fix: match UI defaults to reduced memory params

app.py

@@ -282,7 +282,7 @@ def build_ui():
                         )
                         max_samples = gr.Number(
                             label="Max Samples (0 = use all)",
-                            value=0,
+                            value=5000,
                             info="Limit dataset size for faster experiments",
                         )
 
@@ -302,18 +302,18 @@ def build_ui():
                             1, 8, value=1, step=1, label="Batch Size per Device"
                         )
                         grad_accum = gr.Slider(
-                            1, 64, value=16, step=1, label="Gradient Accumulation Steps"
+                            1, 64, value=8, step=1, label="Gradient Accumulation Steps"
                         )
                         max_seq_length = gr.Slider(
-                            512, 8192, value=1024, step=256, label="Max Sequence Length"
+                            256, 4096, value=512, step=256, label="Max Sequence Length"
                         )
 
                         gr.Markdown("### LoRA Configuration")
                         lora_r = gr.Slider(
-                            8, 256, value=64, step=8, label="LoRA Rank (r)"
+                            8, 128, value=16, step=8, label="LoRA Rank (r)"
                         )
                         lora_alpha = gr.Slider(
-                            16, 512, value=128, step=16, label="LoRA Alpha"
+                            16, 256, value=32, step=16, label="LoRA Alpha"
                         )
 
                 with gr.Row():