feat: add universal adapters for browser compatibility

- Create universal adapters for cross-platform support (browser/Node/serverless)
- Replace Node.js-specific imports with universal implementations
- Add OPFS support for browser persistent storage
- Maintain same BrainyData interface across all environments
- Enable real Brainy usage in browser console UI
- Keep package size optimized (no bloat)

Universal adapters in /src/universal/:
- uuid.ts: Cross-platform UUID generation
- crypto.ts: Browser/Node crypto operations
- fs.ts: OPFS/FileSystem/Memory storage adapter
- path.ts: Universal path operations
- events.ts: EventEmitter compatibility layer

This enables 'write once, run anywhere' for Brainy while maintaining
the exact same API. No breaking changes to existing code.

src/augmentations/conduitAugmentations.ts

@@ -5,7 +5,7 @@ import {
   AugmentationResponse,
   WebSocketConnection
 } from '../types/augmentations.js'
-import { v4 as uuidv4 } from 'uuid'
+import { v4 as uuidv4 } from '../universal/uuid.js'
 
 /**
  * Base class for conduit augmentations that provide data synchronization between Brainy instances

src/augmentations/cortexSense.ts

@@ -8,8 +8,8 @@
 import { ISenseAugmentation, AugmentationResponse } from '../types/augmentations.js'
 import { BrainyData } from '../brainyData.js'
 import { NounType, VerbType } from '../types/graphTypes.js'
-import * as fs from 'fs/promises'
-import * as path from 'path'
+import * as fs from '../universal/fs.js'
+import * as path from '../universal/path.js'
 
 // Cortex Analysis Types
 export interface CortexAnalysisResult {

src/augmentations/serverSearchAugmentations.ts

@@ -14,7 +14,7 @@ import {
   WebSocketConnection
 } from '../types/augmentations.js'
 import { WebSocketConduitAugmentation } from './conduitAugmentations.js'
-import { v4 as uuidv4 } from 'uuid'
+import { v4 as uuidv4 } from '../universal/uuid.js'
 import { BrainyDataInterface } from '../types/brainyDataInterface.js'
 
 /**