defmodule Microwaveprop.AprsRepo do
  @moduledoc """
  Secondary repo for read-only access to aprs.me's `packets` table.

  Used by `Microwaveprop.Aprs` and the `Mix.Tasks.Calibrate.Aprs144` mix
  task to pull verified RF hops as ground truth for 144 MHz scoring.

  This repo never owns schema, migrations, or writes — it only ever
  issues SELECT queries against aprs.me's existing partitioned `packets`
  table. The connection is configured to fail closed if `APRS_DATABASE_URL`
  is unset in production.
  """
  use Ecto.Repo,
    otp_app: :microwaveprop,
    adapter: Ecto.Adapters.Postgres,
    read_only: true
end