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📚 Description
Related #466
🔖 Changes
Introduced a new assert_exec helper that executes a command, captures exit status, stdout, and stderr, and validates all expectations together for concise command checks
Added unit tests demonstrating successful and failing scenarios for assert_exec, ensuring coverage of exit codes and output assertions
Documented assert_exec usage and options in the assertions guide so users can quickly adopt the new helper
Updated the changelog to highlight the new consolidated execution assertion in the unreleased notes
✅ To-do list
CHANGELOG.mdto reflect the new feature or fix