UI: shift speed-limit/cruise numbers down; modeld: keep 20fps at standstill-in-drive; health: FPS instead of LAG

- onroad: speed-limit sign and cruise over/under sign — shift the number
  ~10% further down inside the inner box (adjusted top inset 42→86).
- modeld: narrow the standby condition. Previously 0fps when
  standstill-or-parked; now 0fps only when parked. Standstill in drive
  (red light) continues to run at 20fps so lateral can engage/stay
  responsive and liveCalibration/paramsd keep seeing observations.
  Ignition-off still stops modeld at the manager level.
- Health overlay: replace LAG row with FPS (modeld framerate read from
  ModelFps memory param, which modeld already writes only on standby
  transition — no per-frame writes).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

selfdrive/modeld/modeld.py

@@ -241,10 +241,12 @@ def main(demo=False):
 
     sm.update(0)
 
-    # CLEARPILOT: two-state modeld — 0fps at standstill or parked, 20fps otherwise.
-    standstill = sm['carState'].standstill
+    # CLEARPILOT: two-state modeld — 0fps only when parked (ignition-on means
+    # engine running in park; ignition-off stops modeld at the manager level).
+    # Standstill in drive (red light) keeps running so lateral stays responsive
+    # and liveCalibration/paramsd observations continue.
     parked = sm['carState'].gearShifter == car.CarState.GearShifter.park
-    should_standby = standstill or parked
+    should_standby = parked
     if should_standby and not model_standby:
       params_memory.put_bool("ModelStandby", True)
       params_memory.put("ModelFps", "0")