Two pieces of the Studio plugin host:
- `data/theme_plugin.dart`: discovery, persistence, ColorScheme
translation. Plugins listed via list_capabilities filtered
to studio.theme.*; selection persisted in SharedPreferences;
loadThemePluginSchemes builds a ColorScheme pair from the
plugin's 14 ARGB tokens per brightness.
- `main.dart`: StudioApp gains themePluginNotifier +
setThemePlugin(). MaterialApp wraps a FutureBuilder that
re-fetches the plugin's ColorSchemes whenever the
capability flips; falls back to FaiTheme.light/dark on
null or load failure.
- `fai_settings_dialog.dart`: new `_ThemePluginPanel` shows a
dropdown of installed studio.theme.* capabilities + a
"Built-in" entry. Switching applies immediately.
- HubService.invokePluginTranslate added as the typed wrapper
for the new gRPC RPC — ready for the FaiEnBadge swap-out
in the next iteration.
- 4 new l10n keys (themePluginHeader / None / Hint / Empty),
EN+DE.
flutter analyze + flutter test (widget + friendly_error): both
green. The integration test for the theme picker is the
existing fai_runtime plugin_theme + Studio-side
invokePluginTheme path that round-trips through the new
mirror-installable studio-theme-solarized bundle.
Signed-off-by: flemming-it <sf@flemming.it>
Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>
