dsh-sandbox-permissions-not-strictly-wider-justification-empty-fix: Fix Sandbox Permissions and Empty Justification Validation Issues

This plugin fixes validation errors caused by an empty `justification` when the DSH agent operates in `danger-full-access` mode. By updating schema descriptions and runtime normalization mechanisms, it prevents the model from sending invalid parameters. The plugin supports automatic detection and patching of tools such as `pwsh` and `bash`. Installation must use the official command, and uninstallation first requires running a script to restore the original files. It is applicable to all non-default models and high-risk mode scenarios.