Update workspace name errors to include underscore

Author: danbarr

src/codegate/api/v1.py

@@ -82,7 +82,7 @@ async def create_new_workspace(
         raise HTTPException(
             status_code=400,
             detail=(
-                "Invalid workspace name. " "Please use only alphanumeric characters and dashes"
+                "Invalid workspace name. " "Please use only alphanumeric characters, hyphens, or underscores."
             ),
         )
     except crud.WorkspaceCrudError as e:
@@ -106,7 +106,7 @@ async def rename_workspace(
         raise HTTPException(
             status_code=400,
             detail=(
-                "Invalid workspace name. " "Please use only alphanumeric characters and dashes"
+                "Invalid workspace name. " "Please use only alphanumeric characters, hyphens, or underscores."
             ),
         )
     except crud.WorkspaceCrudError as e:

src/codegate/pipeline/cli/commands.py

@@ -187,7 +187,7 @@ async def _add_workspace(self, flags: Dict[str, str], args: List[str]) -> str:
         try:
             ws = await self.workspace_crud.add_workspace(new_workspace_name)
         except ValidationError:
-            return "Invalid workspace name: It should be alphanumeric and dashes"
+            return "Invalid workspace name: It should be alphanumeric with hyphens or underscores"
         except AlreadyExistsError:
             return f"Workspace **{new_workspace_name}** already exists"
         except crud.WorkspaceCrudError: