.claude/context/design-system/DESIGN_SYSTEM.md

@@ -340,12 +340,16 @@ Sidebar items are 38px tall with radius 12, an 18px icon and a 14/500 label. The
   Location, Modified, Created, ...). Versions and Activity reuse their own
   row/feed treatment. Same on every platform - this sheet has no iOS/Android
   split.
-- **Media viewer** (the full-screen photo/video viewer): a black stage
-  regardless of theme, like a native photo/video viewer - not `bg`. A
-  translucent, blurred top bar (back, filename, meta) and bottom bar float
-  over the media; this is the one deliberate exception to "no blur" in
-  product UI, since it's chrome over photo/video content, not over the app's
-  own surfaces. Back is a plain arrow (`arrow-left`), not the iOS
+- **Media viewer** (the full-screen photo/video viewer): the stage is `bg`,
+  following the app's own theme rather than a fixed black - a black stage
+  in light mode read as jarringly out of place. A translucent, blurred top
+  bar (back, filename, meta) and bottom bar float over the media in a fixed
+  dark panel regardless of theme (it needs to read over arbitrary photo/
+  video brightness, not over `bg`); this is the one deliberate exception to
+  "no blur" in product UI, since it's chrome over photo/video content, not
+  over the app's own surfaces. Both bars' background extends edge-to-edge
+  behind the status bar/gesture area, with only their content padded clear
+  of it. Back is a plain arrow (`arrow-left`), not the iOS
   chevron+label pushed-screen pattern - platform split still to do. The
   bottom bar holds every action in one row (share, favorite, open
   externally, download, delete, details) on every platform; don't add a

lib/views/file_viewer_screen.dart

@@ -376,14 +376,13 @@ class _FileViewerScreenState extends State<FileViewerScreen> {
     final session = context.read<SessionController>();
     final ops = context.read<ItemOperations>();
     final colors = context.nooColors;
-    // The stage behind the media itself is pure black rather than `bg` -
-    // the near-universal "letterbox" convention of photo/video viewers
-    // (matting an image/video in the app's warm neutral background reads
-    // as unfinished, and black also hides any letterboxing from
-    // `BoxFit.contain`/`AspectRatio` at the screen edges). PDFs/text/
-    // unsupported-file previews aren't "viewed" the same way - they're
-    // read, so they stay on the normal `bg` like any other screen.
-    final stageColor = _isSwipeable ? Colors.black : colors.bg;
+    // The stage follows the app's own theme (`bg`) rather than being pinned
+    // to black - a black stage in light mode read as jarringly out of place
+    // next to the rest of the light-themed app. The floating top/action
+    // bars stay a fixed dark frosted panel regardless (see
+    // FrostedGlassContainer's doc comment) since they need to read over
+    // arbitrary photo/video brightness, not over this background.
+    final stageColor = colors.bg;
 
     return Scaffold(
       backgroundColor: stageColor,
@@ -437,9 +436,13 @@ class _FileViewerScreenState extends State<FileViewerScreen> {
               offset: _controlsVisible ? Offset.zero : const Offset(0, -1.4),
               child: IgnorePointer(
                 ignoring: !_controlsVisible,
-                child: SafeArea(
-                  bottom: false,
-                  child: FrostedGlassContainer(
+                // The blurred/tinted background lives outside the SafeArea
+                // (not inside it) so it extends up behind the status bar
+                // instead of stopping short beneath it - see the matching
+                // fix/comment on MediaActionBar's own SafeArea.
+                child: FrostedGlassContainer(
+                  child: SafeArea(
+                    bottom: false,
                     child: Padding(
                       padding: const EdgeInsets.symmetric(
                         horizontal: 6,
@@ -447,10 +450,9 @@ class _FileViewerScreenState extends State<FileViewerScreen> {
                       ),
                       child: IconTheme.merge(
                         // Fixed white, not `colors.fg1`: this bar always
-                        // sits on the dark translucent panel over a black
-                        // media stage (see `FrostedGlassContainer`'s doc
-                        // comment), regardless of the app's light/dark
-                        // theme.
+                        // sits on the dark translucent panel over the media
+                        // stage (see `FrostedGlassContainer`'s doc comment),
+                        // regardless of the app's light/dark theme.
                         data: const IconThemeData(
                           color: Colors.white,
                           size: 24,

lib/widgets/noo/overlays/noo_sheet.dart

@@ -1,13 +1,23 @@
 import 'package:flutter/material.dart';
 import '../../../theme/design_tokens.dart';
 
