Done

src/simstadt/runner.py

@@ -269,6 +269,7 @@ def _resolve_project(citygml_path: Path, project_path: Path | None) -> tuple[Pat
     if not citygml_path.exists():
         raise FileNotFoundError(f"{citygml_path} not found")
     if project_path is not None:
+        project_path = project_path.with_suffix('.proj')
         project_path.mkdir(exist_ok=True, parents=True)
         dest = project_path / citygml_path.name
         if not dest.exists():
@@ -294,8 +295,6 @@ def run_workflow_with_citygml(
     replaces: dict | None = None,
     description: str | None = None,
     destination: str | None = None,
-    # TODO: Accept str too?
-    # TODO: Add .proj if needed
     project_path: Path | None = None,
 ) -> SimStadtResults:
     """Copy a workflow template, inject parameters, run SimStadt, and return parsed results.
@@ -316,7 +315,7 @@ def run_workflow_with_citygml(
     if isinstance(template, str):
         template_path = get_template_path() / template
     else:
-        template_path = Path(template)
+        template_path = template
     template_name = template_path.stem
 
     if destination is None: