Tools can now declare system-level package dependencies (apt, brew, pacman, dnf)
that get checked and optionally installed when the tool is installed or run.
Features:
- SystemDependency dataclass with short form (string) and long form (dict)
- New system_deps.py module with platform detection and installation
- `cmdforge system-deps <tool>` command to check/install system packages
- `cmdforge check` now shows both CmdForge and system dependencies
- `cmdforge registry install` prompts for system dep installation
- GUI: System Dependencies section in Tool Builder with add/edit dialog
- Runner warns about missing system deps before execution
- Integration with project install (manifest and lock-based)
Also includes:
- Quote paths in wrapper scripts for spaces support
- Tests for value type preservation in code steps
- Unskip invalid tool name test
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
