OPT-36 round 3: B's charge counts the cheap time left; OPT-34 nights on their own shapes

The run is sized at the batteries' ratings, not the peak limit, so a run too
short to fill a Cheap hours battery is planned again later in the night.
Counting that run alone made B's give grow through the night and A's level
fall after A had bought (round 2: 55 -> 69 -> 41 -> 37 %, A to 56 %).
dayplan._cheap_give_kwh() now also counts the later firm slots before the
expensive hours that a run would still be worth charging in (price + the
spread control asks at most the give run's dearest slot); the Controller
passes the slots and the spread.

test_opt34: back to the original house shapes, fixture and expected values.
B is Off in the nights that test A's level (a Cheap hours B now covers
these hours); B's checks run in new `_b` nights; the 03:00 check runs in a
night from midnight; tail starts A at 60 %; late_fresh reads the kept 6.0.
test_opt36: slot cases, a whole night on one figure (level never moves),
F-1 with B counted (raised level reached and held). test_ux54: the run end
is read from the plan and asserted (02:30); the F1/F2 sweep uses a peak
limit that does not bind and reads a level shown as the target as at it.

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

goodwe_controller/DECISIONS/OPT-23-28-the-night-charge-covers-the-dear-hours.md

@@ -8,5 +8,5 @@
 - **House use.** An hour with sun is read at no less than the night base, as the sun sum reads it (the profile is net of the sun). An hour without is read as measured. An hour with no forecast counts no sun.
 - **Several batteries.** One total, shared by capacity with the ceiling passed on (`dayplan._spread()`). With the same floor and ceiling for all, they reach the ceiling together, so a shortfall that one battery cannot hold fills both to the same level, not one first. More than all hold: all go to the ceiling, `Plan.uncovered_kwh` is the rest, carried by another battery (Cheap hours, Solar first) or the grid, as the screen says.
 - **Cheap hours** still fills up; **Solar first** still never charges from the grid. The mode help says so.
-- **OPT-36 (0.20.1):** what Cheap hours batteries will give in the expensive hours is taken off the shortfall before Leftover solar shares it (`dayplan._cheap_give_kwh()`: its level when they start, the ceiling or what its cheap run reaches under the peak aim, minus the floor, x capacity x EFF). Owner, 2026-11-02: Solar first batteries count too (`_solar_first_give_kwh()`): their level now less the house's night use until the hours start, shared by the energy held, then the same sum; a battery the night drains to the floor counts 0. Live, 2026-11-02: A at 60 % went to 95 % while B at 94 % covered the hours. Test: `test_opt36.py`.
+- **OPT-36 (0.20.1):** what Cheap hours batteries will give in the expensive hours is taken off the shortfall before Leftover solar shares it (`dayplan._cheap_give_kwh()`: its level when they start, the ceiling or what it charges under the peak aim in the cheap run and the later slots still worth charging in, minus the floor, x capacity x EFF; the run alone, sized at the ratings, let A's level fall after A had bought). Owner, 2026-11-02: Solar first batteries count too (`_solar_first_give_kwh()`): their level now less the house's night use until the hours start, shared by the energy held, then the same sum; a battery the night drains to the floor counts 0. Live, 2026-11-02: A at 60 % went to 95 % while B at 94 % covered the hours. Test: `test_opt36.py`.
 - **Not done:** the run length (OPT-25).