+import 'package:todo/images/attachment_ref.dart';
 import 'package:todo/images/dufs_image_client.dart';
 import 'package:todo/images/image_cache_store.dart';
 import 'package:todo/images/image_processing.dart';
-import 'package:todo/images/image_ref.dart';
 
 /// Largest upload accepted from the page, before re-encoding (a raw 50 MP
 /// phone photo is ~25 MB).
@@ -77,7 +76,7 @@ class WrapperImageRoutes {
         'configured': _login() != null,
         'pending': store.pending().length,
       });
-    } else if (ImageRef.tryParse(rest) case final ref?) {
+    } else if (AttachmentRef.tryParse(rest) case final ref?) {
       if (method == 'GET') {
         await _serve(response, ref);
       } else if (method == 'POST') {
@@ -93,7 +92,7 @@ class WrapperImageRoutes {
 
   DufsLogin? _login() => readDufsLoginEnv(File(loginEnvPath));
 
-  Future<void> _serve(HttpResponse response, ImageRef ref) async {
+  Future<void> _serve(HttpResponse response, AttachmentRef ref) async {
     final file = store.fileFor(ref);
     if (!file.existsSync()) {
       response.statusCode = HttpStatus.notFound;
@@ -106,7 +105,7 @@ class WrapperImageRoutes {
     await response.addStream(file.openRead());
   }
 
-  Future<void> _put(HttpRequest request, ImageRef ref) async {
+  Future<void> _put(HttpRequest request, AttachmentRef ref) async {
     final builder = BytesBuilder(copy: false);
     var tooLarge = false;
     // Read to the end even once over the cap: answering while the browser
@@ -130,12 +129,12 @@ class WrapperImageRoutes {
   }
 
   Future<void> _reconcile(HttpRequest request) async {
-    final Set<ImageRef> refs;
+    final Set<AttachmentRef> refs;
     try {
       final body = jsonDecode(await utf8.decodeStream(request));
       refs = {
         for (final raw in (body as Map<String, dynamic>)['refs'] as List)
-          ?ImageRef.tryParse(raw as String),
+          ?AttachmentRef.tryParse(raw as String),
       };
     } on Object {
       request.response.statusCode = HttpStatus.badRequest;
diff --git a/lib/images/image_ref.dart b/lib/images/attachment_ref.dart
similarity index 85%
rename from lib/images/image_ref.dart
rename to lib/images/attachment_ref.dart
index 4b9bd67..8f5cbcf 100644
--- a/lib/images/image_ref.dart
+++ b/lib/images/attachment_ref.dart
@@ -40,17 +40,17 @@ final _wholeLine = RegExp('^\\s*${_urlLink.pattern}\\s*\$');
 ///
 /// An extension type over that relative path: equality and hashing are the
 /// string's, so refs drop straight into sets.
-extension type const ImageRef._(String relativePath) {
+extension type const AttachmentRef._(String relativePath) {
   /// A new, unique ref for an image being attached to [noteId].
-  factory ImageRef.create(String noteId) {
-    final ref = ImageRef.tryParse('$noteId/${const Uuid().v4()}.jpg');
+  factory AttachmentRef.create(String noteId) {
+    final ref = AttachmentRef.tryParse('$noteId/${const Uuid().v4()}.jpg');
     if (ref == null) throw ArgumentError.value(noteId, 'noteId');
     return ref;
   }
 
   /// Parses `<noteId>/<file>.jpg`, or null when it is not a safe image path.
-  static ImageRef? tryParse(String relativePath) =>
-      _refPath.hasMatch(relativePath) ? ImageRef._(relativePath) : null;
+  static AttachmentRef? tryParse(String relativePath) =>
+      _refPath.hasMatch(relativePath) ? AttachmentRef._(relativePath) : null;
 
   /// The note the image was attached to (it names the folder only).
   String get noteId => relativePath.substring(0, relativePath.indexOf('/'));
@@ -66,15 +66,15 @@ extension type const ImageRef._(String relativePath) {
 }
 
