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/hub.dart

@@ -135,6 +135,9 @@ class HubService {
               version: c.version,
               moduleName: c.moduleName,
               kind: c.kind.isEmpty ? 'wasm' : c.kind,
+              provider: c.provider,
+              sourceKind: c.sourceKind,
+              versionAdvisory: c.versionAdvisory,
             ))
         .toList();
   }
@@ -915,12 +918,27 @@ class CapabilityInfo {
   final String version;
   final String moduleName;
   final String kind;
+  /// Publisher segment of the fully-qualified identifier.
+  /// "fai" for legacy bundles, "fai.system" for built-ins,
+  /// operator-config service name for federated capabilities.
+  final String provider;
+  /// Transport that delivers the capability: bundle / system /
+  /// mcp / n8n / temporal / webhook. Empty string falls back
+  /// to deriving from `kind` for pre-0.12 hubs.
+  final String sourceKind;
+  /// Whether the version on this capability is a label rather
+  /// than a hard contract. True for federation sources whose
+  /// upstream service does not honour semver.
+  final bool versionAdvisory;
 
   const CapabilityInfo({
     required this.capability,
     required this.version,
     required this.moduleName,
     required this.kind,
+    this.provider = '',
+    this.sourceKind = '',
+    this.versionAdvisory = false,
   });
 }