feat: add kaizen-agentic as submodule capability

- Add kaizen-agentic submodule from coulomb/kaizen-agentic repository
- Integrate as capabilities/kaizen-agentic/ following capability inclusion pattern
- Update CAPABILITY_REGISTRY.md with new AI agent framework capability
- Update CAPABILITY_INCLUSION_GUIDE.md directory structure
- Update capability metrics: 5 total capabilities, 3 submodules
- Establish kaizen-agentic integration pattern: cd capabilities/kaizen-agentic && make [command]

Extends capability inclusion architecture with:
- Advanced AI agent framework for autonomous development workflows
- Agent definitions, workflow automation, development patterns
- Clear separation from internal MarkiTect functionality

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

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

.gitmodules

@@ -5,3 +5,6 @@
 [submodule "capabilities/issue-facade"]
 	path = capabilities/issue-facade
 	url = http://92.205.130.254:32166/coulomb/issue-facade.git
+[submodule "capabilities/kaizen-agentic"]
+	path = capabilities/kaizen-agentic
+	url = http://92.205.130.254:32166/coulomb/kaizen-agentic.git