v0.94.451

The reference household's asks of 12 Oct, all before the evening's QLD price
spike. One changes dispatch: on a spike night a P2P block drops to its
matched volume plus 10% and the rest of the battery goes to the spike. Block
times are set to the minute, and the Solver tab is the household's
signed-off layout. Review waived by the household ("I need all of this done
and ready by p2p").

• Devhub validation: confirmed live on devhub (HA 2026.10.1) at f668109,
  installed untagged via HACS from main (installed_version f668109) and
  restarted 11:15 AEST 12 Oct. The nimbus_load config entry is loaded;
  devhub's own entities stamp 0.94.451; 0 new Nimbus ERROR/Traceback
  lines after the restart (the known duplicate-unique-id class excluded).
  The six time.nimbus_solver_p2p_block_N_start_hour / _end_hour pickers
  exist. devhub's Solver tab was rebuilt in place and matches, card for card,
  the release preview the household reviewed (only entity ids differ), with
  mushroom sliders because mushroom is installed there. Not claimed: a solve
  on devhub, or the saved block hours carrying over there. devhub's own
  Solver entities read unavailable, so its block pickers read 00:00. The
  hour conversion (17 -> 17:00, 24 -> 00:00 read as midnight) and the
  spike-night floor are covered by tests, the floor also by a replay on the
  reference household's 12 Oct inputs (7.18 kW). The saved hours carry over
  through the number Store, the mechanism that carried the reserve's window
  over on the reference household on 11 Oct (#1695); not observed for the
  block times.
• Consumer check: a household sets P2P block times to the minute (20:30) and
  keeps its saved hours. A household with the spike override armed sees a
  block drop to its matched P2P plus 10% on a forecast spike night, and keep
  its rate on other nights. The Solver tab shows the household's own cards,
  one height per row, a zero line on every chart, and a battery chart whose
  kW, SoC and price share one zero. A dashboard card naming the old
  number.nimbus_solver_p2p_block_N_start_hour / _end_hour needs time.
  instead.

Changed

• Solver tab: the household's signed-off layout (12 Oct 2026, devhub).
  • The household's own Forecaster cards, copied as they are: Solver
    Forecast — Until Midnight, Solver Daily Summary (Today and Tomorrow)
    and Nimbus Solver Quality (EPR / Regret). They replace the three rebuilt
    in #1725. The EPR card's table no longer breaks after its first row; the
    daily summary drops "(Forecast Only)" and the line saying the Solver does
    not drive dispatch.
  • Performance: the plan-ahead cost chart full width, then the EPR card,
    At a glance, Score by day and Where the plan's cost comes from, one
    column each, one height, each chart's figures below it.
  • Money: the energy table and the cost by day one column each, beside
    tomorrow's energy pie.
  • Plan: the battery chart; the until-midnight table over two columns (the
    only card that scrolls, now filling its width), the EPR card, and Today
    and Tomorrow; below them the three risk sliders and their explanation.
  • Risk sliders: the household's mushroom sliders (100 px icon, red at 0
    to green at 1) where mushroom is installed; HA's tile slider elsewhere.
  • Every chart has a solid zero line. On the battery chart the kW, SoC
    and price axes share one zero: SoC runs -100..100 with negatives
    unlabelled, and two invisible series keep kW and price symmetric. Before,
    a full battery and a price spike both sat on the "40 kW" line.
  • The plan-ahead cost note says the right-hand end is the current plan and
    earlier points are earlier estimates.
• P2P block times are set to the minute (household, 12 Oct 2026; asked for
  on #565, where only a shared lead time shipped). Each block's From and
  Until are now time pickers (20:30), like the reserve's, on the Nimbus P2P
  sub-device. Saved hours carry over (17 -> 17:00). A block ending at
  midnight shows Until 00:00 and still runs to midnight; 00:00 to 00:00 is
  still "not set". The entity ids change: number.nimbus_solver_p2p_block_N_start_hour
  / _end_hour become time.nimbus_solver_p2p_block_N_start_hour /
  _end_hour. A dashboard card that names the old number. entities needs
  them changed to time..
• On a spike night a P2P block delivers its matched volume, and the rest
  goes to the spike. While the spike override is armed and a forecast price
  spike falls inside a block, that block's rate drops to the expected matched
  P2P volume plus 10% (sensor.nimbus_solver_p2p_recent_avg_volume_kwh,
  spread over every block's committed energy), and stays a floor in the spike
  periods. On the reference household's 12 Oct plan: 11.5 kW -> 7.18 kW, with
  18:00, 18:30 and 19:30 at the 38.7 kW export limit instead of 11.5, 24.5 and
  38.7 kW, about $300 better over the horizon in a solver replay. A day
  without a spike keeps the block's rate. Household's rule, 12 Oct 2026.