fix(cnn_v3/training): fix defaults and help strings across py tools

- train_cnn_v3.py: enc-channels 4,8→8,16; checkpoint-every 50→100;
  add help strings for epochs/batch-size/lr/checkpoint-dir
- gen_test_vectors.py: add help strings for --W/--H/--seed
- export_cnn_v3_weights.py: fix --output help string (export/→export)

1 files changed, 6 insertions, 3 deletions

diff --git a/cnn_v3/training/gen_test_vectors.py b/cnn_v3/training/gen_test_vectors.py
index cdda5a5..3f81247 100644
--- a/cnn_v3/training/gen_test_vectors.py
+++ b/cnn_v3/training/gen_test_vectors.py
@@ -405,9 +405,12 @@ def main():
     parser = argparse.ArgumentParser(description="CNN v3 parity test vector generator")
     parser.add_argument('--header', action='store_true',
                         help='Emit C header to stdout')
-    parser.add_argument('--W', type=int, default=8)
-    parser.add_argument('--H', type=int, default=8)
-    parser.add_argument('--seed', type=int, default=42)
+    parser.add_argument('--W', type=int, default=8,
+                        help='Test image width (default 8)')
+    parser.add_argument('--H', type=int, default=8,
+                        help='Test image height (default 8)')
+    parser.add_argument('--seed', type=int, default=42,
+                        help='Random seed (default 42)')
     args = parser.parse_args()
 
     # Send self-test output to stderr so --header stdout stays clean