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/universal/crypto.js

@@ -0,0 +1,215 @@
+/**
+ * Universal Crypto implementation
+ * Works in all environments: Browser, Node.js, Serverless
+ */
+import { isBrowser, isNode } from '../utils/environment.js';
+let nodeCrypto = null;
+// Dynamic import for Node.js crypto (only in Node.js environment)
+if (isNode()) {
+    try {
+        nodeCrypto = await import('crypto');
+    }
+    catch {
+        // Ignore import errors in non-Node environments
+    }
+}
+/**
+ * Generate random bytes
+ */
+export function randomBytes(size) {
+    if (isBrowser() || typeof crypto !== 'undefined') {
+        // Use Web Crypto API (available in browsers and modern Node.js)
+        const array = new Uint8Array(size);
+        crypto.getRandomValues(array);
+        return array;
+    }
+    else if (nodeCrypto) {
+        // Use Node.js crypto as fallback
+        return new Uint8Array(nodeCrypto.randomBytes(size));
+    }
+    else {
+        // Fallback for environments without crypto
+        const array = new Uint8Array(size);
+        for (let i = 0; i < size; i++) {
+            array[i] = Math.floor(Math.random() * 256);
+        }
+        return array;
+    }
+}
+/**
+ * Generate random UUID
+ */
+export function randomUUID() {
+    if (typeof crypto !== 'undefined' && crypto.randomUUID) {
+        return crypto.randomUUID();
+    }
+    else if (nodeCrypto && nodeCrypto.randomUUID) {
+        return nodeCrypto.randomUUID();
+    }
+    else {
+        // Fallback UUID generation
+        return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (c) => {
+            const r = Math.random() * 16 | 0;
+            const v = c === 'x' ? r : (r & 0x3 | 0x8);
+            return v.toString(16);
+        });
+    }
+}
+/**
+ * Create hash (simplified interface)
+ */
+export function createHash(algorithm) {
+    if (nodeCrypto && nodeCrypto.createHash) {
+        return nodeCrypto.createHash(algorithm);
+    }
+    else {
+        // Simple fallback hash for browsers (not cryptographically secure)
+        let hash = 0;
+        const hashObj = {
+            update: (data) => {
+                const text = typeof data === 'string' ? data : new TextDecoder().decode(data);
+                for (let i = 0; i < text.length; i++) {
+                    const char = text.charCodeAt(i);
+                    hash = ((hash << 5) - hash) + char;
+                    hash = hash & hash; // Convert to 32-bit integer
+                }
+                return hashObj;
+            },
+            digest: (encoding) => {
+                return Math.abs(hash).toString(16);
+            }
+        };
+        return hashObj;
+    }
+}
+/**
+ * Create HMAC
+ */
+export function createHmac(algorithm, key) {
+    if (nodeCrypto && nodeCrypto.createHmac) {
+        return nodeCrypto.createHmac(algorithm, key);
+    }
+    else {
+        // Fallback HMAC implementation (simplified)
+        return createHash(algorithm);
+    }
+}
+/**
+ * PBKDF2 synchronous
+ */
+export function pbkdf2Sync(password, salt, iterations, keylen, digest) {
+    if (nodeCrypto && nodeCrypto.pbkdf2Sync) {
+        return new Uint8Array(nodeCrypto.pbkdf2Sync(password, salt, iterations, keylen, digest));
+    }
+    else {
+        // Simplified fallback (not cryptographically secure)
+        const result = new Uint8Array(keylen);
+        const passwordStr = typeof password === 'string' ? password : new TextDecoder().decode(password);
+        const saltStr = typeof salt === 'string' ? salt : new TextDecoder().decode(salt);
+        let hash = 0;
+        const combined = passwordStr + saltStr;
+        for (let i = 0; i < combined.length; i++) {
+            hash = ((hash << 5) - hash) + combined.charCodeAt(i);
+            hash = hash & hash;
+        }
+        for (let i = 0; i < keylen; i++) {
+            result[i] = (Math.abs(hash + i) % 256);
+        }
+        return result;
+    }
+}
+/**
+ * Scrypt synchronous
+ */
+export function scryptSync(password, salt, keylen, options) {
+    if (nodeCrypto && nodeCrypto.scryptSync) {
+        return new Uint8Array(nodeCrypto.scryptSync(password, salt, keylen, options));
+    }
+    else {
+        // Fallback to pbkdf2Sync
+        return pbkdf2Sync(password, salt, 10000, keylen, 'sha256');
+    }
+}
+/**
+ * Create cipher
+ */
+export function createCipheriv(algorithm, key, iv) {
+    if (nodeCrypto && nodeCrypto.createCipheriv) {
+        return nodeCrypto.createCipheriv(algorithm, key, iv);
+    }
+    else {
+        // Fallback encryption (XOR-based, not secure)
+        let encrypted = '';
+        return {
+            update: (data, inputEncoding, outputEncoding) => {
+                for (let i = 0; i < data.length; i++) {
+                    const char = data.charCodeAt(i);
+                    const keyByte = key[i % key.length];
+                    const ivByte = iv[i % iv.length];
+                    encrypted += String.fromCharCode(char ^ keyByte ^ ivByte);
+                }
+                return outputEncoding === 'hex' ? Buffer.from(encrypted, 'binary').toString('hex') : encrypted;
+            },
+            final: (outputEncoding) => {
+                return outputEncoding === 'hex' ? '' : '';
+            }
+        };
+    }
+}
+/**
+ * Create decipher
+ */
+export function createDecipheriv(algorithm, key, iv) {
+    if (nodeCrypto && nodeCrypto.createDecipheriv) {
+        return nodeCrypto.createDecipheriv(algorithm, key, iv);
+    }
+    else {
+        // Fallback decryption (XOR-based, matches createCipheriv)
+        let decrypted = '';
+        return {
+            update: (data, inputEncoding, outputEncoding) => {
+                const input = inputEncoding === 'hex' ? Buffer.from(data, 'hex').toString('binary') : data;
+                for (let i = 0; i < input.length; i++) {
+                    const char = input.charCodeAt(i);
+                    const keyByte = key[i % key.length];
+                    const ivByte = iv[i % iv.length];
+                    decrypted += String.fromCharCode(char ^ keyByte ^ ivByte);
+                }
+                return decrypted;
+            },
+            final: (outputEncoding) => {
+                return '';
+            }
+        };
+    }
+}
+/**
+ * Timing safe equal
+ */
+export function timingSafeEqual(a, b) {
+    if (nodeCrypto && nodeCrypto.timingSafeEqual) {
+        return nodeCrypto.timingSafeEqual(a, b);
+    }
+    else {
+        // Fallback implementation
+        if (a.length !== b.length)
+            return false;
+        let result = 0;
+        for (let i = 0; i < a.length; i++) {
+            result |= a[i] ^ b[i];
+        }
+        return result === 0;
+    }
+}
+export default {
+    randomBytes,
+    randomUUID,
+    createHash,
+    createHmac,
+    pbkdf2Sync,
+    scryptSync,
+    createCipheriv,
+    createDecipheriv,
+    timingSafeEqual
+};
+//# sourceMappingURL=crypto.js.map