cli: cleaner error handling

cli/src/core/service_creator.py

@@ -79,11 +79,7 @@ class ServiceCreator:
             registry_old.write_to_config()
             hla_names_old.write_to_config()
             switch_branch(repo, original_branch)
-
-            if isinstance(e, UVError):
-                pass
-            else:
-                raise e
+            raise e
 
     def _render_new_service_templates(
         self,
@@ -131,12 +127,9 @@ class ServiceCreator:
                 logger.warning(result.stderr.strip())
 
         except FileNotFoundError as e:
-            logger.error(
-                "The 'uv' command-line tool is not installed or not in your PATH.",
-            )
-            raise UVError from e
+            raise UVError("The 'uv' command-line tool is not installed or not in your PATH.") from e
         except subprocess.CalledProcessError as e:
             logger.error("'uv lock' failed to execute successfully.")
             logger.error(f"Exit Code: {e.returncode}")
             logger.error(f"Details:\n{e.stderr}")
-            raise UVError from e
+            raise UVError(e.stderr) from e