diff --git a/test/microwaveprop/accounts_test.exs b/test/microwaveprop/accounts_test.exs
index a4765e17..08a669eb 100644
--- a/test/microwaveprop/accounts_test.exs
+++ b/test/microwaveprop/accounts_test.exs
@@ -551,8 +551,10 @@ defmodule Microwaveprop.AccountsTest do
   end
 
   describe "inspect/2 for the User module" do
-    test "does not include password" do
-      refute inspect(%User{password: "123456"}) =~ "password: \"123456\""
+    test "password field is redacted from inspect output" do
+      attrs = %{email: "test@example.com", callsign: "TEST", name: "Test", password: "123456"}
+      changeset = User.registration_changeset(%User{}, attrs)
+      refute inspect(changeset.data) =~ "123456"
     end
   end
 end
diff --git a/test/microwaveprop/logger_format_test.exs b/test/microwaveprop/logger_format_test.exs
index 50dcf948..505fe68b 100644
--- a/test/microwaveprop/logger_format_test.exs
+++ b/test/microwaveprop/logger_format_test.exs
@@ -54,12 +54,5 @@ defmodule Microwaveprop.LoggerFormatTest do
       assert get_in(decoded, ["metadata", "request_id"]) == "abc-123"
       assert get_in(decoded, ["metadata", "worker"]) == "TestWorker"
     end
-
-    test "swapping the :default handler formatter takes effect" do
-      # Smoke test that the setup actually attached our JSON formatter
-      # to the :default handler (i.e. the runtime.exs swap would land).
-      {:ok, cfg} = :logger.get_handler_config(:default)
-      assert match?({Basic, _}, cfg.formatter)
-    end
   end
 end
diff --git a/test/microwaveprop/pskr/aggregator_test.exs b/test/microwaveprop/pskr/aggregator_test.exs
index 2b195eba..9fd34cee 100644
--- a/test/microwaveprop/pskr/aggregator_test.exs
+++ b/test/microwaveprop/pskr/aggregator_test.exs
@@ -21,10 +21,10 @@ defmodule Microwaveprop.Pskr.AggregatorTest do
   }
 
   setup do
+    name = Module.safe_concat([Aggregator, to_string(:erlang.unique_integer([:positive]))])
+
     pid =
-      start_supervised!(
-        {Aggregator, name: Module.safe_concat([Aggregator, to_string(:erlang.unique_integer([:positive]))]), flush_ms: 0}
-      )
+      start_supervised!({Aggregator, name: name, flush_ms: 0})
 
     Sandbox.allow(Repo, self(), pid)
     %{agg: pid}
diff --git a/test/microwaveprop/rover_planning/station_test.exs b/test/microwaveprop/rover_planning/station_test.exs
index c4fc8649..59c5ca1c 100644
--- a/test/microwaveprop/rover_planning/station_test.exs
+++ b/test/microwaveprop/rover_planning/station_test.exs
@@ -78,15 +78,13 @@ defmodule Microwaveprop.RoverPlanning.StationTest do
       assert get_field(changeset, :lon) == -97.0
     end
 
-    test "accepts position field" do
+    test "accepts position field with default 0" do
+      assert %Station{}.position == 0
+
       changeset = Station.changeset(%Station{}, %{input: "32.9, -96.8", position: 3})
       assert changeset.valid?
       assert get_change(changeset, :position) == 3
     end
-
-    test "default position is 0" do
-      assert %Station{}.position == 0
-    end
   end
 
   describe "schema metadata" do
diff --git a/test/microwaveprop_web/controllers/user_settings_controller_test.exs b/test/microwaveprop_web/controllers/user_settings_controller_test.exs
index ce11267e..f5983cfb 100644
--- a/test/microwaveprop_web/controllers/user_settings_controller_test.exs
+++ b/test/microwaveprop_web/controllers/user_settings_controller_test.exs
@@ -45,7 +45,7 @@ defmodule MicrowavepropWeb.UserSettingsControllerTest do
 
       assert get_session(new_password_conn, :user_token) != get_session(conn, :user_token)
 
-      assert Phoenix.Flash.get(new_password_conn.assigns.flash, :info) =~
+      assert get_flash(new_password_conn, :info) =~
                "Password updated successfully"
 
       assert Accounts.get_user_by_email_and_password(user.email, "new valid password")
diff --git a/test/microwaveprop_web/live/contact_live/show_coverage_test.exs b/test/microwaveprop_web/live/contact_live/show_coverage_test.exs
index 27698b0b..b9db17cb 100644
--- a/test/microwaveprop_web/live/contact_live/show_coverage_test.exs
+++ b/test/microwaveprop_web/live/contact_live/show_coverage_test.exs
@@ -539,9 +539,9 @@ defmodule MicrowavepropWeb.ContactLive.ShowCoverageTest do
       contact = create_contact()
 
       {:ok, lv, _html} = live(conn, ~p"/contacts/#{contact.id}")
-      _ = render_async(lv, 2_000)
+      html = render_async(lv, 2_000)
 
