Add CLAUDE.md - AI agent instructions for module development

Created comprehensive anti-hallucination documentation:
- EXACT file templates with full code examples
- Precise naming conventions (PascalCase, snake_case, kebab-case)
- Step-by-step module creation checklist
- Common mistakes to avoid section
- Filament form/table component reference
- Debugging commands and troubleshooting
- Updated AI_CONTEXT.md and README.md to reference CLAUDE.md

AI_CONTEXT.md

@@ -1,5 +1,8 @@
 # AI Assistant Context
 
+> **🚨 CRITICAL: For detailed module development instructions, see [CLAUDE.md](CLAUDE.md)**
+> That document contains EXACT file templates, naming conventions, and step-by-step instructions.
+
 This document provides context for AI coding assistants working on projects built with this template.
 
 ## Template Overview
@@ -331,6 +334,7 @@ make restore file=...      # Restore database
 
 ## Documentation Links
 
+- **[CLAUDE.md](CLAUDE.md)** - 🚨 **AI AGENTS: START HERE** - Exact module templates
 - [GETTING_STARTED.md](GETTING_STARTED.md) - Setup walkthrough
 - [README.md](README.md) - Overview
 - [docs/modules.md](docs/modules.md) - Module system