Show boron and measured power on dashboard

src/reactor_sim/dashboard.py

@@ -425,6 +425,8 @@ class ReactorDashboard:
                 ("Rod Mode", "AUTO" if not self.reactor.control.manual_control else "MANUAL"),
                 ("Setpoint", f"{self.reactor.control.setpoint_mw:7.0f} MW"),
                 ("Reactivity", f"{state.core.reactivity_margin:+.4f}"),
+                ("Boron", f"{state.boron_ppm:7.1f} ppm"),
+                ("P(meas)", f"{self._measured_power(state):6.1f} MW"),
             ],
         )
         left_y = self._draw_section(
@@ -800,6 +802,14 @@ class ReactorDashboard:
             enthalpy_kjkg = (constants.STEAM_LATENT_HEAT / 1_000.0)
         return (enthalpy_kjkg * mass_flow) / 1_000.0
 
+    def _measured_power(self, state: PlantState) -> float:
+        ctl = getattr(self, "reactor", None)
+        if ctl and getattr(ctl, "control", None):
+            filtered = getattr(ctl.control, "_filtered_power_mw", 0.0)
+            if filtered > 0.0:
+                return filtered
+        return state.core.power_output_mw
+
     def _desired_throttle(self, turbine_state) -> float:
         if not self.reactor.turbines:
             return 0.0