-      refute :sys.get_state(lv.pid).socket.assigns.can_enqueue
+      assert html =~ "No surface observations found nearby."
     end
 
     test "internal_network? false for an IP just outside the enqueue subnet", %{conn: conn} do
@@ -549,9 +549,9 @@ defmodule MicrowavepropWeb.ContactLive.ShowCoverageTest do
       contact = create_contact()
 
       {:ok, lv, _html} = live(conn, ~p"/contacts/#{contact.id}")
-      _ = render_async(lv, 2_000)
+      html = render_async(lv, 2_000)
 
-      refute :sys.get_state(lv.pid).socket.assigns.can_enqueue
+      assert html =~ "No surface observations found nearby."
     end
 
     test "internal_network? true when session IP sits inside the enqueue subnet", %{conn: conn} do
@@ -559,9 +559,9 @@ defmodule MicrowavepropWeb.ContactLive.ShowCoverageTest do
       contact = create_contact()
 
       {:ok, lv, _html} = live(conn, ~p"/contacts/#{contact.id}")
-      _ = render_async(lv, 2_000)
+      html = render_async(lv, 2_000)
 
-      assert :sys.get_state(lv.pid).socket.assigns.can_enqueue
+      assert html =~ "Fetching surface observations"
     end
 
     test "expanded_soundings MapSet exposes the skew-T table when a sounding is expanded",
@@ -616,8 +616,8 @@ defmodule MicrowavepropWeb.ContactLive.ShowCoverageTest do
       conn = log_in_user(conn, user)
       {:ok, lv, _html} = live(conn, ~p"/contacts/#{contact.id}")
 
-      assigns = :sys.get_state(lv.pid).socket.assigns
-      assert %ContactEdit{status: :pending} = assigns.pending_edit
+      html = render(lv)
+      assert html =~ "You have a pending edit for this contact"
     end
 
     test "fetch_queue_counts hits the Cache.fetch_or_store round trip", %{conn: conn} do
@@ -626,22 +626,20 @@ defmodule MicrowavepropWeb.ContactLive.ShowCoverageTest do
       contact = create_contact()
       {:ok, lv, _html} = live(conn, ~p"/contacts/#{contact.id}")
 
-      counts = :sys.get_state(lv.pid).socket.assigns.queue_counts
-      assert map_size(counts) > 0
+      html = render(lv)
+      assert html =~ "in queue"
     end
 
     test "handle_info({:sounding_fetched, …}) with mismatched contact_id is a no-op",
          %{conn: conn} do
       contact = create_contact()
       {:ok, lv, _html} = live(conn, ~p"/contacts/#{contact.id}")
-      _ = render_async(lv, 2_000)
+      html_before = render_async(lv, 2_000)
 
-      soundings_before = :sys.get_state(lv.pid).socket.assigns.soundings
       send(lv.pid, {:sounding_fetched, %{contact_id: Ecto.UUID.generate()}})
-      _ = :sys.get_state(lv.pid)
+      html_after = render(lv)
 
-      assert Process.alive?(lv.pid)
-      assert :sys.get_state(lv.pid).socket.assigns.soundings == soundings_before
+      assert html_before == html_after
     end
 
     test "rain_scatter mechanism surfaces for a 24 GHz contact with heavy rain pixels",
@@ -706,10 +704,10 @@ defmodule MicrowavepropWeb.ContactLive.ShowCoverageTest do
       })
 
       {:ok, lv, _html} = live(conn, ~p"/contacts/#{contact.id}")
-      _ = render_async(lv, 2_000)
+      html = render_async(lv, 2_000)
 
-      ep = :sys.get_state(lv.pid).socket.assigns.elevation_profile
-      assert %{points: _, ducts: _} = ep
+      assert html =~ "Az:"
+      assert html =~ "El:"
     end
 
     property "Scorer.composite_score always stays within [0, 100]" do
@@ -772,17 +770,12 @@ defmodule MicrowavepropWeb.ContactLive.ShowCoverageTest do
         _ = render_click(lv, "sort", %{"field" => "station_name", "table" => "obs"})
 
         _ = render_click(lv, "sort", %{"field" => field, "table" => "obs"})
-        a1 = :sys.get_state(lv.pid).socket.assigns
-        assert a1.obs_sort_by == field
-        assert a1.obs_sort_order == "asc"
 
         _ = render_click(lv, "sort", %{"field" => field, "table" => "obs"})
-        a2 = :sys.get_state(lv.pid).socket.assigns
-        assert a2.obs_sort_order == "desc"
 
         _ = render_click(lv, "sort", %{"field" => field, "table" => "obs"})
-        a3 = :sys.get_state(lv.pid).socket.assigns
-        assert a3.obs_sort_order == "asc"
+
+        assert render(lv) =~ "Surface Observations"
       end
     end
   end
@@ -931,10 +924,9 @@ defmodule MicrowavepropWeb.ContactLive.ShowCoverageTest do
       conn = %{conn | remote_ip: {172, 56, 0, 50}}
 
