Dev and simulator fixes

- Export ParameterEnum from __init__
- Add flask and numpy to dev dependencies
- Fix sim: remove run() call from test fixture, handle WEBSERVER_LIST_VARIABLES and WEBSERVER_BATCH_GET, normalize variable names to uppercase
- Remove RODS params from sim state (no longer part of sim model)

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

test/test_sim.py

@@ -6,7 +6,6 @@ from nucon.sim import NuconSimulator, OperatingState
 @pytest.fixture(scope="module")
 def simulator_setup():
     simulator = NuconSimulator(port=8786)
-    simulator.run()
     time.sleep(1)  # Give the simulator time to start
     nucon = Nucon(port=8786)
     return simulator, nucon