chore(simulation): regenerate msgpack fixtures for protocol v16

Updates all client-side msgpack test fixtures and server test
harnesses to include the new triangle_crisis_events field added
in protocol v16.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/tests/gen_fixtures.rs

@@ -48,6 +48,7 @@ fn fixture_snapshot(tick: u64, entities: Vec<VisibleEntity>) -> ObserverSnapshot
         examine_result: None,
         player_knowledge: None,
         save_result: None,
+        triangle_crisis_events: vec![],
     }
 }
 
@@ -239,6 +240,7 @@ fn generate_msgpack_fixtures() {
         examine_result: None,
         player_knowledge: None,
         save_result: None,
+        triangle_crisis_events: vec![],
     };
     write_fixture(
         "snapshot_v2_full",
@@ -400,6 +402,7 @@ fn generate_msgpack_fixtures() {
                 acquired_tick: 10,
             }],
         }),
+        triangle_crisis_events: vec![],
     };
     write_fixture(
         "snapshot_full",