Full classical operator in scripts/reactor_control.py: rod control with
criticality feedforward, per-train MSCV/pump management, grid-demand
following with proportional cap distribution, pressurizer spray valve,
condenser and retention tank aux controllers, and a live curses TUI with
keyboard-driven target/setpoint adjustment.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
