/cleanup

Clean up code, remove dead code, and optimize project structure

# /gd:cleanup - Code and Project Cleanup

## Purpose
Systematically clean up code, remove dead code, optimize imports, and improve project structure.

## Usage


## Arguments
- `target` - Files, directories, or entire project to clean
- `--type` - Cleanup type (code, imports, files, all)
- `--safe` - Conservative cleanup (default)
- `--aggressive` - More thorough cleanup with higher risk
- `--dry-run` - Preview changes without applying them

## Execution
1. Analyze target for cleanup opportunities
2. Identify dead code, unused imports, and redundant files
3. Create cleanup plan with risk as...