+/// Fraction of the available height a sheet can reach before it switches
+/// from sizing to its content to a draggable peek (see [_NooSheetBody]).
+const double _kNooSheetPeekFraction = 0.6;
+const double _kNooSheetMinFraction = 0.3;
+const double _kNooSheetMaxFraction = 0.95;
+
 /// Mobile bottom sheet on a scrim: radius-28 top, grabber, 22px gap between
 /// sections (Noo Design System project, `components/overlays/Sheet.jsx`).
 /// `showModalBottomSheet` already supplies the scrim/backdrop-dismiss
 /// machinery, so this only standardizes the shape/padding - use it instead
-/// of a bare `showModalBottomSheet` for any new sheet. Scroll-controlled so a
-/// tall sheet (e.g. share) can grow past half the screen; content scrolls
-/// once it hits the top.
+/// of a bare `showModalBottomSheet` for any new sheet. Sizes to its content
+/// like a plain scroll view for anything that fits comfortably on screen
+/// (most sheets: a menu, a handful of settings rows); content long enough to
+/// need scrolling (Details' Versions/Activity tabs with many rows, a long
+/// accounts list, ...) instead opens at a native-style peek height the user
+/// can drag up to reveal more of, rather than snapping straight to nearly
+/// the full screen with nothing left to adjust - see [_NooSheetBody].
 Future<T?> showNooSheet<T>(
   BuildContext context, {
   required List<Widget> children,
@@ -20,31 +30,111 @@ Future<T?> showNooSheet<T>(
     isScrollControlled: true,
     useSafeArea: true,
     shape: RoundedRectangleBorder(
-      borderRadius: BorderRadius.vertical(top: Radius.circular(NooRadii.sheetTop)),
+      borderRadius: BorderRadius.vertical(
+        top: Radius.circular(NooRadii.sheetTop),
+      ),
     ),
-    builder: (context) {
-      return SafeArea(
-        child: SingleChildScrollView(
-          padding: const EdgeInsets.fromLTRB(20, 10, 20, 20),
-          child: Column(
-            mainAxisSize: MainAxisSize.min,
-            children: [
-              Container(
-                width: 36,
-                height: 5,
-                decoration: BoxDecoration(
-                  color: colors.surface3,
-                  borderRadius: BorderRadius.circular(NooRadii.pill),
-                ),
-              ),
-              for (final child in children) ...[
-                const SizedBox(height: 22),
-                child,
-              ],
-            ],
-          ),
-        ),
-      );
-    },
+    builder: (context) => _NooSheetBody(children: children),
   );
 }
+
+/// Renders [children] once, unconstrained, to measure their natural height
+/// against the sheet's available height. Content that fits within
+/// [_kNooSheetPeekFraction] just stays as that first (plain, content-sized)
+/// render - the common case for a short menu/option list. Content taller
+/// than that switches to a [DraggableScrollableSheet] opened at the peek
+/// fraction instead, so it never jumps straight to (near) full height with
+/// no room left to adjust. The one extra layout pass for tall content
