SAFETY-78 review: card truth while the drain waits, more checks

- homeview: no "This one does not charge" while the draining battery waits
  (no floor then, so the other battery may charge from solar).
- test_safety78: one wait line across a probe, a second episode logs again,
  the card while waiting, and a seeded sweep of the floor against every
  other claim (part 6).
- DECISIONS: the wait case, and the measured N=1 peak and N=2 charge
  follow-ups.

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

goodwe_controller/app/homeview.py

@@ -641,10 +641,13 @@ def battery_rows(c, shadow, running, held=False):
         other = next((o.name for o in c.inverters if o is not inv
                       and refusing(c, o) > 0 and not _off(c, o)), None)
         # SAFETY-78: another battery drains for its monthly cycle, so this
-        # one never charges now.
+        # one never charges now. Not while that drain waits: it files no
+        # floor then, so this battery may charge from solar.
+        waits = getattr(c, "_drain_waits", ())
         cycling = next((o.name for j, o in enumerate(c.inverters)
                         if o is not inv and j < len(c.maints)
-                        and c.maints[j].phase == M_DRAIN), None)
+                        and c.maints[j].phase == M_DRAIN
+                        and o.name not in waits), None)
         role = None if tick is None else tick.roles.get(inv.name)
         # Only once a cycle has run with modes on (`tick`): before that
         # nothing is known, so nothing is claimed about the prices.