chore: recovery checkpoint - v3.0 API successfully recovered

CRITICAL CHECKPOINT - DO NOT PUSH TO GITHUB

Recovery Status:
- Successfully recovered brainy.ts from compiled JavaScript
- All core v3.0 API methods functional (add, get, update, delete, relate, find, etc.)
- Neural subsystem intact (562KB embedded patterns, NLP working)
- Augmentation pipeline operational (20+ augmentations)
- HNSW clustering system complete
- Triple Intelligence compiled (needs constructor fix)
- Test suite validates functionality

Changes preserved:
- 898 files with changes from last 3 days
- 144,475 insertions
- All augmentation improvements
- All test coverage enhancements
- Complete v3.0 feature set

This is a LOCAL checkpoint only - contains recovered work after corruption incident.
Created backup in .backups/brainy-full-20250910-151314.tar.gz

Branch: recovery-checkpoint-20250910-151433
Date: Wed Sep 10 03:18:04 PM PDT 2025

.recovery-workspace/dist-backup-20250910-141917/embeddings/model-manager.d.ts

@@ -0,0 +1,39 @@
+/**
+ * Model Manager - Ensures transformer models are available at runtime
+ *
+ * Strategy (in order):
+ * 1. Check local cache first (instant)
+ * 2. Try Soulcraft CDN (fastest when available)
+ * 3. Try GitHub release tar.gz with extraction (reliable backup)
+ * 4. Fall back to Hugging Face (always works)
+ *
+ * NO USER CONFIGURATION REQUIRED - Everything is automatic!
+ */
+export declare class ModelManager {
+    private static instance;
+    private modelsPath;
+    private isInitialized;
+    private constructor();
+    static getInstance(): ModelManager;
+    private getModelsPath;
+    ensureModels(modelName?: string): Promise<boolean>;
+    private verifyModelFiles;
+    /**
+     * Check which model variants are available locally
+     */
+    getAvailableModels(modelName?: string): {
+        fp32: boolean;
+        q8: boolean;
+    };
+    /**
+     * Get the best available model variant based on preference and availability
+     */
+    getBestAvailableModel(preferredType?: 'fp32' | 'q8', modelName?: string): 'fp32' | 'q8' | null;
+    private tryModelSource;
+    private downloadAndExtractFromGitHub;
+    /**
+     * Pre-download models for deployment
+     * This is what npm run download-models calls
+     */
+    static predownload(): Promise<void>;
+}