 /// Every image [text] links to, in order, without duplicates.
-Set<ImageRef> imageRefsIn(String text) => {
+Set<AttachmentRef> imageRefsIn(String text) => {
   for (final match in _urlLink.allMatches(text))
-    ImageRef.tryParse(match.group(1)!)!,
+    AttachmentRef.tryParse(match.group(1)!)!,
 };
 
 /// The image when [line] is nothing but one image link, else null.
-ImageRef? imageRefOfLine(String line) {
+AttachmentRef? imageRefOfLine(String line) {
   final match = _wholeLine.firstMatch(line);
-  return match == null ? null : ImageRef.tryParse(match.group(1)!);
+  return match == null ? null : AttachmentRef.tryParse(match.group(1)!);
 }
 
 /// Rewrites image links to their on-disk path under [kBacklogImagesRoot].
diff --git a/lib/images/dufs_image_client.dart b/lib/images/dufs_image_client.dart
index 69338f9..d03cde7 100644
--- a/lib/images/dufs_image_client.dart
+++ b/lib/images/dufs_image_client.dart
@@ -13,7 +13,7 @@ import 'dart:typed_data';
 
 import 'package:http/http.dart' as http;
 
-import 'package:todo/images/image_ref.dart';
+import 'package:todo/images/attachment_ref.dart';
 
 /// A scoped dufs login, e.g. `todo` → `/todo-images`.
 class DufsLogin {
@@ -66,7 +66,7 @@ class DufsImageClient {
       Uri.parse('${login.baseUrl}/$kImagesDir/$relative');
 
   /// PUTs [bytes] as [ref]; true on a 2xx.
-  Future<bool> upload(ImageRef ref, Uint8List bytes) async {
+  Future<bool> upload(AttachmentRef ref, Uint8List bytes) async {
     try {
       final response = await _http.put(
         _uri(ref.relativePath),
@@ -80,12 +80,9 @@ class DufsImageClient {
   }
 
   /// GETs [ref]'s bytes, or null when it is missing or unreachable.
-  Future<Uint8List?> download(ImageRef ref) async {
+  Future<Uint8List?> download(AttachmentRef ref) async {
     try {
-      final response = await _http.get(
-        _uri(ref.relativePath),
-        headers: _auth,
-      );
+      final response = await _http.get(_uri(ref.relativePath), headers: _auth);
       return response.statusCode == 200 ? response.bodyBytes : null;
     } on Exception {
       return null;
diff --git a/lib/images/image_cache_store.dart b/lib/images/image_cache_store.dart
index 6698a08..74cf86c 100644
--- a/lib/images/image_cache_store.dart
+++ b/lib/images/image_cache_store.dart
@@ -14,9 +14,8 @@ import 'dart:io';
 import 'dart:typed_data';
 
 import 'package:path/path.dart' as p;
-
+import 'package:todo/images/attachment_ref.dart';
 import 'package:todo/images/dufs_image_client.dart';
-import 'package:todo/images/image_ref.dart';
 
 /// How long a cached, unreferenced image is kept before eviction.
 ///
@@ -79,15 +78,16 @@ class ImageCacheStore {
   _Pass? _scheduledPass;
 
   /// The cached file for [ref] (it may not exist).
-  File fileFor(ImageRef ref) => File(p.join(root.path, ref.noteId, ref.file));
+  File fileFor(AttachmentRef ref) =>
+      File(p.join(root.path, ref.noteId, ref.file));
 
-  File _marker(ImageRef ref) => File('${fileFor(ref).path}.pending');
+  File _marker(AttachmentRef ref) => File('${fileFor(ref).path}.pending');
 
   /// Whether [ref] is waiting to upload.
-  bool isPending(ImageRef ref) => _marker(ref).existsSync();
+  bool isPending(AttachmentRef ref) => _marker(ref).existsSync();
 
   /// Stores [bytes] as [ref] and queues it for upload.
-  Future<void> put(ImageRef ref, Uint8List bytes) async {
+  Future<void> put(AttachmentRef ref, Uint8List bytes) async {
     final file = fileFor(ref);
     await file.parent.create(recursive: true);
     // Marker first: a crash between the two writes then leaves a marker with
@@ -99,9 +99,9 @@ class ImageCacheStore {
   }
 
