feat: add node: protocol to all Node.js built-in imports for bundler compatibility

- Updated all fs, path, crypto, os, url, util, events, http, https, net, child_process, stream, and zlib imports
- Changed both static imports and dynamic imports to use node: protocol
- This makes Brainy more bundler-friendly by explicitly marking Node.js built-ins
- Prevents bundlers from attempting to polyfill or bundle these modules
- Reduces bundle size for web applications using Brainy
- Improves tree-shaking and dead code elimination

Benefits for external bundlers:
- Clear distinction between Node.js built-ins and external dependencies
- No ambiguity about what needs polyfilling
- Smaller bundles for browser builds
- Better compatibility with modern bundlers (Webpack 5, Vite, Rollup, esbuild)

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

src/augmentations/apiServerAugmentation.ts

@@ -115,7 +115,7 @@ export class APIServerAugmentation extends BaseAugmentation {
       const express = await import('express').catch(() => null)
       const cors = await import('cors').catch(() => null)
       const ws = await import('ws').catch(() => null)
-      const { createServer } = await import('http')
+      const { createServer } = await import('node:http')
       
       if (!express || !cors || !ws) {
         this.log('Express, cors, or ws not available. Install with: npm install express cors ws', 'error')