Reduce default batch_size 64→8 (MONA adapters need ~17GB at bs=8)

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

src/training/train_gtauav.py

@@ -68,7 +68,7 @@ class TrainConfigGTAUAV:
     resume_from: str | None = None  # path to checkpoint for resuming
     output_dir: str = "out/gtauav/with_text"
     epochs: int = 50
-    batch_size: int = 64
+    batch_size: int = 8
     num_workers: int = 4
     learning_rate: float = 1e-4
     text_lr_factor: float = 0.1  # text encoder LR = learning_rate * factor
@@ -517,7 +517,7 @@ def main() -> None:
         help="Path to seg_filter.json for excluding bad images.",
     )
     parser.add_argument(
-        "--batch-size", type=int, default=64,
+        "--batch-size", type=int, default=8,
         help="Batch size.",
     )
     parser.add_argument(