Add weights/ subdirectory to workspaces for CNN training outputs

Each workspace now has a weights/ directory to store binary weight files
from CNN training (e.g., cnn_v2_weights.bin).

Changes:
- Created workspaces/{main,test}/weights/
- Moved cnn_v2_weights.bin → workspaces/main/weights/
- Updated assets.txt reference
- Updated training scripts and export tool paths

handoff(Claude): Workspace weights/ directories added

1 files changed, 2 insertions, 2 deletions

diff --git a/scripts/train_cnn_v2_full.sh b/scripts/train_cnn_v2_full.sh
index d6ddbe2..db55a8b 100755
--- a/scripts/train_cnn_v2_full.sh
+++ b/scripts/train_cnn_v2_full.sh
@@ -155,7 +155,7 @@ echo "  Using checkpoint: $FINAL_CHECKPOINT"
 # Export weights only if not in validate mode
 if [ "$VALIDATE_ONLY" = false ]; then
     python3 training/export_cnn_v2_weights.py "$FINAL_CHECKPOINT" \
-      --output-weights workspaces/main/cnn_v2_weights.bin > /dev/null 2>&1
+      --output-weights workspaces/main/weights/cnn_v2_weights.bin > /dev/null 2>&1
 fi
 
 # Build cnn_test
@@ -183,7 +183,7 @@ echo ""
 echo "Results:"
 if [ "$VALIDATE_ONLY" = false ]; then
     echo "  - Checkpoints: $CHECKPOINT_DIR"
-    echo "  - Final weights: workspaces/main/cnn_v2_weights.bin"
+    echo "  - Final weights: workspaces/main/weights/cnn_v2_weights.bin"
 fi
 echo "  - Validation outputs: $VALIDATION_DIR"
 echo ""