v0.2.0-beta.3

Fixed

• Clear state_class_removed Repairs on unit_rate / supply_charge.
  v0.2.0-beta.2 dropped state_class=MEASUREMENT from these to fix the
  inverse warning (#49), but that triggered HA's state_class_removed
  Repair on installs that had previously recorded stats. Root cause was
  using device_class=MONETARY for unit prices in the first place —
  MONETARY is for cumulative amounts, not rates. Drop MONETARY from
  unit_rate / supply_charge and restore state_class=MEASUREMENT;
  HA's price-tracking integrations (Nordpool, Tibber) use the same
  pattern. bill_projection keeps MONETARY without state_class —
  it's a forecast total, not a rate. Repairs banner clears on the next
  coordinator update.

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