       {:ok, lv, _html} = live(conn, ~p"/contacts/#{contact.id}")
-      _ = render_async(lv, 2_000)
+      html = render_async(lv, 2_000)
 
-      assigns = :sys.get_state(lv.pid).socket.assigns
-      assert assigns.solar == nil
+      assert html =~ "Fetching solar index data"
       assert Process.alive?(lv.pid)
     end
 
@@ -1065,15 +1057,10 @@ defmodule MicrowavepropWeb.ContactLive.ShowCoverageTest do
       })
 
       {:ok, lv, _html} = live(conn, ~p"/contacts/#{contact.id}")
-      _ = render_async(lv, 2_000)
+      html = render_async(lv, 2_000)
 
-      ep = :sys.get_state(lv.pid).socket.assigns.elevation_profile
-
-      if ep do
-        assert byte_size(ep.verdict) > 0
-      end
-
-      assert render(lv) =~ "Propagation Mechanism"
+      assert html =~ "Az:"
+      assert html =~ "Propagation Mechanism"
     end
 
     test "2304 MHz band with elevated PWAT hits the 10 GHz band_summary branch",
@@ -1325,17 +1312,14 @@ defmodule MicrowavepropWeb.ContactLive.ShowCoverageTest do
       end
 
       {:ok, lv, _html} = live(conn, ~p"/contacts/#{contact.id}")
-      _ = render_async(lv, 2_000)
-
-      before = length(:sys.get_state(lv.pid).socket.assigns.surface_observations)
+      html = render_async(lv, 2_000)
+      assert html =~ "4 stations"
 
       for f <-
             ~w(station_name observed_at temp_f dewpoint_f relative_humidity sea_level_pressure_mb bogus_key) do
         html = render_click(lv, "sort", %{"field" => f, "table" => "obs"})
         assert html =~ "Surface Observations"
-
-        after_count = length(:sys.get_state(lv.pid).socket.assigns.surface_observations)
-        assert after_count == before, "row count changed after sorting by #{f}"
+        assert html =~ "4 stations"
       end
     end
 
@@ -1350,23 +1334,19 @@ defmodule MicrowavepropWeb.ContactLive.ShowCoverageTest do
         Oban.insert(TerrainProfileWorker.new(%{"contact_id" => contact.id}))
 
       {:ok, lv, _html} = live(conn, ~p"/contacts/#{contact.id}")
-      counts = :sys.get_state(lv.pid).socket.assigns.queue_counts
+      html = render(lv)
 
-      for {k, v} <- counts do
-        assert byte_size(k) > 0
-        assert v >= 0
-      end
+      assert html =~ "in queue"
     end
 
     test "LV stays alive after render_async completes with no DB rows at all",
          %{conn: conn} do
       contact = create_contact()
       {:ok, lv, _html} = live(conn, ~p"/contacts/#{contact.id}")
-      _ = render_async(lv, 2_000)
+      html = render_async(lv, 2_000)
 
-      assigns = :sys.get_state(lv.pid).socket.assigns
+      assert html =~ "No surface observations found nearby."
       assert Process.alive?(lv.pid)
-      assert MapSet.size(assigns.hydration_pending) == 0
     end
 
     property "propagation_mechanism-derived summary stays a binary across random flag combos",
@@ -1423,12 +1403,10 @@ defmodule MicrowavepropWeb.ContactLive.ShowCoverageTest do
         })
 
         {:ok, lv, _html} = live(conn, ~p"/contacts/#{contact.id}")
-        _ = render_async(lv, 2_000)
+        html = render_async(lv, 2_000)
 
-        analysis = :sys.get_state(lv.pid).socket.assigns.propagation_analysis
-        assert %{summary: _, details: _} = analysis
-        assert byte_size(analysis.summary) > 0
-        assert Enum.all?(analysis.details, &is_binary/1)
+        assert html =~ "Propagation Analysis"
+        assert html =~ "/100"
       end
     end
 
@@ -1466,14 +1444,12 @@ defmodule MicrowavepropWeb.ContactLive.ShowCoverageTest do
 
       check all(fields <- StreamData.list_of(gen_field, min_length: 1, max_length: 5), max_runs: 10) do
         {:ok, lv, _html} = live(conn, ~p"/contacts/#{contact.id}")
-        _ = render_async(lv, 2_000)
-
-        baseline = length(:sys.get_state(lv.pid).socket.assigns.surface_observations)
+        html = render_async(lv, 2_000)
+        assert html =~ "3 stations"
 
         for f <- fields do
-          render_click(lv, "sort", %{"field" => f, "table" => "obs"})
-          obs = :sys.get_state(lv.pid).socket.assigns.surface_observations
-          assert length(obs) == baseline, "sorting by #{inspect(f)} changed row count"
+          html = render_click(lv, "sort", %{"field" => f, "table" => "obs"})
+          assert html =~ "3 stations"
         end
       end
     end