fix test assertion to match 'builtin' wording change

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: patricka3125

test/cli/commands/test_init.py

@@ -38,7 +38,7 @@ def test_init_success(self, mock_init_db, runner):
 
         assert result.exit_code == 0
         assert "CLI Agent Orchestrator initialized successfully" in result.output
-        assert "Seeded 2 default skills." in result.output
+        assert "Seeded 2 builtin skills." in result.output
         mock_init_db.assert_called_once()
         mock_seed.assert_called_once()