Server team shipped strict PROTOCOL_VERSION enforcement (c05ff7b),
1-indexed verb priorities, and "Observe" label for ExamineNpc.
Updates all test snapshots to include version: 4, fixes sim_bridge
test mode priorities (0-indexed → 1-indexed) and labels, replaces
v1 backward-compat tests with strict version rejection tests.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>