Add power stats and generator control visibility

src/reactor_sim/constants.py

@@ -25,6 +25,8 @@ GENERATOR_SPOOL_TIME = 10.0  # seconds to reach full output
 # Auxiliary power assumptions
 PUMP_POWER_MW = 12.0  # MW draw per pump unit
 BASE_AUX_LOAD_MW = 5.0  # control, instrumentation, misc.
+NORMAL_CORE_POWER_MW = 3_000.0
+TEST_MAX_POWER_MW = 4_000.0
 # Threshold inventories (event counts) for flagging common poisons in diagnostics.
 KEY_POISON_THRESHOLDS = {
     "Xe": 1e20,  # xenon