feat: Add Google Cloud Storage CDN for models.soulcraft.com

- Primary source: models.soulcraft.com on GCS
- Backup: GitHub releases
- Fallback: Hugging Face
- Immutable with SHA256 verification

dist/brainyData.js

@@ -656,6 +656,22 @@ export class BrainyData {
             return;
         }
         this.isInitializing = true;
+        // CRITICAL: Ensure model is available before ANY operations
+        // This is THE most critical part of the system
+        // Without the model, users CANNOT access their data
+        if (typeof this.embeddingFunction === 'function') {
+            try {
+                const { modelGuardian } = await import('./critical/model-guardian.js');
+                await modelGuardian.ensureCriticalModel();
+            }
+            catch (error) {
+                console.error('🚨 CRITICAL: Model verification failed!');
+                console.error('Brainy cannot function without the transformer model.');
+                console.error('Users cannot access their data without it.');
+                this.isInitializing = false;
+                throw error;
+            }
+        }
         try {
             // Pre-load the embedding model early to ensure it's always available
             // This helps prevent issues with the Universal Sentence Encoder not being loaded

dist/utils/embedding.js

@@ -3,6 +3,7 @@
  * Complete rewrite to eliminate TensorFlow.js and use ONNX-based models
  */
 import { isBrowser } from './environment.js';
+import { ModelManager } from '../embeddings/model-manager.js';
 // @ts-ignore - Transformers.js is now the primary embedding library
 import { pipeline, env } from '@huggingface/transformers';
 /**
@@ -192,6 +193,9 @@ export class TransformerEmbedding {
         }
         // Always use real implementation - no mocking
         try {
+            // Ensure models are available (downloads if needed)
+            const modelManager = ModelManager.getInstance();
+            await modelManager.ensureModels(this.options.model);
             // Resolve device configuration and cache directory
             const device = await resolveDevice(this.options.device);
             const cacheDir = this.options.cacheDir === './models'