diff --git a/src/gui/_home.py b/src/gui/_home.py
index 1df4482..1602c4a 100644
--- a/src/gui/_home.py
+++ b/src/gui/_home.py
@@ -288,3 +288,17 @@ def _home_page() -> None:
                         header=f"📄 {name}",
                         key_namespace=name,
                     )
+
+    # TEMP: visible marker at the very end of the home page's main
+    # content. Used to locate the "white bar" the user wants removed.
+    # If this red banner lines up with the offending white strip when
+    # scrolled to the bottom, the strip is something rendered right
+    # here at the tail of ``stAppViewBlockContainer``.
+    st.markdown(
+        '<div style="background:#ffe0e0;border:2px dashed #b00020;'
+        'color:#b00020;font-weight:700;font-size:13px;text-align:center;'
+        'padding:8px 12px;margin:4px 0;font-family:system-ui,sans-serif;">'
+        '◀ CLAUDE TEST #3 — END OF MAIN CONTENT — IS THIS THE WHITE BAR? ▶'
+        '</div>',
+        unsafe_allow_html=True,
+    )
diff --git a/src/gui/components/_legacy.py b/src/gui/components/_legacy.py
index e1b6f58..18e5401 100644
--- a/src/gui/components/_legacy.py
+++ b/src/gui/components/_legacy.py
@@ -787,22 +787,6 @@ a[data-testid="stPageLink-NavLink"][href*="close"] {
     except Exception:
         pass
 
-    # TEMP: visible marker in the main content flow, immediately before
-    # the footer-injection iframe. This lands at the very bottom of
-    # ``stAppViewBlockContainer`` — right where the user reports a
-    # white strip clipping text when scrolling. If this red bar lines
-    # up with the offending strip, the strip is the iframe wrapper
-    # (``stElementContainer`` around ``st.iframe``) or the block
-    # container's ``padding-bottom: 3rem`` reservation.
-    st.markdown(
-        '<div style="background:#ffe0e0;border:2px dashed #b00020;'
-        'color:#b00020;font-weight:700;font-size:13px;text-align:center;'
-        'padding:8px 12px;margin:4px 0;font-family:system-ui,sans-serif;">'
-        '◀ CLAUDE TEST #2 — IS THIS THE WHITE BAR? ▶'
-        '</div>',
-        unsafe_allow_html=True,
-    )
-
     st.iframe(
         f"""
 <script>