SAFETY-119 round 2: one settle window per run of hand-backs

A hand-back used to restart the window, so a guard and a charge taking
turns hid the loop's integrator bound for good (0 warnings in 2 h; 28
before the fix). A run of hand-backs (the wire away less than a settle
between them) now hides the bound for at most 11 bound cycles and 22 s in
all, then it counts. The quarter-edge kick stays hidden. No command or text
changes. Tests for the two reviewer mutants that only unit checks caught
(a restart counted as a hand-back; span only), DECISIONS gives the delay at
2 s, 5 s and 60 s. test_safety87.py:543 shortened.

Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Bdqr7PiaHcBnzPituu2yTC

goodwe_controller/test_safety87.py

@@ -540,8 +540,9 @@ _now = s87.digests()
 for k in PINNED:
     print(f"    {k} {'same' if _now[k] == PINNED[k] else 'DIFFERS'}")
 check("⭐ every N=1 digest (claims, commands, the guard's decision and the "
-      "log) equals b8ddfd7's (the log as re-pinned by SAFETY-119), under, crossing and above the reserve, in a "
-      "charge and a HOLD, and under a banked peak",
+      "log) equals b8ddfd7's (the log as re-pinned by SAFETY-119), under, "
+      "crossing and above the reserve, in a charge and a HOLD, and under a "
+      "banked peak",
       _now == PINNED)
 
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