## Summary Create comprehensive documentation for the CI Job Inputs feature. ## Documentation scope The documentation should cover: - Overview of job inputs and their purpose - Syntax for defining job inputs in `.gitlab-ci.yml` - Supported input types - Using the `${{ job.inputs.* }}` interpolation syntax - Supported keywords where inputs can be used - Default values and variable expansion - Retrying jobs with new input values - Playing manual jobs with input values - Examples and best practices ## Related - Epic: https://gitlab.com/groups/gitlab-org/-/work_items/17833+ - Interpolation docs issue: https://gitlab.com/gitlab-org/gitlab/-/issues/577833+