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oott/frontend/lib/theme/dimens.dart
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rzuastiandClaude Opus 4.8 9367c359d7 Polish frontend: design tokens, theming, AppBar titles, empty/loading states
Frontend usability and aesthetics pass across web and mobile:

- Add shared layout tokens (theme/dimens.dart: Insets + Breakpoints) and
  replace magic-number spacing and per-file breakpoint consts.
- Route both themes through buildAppTheme (theme/theme_builder.dart): explicit
  useMaterial3 and a shared branded textTheme (Barlow Condensed for
  display/headline/title styles); logo now reads its style from the theme.
- Move screen titles into the shared AppBar (route-derived) and drop the
  redundant in-body headers; upgrade Settings buttons to M3 FilledButton.
- Add reusable EmptyState and skeleton loaders; Devices empty state links to
  scanner status, notifications get filter-aware messages.
- Add a first-run welcome intro and Save-disabled helper text in Settings.
- Make device Filter/Sort adaptive: bottom sheet on phones, dialog on wide.
- Collapse the device-list filter chips and Sort/Filter buttons into one row;
  rename the home Scanners card title and align its style.

Tests: add EmptyState/skeleton widget tests and Settings first-run cases;
update tests for the FilledButton swap and relocated titles. 89 passing,
dart analyze clean.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-04 08:39:37 -04:00

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Dart

/// Shared layout tokens for consistent spacing and responsive breakpoints.
///
/// Use these instead of hand-written magic numbers so spacing stays uniform
/// across screens and breakpoints are defined in a single place.
library;
/// Spacing scale (logical pixels). Used for padding, margins and gaps.
abstract final class Insets {
static const double xs = 4;
static const double sm = 8;
static const double md = 12;
static const double lg = 16;
static const double xl = 20;
static const double xxl = 24;
static const double xxxl = 32;
}
/// Responsive layout breakpoints, aligned with Material 3 window size classes.
abstract final class Breakpoints {
/// Compact → medium: switch from bottom NavigationBar to NavigationRail.
static const double medium = 600;
/// Medium → expanded: extend the NavigationRail with labels.
static const double expanded = 840;
/// Home screen switches to its two-column layout at this width.
static const double twoColumn = 700;
}