Sort dependencies in composer.json by common rules

Sort items by categories:

- PHP version (if missing, use current PHP version of runtime)
- system reqs (ASC)
- packages (ASC)

If PHP version is specific version, use interval like `^8.0 <8.1`

Start by locating the code that reads, merges, or writes composer.json and check whether tests cover dependency ordering. Compare the current output with the requested PHP-version, system-requirement, and package categories, including the specified PHP interval format. Done means generated composer.json dependencies follow those rules consistently.

Written by the indexing model from the issue text.