feat: add skill draft workflow

tests/test_project_skill.py

@@ -0,0 +1,27 @@
+from __future__ import annotations
+
+import unittest
+from pathlib import Path
+
+
+REPO_ROOT = Path(__file__).resolve().parents[1]
+
+
+class ProjectSkillContentTests(unittest.TestCase):
+    def test_skiff_skill_documents_project_usage_and_feedback_loop(self) -> None:
+        content = (REPO_ROOT / "skills" / "skiff" / "SKILL.md").read_text(encoding="utf-8")
+
+        for expected in (
+            "skiff add <name>",
+            "问题或优化回流",
+            "实际结果",
+            "期望结果",
+            "skiff check <name>",
+            "~/.skills/skills/<name>/",
+            "第三方 skill",
+        ):
+            self.assertIn(expected, content)
+
+
+if __name__ == "__main__":
+    unittest.main()