refactor: remove augmentation system and semantic type matching

Remove the entire augmentation pipeline infrastructure (52 files,
~15,000 lines) and the semantic type matching system. These were
unused middleware layers adding complexity without value.

What was removed:
- src/augmentations/ directory (all augmentation implementations)
- src/augmentationManager.ts (pipeline orchestrator)
- src/types/augmentations.ts, src/types/pipelineTypes.ts
- src/shared/default-augmentations.ts
- Semantic type suggestion (BrainyTypes.suggestNoun/suggestVerb)
- src/utils/typeMatching/ (embedding-based type matcher)

What was preserved by relocating:
- Import handlers (CSV, PDF, Excel) -> src/importers/handlers/
- NeuralImportAugmentation -> src/cortex/neuralImportAugmentation.ts
- Type matching utilities -> heuristic inference in consumers

What was simplified:
- brainy.ts: operations call storage directly (no execute() wrapper)
- IntegrationBase: standalone class (no BaseAugmentation parent)
- BrainyTypes: validation-only (nouns, verbs, isValid*, get*)
- Pipeline: direct execution (no augmentation interception)
- index.ts: removed TypeSuggestion, suggestType exports
- package.json: removed stale types/augmentations export

Build passes, 1176 tests pass, 0 failures.

examples/tests/instant-validation.js

@@ -49,11 +49,8 @@ try {
   test('Memory storage configured', brain.storage && brain.storage.storageType === 'memory')
   
   console.log('\n📊 API Architecture Validation:')
-  
-  // Test 5: Augmentation system structure
-  test('Augmentations system exists', brain.augmentations !== undefined)
-  
-  // Test 6: Core properties exist  
+
+  // Test 5: Core properties exist
   test('Index system exists', brain.index !== undefined)
   test('Storage system exists', brain.storage !== undefined)
   

examples/tests/test-storage-augmentation.js

@@ -1,89 +0,0 @@
-/**
- * Test script to verify storage augmentation system works
- */
-
-import { Brainy } from '../../dist/index.js'
-import { 
-  MemoryStorageAugmentation,
-  FileSystemStorageAugmentation 
-} from './dist/augmentations/storageAugmentations.js'
-
-console.log('🧪 Testing Storage Augmentation System')
-console.log('=' .repeat(50))
-
-async function test1_ZeroConfig() {
-  console.log('\n1. Zero-Config Test')
-  const brain = new Brainy()
-  await brain.init()
-  
-  await brain.add('test', { content: 'Zero-config test' })
-  const results = await brain.search('test', { limit: 1 })
-  
-  console.log('✅ Zero-config works:', results.length > 0)
-  await brain.destroy()
-}
-
-async function test2_ConfigBased() {
-  console.log('\n2. Config-Based Storage Test')
-  const brain = new Brainy({
-    storage: {
-      forceMemoryStorage: true
-    }
-  })
-  await brain.init()
-  
-  await brain.add('config test', { content: 'Config-based test' })
-  const results = await brain.search('config', { limit: 1 })
-  
-  console.log('✅ Config-based works:', results.length > 0)
-  await brain.destroy()
-}
-
-async function test3_AugmentationOverride() {
-  console.log('\n3. Augmentation Override Test')
-  const brain = new Brainy()
-  
-  // Register storage augmentation BEFORE init
-  brain.augmentations.register(new MemoryStorageAugmentation('test-memory'))
-  
-  await brain.init()
-  
-  await brain.add('augmentation test', { content: 'Augmentation override test' })
-  const results = await brain.search('augmentation', { limit: 1 })
-  
-  console.log('✅ Augmentation override works:', results.length > 0)
-  await brain.destroy()
-}
-
-async function test4_BackwardCompatibility() {
-  console.log('\n4. Backward Compatibility Test')
-  
-  // Old style with rootDirectory config
-  const brain = new Brainy({
-    storage: {
-      rootDirectory: './test-data',
-      forceFileSystemStorage: true
-    }
-  })
-  
-  await brain.init()
-  console.log('✅ Backward compatible config works')
-  await brain.destroy()
-}
-
-async function runAllTests() {
-  try {
-    await test1_ZeroConfig()
-    await test2_ConfigBased()
-    await test3_AugmentationOverride()
-    await test4_BackwardCompatibility()
-    
-    console.log('\n' + '='.repeat(50))
-    console.log('✅ ALL STORAGE AUGMENTATION TESTS PASSED!')
-  } catch (error) {
-    console.error('❌ Test failed:', error)
-    process.exit(1)
-  }
-}
-
-runAllTests()