A plugin can pass validation and still fail after install
Plugin validators check manifest compliance but do not ensure post-install functionality.
Plugin validators ensure that a manifest matches the expected schema, but they do not guarantee that the installed package contains a functioning plugin. This issue is exacerbated when targeting both Codex and Claude Code, as their requirements differ. For instance, a package might omit necessary runtime components or have mismatched release versions, leading to installation failures despite passing initial checks.