SAFETY-52 review: a refusal is under 100 W, and any delivery ends it

- Engage (and seed from a stale stop) below REFUSED_BELOW_W, the probe's
  own 100 W answer, not below saturation_w: a battery derated to 100-499 W
  was held at 0 W ~93 % of the time.
- A reading of 100 W or more in the held direction ends the refusal, probe
  or not: at a 1 s meter SETTLE_CYCLES is 12 s, shorter than a healthy
  reading's lag, and that held a healthy step at 0 W until the next probe.
- test_refusal part 5b and a seed test; DOCS states the N>1 limit; the
  DECISIONS record carries the traced cause of the replay's extra trips.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

goodwe_controller/tools/replay_refusal.py

@@ -43,7 +43,7 @@ def go(which, rows, fit, publish_s=10.0, stale_input_s=15.0):
         if fr.stale and not was:
             trips += 1
             if (which == "new" and not st["ref"] and st["sat"] >= tun.saturation_cycles
-                    and abs(reg) < tun.saturation_w and abs(st["target"]) > tun.saturation_w):
+                    and abs(reg) < NEW.REFUSED_BELOW_W and abs(st["target"]) > tun.saturation_w):
                 st["ref"], st["anchor"] = (1 if st["target"] > 0 else -1), t
         was = fr.stale
         if batt is None: