There is a solution that's already in use in the Python ecosystem (PyPI). Python projects have a classifiers field. Development status is one of the main types of classifiers. It has 7 stages starting from 'Planning' and ending in 'Inactive'. Honestly, this solution is elegant and simple to implement.
We could an issue for code forges including github to implement it such that it is shown as project metadata along side license, language, etc. Perhaps the project can be automatically marked as inactive if the maintainer(s) don't respond every 3 months or so (of course with provision to easily revert it).
We could an issue for code forges including github to implement it such that it is shown as project metadata along side license, language, etc. Perhaps the project can be automatically marked as inactive if the maintainer(s) don't respond every 3 months or so (of course with provision to easily revert it).
[1] https://pypi.org/classifiers/