@camacho/inherit

Use when pulling/syncing/updating/absorbing changes from a branch's parent (typically main) into the current branch, or cascading parent changes through a stack of dependent branches. Triggers on "pull from main", "merge main in", "update from parent", "sync from base", "catch up to main", "absorb parent changes", "rebase onto main" (intent only — implementation uses merge), "update the stack", "/inherit", or "my branch is behind". Pairs with /isolate (forks from parent) and /ship (pushes to target).