docs(car): say Octopus dispatches still show a moving start, and list Wallbox among the plan readers (#5120 review)

An Intelligent dispatch already underway has its start trimmed to now by the
Octopus component, so the comment's claim that Octopus slots keep their own
start unchanged was wrong for those. The shared plan parser also has a new
caller in Wallbox since the rebase.

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

Author: chalfontchubby

apps/predbat/gateway.py

@@ -506,7 +506,7 @@ def _refresh_ev_windows(self):
 
         Datetimes are localized using ``self.local_tz`` so comparisons respect the component
         timezone and DST transitions.  The plan carries no year; ``utils.parse_car_plan_windows()``
-        (shared with myenergi and GivEnergy EVC) rebuilds it around now, so a window that straddles
+        (shared with the other charger components) rebuilds it around now, so a window that straddles
         New Year is anchored correctly whichever side of midnight it is read (#269).
         """
         planned = self.get_state_wrapper(f"binary_sensor.{self.prefix}_car_charging_slot", attribute="planned") or []

apps/predbat/output.py

@@ -165,7 +165,8 @@ def publish_car_plan(self):
 
                 # Show when the window really began, not the planner's clamped start, so the
                 # displayed start time stops walking forward once charging is underway (#269).
-                # Octopus slots carry no start_orig, so they keep their own start unchanged.
+                # Octopus slots carry no start_orig and show their own start - which the Octopus
+                # component trims to now once a dispatch is underway, so those still move.
                 window_start = window.get("start_orig", window["start"])
 
                 time_format_time = "%H:%M:%S"

apps/predbat/utils.py

@@ -1768,7 +1768,7 @@ def parse_car_plan_windows(planned, now, local_tz):
     """Turn one car's published charging plan into a list of localised (start, end) pairs.
 
     Shared by the components that drive a charger from the plan (myenergi, GivEnergy EVC,
-    Ohme, the gateway EVC) so the awkward parts stay in one place: the plan carries no year, so each window is
+    Ohme, Wallbox, the gateway EVC) so the awkward parts stay in one place: the plan carries no year, so each window is
     rebuilt around now - without that, a plan read either side of New Year lands eleven
     months out - and a malformed entry is skipped rather than costing the rest of the plan.