What are Reusable Workflows, and how do they differ from composite actions?

Reusable Workflows allow you to define a complete workflow YAML file in a central repository and call it from other workflow files across multiple repositories (using uses: owner/repo/.github/workflows/reusable.yml@v1).

• Unlike composite actions, reusable workflows run as independent jobs, can contain multiple jobs, define environment boundaries, and support their own runner configurations.
• They are triggered using the workflow_call event and accept defined inputs and secrets.