fix: issue #20 cmd-J panel tab strip visibility and output panel parity

test/bds/desktop/automation_test.exs

@@ -129,6 +129,31 @@ defmodule BDS.Desktop.AutomationTest do
     assert automation_process_counts() == baseline
   end
 
+  @tag timeout: 120_000
+  test "cmd-J panel tab strip is visible and switches between tasks and output (issue #20)" do
+    {:ok, session} = Automation.start_session()
+
+    on_exit(fn ->
+      Automation.stop_session(session)
+    end)
+
+    assert :ok = Automation.press(session, "Meta+J")
+
+    snapshot = await(session, & &1.panel_visible)
+    assert snapshot.panel_visible == true
+
+    # The tab strip must offer both tabs and be tall enough to actually see
+    # and hit them — issue #20 was the strip collapsing to an unusable sliver.
+    assert "Tasks" in snapshot.panel_tab_labels
+    assert "Output" in snapshot.panel_tab_labels
+    assert snapshot.panel_tabs_height >= 20
+
+    assert :ok = Automation.click(session, "button[phx-value-tab='output']")
+
+    snapshot = await(session, &(&1.panel_active_tab == "Output"))
+    assert snapshot.panel_active_tab == "Output"
+  end
+
   @tag timeout: 120_000
   test "automation dispatches native menu actions into the liveview shell" do
     {:ok, session} = Automation.start_session()