feat(fonts): default UI font back to Josefin Sans

Reverts the Inter default introduced in 2.7.0 — Josefin Sans (Light, w300) is
the default UI face again. Inter stays bundled and selectable in Settings →
Appearance; JetBrains Mono remains the default monospace with Fira Mono
selectable. Flips clideUiFamily/default weight, the picker's default + option
order, and the licenses.yaml purpose notes.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -20,6 +20,10 @@ heading, and (b) bumping `pubspec.yaml` `version:` in the same commit.
 
 ### Changed
 
+- **Josefin Sans is the default UI font again.** Reverts the Inter default from
+  2.7.0; Inter stays bundled and selectable in Settings → Appearance. JetBrains
+  Mono remains the default monospace face (Fira Mono selectable). (T-460)
+
 ### Fixed
 
 - **Markdown prose honours the UI-font setting.** Claude's conversation prose

assets/licenses.yaml

@@ -76,8 +76,8 @@ dependencies:
     license: OFL-1.1
     license_file: assets/fonts/inter/OFL.txt
     purpose: >-
-      Default application UI face (T-460). Variable font with optical-size
-      and weight axes; Josefin Sans remains bundled as a selectable option.
+      Selectable application UI face (bundled T-460); Josefin Sans is the
+      default. Variable font with optical-size and weight axes.
     weights_bundled: [VariableFont, Italic-VariableFont]
 
   - name: Josefin Sans
@@ -87,8 +87,9 @@ dependencies:
     license: OFL-1.1
     license_file: assets/fonts/josefin_sans/OFL.txt
     purpose: >-
-      Selectable application UI face (was the default before T-460). Default
-      weight Light (300); full 100-700 range via the variable-font weight axis.
+      Default application UI face; default weight Light (300), full 100-700
+      range via the variable-font weight axis. Inter is bundled as a
+      selectable alternative.
     weights_bundled: [VariableFont, Italic-VariableFont]
 
   - name: Phosphor Icons

lib/builtin/theme_picker/src/extension.dart

@@ -64,10 +64,10 @@ class ThemePickerExtension extends ClideExtension {
                 kind: SettingsFieldKind.select,
                 label: 'UI font',
                 help: 'Typeface for the app interface; applies live.',
-                defaultValue: 'Inter',
+                defaultValue: 'JosefinSans',
                 options: [
-                  SettingsOption(value: 'Inter', label: 'Inter'),
                   SettingsOption(value: 'JosefinSans', label: 'Josefin Sans'),
+                  SettingsOption(value: 'Inter', label: 'Inter'),
                 ],
               ),
               SettingsField(

lib/widgets/src/typography.dart

@@ -16,23 +16,23 @@ library;
 import 'package:flutter/widgets.dart' show FontWeight;
 
 // ---------------------------------------------------------------------------
-// UI face — Inter
+// UI face — Josefin Sans
 // ---------------------------------------------------------------------------
 
-/// The bundled application UI family, resolved first (T-460). The settings
-/// override ([kUiFontSettingKey]) takes precedence at the app root when set.
-const String clideUiFamily = 'Inter';
+/// The bundled default application UI family, resolved first. Inter stays
+/// bundled and selectable (Settings → Appearance); the settings override
+/// ([kUiFontSettingKey]) takes precedence at the app root when set.
+const String clideUiFamily = 'JosefinSans';
 
-/// Default weight for UI text.
-const FontWeight clideUiDefaultWeight = FontWeight.w400;
+/// Default weight for UI text — Josefin Sans reads best at Light.
+const FontWeight clideUiDefaultWeight = FontWeight.w300;
 
 /// System fallback chain for the UI face — the other bundled UI option plus
 /// platform humanist sans defaults.
 const List<String> clideUiFamilyFallback = [
   // The other bundled UI family (selectable in Appearance).
-  'JosefinSans',
-  // User system install / platform humanist sans defaults.
   'Inter',
+  // User system install / platform humanist sans defaults.
   'Helvetica Neue',
   'Helvetica',
   'Arial',