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/distributed/cacheSync.d.ts

@@ -0,0 +1,112 @@
+/**
+ * Distributed Cache Synchronization
+ * Provides cache coherence across multiple Brainy instances
+ */
+import { EventEmitter } from 'events';
+export interface CacheSyncConfig {
+    nodeId: string;
+    syncInterval?: number;
+    maxSyncBatchSize?: number;
+    compressionEnabled?: boolean;
+}
+export interface CacheEntry {
+    key: string;
+    value: any;
+    version: number;
+    timestamp: number;
+    ttl?: number;
+    nodeId: string;
+}
+export interface SyncMessage {
+    type: 'invalidate' | 'update' | 'delete' | 'batch';
+    entries: CacheEntry[];
+    source: string;
+    timestamp: number;
+}
+/**
+ * Distributed Cache Synchronizer
+ */
+export declare class CacheSync extends EventEmitter {
+    private nodeId;
+    private localCache;
+    private versionVector;
+    private syncQueue;
+    private syncInterval;
+    private maxSyncBatchSize;
+    private syncTimer?;
+    private isRunning;
+    constructor(config: CacheSyncConfig);
+    /**
+     * Start cache synchronization
+     */
+    start(): void;
+    /**
+     * Stop cache synchronization
+     */
+    stop(): void;
+    /**
+     * Get a value from cache
+     */
+    get(key: string): any | undefined;
+    /**
+     * Set a value in cache and propagate
+     */
+    set(key: string, value: any, ttl?: number): void;
+    /**
+     * Delete a value from cache and propagate
+     */
+    delete(key: string): boolean;
+    /**
+     * Invalidate a cache entry across all nodes
+     */
+    invalidate(key: string): void;
+    /**
+     * Clear all cache entries
+     */
+    clear(): void;
+    /**
+     * Handle incoming sync message from another node
+     */
+    handleSyncMessage(message: SyncMessage): void;
+    /**
+     * Handle a remote cache entry
+     */
+    private handleRemoteEntry;
+    /**
+     * Queue a sync message
+     */
+    private queueSync;
+    /**
+     * Start sync timer
+     */
+    private startSyncTimer;
+    /**
+     * Perform sync operation
+     */
+    private performSync;
+    /**
+     * Increment version for a key
+     */
+    private incrementVersion;
+    /**
+     * Get cache statistics
+     */
+    getStats(): {
+        entries: number;
+        pendingSync: number;
+        versionedKeys: number;
+        memoryUsage: number;
+    };
+    /**
+     * Get cache entries for debugging
+     */
+    getEntries(): CacheEntry[];
+    /**
+     * Merge cache state from another node (for recovery)
+     */
+    mergeState(entries: CacheEntry[]): void;
+}
+/**
+ * Create a cache sync instance
+ */
+export declare function createCacheSync(config: CacheSyncConfig): CacheSync;