SAFETY-128: control does not act on late Home Assistant readings

Readings that Home Assistant delivers late but still changing passed
every staleness gate, so the loop corrected again each cycle an error
its last command had already fixed (10 s late: the give run swung and
exported to -1.9 kW), and the peak guard pushed to the inverter limit
on the same late figures (OPT-34 F-2).

app/lateness.py fits how long after a power request the meter shows
it. Over 8 s the readings are late: a request the battery reading has
not answered holds the loop (it may not lead the reading by more than
100 W) and caps the peak guard at what stands; unanswered for 23 s it
holds, then 0 W after stale_input_s. An amber row and one log line per
episode say so. With readings on time nothing changes (digests equal).

DECISIONS/SAFETY-128-late-readings.md; test_safety128.py.

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

goodwe_controller/test_safety94.py

@@ -61,6 +61,9 @@ def without_fix(fn):
     """Run `fn` with the gate's old clock and the old refusal evidence."""
     real_f, real_c = app_inverter.Freshness, app_main.compute
     real_p = app_main.REFUSED_PROGRESS_W
+    real_l = app_main.Controller._readings_late
+    # SAFETY-128: that tree had no late-readings gate either.
+    app_main.Controller._readings_late = lambda self, standing_w: None
     app_inverter.Freshness = Before94
     app_main.compute = lambda *a, **k: real_c(*a, **dict(k, gave_nothing=None))
     app_main.REFUSED_PROGRESS_W = float("inf")
@@ -69,6 +72,7 @@ def without_fix(fn):
     finally:
         app_inverter.Freshness, app_main.compute = real_f, real_c
         app_main.REFUSED_PROGRESS_W = real_p
+        app_main.Controller._readings_late = real_l
 
 
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