fix. default full review without test execution

tests/test_repo_config.py

@@ -0,0 +1,8 @@
+from gitea_codex_bot.services.repo_config import parse_repo_review_config_text
+
+
+def test_parse_repo_review_config_defaults_to_full_and_no_tests() -> None:
+    cfg = parse_repo_review_config_text("enabled: true\n", configured=True)
+    assert cfg.default_mode == "full"
+    assert cfg.include_tests is False
+