feat(simulation): wire triangle escalation and crisis events into protocol

Registers tick_triangle_escalation and apply_resolve_triangle systems
in SimulationPlugin. Adds TriangleCrisisEventWire to ObserverSnapshot
(protocol v16) for future client rendering of triangle crises (#250,
D-087). Observer emits empty vec by default; escalation system will
populate when triangles reach Active phase.

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

server/src/bridge/text_renderer.rs

@@ -313,6 +313,7 @@ mod tests {
             examine_result: None,
             player_knowledge: None,
             save_result: None,
+            triangle_crisis_events: vec![],
         }
     }
 
@@ -448,6 +449,7 @@ mod tests {
             examine_result: None,
             player_knowledge: None,
             save_result: None,
+            triangle_crisis_events: vec![],
         };
         let text = format_snapshot_text(&snap);
         assert!(text.contains("Tick 0"));