fix: add backwards compatibility exports for augmentation system

- Added deprecated augmentation type exports for compatibility
- Added WebRTCConduitAugmentation stub (deprecated)
- Fixed createConduitAugmentation export
- Maintained backwards compatibility while using new unified system

src/augmentations/conduitAugmentations.ts

@@ -46,6 +46,31 @@ abstract class BaseConduitAugmentation extends BaseAugmentation {
   ): Promise<WebSocketConnection | null>
 }
 
+/**
+ * WebRTC Conduit Augmentation (placeholder for backwards compatibility)
+ * @deprecated Use WebSocketConduitAugmentation instead
+ */
+export class WebRTCConduitAugmentation extends BaseConduitAugmentation {
+  readonly name = 'webrtc-conduit'
+  
+  async execute<T = any>(
+    operation: string,
+    params: any,
+    context?: AugmentationContext
+  ): Promise<T | void> {
+    // Placeholder - WebRTC not yet implemented
+    this.log('WebRTC conduit not yet implemented, use WebSocket instead', 'warn')
+  }
+  
+  async establishConnection(
+    targetSystemId: string,
+    config?: Record<string, unknown>
+  ): Promise<WebSocketConnection | null> {
+    this.log('WebRTC conduit not yet implemented, use WebSocket instead', 'warn')
+    return null
+  }
+}
+
 /**
  * WebSocket Conduit Augmentation
  * Syncs data between Brainy instances using WebSockets