fix: restore listAugmentations() functionality and add metadata support

- Fix listAugmentations() to return actual augmentation data instead of empty array
- Add category and description metadata to BaseAugmentation class
- Add getInfo() method to AugmentationRegistry for detailed augmentation listing
- Update augmentation classes with proper categorization (internal/core/premium)
- Enhance augmentation discovery and management capabilities

This fixes the broken augmentation listing API and provides better visibility
into installed augmentations with their status and metadata.

src/brainyData.ts

@@ -8309,7 +8309,13 @@ export class BrainyData<T = any> implements BrainyDataInterface<T> {
     enabled: boolean
     description: string
   }> {
-    return augmentationPipeline.listAugmentationsWithStatus()
+    // Use the real augmentation registry instead of deprecated pipeline
+    return this.augmentations.getInfo().map(aug => ({
+      name: aug.name,
+      type: aug.category, // Map category to type for backward compatibility
+      enabled: aug.enabled,
+      description: aug.description
+    }))
   }
 
   /**