+/// happens within the sheet's own entrance animation, so it isn't visible
+/// as a jump.
+class _NooSheetBody extends StatefulWidget {
+  final List<Widget> children;
+
+  const _NooSheetBody({required this.children});
+
+  @override
+  State<_NooSheetBody> createState() => _NooSheetBodyState();
+}
+
+class _NooSheetBodyState extends State<_NooSheetBody> {
+  final _contentKey = GlobalKey();
+  bool _measured = false;
+  bool _needsPeek = false;
+
+  void _measureAfterFrame(double availableHeight) {
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      if (!mounted || _measured) return;
+      final box = _contentKey.currentContext?.findRenderObject() as RenderBox?;
+      final contentHeight = box?.size.height ?? 0;
+      setState(() {
+        _measured = true;
+        _needsPeek = contentHeight > availableHeight * _kNooSheetPeekFraction;
+      });
+    });
+  }
+
+  Widget _buildContent(ScrollController? scrollController) {
+    final colors = context.nooColors;
+    return SingleChildScrollView(
+      controller: scrollController,
+      padding: const EdgeInsets.fromLTRB(20, 10, 20, 20),
+      child: Column(
+        key: _measured ? null : _contentKey,
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          Container(
+            width: 36,
+            height: 5,
+            decoration: BoxDecoration(
+              color: colors.surface3,
+              borderRadius: BorderRadius.circular(NooRadii.pill),
+            ),
+          ),
+          for (final child in widget.children) ...[
+            const SizedBox(height: 22),
+            child,
+          ],
+        ],
+      ),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return SafeArea(
+      child: LayoutBuilder(
+        builder: (context, constraints) {
+          if (!_measured) {
+            _measureAfterFrame(constraints.maxHeight);
+            return _buildContent(null);
+          }
+          if (!_needsPeek) {
+            return _buildContent(null);
+          }
+          return DraggableScrollableSheet(
+            initialChildSize: _kNooSheetPeekFraction,
+            minChildSize: _kNooSheetMinFraction,
+            maxChildSize: _kNooSheetMaxFraction,
+            expand: false,
+            builder: (context, scrollController) {
+              // Plain `DraggableScrollableSheet` doesn't dismiss the modal
+              // route on its own when dragged down to its floor - it just
+              // stops resizing there - so pop explicitly once it's been
+              // dragged (near) all the way down, matching a native
+              // peek sheet's swipe-to-dismiss.
+              return NotificationListener<DraggableScrollableNotification>(
+                onNotification: (notification) {
+                  if (notification.extent <= notification.minExtent + 0.01) {
+                    Navigator.of(context).maybePop();
+                  }
+                  return false;
+                },
+                child: _buildContent(scrollController),
+              );
+            },
+          );
+        },
+      ),
+    );
+  }
+}

