OPT-38: a kept tomorrow forecast reading stands in at any hour

One stale Forecast.Solar tomorrow sensor dropped the whole OPT-17 sum from
17:54 to 20:00. Today readings and the OPT-34 morning rules are unchanged.

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

goodwe_controller/test_opt27.py

@@ -144,8 +144,9 @@ rs(st(5.0, at(4, 9, 5)), st(12.0, at(4, 9, 5)), at(4, 9, 6), h9)
 for label, tm in (("stale", st(12.0, at(4, 9, 5))), ("unavailable", GONE)):
     fd = rs(st(3.0, at(4, 13, 55)), tm, at(4, 14, 0), h9)[0]
     check(f"14:00, today fresh, tomorrow {label} since 09:05 (over 3 h): "
-          "no tomorrow, nothing kept",
-          fd is not None and fd.tomorrow is None and not fd.kept)
+          "the 09:05 figure covers it, kept (OPT-38: at any hour)",
+          fd is not None and fd.tomorrow is not None
+          and fd.tomorrow.kwh == 12.0 and fd.kept)
     fn = rs(st(0.1, at(4, 20, 55)), tm, at(4, 21, 0), h9)[0]
     check(f"21:00, tomorrow {label}: the 09:05 figure covers it, kept",
           fn is not None and fn.tomorrow is not None