fix: use context instead of name for commit status

GitLab rejects duplicate name field; context allows updates.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: Jonathan Mucha

socketsecurity/core/scm/gitlab.py

@@ -279,7 +279,7 @@ def set_commit_status(self, state: str, description: str, target_url: str = '')
         url = f"{self.config.api_url}/projects/{self.config.mr_project_id}/statuses/{self.config.commit_sha}"
         payload = {
             "state": state,
-            "name": "socket-security",
+            "context": "socket-security",
             "description": description,
         }
         if target_url:

tests/unit/test_gitlab_commit_status.py

@@ -43,7 +43,7 @@ def test_calls_correct_url_and_json_payload(self, mock_post):
             "https://gitlab.example.com/api/v4/projects/99/statuses/abc123def456",
             json={
                 "state": "success",
-                "name": "socket-security",
+                "context": "socket-security",
                 "description": "No blocking issues",
                 "target_url": "https://app.socket.dev/report/123",
             },