fix(tests): correct parse_directives tuple return type in test helper

PR #1263 changed parse_directives to return (directives, na_directives)
but the test helper was unpacking a list. Also fix test_empty_body
assertions to expect ([], []) not [].

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.gitea/scripts/tests/test_sop_checklist.py

@@ -135,8 +135,8 @@ class TestParseDirectives(unittest.TestCase):
         self.aliases = _numeric_aliases()
 
     def parse_ack_revoke(self, body):
-        # parse_directives now returns list[tuple] (na_directives dropped per PR #1263).
-        directives = sop.parse_directives(body, self.aliases)
+        # parse_directives returns (directives, na_directives) per PR #1263.
+        directives, _na = sop.parse_directives(body, self.aliases)
         return directives
 
     def test_simple_ack(self):
@@ -201,8 +201,8 @@ class TestParseDirectives(unittest.TestCase):
         self.assertEqual(len(d), 1)
 
     def test_empty_body(self):
-        self.assertEqual(sop.parse_directives("", self.aliases), [])
-        self.assertEqual(sop.parse_directives(None, self.aliases), [])
+        self.assertEqual(sop.parse_directives("", self.aliases), ([], []))
+        self.assertEqual(sop.parse_directives(None, self.aliases), ([], []))
 
     def test_normalization_applied(self):
         # /sop-ack Comprehensive_Testing → canonical comprehensive-testing