feat: add neural extraction APIs with NounType taxonomy

Add brain.extract() and brain.extractConcepts() methods that use
NeuralEntityExtractor with embeddings and sophisticated NounType
taxonomy (30+ entity types) for semantic entity and concept extraction.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

src/augmentations/defaultAugmentations.ts

@@ -14,7 +14,6 @@ import { CacheAugmentation } from './cacheAugmentation.js'
 import { MetricsAugmentation } from './metricsAugmentation.js'
 import { MonitoringAugmentation } from './monitoringAugmentation.js'
 import { UniversalDisplayAugmentation } from './universalDisplayAugmentation.js'
-import { KnowledgeAugmentation } from './KnowledgeAugmentation.js'
 
 /**
  * Create default augmentations for zero-config operation
@@ -29,7 +28,6 @@ export function createDefaultAugmentations(
     metrics?: boolean | Record<string, any>
     monitoring?: boolean | Record<string, any>
     display?: boolean | Record<string, any>
-    knowledge?: boolean | Record<string, any>
   } = {}
 ): BaseAugmentation[] {
   const augmentations: BaseAugmentation[] = []
@@ -56,19 +54,14 @@ export function createDefaultAugmentations(
 
   // Monitoring augmentation (was HealthMonitor)
   // Only enable by default in distributed mode
-  const isDistributed = process.env.BRAINY_MODE === 'distributed' || 
+  const isDistributed = process.env.BRAINY_MODE === 'distributed' ||
                         process.env.BRAINY_DISTRIBUTED === 'true'
-  
+
   if (config.monitoring !== false && (config.monitoring || isDistributed)) {
     const monitoringConfig = typeof config.monitoring === 'object' ? config.monitoring : {}
     augmentations.push(new MonitoringAugmentation(monitoringConfig))
   }
 
-  // Knowledge Layer augmentation for VFS intelligence
-  if (config.knowledge !== false) {
-    augmentations.push(new KnowledgeAugmentation() as any)
-  }
-
   return augmentations
 }