feat: improve CLI defaults for dogfooding ergonomics

Single-file output now defaults to the input image's parent directory
instead of cwd, so `uitag /path/to/image.png` drops output beside the
image. Batch command path argument defaults to current directory, so
`uitag batch` with no args processes all images in cwd.

Author: swaynehales

tests/test_batch_cli.py

@@ -125,10 +125,12 @@ def test_format_summary_no_failures():
     assert "failed" not in summary
 
 
-def test_batch_main_no_args_exits():
-    """batch_main with no image path prints usage and exits."""
+def test_batch_main_no_args_defaults_to_cwd(tmp_path, monkeypatch):
+    """batch_main with no args defaults to current directory."""
     from uitag.batch_cli import batch_main
 
+    # Empty dir → exits with "No images found"
+    monkeypatch.chdir(tmp_path)
     with pytest.raises(SystemExit) as exc:
         batch_main([])
     assert exc.value.code != 0

uitag/batch_cli.py

@@ -82,8 +82,9 @@ def batch_main(argv: list[str] | None = None) -> None:
     )
     parser.add_argument(
         "path",
-        nargs="+",
-        help="Directory containing images, or individual image paths",
+        nargs="*",
+        default=["."],
+        help="Directory containing images, or individual image paths (default: current directory)",
     )
     parser.add_argument(
         "--output-dir",

uitag/cli.py

@@ -43,7 +43,12 @@ def main():
 
     parser = argparse.ArgumentParser(description="uitag Detection Pipeline")
     parser.add_argument("image", help="Path to screenshot")
-    parser.add_argument("--output-dir", "-o", default=".", help="Output directory")
+    parser.add_argument(
+        "--output-dir",
+        "-o",
+        default=None,
+        help="Output directory (default: same directory as input image)",
+    )
     parser.add_argument("--task", default="<OD>", help="Florence-2 task token")
     parser.add_argument(
         "--overlap", type=int, default=50, help="Quadrant overlap pixels"
@@ -82,7 +87,11 @@ def main():
         print(f"Error: Image not found: {image_path}", file=sys.stderr)
         sys.exit(1)
 
-    out_dir = Path(args.output_dir)
+    # Default output dir: same directory as the input image
+    if args.output_dir is None:
+        out_dir = Path(image_path).parent.resolve()
+    else:
+        out_dir = Path(args.output_dir)
     out_dir.mkdir(parents=True, exist_ok=True)
 
     from uitag.backends.selector import BackendPreference, select_backend