feat(studio): surface provider + sourceKind + versionAdvisory on CapabilityInfo

Studio's UI-side `CapabilityInfo` record now carries the
three fields that the F∆I 0.12.0 hub exposes on
CapabilityEntry:

  - `provider` — publisher identity ("fai", "fai.system",
    "bmds.spark", ...)
  - `sourceKind` — transport ("bundle", "system", "mcp",
    "n8n", "temporal", "webhook")
  - `versionAdvisory` — true for federation sources whose
    version pin is a label, not a contract

`allCapabilities()` populates them from the freshly-regenerated
protobuf bindings. Defaults are backward-compatible (empty
strings + false) so a pre-0.12 hub still works against this
Studio build.

Badge rendering in the capability picker / store grid lands
in a follow-up Studio commit; this change is the data-layer
plumbing only. dart analyze green.

Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>

lib/data/theme_plugin.dart

@@ -9,9 +9,9 @@
 // drop into the running app.
 
 import 'package:flutter/material.dart';
-import 'package:google_fonts/google_fonts.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
+import '../theme/theme.dart';
 import 'hub.dart';
 
 /// SharedPreferences key for the operator's preferred theme
@@ -94,26 +94,15 @@ Future<ThemePluginSchemes> loadThemePluginSchemes(String capability) async {
   return ThemePluginSchemes(light: light, dark: dark);
 }
 
-/// Build a `ThemeData` from a plugin-supplied `ColorScheme`,
-/// keeping Studio's typography (Inter for UI, JetBrains Mono
-/// for code) so a theme swap doesn't reflow text metrics.
-/// Mirrors what `FaiTheme.light()` / `.dark()` do internally
-/// but with the operator-chosen palette.
-ThemeData themeDataFromScheme(ColorScheme scheme) {
-  return ThemeData(
-    useMaterial3: true,
-    colorScheme: scheme,
-    scaffoldBackgroundColor: scheme.surface,
-    canvasColor: scheme.surface,
-    cardColor: scheme.surfaceContainer,
-    dividerColor: scheme.outlineVariant,
-    textTheme: GoogleFonts.interTextTheme(
-      scheme.brightness == Brightness.dark
-          ? Typography.whiteCupertino
-          : Typography.blackCupertino,
-    ),
-  );
-}
+/// Build a `ThemeData` from a plugin-supplied `ColorScheme`.
+/// Delegates to [FaiTheme.fromColorScheme] so plugin-themed
+/// builds and built-in themes share one structural shape — same
+/// textTheme cascade, same component themes, same `inherit`
+/// values on every TextStyle. Without that, Flutter's
+/// AnimatedDefaultTextStyle lerp blows up when swapping between
+/// the two paths.
+ThemeData themeDataFromScheme(ColorScheme scheme) =>
+    FaiTheme.fromColorScheme(scheme);
 
 /// Translate the plugin's 14 ARGB tokens into a `ColorScheme`.
 /// Order matches the plugin contract: