diff --git a/infra/marimo/theme/scripts/apply-overlay.sh b/infra/marimo/theme/scripts/apply-overlay.sh
index d2fbdfd..f5c55e2 100755
--- a/infra/marimo/theme/scripts/apply-overlay.sh
+++ b/infra/marimo/theme/scripts/apply-overlay.sh
@@ -90,6 +90,28 @@ open(p, 'w').write(s)
 PY
 fi
 
+# 4c. Strip the home page's top-right cluster: the Tutorials dropdown, the
+#     user-settings gear and the server Shutdown X. None of them may ever
+#     reach the landing page, so unlike 4b this fails the build when an
+#     upstream bump leaves any of them in place rather than skipping quietly.
+#     (The editor keeps its own gear: it hosts the settings dialog that the
+#     notebook menu, AI footer and packages panel open.)
+python3 - "$SRC/frontend/src/components/pages/home-page.tsx" <<'PY'
+import sys, re
+p = sys.argv[1]
+s = open(p).read()
+s = re.sub(
+    r'^[ \t]*<div[^>]*>\s*<OpenTutorialDropDown />.*?^[ \t]*</div>\n',
+    '', s, count=1, flags=re.M | re.S,
+)
+s = re.sub(r'^import \{ (ConfigButton|ShutdownButton) \} from "[^"]+";\n', '', s, flags=re.M)
+s = re.sub(r'\bOpenTutorialDropDown,\s*', '', s)
+left = sorted(set(re.findall(r'\b(OpenTutorialDropDown|ConfigButton|ShutdownButton)\b', s)))
+if left:
+    sys.exit(f"overlay: home page still references {', '.join(left)} in {p}")
+open(p, 'w').write(s)
+PY
+
 # 5. Inject the lucide-react → shim alias into vite.config.mts.
 #    Match the `resolve: {` block and insert an `alias` entry right after.
 if ! grep -q 'lucide-shim' "$SRC/frontend/vite.config.mts"; then