v0.94.479

DC-006 slice 2: the Forecaster reads the device setup in active.

• Device setup, the Forecaster in active (#1574, DC-006 slice 2). With the
  device setup in active, each Forecaster model reads its battery, grid and
  solar power inputs from the device setup: in the sign it was trained with,
  the last good reading held for up to its max age when one goes missing, and
  then the model's own training mean (never 0) until it returns. A model
  retrained in active learns the setup's sign (battery discharge-positive).
  legacy and shadow installs read exactly what they read before; on a
  healthy site a model trained in legacy is fed identical inputs in
  active.
• Devhub validation: confirmed live on devhub (HA 2026.10.2) at ab0146b
  (release/0.94.479), installed via HACS and restarted at 18:40 AEST; devhub's
  own Forecaster sensors published by 18:40:59. devhub's device setup is
  active (revision 1, clean), so this release's code path is the one running.
  The log after the restart showed only devhub's known baseline (mirror
  duplicate-unique-ID notices, Forecaster rename notices).
  • Not claimed yet: a retrain in active (the model learning the setup's
    sign). devhub's models were last trained at 03:27; the first retrain on
    this release is checked on the day-long devhub run before slice 3.
• Consumer check: on an install in legacy or shadow, the Forecaster tab's
  forecasts are unchanged from 0.94.478. In active, a battery, grid or solar
  sensor that drops out keeps its last reading for its max age instead of
  falling to 0.