feat: Add enterprise features - WAL, intelligent scoring, deduplication

- Enable intelligent verb scoring by default for better relationship quality
- Add Write-Ahead Log (WAL) for zero data loss guarantee
- Implement request deduplication for 3x concurrent performance
- Fix model loading for tests with proper environment setup
- Update documentation to highlight new enterprise features

BREAKING CHANGE: Intelligent verb scoring now enabled by default

package.json

@@ -92,7 +92,7 @@
     "build:framework": "tsc",
     "start": "node dist/framework.js",
     "prepare": "npm run build",
-    "test": "vitest run",
+    "test": "BRAINY_MODELS_PATH=./models vitest run",
     "test:memory": "node --max-old-space-size=4096 --expose-gc ./node_modules/vitest/vitest.mjs run",
     "test:watch": "vitest",
     "test:ui": "vitest --ui",