fix(ui): pass Gradio 6 theme/css via launch() for HF Spaces

app.py

@@ -860,18 +860,18 @@ main.gradio-container { max-width: 100% !important; }
 footer { display:none !important; }
 """
 
+NEAR_GRADIO_THEME = gr.themes.Base(
+    primary_hue=gr.themes.colors.blue,
+    secondary_hue=gr.themes.colors.blue,
+)
+
 
 # ---------------------------------------------------------------------------
 # UI
 # ---------------------------------------------------------------------------
 def build_app() -> gr.Blocks:
     with gr.Blocks(
-        theme=gr.themes.Base(
-            primary_hue=gr.themes.colors.blue,
-            secondary_hue=gr.themes.colors.blue,
-        ),
         title="NeAR",
-        css=CUSTOM_CSS,
         # (600, 600) deletes Gradio /tmp/gradio uploads in ~10m while the UI may still reference paths.
         delete_cache=None,
         fill_width=True,
@@ -1209,6 +1209,19 @@ def build_app() -> gr.Blocks:
 
 demo = build_app()
 demo.queue(max_size=8)
+
+# Gradio 6: theme/css must be passed to launch(); HF Spaces calls demo.launch() without our __main__ block.
+_orig_blocks_launch = demo.launch
+
+
+def _near_launch(*args: Any, **kwargs: Any):
+    kwargs.setdefault("theme", NEAR_GRADIO_THEME)
+    kwargs.setdefault("css", CUSTOM_CSS)
+    return _orig_blocks_launch(*args, **kwargs)
+
+
+demo.launch = _near_launch  # type: ignore[method-assign]
+
 start_tmp_gradio_pruner()
 
 # ---------------------------------------------------------------------------