[Feature-Request] Allow calling (cahining) commands within prompt

Currently, users must execute Claude Code commands one at a time, waiting for each to complete before running the next.
Allow users to chain commands within a single prompt using command syntax, enabling automated execution of multi-step workflows.

Example Usage
commit and pr, then /compact then start /project:start-new-feature feature-name1 branch-name once you finished run /clear

This would execute:

1- Commit current changes and create a pull request
2- Run the compact command
3- Start a new feature with /project:start-new-feature feature-name1 branch-name
4- Execute /clear when the workflow completes