feat: add realtime dashboard control

src/reactor_sim/simulation.py

@@ -75,8 +75,20 @@ def main() -> None:
     sim = ReactorSimulation(reactor, timestep=5.0, duration=duration, realtime=realtime)
     load_path = os.getenv("FISSION_LOAD_STATE")
     save_path = os.getenv("FISSION_SAVE_STATE")
+    dashboard_mode = os.getenv("FISSION_DASHBOARD", "0") == "1"
     if load_path:
         sim.start_state = reactor.load_state(load_path)
+    if dashboard_mode:
+        from .dashboard import ReactorDashboard
+
+        dashboard = ReactorDashboard(
+            reactor,
+            start_state=sim.start_state,
+            timestep=sim.timestep,
+            save_path=save_path,
+        )
+        dashboard.run()
+        return
     try:
         if realtime:
             LOGGER.info("Running in real-time mode (Ctrl+C to stop)...")