feat: Add OSM refresh script and update loading scripts for improved database handling

backend/scripts/tracks_load.py

@@ -45,10 +45,17 @@ def build_argument_parser() -> argparse.ArgumentParser:
         help="Path to the normalized track JSON file produced by tracks_import.py",
     )
     parser.add_argument(
-        "--commit/--no-commit",
+        "--commit",
         dest="commit",
+        action="store_true",
         default=True,
-        help="Commit the transaction (default: commit). Use --no-commit for dry runs.",
+        help="Commit the transaction after loading (default).",
+    )
+    parser.add_argument(
+        "--no-commit",
+        dest="commit",
+        action="store_false",
+        help="Rollback the transaction after loading (useful for dry runs).",
     )
     return parser