Refactor CLI and UI into modular packages, add registry scrutiny

Major refactoring:
- Split cli.py (1465 lines) into cli/ package with 6 modules
- Split ui_urwid.py (2313 lines) into ui_urwid/ package with 4 modules
- Maintain backwards compatibility via thin wrapper modules

New features:
- Add tool scrutiny system for registry publishing (honesty, transparency, scope, efficiency checks)
- Add optimization suggestions for AI calls that could be pure code

Bug fixes:
- Fix variable substitution escaping ({{literal}} now works)
- Fix provider command parsing with shlex for quoted paths
- Add error logging even without --verbose flag

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

Co-Authored-By: Claude Opus 4.5 <[email protected]>

README.md

@@ -554,7 +554,16 @@ smarttools providers test claude
 
 ## Links
 
+### User Documentation
 - [Installation Guide](docs/INSTALL.md)
 - [Provider Setup](docs/PROVIDERS.md)
 - [Example Tools](docs/EXAMPLES.md)
+- [User Wiki](wiki/Home.md)
+
+### Developer Documentation
+- [Project Overview](docs/PROJECT.md) - Start here to understand the codebase
 - [Design Document](docs/DESIGN.md)
+- [Registry API Design](docs/REGISTRY.md)
+- [Web UI Design](docs/WEB_UI.md)
+- [Deployment Guide](docs/DEPLOYMENT.md)
+- [Architecture Diagrams](docs/diagrams/)