Desktop connection SaaS: config, billing, team support (#5768)

Co-authored-by: James Brunton <[email protected]>
Co-authored-by: James Brunton <[email protected]>

frontend/src/core/hooks/useConversionCloudStatus.ts

@@ -0,0 +1,21 @@
+/**
+ * Comprehensive conversion status data
+ */
+export interface ConversionStatus {
+  availability: Record<string, boolean>;   // Available on local OR SaaS?
+  cloudStatus: Record<string, boolean>;    // Will use cloud?
+  localOnly: Record<string, boolean>;      // Available ONLY locally (not on SaaS)?
+}
+
+/**
+ * Core stub for conversion cloud status checking
+ * Desktop layer provides the real implementation
+ * In web builds, always returns empty objects (no cloud routing)
+ */
+export function useConversionCloudStatus(): ConversionStatus {
+  return {
+    availability: {},
+    cloudStatus: {},
+    localOnly: {},
+  }; // Core stub - web builds don't use cloud
+}