fix: complete marketplace client remediation

electron/api/coding-product-services.ts

@@ -85,6 +85,7 @@ export type PublicPluginInstallation = Readonly<{
   pluginId: string;
   releaseId?: string;
   version?: string;
+  channel?: 'stable' | 'beta';
   reason?: string;
 }>;
 
@@ -122,6 +123,7 @@ function publicInstallation(snapshot: InstallationSnapshot): PublicPluginInstall
     pluginId: snapshot.pluginId,
     ...(snapshot.releaseId ? { releaseId: snapshot.releaseId } : {}),
     ...(snapshot.version ? { version: snapshot.version } : {}),
+    ...(snapshot.channel ? { channel: snapshot.channel } : {}),
     ...(snapshot.reason ? { reason: snapshot.reason } : {}),
   };
 }
@@ -134,10 +136,12 @@ async function publicLibrary(
     try {
       const record = await packageStore.getInstalled(pluginId);
       return record ? {
-        status: 'installed' as const,
+        status: record.unavailableReason ? 'unavailable' as const : 'installed' as const,
         pluginId: record.pluginId,
         releaseId: record.releaseId,
         version: record.version,
+        ...(record.channel === undefined ? {} : { channel: record.channel }),
+        ...(record.unavailableReason ? { reason: record.unavailableReason } : {}),
       } : null;
     } catch (error) {
       const candidate = error && typeof error === 'object' && 'code' in error