Package laundervictim is the "victim" realm in the launder-game tests. It exposes a package-level g that an attacker tries to mutate by various means. Two shapes are exposed:
- gVal is `launderpkg.Object` (value type).
- gPtr is `*launderpkg.Object` (pointer to a fresh Object).
Both are allocated at init under this realm's context, so their PkgID stamp is /r/.../laundervictim. The attacker's job is to make the stamp not match m.Realm at the write site — by laundering the stamp, capturing the value, or exploiting a borrow-rule shift.