   /// Every image waiting to upload.
-  List<ImageRef> pending() => [
+  List<AttachmentRef> pending() => [
     for (final marker in _files('.pending'))
-      ?ImageRef.tryParse(_relative(marker).replaceFirst('.pending', '')),
+      ?AttachmentRef.tryParse(_relative(marker).replaceFirst('.pending', '')),
   ];
 
   /// Uploads the queue, fetches linked images this device lacks, and evicts
@@ -115,7 +115,7 @@ class ImageCacheStore {
   /// Overlapping calls do not run in parallel: calls made before the next
   /// pass starts share it, with their refs unioned and the newest client.
   Future<ReconcileReport> reconcile(
-    Set<ImageRef> referenced,
+    Set<AttachmentRef> referenced,
     DufsImageClient? client,
   ) {
     // Merge into a pass that has not started yet: union the refs (an
@@ -174,11 +174,11 @@ class ImageCacheStore {
     );
   }
 
-  int _evict(Set<ImageRef> referenced) {
+  int _evict(Set<AttachmentRef> referenced) {
     final cutoff = _now().subtract(kEvictionGrace);
     var evicted = 0;
     for (final file in _files('.jpg')) {
-      final ref = ImageRef.tryParse(_relative(file));
+      final ref = AttachmentRef.tryParse(_relative(file));
       if (ref == null || referenced.contains(ref) || isPending(ref)) continue;
       if (file.lastModifiedSync().isAfter(cutoff)) continue;
       file.deleteSync();
@@ -202,6 +202,6 @@ class ImageCacheStore {
 class _Pass {
   const _Pass(this.referenced, this.client);
 
-  final Set<ImageRef> referenced;
+  final Set<AttachmentRef> referenced;
   final DufsImageClient? client;
 }
diff --git a/lib/sync/notes_markdown.dart b/lib/sync/notes_markdown.dart
index 73ee3fe..7e420df 100644
--- a/lib/sync/notes_markdown.dart
+++ b/lib/sync/notes_markdown.dart
@@ -1,5 +1,5 @@
 import 'package:todo/data/note.dart';
-import 'package:todo/images/image_ref.dart';
+import 'package:todo/images/attachment_ref.dart';
 import 'package:uuid/uuid.dart';
 
 /// Serialises notes to (and parses them back from) a single Markdown file.
diff --git a/lib/ui/image_attach.dart b/lib/ui/image_attach.dart
index eb318af..b495981 100644
--- a/lib/ui/image_attach.dart
+++ b/lib/ui/image_attach.dart
@@ -12,7 +12,7 @@ import 'package:flutter/widgets.dart';
 
 import 'package:todo/attachments/image_store_api.dart';
 import 'package:todo/attachments/image_store_scope.dart';
-import 'package:todo/images/image_ref.dart';
+import 'package:todo/images/attachment_ref.dart';
 
 /// Lets a screen insert lines into whichever editor is currently mounted.
 class ImageAttachController {
@@ -52,7 +52,7 @@ Future<void> attachImages(
   int rejected = 0,
 }) async {
   final store = ImageStoreScope.read(context);
-  final refs = <ImageRef>[];
+  final refs = <AttachmentRef>[];
   var notImages = rejected;
   String? failure;
   for (final bytes in images) {
diff --git a/lib/ui/images/image_embed.dart b/lib/ui/images/image_embed.dart
index 014f3dd..451c2b1 100644
--- a/lib/ui/images/image_embed.dart
+++ b/lib/ui/images/image_embed.dart
@@ -6,7 +6,7 @@ import 'package:flutter/material.dart';
 
 import 'package:todo/attachments/image_store_api.dart';
 import 'package:todo/attachments/image_store_scope.dart';
-import 'package:todo/images/image_ref.dart';
+import 'package:todo/images/attachment_ref.dart';
 import 'package:todo/ui/images/image_viewer_screen.dart';
 import 'package:todo/ui/images/local_image.dart';
 