lib/widgets/viewer/media_action_bar.dart

@@ -46,9 +46,14 @@ class MediaActionBar extends StatelessWidget {
     // favorite/delete stay legible even when the ambient theme is light.
     const dark = NooColors.dark;
 
-    return SafeArea(
-      top: false,
-      child: FrostedGlassContainer(
+    // The blurred/tinted background lives outside the SafeArea (not inside
+    // it) so it extends all the way to the physical bottom edge, behind the
+    // gesture bar/home indicator, instead of the panel itself stopping
+    // short and leaving that strip unstyled - only the actual row content
+    // needs padding up and away from the gesture area.
+    return FrostedGlassContainer(
+      child: SafeArea(
+        top: false,
         child: Column(
           mainAxisSize: MainAxisSize.min,
           children: [

test/widgets/noo/overlays_test.dart

@@ -14,18 +14,26 @@ import 'noo_test_utils.dart';
 
 /// A button that opens an overlay from a context below MaterialApp.
 Widget _launcher(void Function(BuildContext) open) => Builder(
-  builder: (context) => TextButton(onPressed: () => open(context), child: const Text('open')),
+  builder: (context) =>
+      TextButton(onPressed: () => open(context), child: const Text('open')),
 );
 
 Finder _dialogCard() => find.byWidgetPredicate(
-  (w) => w is Container && w.decoration is BoxDecoration && (w.decoration as BoxDecoration).boxShadow != null,
+  (w) =>
+      w is Container &&
+      w.decoration is BoxDecoration &&
+      (w.decoration as BoxDecoration).boxShadow != null,
 );
 
 void main() {
   setUpNooTests();
 
   group('NooOverlayHeader', () {
-    testNooWidgets('title, subtitle, leading and close', (tester, theme, c) async {
+    testNooWidgets('title, subtitle, leading and close', (
+      tester,
+      theme,
+      c,
+    ) async {
       var closed = 0;
       await pumpNoo(
         tester,
@@ -41,23 +49,41 @@ void main() {
         theme: theme,
       );
       expect(find.text('Report.pdf'), findsOneWidget);
-      expect(tester.widget<Text>(find.text('2 MB · Documents')).style!.color, c.fg3);
-      expect(decorationOf(tester, find.byIcon(LucideIcons.x)).color, c.surface2);
+      expect(
+        tester.widget<Text>(find.text('2 MB · Documents')).style!.color,
+        c.fg3,
+      );
+      expect(
+        decorationOf(tester, find.byIcon(LucideIcons.x)).color,
+        c.surface2,
+      );
       await tester.tap(find.byIcon(LucideIcons.x));
       expect(closed, 1);
     });
 
     testWidgets('no close button without onClose', (tester) async {
-      await pumpNoo(tester, const SizedBox(width: 360, child: NooOverlayHeader(title: 'T')));
+      await pumpNoo(
+        tester,
+        const SizedBox(width: 360, child: NooOverlayHeader(title: 'T')),
+      );
       expect(find.byIcon(LucideIcons.x), findsNothing);
     });
   });
 
   group('showNooSheet', () {
-    testNooWidgets('shows children on a surface sheet and dismisses', (tester, theme, c) async {
+    testNooWidgets('shows children on a surface sheet and dismisses', (
+      tester,
+      theme,
+      c,
+    ) async {
       await pumpNoo(
         tester,
-        _launcher((ctx) => showNooSheet<void>(ctx, children: const [Text('Section A'), Text('Section B')])),
+        _launcher(
+          (ctx) => showNooSheet<void>(
+            ctx,
+            children: const [Text('Section A'), Text('Section B')],
+          ),
+        ),
         theme: theme,
       );
       await tester.tap(find.text('open'));
@@ -66,7 +92,8 @@ void main() {
       expect(find.text('Section B'), findsOneWidget);
       final sheet = tester.widget<BottomSheet>(find.byType(BottomSheet));
       expect(sheet.backgroundColor, c.surface);
-      final gap = tester.getTopLeft(find.text('Section B')).dy -
+      final gap =
+          tester.getTopLeft(find.text('Section B')).dy -
           tester.getBottomLeft(find.text('Section A')).dy;
       expect(gap, 22);
 
@@ -74,13 +101,56 @@ void main() {
       await tester.pumpAndSettle();
       expect(find.text('Section A'), findsNothing);
     });
+
+    testNooWidgets('long content opens as a draggable peek, not full height', (
+      tester,
+      theme,
+      c,
+    ) async {
+      await pumpNoo(
+        tester,
+        _launcher(
+          (ctx) => showNooSheet<void>(
+            ctx,
+            children: [
+              for (var i = 0; i < 30; i++)
+                SizedBox(height: 40, child: Text('Row $i')),
+            ],
+          ),
+        ),
+        theme: theme,
+        surfaceSize: const Size(400, 700),
+      );
+      await tester.tap(find.text('open'));
+      await tester.pumpAndSettle();
+
+      // Content (30 * (40 + 22) =~ 1860px) far exceeds the peek fraction of
+      // the 700px-tall surface, so it should switch to a draggable sheet
+      // instead of the plain content-sized scroll view, opened at a peek
+      // (well under half the content height) rather than snapping to
+      // (near) the full 700px available.
+      expect(find.text('Row 0'), findsOneWidget);
+      final sheetHeight = tester
+          .getSize(find.byType(DraggableScrollableSheet))
+          .height;
+      expect(sheetHeight, lessThan(500));
+      expect(sheetHeight, greaterThan(150));
+    });
   });
 
