Fix tag chips unreadable in Light theme

CHANGELOG.md

@@ -18,6 +18,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   edits survive app updates. Delete it to restore the default set.
 
 ### Fixed
+- **Tag chips unreadable in Light theme.** Tag chips on snip cards (and the
+  parameter-type badge in Shared parameters) showed dark text on the accent fill in
+  Light theme. They now use the on-accent text colour, readable in both themes.
 - **Window caption buttons invisible in Light theme.** The minimise, maximise and
   close glyphs were always white, leaving them barely visible against the light
   title bar. They now take a theme-appropriate colour, update when you switch

src/Snipdeck.App/Controls/SnipCard.xaml

@@ -80,8 +80,12 @@
                     <Border Background="{ThemeResource AccentFillColorSecondaryBrush}"
                             CornerRadius="10"
                             Padding="8,2">
+                        <!-- Explicit on-accent foreground: without it the text falls
+                             back to the theme's default (dark in Light theme), which
+                             is unreadable on the accent fill. -->
                         <TextBlock Text="{x:Bind}"
-                                   Style="{ThemeResource CaptionTextBlockStyle}" />
+                                   Style="{ThemeResource CaptionTextBlockStyle}"
+                                   Foreground="{ThemeResource TextOnAccentFillColorPrimaryBrush}" />
                     </Border>
                 </DataTemplate>
             </ItemsControl.ItemTemplate>

src/Snipdeck.App/Views/ShellPage.xaml

@@ -513,7 +513,8 @@
                                                         Padding="8,2"
                                                         VerticalAlignment="Center">
                                                     <TextBlock Text="{x:Bind TypeDisplay}"
-                                                               Style="{ThemeResource CaptionTextBlockStyle}" />
+                                                               Style="{ThemeResource CaptionTextBlockStyle}"
+                                                               Foreground="{ThemeResource TextOnAccentFillColorPrimaryBrush}" />
                                                 </Border>
                                             </Grid>
                                             <TextBlock Style="{ThemeResource CaptionTextBlockStyle}"