diff --git a/src/ClaudeDo.Ui/Views/InteractiveTerminalView.axaml b/src/ClaudeDo.Ui/Views/InteractiveTerminalView.axaml
index 8e2a5bc4..8277ddbb 100644
--- a/src/ClaudeDo.Ui/Views/InteractiveTerminalView.axaml
+++ b/src/ClaudeDo.Ui/Views/InteractiveTerminalView.axaml
@@ -11,5 +11,16 @@
     StartingDirectory to our real target and calls TerminalControl.LaunchProcess() exactly once,
     once the view model's descriptor is known (see AttachControl/Start).
   -->
-  <term:TerminalControl x:Name="TerminalHost" Process="" />
+  <!--
+    Font + BufferSize match the working spike. The control derives Cols/Rows from
+    (arranged size / character cell size), so an explicit monospace font is what keeps that
+    calculation correct; without it the terminal miscomputes its size and the child TUI renders
+    into the wrong area. Stretch so the pane's full size reaches the control's Arrange pass.
+  -->
+  <term:TerminalControl x:Name="TerminalHost" Process=""
+                        FontFamily="Cascadia Mono,Consolas,monospace"
+                        FontSize="14"
+                        BufferSize="2000"
+                        HorizontalAlignment="Stretch"
+                        VerticalAlignment="Stretch" />
 </UserControl>