Finalize archive build flag and setup-only behavior

AGENTS.md

@@ -18,7 +18,7 @@
 - Populate raw data from archives: `uv run python geodata_to_unity.py --build-from-archive --export all` (unzips `archive/*`; dop20 filelist stays in archive for the downloader).
 - Rebuild VRTs after moving data: add `--force-vrt`.
 - Expected warning: `Computed -srcwin ... falls partially outside source raster extent` means the DOP coverage is slightly smaller than the tile footprint; edge pixels will be filled with NoData/zeros. Add adjacent JP2s or shrink the requested window if you need to silence it.
-- Scripts accept CLI overrides (e.g., `--config`, `--raw-dgm1-path`, `--raw-dop20-path`, `--export`); run `uv run python geodata_to_unity.py -h` to see options.
+- Scripts accept CLI overrides (e.g., `--config`, `--raw-dgm1-path`, `--raw-dop20-path`, `--export`, `--build-from-archive`); run `uv run python geodata_to_unity.py -h` to see options.
 
 ## Coding Style & Naming Conventions
 - Python scripts use 4-space indentation, early-exit error handling, and `SystemExit` for fatal issues; follow PEP 8 where practical.

geodata_to_unity.py

@@ -43,11 +43,6 @@ def parse_args(argv: Iterable[str] | None = None) -> argparse.Namespace:
         action="store_true",
         help="Rebuild VRTs even if present (useful after moving raw data).",
     )
-    parser.add_argument(
-        "--no-export",
-        action="store_true",
-        help="Only run setup/archive prep without exporting.",
-    )
     return parser.parse_args(argv)
 
 
@@ -71,15 +66,12 @@ def main(argv: Iterable[str] | None = None) -> int:
     if args.setup:
         ensure_directories(cfg)
         print(f"Directories ensured. Config at {args.config}.")
-        if args.no_export or args.export is None:
+        if args.export is None:
             return 0
 
     if args.build_from_archive:
         materialize_archives(cfg)
 
-    if args.no_export:
-        return 0
-
     exit_codes = []
     if args.export in ("heightmap", "all"):
         exit_codes.append(export_heightmaps(cfg, force_vrt=args.force_vrt))