fix: Gradio v3 compatibility + requirements pin

app.py

@@ -535,11 +535,7 @@ button.secondary {
 def build_ui():
     with gr.Blocks(
         css=BERYL_CSS,
-        title="Nobility v1 — Beryl AI Labs",
-        theme=gr.themes.Base(
-            primary_hue="green",
-            neutral_hue="stone",
-        )
+        title="Nobility v1 — Beryl AI Labs"
     ) as demo:
 
         # ── State ────────────────────────────────────────────────────────────
@@ -618,8 +614,8 @@ def build_ui():
                 )
 
                 with gr.Row():
-                    submit_btn = gr.Button("RUN PIPELINE", variant="primary", scale=3)
-                    clear_btn = gr.Button("CLEAR", variant="secondary", scale=1)
+                    submit_btn = gr.Button("RUN PIPELINE", variant="primary")
+                    clear_btn = gr.Button("CLEAR")
 
                 gr.HTML('<div class="section-label" style="margin-top:8px;">Amanda Response — Layer 1 Brain</div>')