@@ -19,14 +19,10 @@ const kImageWaitingToUpload = 'Waiting to upload';
 /// Renders [ref] from the nearest [ImageStoreScope].
 class ImageEmbed extends StatelessWidget {
   /// Creates an embed; [fit] is `cover` for thumbnails, `contain` inline.
-  const ImageEmbed({
-    required this.ref,
-    this.fit = BoxFit.cover,
-    super.key,
-  });
+  const ImageEmbed({required this.ref, this.fit = BoxFit.cover, super.key});
 
   /// The image to show.
-  final ImageRef ref;
+  final AttachmentRef ref;
 
   /// How the picture fills the embed's box.
   final BoxFit fit;
diff --git a/lib/ui/images/image_strip.dart b/lib/ui/images/image_strip.dart
index c2010d3..0d8b003 100644
--- a/lib/ui/images/image_strip.dart
+++ b/lib/ui/images/image_strip.dart
@@ -1,7 +1,7 @@
 import 'package:design_system/design_system.dart';
 import 'package:flutter/material.dart';
 
-import 'package:todo/images/image_ref.dart';
+import 'package:todo/images/attachment_ref.dart';
 import 'package:todo/ui/images/image_embed.dart';
 
 /// Height of the thumbnail row under the editor.
diff --git a/lib/ui/markdown_view.dart b/lib/ui/markdown_view.dart
index 8ebc9f1..f85a542 100644
--- a/lib/ui/markdown_view.dart
+++ b/lib/ui/markdown_view.dart
@@ -1,7 +1,7 @@
 import 'package:design_system/design_system.dart';
 import 'package:flutter/material.dart';
 
-import 'package:todo/images/image_ref.dart';
+import 'package:todo/images/attachment_ref.dart';
 import 'package:todo/ui/images/image_embed.dart';
 
 /// Tallest an image is drawn inside a rendered note.
@@ -11,10 +11,10 @@ const kInlineImageHeight = 320.0;
 ///
 /// The app's notes use a small, known Markdown subset — an `#` title, `##`
 /// section headings, italic `_guidance_` lines, `-` bullet lists and plain
-/// paragraphs, plus one attached image per line (see `image_ref.dart`) — so a
-/// tailored line-based renderer covers everything we emit
-/// without pulling in a full Markdown engine. It keeps the quick-capture app
-/// lean and is trivial to test.
+/// paragraphs, plus one attached image per line (see `attachment_ref.dart`)
+/// — so a tailored line-based renderer covers everything we emit without
+/// pulling in a full Markdown engine. It keeps the quick-capture app lean and
+/// is trivial to test.
 ///
 /// The whole rendered note is wrapped in a [SelectionArea] so it can be copied
 /// out in one go (the note is meant to be pasted into an LLM).
diff --git a/pubspec.yaml b/pubspec.yaml
index 63b3a82..93b5c2a 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -16,7 +16,7 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 # In Windows, build-name is used as the major, minor, and patch parts
 # of the product and file versions while build-number is used as the build suffix.
-version: 1.0.39+1
+version: 1.0.40+1
 
 environment:
   sdk: ^3.12.2
diff --git a/test/attachments/image_store_api_test.dart b/test/attachments/image_store_api_test.dart
index 9e6eb7d..fd4482a 100644
--- a/test/attachments/image_store_api_test.dart
+++ b/test/attachments/image_store_api_test.dart
@@ -4,10 +4,10 @@ import 'package:flutter/widgets.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:todo/attachments/image_store_api.dart';
 import 'package:todo/attachments/image_store_scope.dart';
-import 'package:todo/images/image_ref.dart';
+import 'package:todo/images/attachment_ref.dart';
 
 void main() {
-  final ref = ImageRef.create('n1');
+  final ref = AttachmentRef.create('n1');
 
   test('NoImageStore refuses to attach and has nothing', () async {
     final store = NoImageStore();
@@ -27,7 +27,7 @@ void main() {
   });
 
