♻️ refactor(tsl-api): tighten docs and retire stale tests

test/test_thirdparty_skills_pipeline.py

@@ -15,7 +15,6 @@ TSL_SYNC_WORKFLOW = ROOT / ".gitea" / "workflows" / "sync-tsl-playbook.yml"
 LEGACY_WORKFLOW = ROOT / ".gitea" / "workflows" / "update-thirdparty-superpowers.yml"
 UPDATE_SCRIPT = ROOT / ".gitea" / "ci" / "update_thirdparty_skills.sh"
 SYNC_SCRIPT = ROOT / ".gitea" / "ci" / "sync_thirdparty_skills.sh"
-SKILLS_MD = ROOT / "SKILLS.md"
 
 
 def load_manifest() -> dict:
@@ -235,13 +234,6 @@ class ThirdpartySkillsPipelineTests(unittest.TestCase):
             self.assertNotIn("COMMIT_AUTHOR_EMAIL", text)
             self.assertNotIn("@local", text)
 
-    def test_skills_doc_points_to_generic_thirdparty_sources(self):
-        text = SKILLS_MD.read_text(encoding="utf-8")
-        # Check that third-party skills section exists (without enforcing exact heading format)
-        self.assertIn("thirdparty", text.lower())
-        self.assertIn("skills/thirdparty/", text)
-        self.assertNotIn("Third-party Skills (superpowers)", text)
-
     def test_manifest_declares_unique_thirdparty_source_lists(self):
         source_lists = [entry["source_list"] for entry in load_manifest()["sources"]]
         self.assertEqual(len(source_lists), len(set(source_lists)))