feat(ui): Forecast tab pre-fills T/top_p from cached tuning

app.py

@@ -437,6 +437,8 @@ with gr.Blocks(title="Kronos Forecast Dashboard", theme=gr.themes.Soft()) as dem
                     sample_count = gr.Slider(1, 30, 5, step=1, label="Monte Carlo samples (cpu-basic: 30 ≈ 4 min)")
                     temperature  = gr.Slider(0.1, 2.0, 1.0, step=0.1, label="Temperature (T)")
                     top_p        = gr.Slider(0.1, 1.0, 0.9, step=0.05, label="Top-p")
+                    use_tuned    = gr.Checkbox(value=True,
+                                               label="🎯 Use tuned defaults (if cached)")
                     run_btn      = gr.Button("🚀 Forecast", variant="primary")
                 with gr.Column(scale=3):
                     chart_out   = gr.Plot(label="Forecast Chart")
@@ -447,6 +449,22 @@ with gr.Blocks(title="Kronos Forecast Dashboard", theme=gr.themes.Soft()) as dem
                           outputs=[chart_out, summary_out, pred_out],
                           concurrency_id="predictor", concurrency_limit=1)
 
+            def _apply_tuning_to_sliders(symbol_val, interval_val, use_val):
+                t_val, p_val = autotune.apply_tuning(DB_PATH, symbol_val, interval_val, use_val)
+                t_update = gr.update(value=t_val) if t_val is not None else gr.update()
+                p_update = gr.update(value=p_val) if p_val is not None else gr.update()
+                return t_update, p_update
+
+            symbol.change(_apply_tuning_to_sliders,
+                          inputs=[symbol, interval, use_tuned],
+                          outputs=[temperature, top_p])
+            interval.change(_apply_tuning_to_sliders,
+                            inputs=[symbol, interval, use_tuned],
+                            outputs=[temperature, top_p])
+            use_tuned.change(_apply_tuning_to_sliders,
+                             inputs=[symbol, interval, use_tuned],
+                             outputs=[temperature, top_p])
+
         # ---- Watchlist tab ----
         with gr.Tab("Watchlist"):
             with gr.Row():