   test('imageRefsAcross unions every note', () {
-    final other = ImageRef.create('n2');
+    final other = AttachmentRef.create('n2');
     expect(
       imageRefsAcross([ref.markdown, '${other.markdown}\n${ref.markdown}']),
       {ref, other},
diff --git a/test/attachments/image_store_web_test.dart b/test/attachments/image_store_web_test.dart
index ba27793..1a96575 100644
--- a/test/attachments/image_store_web_test.dart
+++ b/test/attachments/image_store_web_test.dart
@@ -7,7 +7,7 @@ import 'package:http/http.dart' as http;
 import 'package:http/testing.dart';
 import 'package:todo/attachments/image_store_api.dart';
 import 'package:todo/attachments/image_store_web.dart';
-import 'package:todo/images/image_ref.dart';
+import 'package:todo/images/attachment_ref.dart';
 
 void main() {
   final requests = <http.Request>[];
@@ -84,7 +84,7 @@ void main() {
   );
 
   test('reconcile sends every linked ref; a download bumps the url', () async {
-    final ref = ImageRef.create('n1');
+    final ref = AttachmentRef.create('n1');
     final store = make((_) async => report(downloaded: 1));
     await store.reconcile(['a ${ref.markdown}', 'none']);
     expect(jsonDecode(requests.single.body), {
diff --git a/test/desktop/wrapper_image_routes_test.dart b/test/desktop/wrapper_image_routes_test.dart
index 7832a0e..38f61d8 100644
--- a/test/desktop/wrapper_image_routes_test.dart
+++ b/test/desktop/wrapper_image_routes_test.dart
@@ -8,7 +8,7 @@ import 'package:path/path.dart' as p;
 import 'package:todo/desktop/wrapper_image_routes.dart';
 import 'package:todo/desktop/wrapper_server.dart';
 import 'package:todo/images/image_cache_store.dart';
-import 'package:todo/images/image_ref.dart';
+import 'package:todo/images/attachment_ref.dart';
 
 import '../images/fake_dufs.dart';
 
@@ -71,7 +71,7 @@ void main() {
       body: Uint8List.fromList([0xFF, 1, 2]),
     );
     expect(post.statusCode, 204);
-    expect(store.isPending(ImageRef.tryParse(rel)!), isTrue);
+    expect(store.isPending(AttachmentRef.tryParse(rel)!), isTrue);
     final get = await http.get(Uri.parse('$base/images/$rel'));
     expect(get.statusCode, 200);
     expect(get.headers['content-type'], 'image/jpeg');
diff --git a/test/fake_image_store.dart b/test/fake_image_store.dart
index da4093c..8f56a45 100644
--- a/test/fake_image_store.dart
+++ b/test/fake_image_store.dart
@@ -7,22 +7,22 @@ import 'dart:async';
 import 'dart:typed_data';
 
 import 'package:todo/attachments/image_store_api.dart';
-import 'package:todo/images/image_ref.dart';
+import 'package:todo/images/attachment_ref.dart';
 
 /// Records attaches and reconciles; every image is "local" at a fake path
 /// unless listed in [missing].
 class FakeImageStore extends ImageStore {
   /// Bytes accepted per ref, in attach order.
-  final Map<ImageRef, Uint8List> attached = {};
+  final Map<AttachmentRef, Uint8List> attached = {};
 
   /// Note texts passed to each reconcile.
   final List<List<String>> reconciles = [];
 
   /// Refs reported as not on this device.
-  final Set<ImageRef> missing = {};
+  final Set<AttachmentRef> missing = {};
 
   /// Refs reported as waiting to upload.
-  final Set<ImageRef> pending = {};
+  final Set<AttachmentRef> pending = {};
 
   /// Inputs whose first byte is this are "not an image".
   int notImageMarker = 0;
@@ -40,12 +40,12 @@ class FakeImageStore extends ImageStore {
   Future<void>? gate;
 
   @override
-  Future<ImageRef?> attach(String noteId, Uint8List bytes) async {
+  Future<AttachmentRef?> attach(String noteId, Uint8List bytes) async {
     await gate;
     final failure = this.failure;
     if (failure != null) throw failure;
     if (bytes.isNotEmpty && bytes.first == notImageMarker) return null;
-    final ref = ImageRef.create(noteId);
+    final ref = AttachmentRef.create(noteId);
     attached[ref] = bytes;
     return ref;
   }
@@ -55,7 +55,7 @@ class FakeImageStore extends ImageStore {
       reconciles.add(noteTexts.toList());
 
