Under the hood
Plugin hooks now report a tier of core, prepend, or user
What
When Claude Code looks up plugin hooks (scripts that run automatically at certain points), the result now includes a tier field, computed as "core", "prepend", or otherwise "user". Plugin hook metadata now carries {plugin, tier, hook, generation} instead of just {plugin, hook, generation}.
Why
This lets Claude Code distinguish hooks that are built-in ("core"), inserted ahead of others ("prepend"), or defined by the user, which likely matters for how hooks are ordered or prioritized when several apply.