cli: cleaner error handling

cli/src/core/exceptions.py

@@ -0,0 +1,4 @@
+class UVError(Exception):
+    """Raised when running uv yields an exception"""
+
+    pass

cli/src/core/service_creator.py

@@ -1,12 +1,12 @@
 import logging
 import shutil
 import subprocess
-import sys
 from pathlib import Path
 
 import copier
 import git
 
+from core.exceptions import UVError
 from core.git import (
     assert_clean_repo,
     delete_local_branch,
@@ -79,7 +79,11 @@ class ServiceCreator:
             registry_old.write_to_config()
             hla_names_old.write_to_config()
             switch_branch(repo, original_branch)
-            raise e
+
+            if isinstance(e, UVError):
+                pass
+            else:
+                raise e
 
     def _render_new_service_templates(
         self,
@@ -130,9 +134,9 @@ class ServiceCreator:
             logger.error(
                 "The 'uv' command-line tool is not installed or not in your PATH.",
             )
-            raise e
+            raise UVError 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 e
+            raise UVError from e