   @override
-  ImageSource sourceFor(ImageRef ref) {
+  ImageSource sourceFor(AttachmentRef ref) {
     if (missing.contains(ref)) return const MissingImageSource();
     return network
         ? NetworkImageSource('http://localhost/images/$ref')
@@ -63,7 +63,7 @@ class FakeImageStore extends ImageStore {
   }
 
   @override
-  bool isPending(ImageRef ref) => pending.contains(ref);
+  bool isPending(AttachmentRef ref) => pending.contains(ref);
 
   @override
   Future<ImageStoreStatus> status() async =>
diff --git a/test/images/image_ref_test.dart b/test/images/attachment_ref_test.dart
similarity index 83%
rename from test/images/image_ref_test.dart
rename to test/images/attachment_ref_test.dart
index 0abad2c..9edc71a 100644
--- a/test/images/image_ref_test.dart
+++ b/test/images/attachment_ref_test.dart
@@ -1,9 +1,9 @@
 import 'package:flutter_test/flutter_test.dart';
-import 'package:todo/images/image_ref.dart';
+import 'package:todo/images/attachment_ref.dart';
 
 void main() {
   const rel = 'note-1/0815ff8a-203e-4f54-9cc5-8a58b27982ec.jpg';
-  final ref = ImageRef.tryParse(rel)!;
+  final ref = AttachmentRef.tryParse(rel)!;
 
   test('a ref exposes its parts, url and markdown', () {
     expect(ref.noteId, 'note-1');
@@ -14,15 +14,15 @@ void main() {
   });
 
   test('create files a fresh uuid jpg under the note', () {
-    final a = ImageRef.create('n1');
-    final b = ImageRef.create('n1');
+    final a = AttachmentRef.create('n1');
+    final b = AttachmentRef.create('n1');
     expect(a.noteId, 'n1');
     expect(a.file, endsWith('.jpg'));
     expect(a, isNot(b));
   });
 
   test('create refuses an unsafe note id', () {
-    expect(() => ImageRef.create('../x'), throwsArgumentError);
+    expect(() => AttachmentRef.create('../x'), throwsArgumentError);
   });
 
   test('tryParse rejects traversal, nesting and other extensions', () {
@@ -35,16 +35,16 @@ void main() {
       '/a/b.jpg',
       'a b/c.jpg',
     ]) {
-      expect(ImageRef.tryParse(bad), isNull, reason: bad);
+      expect(AttachmentRef.tryParse(bad), isNull, reason: bad);
     }
   });
 
   test('refs compare by path, so sets dedupe', () {
-    expect({ref, ImageRef.tryParse(rel)!}, hasLength(1));
+    expect({ref, AttachmentRef.tryParse(rel)!}, hasLength(1));
   });
 
   test('imageRefsIn finds every dufs image link, in order, once', () {
-    final other = ImageRef.create('n2');
+    final other = AttachmentRef.create('n2');
     final text =
         'hi ${ref.markdown} and\n${other.markdown}\n${ref.markdown}\n'
         '![x](https://example.com/a.jpg) ![]($kDufsBaseUrl/Keepass/a.jpg)';
diff --git a/test/images/dufs_image_client_test.dart b/test/images/dufs_image_client_test.dart
index 7a1e7b3..e98bcd4 100644
--- a/test/images/dufs_image_client_test.dart
+++ b/test/images/dufs_image_client_test.dart
@@ -6,10 +6,10 @@ import 'package:flutter_test/flutter_test.dart';
 import 'package:http/http.dart' as http;
 import 'package:http/testing.dart';
 import 'package:todo/images/dufs_image_client.dart';
-import 'package:todo/images/image_ref.dart';
+import 'package:todo/images/attachment_ref.dart';
 
 void main() {
-  final ref = ImageRef.tryParse('n1/a.jpg')!;
+  final ref = AttachmentRef.tryParse('n1/a.jpg')!;
   const login = DufsLogin(user: 'todo', password: 'pw', baseUrl: 'https://d');
   final auth = 'Basic ${base64.encode(utf8.encode('todo:pw'))}';
 
