feat: implement comprehensive type safety system with BrainyTypes API

Major enhancements for type safety and developer experience:

- Add BrainyTypes static API for type management and AI-powered suggestions
- Implement strict type validation for all 31 NounType categories
- Remove dangerous generic add() method that bypassed type safety
- Add intelligent type inference with confidence scoring
- Provide helpful error messages with typo suggestions using Levenshtein distance
- Update all internal code, examples, and documentation to use typed methods
- Enhance CLI with new type management commands (types, suggest, validate)

Breaking changes:
- Remove deprecated add() method - use addNoun() with explicit type parameter
- All addNoun() calls now require explicit type as second parameter

This release significantly improves type safety across the entire system while
maintaining backward compatibility for properly typed method calls.

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

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

src/storage/adapters/fileSystemStorage.ts

@@ -534,7 +534,7 @@ export class FileSystemStorage extends BaseStorage {
   /**
    * Save noun metadata to storage
    */
-  public async saveNounMetadata(id: string, metadata: any): Promise<void> {
+  protected async saveNounMetadata_internal(id: string, metadata: any): Promise<void> {
     await this.ensureInitialized()
 
     const filePath = path.join(this.nounMetadataDir, `${id}.json`)
@@ -562,7 +562,7 @@ export class FileSystemStorage extends BaseStorage {
   /**
    * Save verb metadata to storage
    */
-  public async saveVerbMetadata(id: string, metadata: any): Promise<void> {
+  protected async saveVerbMetadata_internal(id: string, metadata: any): Promise<void> {
     await this.ensureInitialized()
 
     const filePath = path.join(this.verbMetadataDir, `${id}.json`)

src/storage/adapters/memoryStorage.ts

@@ -531,9 +531,9 @@ export class MemoryStorage extends BaseStorage {
   }
 
   /**
-   * Save noun metadata to storage
+   * Save noun metadata to storage (internal implementation)
    */
-  public async saveNounMetadata(id: string, metadata: any): Promise<void> {
+  protected async saveNounMetadata_internal(id: string, metadata: any): Promise<void> {
     this.nounMetadata.set(id, JSON.parse(JSON.stringify(metadata)))
   }
 
@@ -550,9 +550,9 @@ export class MemoryStorage extends BaseStorage {
   }
 
   /**
-   * Save verb metadata to storage
+   * Save verb metadata to storage (internal implementation)
    */
-  public async saveVerbMetadata(id: string, metadata: any): Promise<void> {
+  protected async saveVerbMetadata_internal(id: string, metadata: any): Promise<void> {
     this.verbMetadata.set(id, JSON.parse(JSON.stringify(metadata)))
   }
 

src/storage/adapters/opfsStorage.ts

@@ -666,7 +666,7 @@ export class OPFSStorage extends BaseStorage {
   /**
    * Save verb metadata to storage
    */
-  public async saveVerbMetadata(id: string, metadata: any): Promise<void> {
+  protected async saveVerbMetadata_internal(id: string, metadata: any): Promise<void> {
     await this.ensureInitialized()
 
     const fileName = `${id}.json`
@@ -703,7 +703,7 @@ export class OPFSStorage extends BaseStorage {
   /**
    * Save noun metadata to storage
    */
-  public async saveNounMetadata(id: string, metadata: any): Promise<void> {
+  protected async saveNounMetadata_internal(id: string, metadata: any): Promise<void> {
     await this.ensureInitialized()
 
     const fileName = `${id}.json`

src/storage/adapters/s3CompatibleStorage.ts

@@ -1880,7 +1880,7 @@ export class S3CompatibleStorage extends BaseStorage {
   /**
    * Save verb metadata to storage
    */
-  public async saveVerbMetadata(id: string, metadata: any): Promise<void> {
+  protected async saveVerbMetadata_internal(id: string, metadata: any): Promise<void> {
     await this.ensureInitialized()
 
     try {
@@ -1970,7 +1970,7 @@ export class S3CompatibleStorage extends BaseStorage {
   /**
    * Save noun metadata to storage
    */
-  public async saveNounMetadata(id: string, metadata: any): Promise<void> {
+  protected async saveNounMetadata_internal(id: string, metadata: any): Promise<void> {
     await this.ensureInitialized()
 
     try {

src/storage/baseStorage.ts

@@ -5,6 +5,8 @@
 
 import { GraphVerb, HNSWNoun, HNSWVerb, StatisticsData } from '../coreTypes.js'
 import { BaseStorageAdapter } from './adapters/baseStorageAdapter.js'
+import { validateNounType, validateVerbType } from '../utils/typeValidation.js'
+import { NounType, VerbType } from '../types/graphTypes.js'
 
 // Common directory/prefix names
 // Option A: Entity-Based Directory Structure
@@ -81,6 +83,11 @@ export abstract class BaseStorage extends BaseStorageAdapter {
    */
   public async saveNoun(noun: HNSWNoun): Promise<void> {
     await this.ensureInitialized()
+    // Validate noun type before saving - storage boundary protection
+    const metadata = await this.getNounMetadata(noun.id)
+    if (metadata?.noun) {
+      validateNounType(metadata.noun)
+    }
     return this.saveNoun_internal(noun)
   }
 
@@ -116,6 +123,11 @@ export abstract class BaseStorage extends BaseStorageAdapter {
   public async saveVerb(verb: GraphVerb): Promise<void> {
     await this.ensureInitialized()
     
+    // Validate verb type before saving - storage boundary protection
+    if (verb.verb) {
+      validateVerbType(verb.verb)
+    }
+    
     // Extract the lightweight HNSWVerb data
     const hnswVerb: HNSWVerb = {
       id: verb.id,
@@ -635,7 +647,19 @@ export abstract class BaseStorage extends BaseStorageAdapter {
    * Save noun metadata to storage
    * This method should be implemented by each specific adapter
    */
-  public abstract saveNounMetadata(id: string, metadata: any): Promise<void>
+  public async saveNounMetadata(id: string, metadata: any): Promise<void> {
+    // Validate noun type in metadata - storage boundary protection
+    if (metadata?.noun) {
+      validateNounType(metadata.noun)
+    }
+    return this.saveNounMetadata_internal(id, metadata)
+  }
+
+  /**
+   * Internal method for saving noun metadata
+   * This method should be implemented by each specific adapter
+   */
+  protected abstract saveNounMetadata_internal(id: string, metadata: any): Promise<void>
 
   /**
    * Get noun metadata from storage
@@ -647,7 +671,19 @@ export abstract class BaseStorage extends BaseStorageAdapter {
    * Save verb metadata to storage
    * This method should be implemented by each specific adapter
    */
-  public abstract saveVerbMetadata(id: string, metadata: any): Promise<void>
+  public async saveVerbMetadata(id: string, metadata: any): Promise<void> {
+    // Validate verb type in metadata - storage boundary protection
+    if (metadata?.verb) {
+      validateVerbType(metadata.verb)
+    }
+    return this.saveVerbMetadata_internal(id, metadata)
+  }
+
+  /**
+   * Internal method for saving verb metadata
+   * This method should be implemented by each specific adapter
+   */
+  protected abstract saveVerbMetadata_internal(id: string, metadata: any): Promise<void>
 
   /**
    * Get verb metadata from storage