[feat]. Add username and custom bot mention tags

tests/test_commands.py

@@ -26,3 +26,16 @@ def test_parse_fix_branch() -> None:
 
 def test_invalid_command_returns_none() -> None:
     assert parse_command("hello") is None
+
+
+def test_parse_review_command_for_bot_username_alias() -> None:
+    cmd = parse_command("@codex-bot review", aliases={"codex", "codex-bot"})
+    assert cmd is not None
+    assert cmd.name == "review"
+
+
+def test_parse_review_command_for_custom_alias() -> None:
+    cmd = parse_command("@review-buddy review tests", aliases={"codex", "review-buddy"})
+    assert cmd is not None
+    assert cmd.name == "review"
+    assert cmd.mode == "tests"