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/api/README.md

@@ -12,7 +12,7 @@ const brain = new BrainyData()  // Zero config!
 await brain.init()
 
 // Add data (text auto-embeds!)
-await brain.addNoun('The future of AI is here')
+await brain.addNoun('The future of AI is here', 'content')
 
 // Search with Triple Intelligence
 const results = await brain.find({
@@ -322,9 +322,9 @@ const articles = await brain.find({
 ### Creating Knowledge Graphs
 ```typescript
 // Add entities
-const ai = await brain.addNoun('Artificial Intelligence')
-const ml = await brain.addNoun('Machine Learning')
-const dl = await brain.addNoun('Deep Learning')
+const ai = await brain.addNoun('Artificial Intelligence', 'concept')
+const ml = await brain.addNoun('Machine Learning', 'concept')
+const dl = await brain.addNoun('Deep Learning', 'concept')
 
 // Create relationships
 await brain.addVerb(ml, ai, 'subset_of')