UX-54 round 4: modes off reads tomorrow at Home's count, no relabel in the walk

Modes off has no curve (no forecast is read, no house profile kept), so
dayview._levels() never ran there and tomorrow's legs were drawn from the
bound. homeview.trade_runs(ahead=f) now reads each leg at f(name, kind,
start), as mode_runs() does: no give while the emptiest battery is at the
floor, each share sized from that level. dayview._counted() gives a give
the level by Home's own count (the level now, plus what the blocks before
it put in, less what they take out); a charge is read from the floor,
because a full battery covers the house before the cheap hour.

The battery line says a give is planned when one is and the battery has
no give block, also with modes off.

test_ux54.py: the modes-on walk no longer relabels a GIVE role at the
floor; it asks control's own discharge envelope (packshare.envelope())
with each pack's cut-out at the floor. The peak-guard 20 % case asserts
the curve is at the floor at the 17:00 give start. A modes-off walk on a
cloudy day (arbitrage.decide() with the cycle's inputs, the packs moved by
what control does and by the house), cases A-D: control charges and gives
in exactly the quarters the tab has a block. trade_runs(ahead=f) unit
check. _stops() ends a give block where the level the tab shows is at the
floor (LEVEL_DP).

No decision, command, timing or option key changes.

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

goodwe_controller/DECISIONS/UX-54-forecast-tab.md

@@ -24,6 +24,16 @@ battery's expected level with its blocks. It follows the add-on, as Home does
   from the floor and a give from the ceiling. The blocks and the curve follow
   each other and are taken to a fixed point. The gate (`mode_gate`, UX-53) is
   not bypassed.
+- **Modes off has no curve** (no forecast is read, no house profile kept), so
+  `trade_runs(ahead=f)` reads each leg at Home's own count
+  (`dayview._counted()`): the level now, plus what the blocks before it put in,
+  less what they take out. No sun is read and the house only takes, so no give
+  block where the emptiest battery is at the floor by that count, and control
+  does not give there. A charge is read from the floor: a full battery covers
+  the house before the cheap hour, and control charges it back then. Walked
+  every 15 minutes on a cloudy day with the house (`test_ux54.py` part 7,
+  cases A-C), control charges and gives in exactly the quarters the tab has a
+  block.
 - **A block lasts as long as control acts.** A cheap run is sized for all the
   batteries charging together, so a slower one is still below
   `modetrade.charge_to()` when it ends, and control plans the next cheap slots
@@ -33,8 +43,10 @@ battery's expected level with its blocks. It follows the add-on, as Home does
   then ends where the curve has it at its own level (the curve puts a point
   there), and a give block where it reaches the floor (a step end, within the
   0.1 % the tab shows). Control, walked every 15 minutes through tomorrow
-  (`test_ux54.py` part 7, no tolerance), charges and gives in exactly the
-  quarters the tab has a block.
+  (`test_ux54.py` part 7), charges and gives in exactly the quarters the tab
+  has a block. A GIVE role counts only where control's own discharge envelope
+  (`packshare.envelope()`) is open; the walk puts each pack's cut-out at the
+  floor.
 - **The sun** is what `solarfc` reads. An hourly split (Solcast
   `detailedForecast`, Open-Meteo `wh_period`) is used as given. A daily total
   (Forecast.Solar, and any other state-only sensor, the owner's three "today
@@ -85,8 +97,16 @@ is `SolarToday.add()` after the solar read, in a `try`, in memory.
 - Tomorrow shows price blocks only. A monthly cycle is drawn today, where the
   curve then stops for that battery.
 - The curve uses the arbitrage floor and ceiling, as the plan does, not the
-  battery's own cut-out level. The house profile is a median per hour, net of
-  the solar the house used.
+  battery's own cut-out level. Control stops a pack at its cut-out, so with a
+  cut-out under the floor a battery in a give run covers the house below the
+  floor; Home draws no block there either. The house profile is a median per
+  hour, net of the solar the house used.
+- Modes off: the count knows no sun and no house. A battery at the floor that
+  the sun fills before a give gets no block until then (the tab says "The
+  add-on plans to give power. No block shows while the battery has no energy
+  to give."), and a small charge may be used by the house before the give.
+  A leg is the verdict's as it stands now, one price period, as on Home; with
+  several equal prices in a row control takes the next one as each passes.
 - Measured solar starts when the add-on starts; the tab says from when.
 
 ## Found, not changed