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>

docs/guides/model-loading.md

@@ -302,7 +302,7 @@ const response = await openai.embeddings.create({
 // After: Local Brainy embeddings
 const brain = new BrainyData()
 await brain.init() // One-time setup
-const id = await brain.add("Your text") // Embedded automatically
+const id = await brain.addNoun("Your text", 'content') // Embedded automatically
 ```
 
 ### From Sentence Transformers