Add minimal comment style guidelines

Document preference for:
- Minimal comments (code should be self-documenting)
- No decorative comment blocks
- Only comment non-obvious logic

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

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

CLAUDE.md

@@ -10,6 +10,11 @@
 - Small, focused functions
 - Follow existing patterns in src/
 
+## Code Style
+- Minimal comments - code should be self-documenting
+- No decorative comment blocks (===, ---, etc.)
+- Only comment non-obvious logic
+
 ## Common Commands
 - Build: make
 - Run: ./orbit_sim [config_file]