test(backfill): verify pos1/pos2 are derived from grids before status-marking

test/microwaveprop/workers/contact_weather_enqueue_worker_test.exs

@@ -682,6 +682,23 @@ defmodule Microwaveprop.Workers.ContactWeatherEnqueueWorkerTest do
       assert updated.iemre_status == :queued
     end
 
+    test "derives pos1/pos2 from grid1/grid2 when missing, then queues path enrichments" do
+      _station = create_asos_station("KDFW", 32.90, -97.04)
+      # Historical rows can have grids without lat/lon maps; ensure_positions!/1
+      # must fill them in before path enrichments get a chance to mark :unavailable.
+      contact = create_contact(%{pos1: nil, pos2: nil, grid1: "EM12", grid2: "EM00"})
+      assert is_nil(contact.pos1)
+      assert is_nil(contact.pos2)
+
+      assert :ok = ContactWeatherEnqueueWorker.enqueue_for_contact(contact)
+
+      updated = Repo.get!(Contact, contact.id)
+      assert updated.pos1
+      assert updated.pos2
+      assert updated.terrain_status == :queued
+      assert updated.radar_status == :queued
+    end
+
     test "works for QSO without pos2 or grid2 (path statuses flip to :unavailable)" do
       _station = create_asos_station("KDFW", 32.90, -97.04)
       contact = create_contact(%{pos2: nil, grid2: nil})