Add toggleable maintenance state and status panel

tests/test_simulation.py

@@ -4,6 +4,7 @@ from pathlib import Path
 import pytest
 
 from reactor_sim import constants
+from reactor_sim.commands import ReactorCommand
 from reactor_sim.failures import HealthMonitor
 from reactor_sim.reactor import Reactor
 from reactor_sim.simulation import ReactorSimulation
@@ -79,3 +80,20 @@ def test_cold_shutdown_stays_subcritical():
         reactor.step(state, dt=1.0)
     assert state.core.power_output_mw <= initial_power + 0.5
     assert reactor.shutdown is True
+
+
+def test_toggle_maintenance_progresses_until_restored():
+    reactor = Reactor.default()
+    reactor.primary_pump_active = False
+    pump = reactor.health_monitor.component("primary_pump")
+    pump.integrity = 0.2
+
+    def provider(t: float, _state):
+        if t == 0:
+            return ReactorCommand.maintain("primary_pump")
+        return None
+
+    sim = ReactorSimulation(reactor, timestep=1.0, duration=50.0, command_provider=provider)
+    sim.log()
+    assert pump.integrity >= 0.99
+    assert "primary_pump" not in reactor.maintenance_active