diff --git a/test/images/image_cache_store_test.dart b/test/images/image_cache_store_test.dart
index 0b5e542..29f1fd9 100644
--- a/test/images/image_cache_store_test.dart
+++ b/test/images/image_cache_store_test.dart
@@ -5,7 +5,7 @@ import 'dart:typed_data';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:path/path.dart' as p;
 import 'package:todo/images/image_cache_store.dart';
-import 'package:todo/images/image_ref.dart';
+import 'package:todo/images/attachment_ref.dart';
 
 import 'fake_dufs.dart';
 
@@ -15,8 +15,8 @@ void main() {
   late FakeDufs dufs;
   var now = DateTime(2026, 9, 25, 12);
 
-  final a = ImageRef.tryParse('n1/a.jpg')!;
-  final b = ImageRef.tryParse('n2/b.jpg')!;
+  final a = AttachmentRef.tryParse('n1/a.jpg')!;
+  final b = AttachmentRef.tryParse('n2/b.jpg')!;
   final bytes = Uint8List.fromList([1, 2, 3]);
 
   setUp(() {
@@ -27,7 +27,7 @@ void main() {
   });
   tearDown(() => root.deleteSync(recursive: true));
 
-  void age(ImageRef ref, Duration by) =>
+  void age(AttachmentRef ref, Duration by) =>
       store.fileFor(ref).setLastModifiedSync(now.subtract(by));
 
   test('put stores the file and queues it', () async {
diff --git a/test/ui_images/detail_and_misc_images_test.dart b/test/ui_images/detail_and_misc_images_test.dart
index 2e72d6b..f2373c5 100644
--- a/test/ui_images/detail_and_misc_images_test.dart
+++ b/test/ui_images/detail_and_misc_images_test.dart
@@ -6,7 +6,7 @@ import 'package:todo/attachments/image_store_scope.dart';
 import 'package:todo/data/app_settings.dart';
 import 'package:todo/data/note.dart';
 import 'package:todo/data/note_template_parser.dart';
-import 'package:todo/images/image_ref.dart';
+import 'package:todo/images/attachment_ref.dart';
 import 'package:todo/sync/desktop_wrapper.dart';
 import 'package:todo/sync/notes_markdown.dart';
 import 'package:todo/ui/capture_draft.dart';
@@ -30,7 +30,7 @@ Note note(String text) => Note(
 );
 
 void main() {
-  final ref = ImageRef.create('n1');
+  final ref = AttachmentRef.create('n1');
 
   testWidgets('detail: 📎 inserts at the cursor and persists', (tester) async {
     tester.view.physicalSize = const Size(1200, 2400);
diff --git a/test/ui_images/image_embed_test.dart b/test/ui_images/image_embed_test.dart
index 3137767..c2688ed 100644
--- a/test/ui_images/image_embed_test.dart
+++ b/test/ui_images/image_embed_test.dart
@@ -4,7 +4,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:image/image.dart' as img;
 import 'package:todo/attachments/image_store_scope.dart';
-import 'package:todo/images/image_ref.dart';
+import 'package:todo/images/attachment_ref.dart';
 import 'package:todo/ui/images/image_embed.dart';
 import 'package:todo/ui/images/image_strip.dart';
 import 'package:todo/ui/images/image_viewer_screen.dart';
@@ -12,7 +12,7 @@ import 'package:todo/ui/images/image_viewer_screen.dart';
 import '../fake_image_store.dart';
 
 void main() {
-  final ref = ImageRef.create('n1');
+  final ref = AttachmentRef.create('n1');
   late FakeImageStore store;
   late Directory dir;
 
@@ -82,7 +82,7 @@ void main() {
   });
 
   testWidgets('the strip shows one thumbnail per linked image', (tester) async {
-    final other = ImageRef.create('n2');
+    final other = AttachmentRef.create('n2');
     await pump(
       tester,
       ImageStrip(text: 'x\n${ref.markdown}\n${other.markdown}'),