The proof encoded move-writes-facing ('Move West -> now facing West'); under
D-252 the view changes only via SetFacing, so the test now looks West
explicitly (helper gains an action_data passthrough). The +2-tick wait could
catch the facing flip before the visibility recompute — the assertion now
polls (bounded) until the westward cone content lands.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>