add first commit

chongming_jwt.pyi

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+# utils/jwt/chongming_jwt.pyi
+from typing import Optional
+
+class JWT:
+    def __init__(self, secret: str, algorithm: Optional[str] = None) -> None: ...
+    def encode(self, payload: str, expires_in_seconds: Optional[int] = None) -> str: ...
+    def decode(self, token: str) -> str: ...
+    def validate(self, token: str) -> bool: ...