feat: move translate button into input column

Place the Translate button below the input textbox and info text
so the action is closer to where the user types.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app.py

@@ -126,6 +126,7 @@ def _build_demo() -> gr.Blocks:
                     buttons=["clear"],
                 )
                 input_info = gr.HTML(value=_format_info(0))
+                translate_btn = gr.Button("Translate", variant="primary")
             with gr.Column():
                 target_language = gr.Dropdown(
                     choices=language_names,
@@ -141,8 +142,6 @@ def _build_demo() -> gr.Blocks:
                     buttons=["copy"],
                 )
 
-        translate_btn = gr.Button("Translate", variant="primary")
-
         translate_btn.click(
             fn=_translate_with_loading,
             inputs=[input_text, target_language],

tests/test_app.py

@@ -178,6 +178,28 @@ def test_demo_has_translate_button(demo):
     assert any(b.value == "Translate" for b in buttons), "Expected a 'Translate' button"
 
 
+def _find_ancestor(block, ancestor_type: str):
+    """Walk up the parent chain to find the nearest ancestor of a given type."""
+    node = getattr(block, "parent", None)
+    while node is not None:
+        if type(node).__name__ == ancestor_type:
+            return node
+        node = getattr(node, "parent", None)
+    return None
+
+
+def test_translate_button_in_input_column(demo):
+    """Translate button should be in the same column as the input textbox."""
+    textboxes = [b for b in demo.blocks.values() if type(b).__name__ == "Textbox"]
+    input_tb = [t for t in textboxes if t.interactive is not False][0]
+    buttons = [b for b in demo.blocks.values() if type(b).__name__ == "Button" and b.value == "Translate"]
+    assert len(buttons) == 1
+    input_column = _find_ancestor(input_tb, "Column")
+    button_column = _find_ancestor(buttons[0], "Column")
+    assert input_column is not None, "Input textbox should be inside a Column"
+    assert input_column is button_column, "Translate button should be in the input column"
+
+
 def test_translate_handlers_wire_text_and_language(demo):
     """Translate click and submit handlers should wire input text and target language."""
     translate_fns = [fn for fn in demo.fns.values() if [type(i).__name__ for i in fn.inputs] == ["Textbox", "Dropdown"]]