fix

backend/src/services/git/_gitea.py

@@ -130,9 +130,9 @@ class GitServiceGiteaMixin:
     # endregion list_gitea_repositories
 
     # region create_gitea_repository [TYPE Function]
-    # @PURPOSE: Create repository in Gitea for authenticated user.
+    # @PURPOSE: Create repository in Gitea for authenticated user. Idempotent — returns existing repo if name already taken.
     # @PRE  name is non-empty and PAT has repo creation permission.
-    # @POST  Returns created repository payload.
+    # @POST  Returns created or existing repository payload.
     # @RETURN  dict
     async def create_gitea_repository(
         self, server_url: str, pat: str, name: str, private: bool = True,
@@ -143,7 +143,19 @@ class GitServiceGiteaMixin:
             payload["description"] = description
         if default_branch:
             payload["default_branch"] = default_branch
-        created = await self._gitea_request("POST", server_url, pat, "/user/repos", payload=payload)
+        try:
+            created = await self._gitea_request("POST", server_url, pat, "/user/repos", payload=payload)
+        except HTTPException as exc:
+            if exc.status_code == 409:
+                logger.reason(
+                    f"Repository '{name}' already exists on Gitea, fetching existing repo",
+                    extra={"src": "create_gitea_repository"},
+                )
+                username = await self.get_gitea_current_user(server_url, pat)
+                existing = await self._gitea_request("GET", server_url, pat, f"/repos/{username}/{name}")
+                if isinstance(existing, dict):
+                    return existing
+            raise
         if not isinstance(created, dict):
             raise HTTPException(status_code=500, detail="Unexpected Gitea response while creating repository")
         return created