   group('NooDialog', () {
-    testNooWidgets('card is 540 wide, r24, single dialog shadow', (tester, theme, c) async {
+    testNooWidgets('card is 540 wide, r24, single dialog shadow', (
+      tester,
+      theme,
+      c,
+    ) async {
       await pumpNoo(
         tester,
-        NooDialog(title: 'Share "Report.pdf"', onClose: () {}, children: const [Text('body')]),
+        NooDialog(
+          title: 'Share "Report.pdf"',
+          onClose: () {},
+          children: const [Text('body')],
+        ),
         theme: theme,
         surfaceSize: const Size(1200, 900),
       );
@@ -92,7 +162,9 @@ void main() {
       expect(tester.getSize(card).width, 540);
     });
 
-    testWidgets('narrow screens shrink the card to fit with a 24px margin', (tester) async {
+    testWidgets('narrow screens shrink the card to fit with a 24px margin', (
+      tester,
+    ) async {
       await tester.binding.setSurfaceSize(const Size(400, 800));
       addTearDown(() => tester.binding.setSurfaceSize(null));
       await tester.pumpWidget(
@@ -105,7 +177,11 @@ void main() {
       expect(tester.getSize(card).width, 400 - 48);
     });
 
-    testNooWidgets('header close is a 32px surface-2 circle', (tester, theme, c) async {
+    testNooWidgets('header close is a 32px surface-2 circle', (
+      tester,
+      theme,
+      c,
+    ) async {
       var closed = 0;
       await pumpNoo(
         tester,
@@ -118,12 +194,19 @@ void main() {
         theme: theme,
       );
       expect(tester.getSize(find.byType(NooCloseButton)), const Size(32, 32));
-      expect(decorationOf(tester, find.byIcon(LucideIcons.x)).color, c.surface2);
+      expect(
+        decorationOf(tester, find.byIcon(LucideIcons.x)).color,
+        c.surface2,
+      );
       await tester.tap(find.byType(NooCloseButton));
       expect(closed, 1);
     });
 
-    testNooWidgets('showNooDialog uses the scrim and closes via the button', (tester, theme, c) async {
+    testNooWidgets('showNooDialog uses the scrim and closes via the button', (
+      tester,
+      theme,
+      c,
+    ) async {
       Future<String?>? result;
       await pumpNoo(
         tester,
@@ -140,7 +223,9 @@ void main() {
       await tester.tap(find.text('open'));
       await tester.pumpAndSettle();
       expect(find.text('dialog body'), findsOneWidget);
-      final barrier = tester.widgetList<ModalBarrier>(find.byType(ModalBarrier)).last;
+      final barrier = tester
+          .widgetList<ModalBarrier>(find.byType(ModalBarrier))
+          .last;
       expect(barrier.color, c.scrim);
 
       await tester.tap(find.byType(NooCloseButton));
@@ -176,7 +261,10 @@ void main() {
           (ctx) => showNooDialog<void>(
             ctx,
             title: 'T',
-            children: [for (var i = 0; i < 40; i++) SizedBox(height: 60, child: Text('row $i'))],
+            children: [
+              for (var i = 0; i < 40; i++)
+                SizedBox(height: 60, child: Text('row $i')),
+            ],
           ),
         ),
         surfaceSize: const Size(1200, 600),
@@ -189,13 +277,20 @@ void main() {
   });
 
   group('NooTextField', () {
-    testNooWidgets('surface-2, r14, fg-3 placeholder, typing', (tester, theme, c) async {
+    testNooWidgets('surface-2, r14, fg-3 placeholder, typing', (
+      tester,
+      theme,
+      c,
+    ) async {
       String? typed;
       await pumpNoo(
         tester,
         SizedBox(
           width: 400,
-          child: NooTextField(placeholder: 'Name, email or group', onChanged: (v) => typed = v),
+          child: NooTextField(
+            placeholder: 'Name, email or group',
+            onChanged: (v) => typed = v,
+          ),
         ),
         theme: theme,
       );
@@ -209,14 +304,20 @@ void main() {
       expect(typed, 'ali');
     });
 
