MAINT-14: accurate no-level wording per phase; name the limit that ended the charge

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

goodwe_controller/app/maintenance.py

@@ -563,8 +563,11 @@ class Maintenance:
         if (not self._nosoc_said and (now - self._nosoc_since).total_seconds()
                 >= NOSOC_NOTE_MIN * 60):
             self._nosoc_said = True
+            tail = ("The hold waits for the level to come back."
+                    if phase == HOLD else
+                    f"The time limit of the {phase} still applies.")
             msg = (f"maintenance: no battery level for {NOSOC_NOTE_MIN} min. "
-                   f"The time limit of the {phase} still applies.")
+                   f"{tail}")
             _LOG.warning("%s", msg)
             events.append(msg)
         if phase == HOLD:
@@ -587,9 +590,12 @@ class Maintenance:
                             f"charge counts as done -> holding "
                             f"{self.cfg.hold_min} min to balance")
                 return MaintResult(HOLD, True, 0.0, False, events)
+            if elapsed > CHARGE_WALL_TIMEOUT_MIN:
+                lim = f"the {CHARGE_WALL_TIMEOUT_MIN // 1440}-day limit"
+            else:
+                lim = f"{trk['open_min'] / 60:.0f} h of charging time"
             return self._fail(now, "charge",
-                              f"charge stuck, battery level unknown, after "
-                              f"{trk['open_min'] / 60:.0f} h of charging time")
+                              f"charge stuck, battery level unknown, after {lim}")
         return MaintResult(CHARGE, False, None, True, events)
 
     def abort(self, now: datetime, why: str) -> list: