feat. Enforce repo review config

tests/test_commands.py

@@ -7,6 +7,14 @@ def test_parse_review_command_modes() -> None:
     assert cmd.name == "review"
     assert cmd.mode == "security"
     assert cmd.full is True
+    assert cmd.mode_explicit is True
+
+
+def test_parse_review_command_defaults_to_non_explicit_summary_mode() -> None:
+    cmd = parse_command("@codex review")
+    assert cmd is not None
+    assert cmd.mode == "summary"
+    assert cmd.mode_explicit is False
 
 
 def test_parse_fix_branch() -> None:
@@ -17,4 +25,4 @@ def test_parse_fix_branch() -> None:
 
 
 def test_invalid_command_returns_none() -> None:
-    assert parse_command("hello") is None
+    assert parse_command("hello") is None