diff --git a/CONTEXT_NOTES.md b/CONTEXT_NOTES.md
index 7840445..e9c33d8 100644
--- a/CONTEXT_NOTES.md
+++ b/CONTEXT_NOTES.md
@@ -9,3 +9,13 @@
 - Thermal updates: primary/secondary inlet temps now back-computed; when secondary flow is near zero, loops cool toward ambient over time.
 - Meltdown threshold: 2873 K. Auto rod control clears shutdown when set to auto and adjusts rods. Control rod worth/tuning currently unchanged.
 - Tests: `pytest` passing after all changes. Key regression additions include generator manual mode, turbine no-steam output, auto rod control, and passive cool-down.
+- Coolant demand fixed: demand increases when primary outlet is above target (sign was flipped before), so hot loops ramp flow instead of backing off.
+- Pump spin-down: pressure/flow ramp down over pump spool time with STOPPING->OFF threshold at 0.1 kg/s; prevents instant drop when last pump stops.
+- Steam pressure display shows 0 unless steam quality ≥0.05 and flow ≥100 kg/s to avoid showing pump head as steam pressure.
+- Passive cool-down: when secondary flow ~0, loops cool toward ambient; primary inlet/outlet back-propagated from transferred heat and ambient.
+- Relief valves: l (primary) and ; (secondary) clamp loop pressure to saturation when open; status displayed per loop.
+- Generator behavior: starting/running only produce power when load is present; auto off by default; manual toggles b/v; auto stops with no load; base aux drops to 0 when idle/cold.
+- Pressure tying: loop pressure floors to saturation(temp) when pumps off; pump targets aim for ~7 MPa nominal RBMK-like setpoints.
+- Turbines: require meaningful steam flow/quality; otherwise zero output. Steam supply pressure in turbine panel reads 0 when no steam.
+- Rod control now supports three banks with weighted worth; xenon/iodine tracked with decay and burn-out; new UA·ΔT_lm steam-generator model and pump head/flow curves.
+- Dashboard shows heat-exchanger ΔT/efficiency and protections; pumps and HX changes documented in FEATURES.md / TODO.md.