-    testNooWidgets('mono URL field with inline Copy link button', (tester, theme, c) async {
+    testNooWidgets('mono URL field with inline Copy link button', (
+      tester,
+      theme,
+      c,
+    ) async {
       var copied = 0;
       await pumpNoo(
         tester,
         SizedBox(
           width: 480,
           child: NooTextField(
-            controller: TextEditingController(text: 'https://cloud.example/s/abc'),
+            controller: TextEditingController(
+              text: 'https://cloud.example/s/abc',
+            ),
             mono: true,
             readOnly: true,
             onSurface: false,
@@ -233,7 +334,10 @@ void main() {
       expect(field.style!.fontFamily, NooText.mono.fontFamily);
       expect(field.readOnly, isTrue);
       expect(decorationOf(tester, find.byType(TextField)).color, c.surface);
-      expect(tester.getSize(find.byType(NooButton)).height, NooSizes.buttonField);
+      expect(
+        tester.getSize(find.byType(NooButton)).height,
+        NooSizes.buttonField,
+      );
       await tester.tap(find.text('Copy link'));
       await tester.pumpAndSettle();
       expect(copied, 1);
@@ -241,7 +345,11 @@ void main() {
   });
 
   group('Share parts', () {
-    testNooWidgets('NooShareSection title, trailing and caption', (tester, theme, c) async {
+    testNooWidgets('NooShareSection title, trailing and caption', (
+      tester,
+      theme,
+      c,
+    ) async {
       await pumpNoo(
         tester,
         const SizedBox(
@@ -255,13 +363,26 @@ void main() {
         ),
         theme: theme,
       );
-      expect(tester.widget<Text>(find.text('Send file directly')).style!.color, c.fg1);
-      expect(tester.widget<Text>(find.text("Link settings don't apply")).style!.color, c.fg3);
+      expect(
+        tester.widget<Text>(find.text('Send file directly')).style!.color,
+        c.fg1,
+      );
+      expect(
+        tester
+            .widget<Text>(find.text("Link settings don't apply"))
+            .style!
+            .color,
+        c.fg3,
+      );
       expect(find.byIcon(LucideIcons.link), findsOneWidget);
       expect(find.text('content'), findsOneWidget);
     });
 
-    testNooWidgets('owner row is static, others get a tappable pill', (tester, theme, c) async {
+    testNooWidgets('owner row is static, others get a tappable pill', (
+      tester,
+      theme,
+      c,
+    ) async {
       var taps = 0;
       await pumpNoo(
         tester,
@@ -296,13 +417,19 @@ void main() {
       expect(taps, 1);
     });
 
-    testWidgets('same parts lay out inside the sheet and the dialog', (tester) async {
+    testWidgets('same parts lay out inside the sheet and the dialog', (
+      tester,
+    ) async {
       List<Widget> parts() => [
         NooShareSection(
           title: 'Share with people',
           child: const NooTextField(placeholder: 'Name, email or group'),
         ),
-        const NooPersonAccessRow(avatar: NooAvatar(initials: 'JD'), name: 'Jane', permission: 'Can view'),
+        const NooPersonAccessRow(
+          avatar: NooAvatar(initials: 'JD'),
+          name: 'Jane',
+          permission: 'Can view',
+        ),
       ];
       await pumpNoo(
         tester,
@@ -312,7 +439,8 @@ void main() {
             _launcher((ctx) => showNooSheet<void>(ctx, children: parts())),
             Builder(
               builder: (ctx) => TextButton(
-                onPressed: () => showNooDialog<void>(ctx, title: 'Share', children: parts()),
+                onPressed: () =>
+                    showNooDialog<void>(ctx, title: 'Share', children: parts()),
                 child: const Text('dialog'),
               ),
             ),