Initial FastAPI admin auth scaffold

app/lib/jwt/token.py

@@ -0,0 +1,23 @@
+from dataclasses import dataclass
+from typing import Any
+
+
+@dataclass(frozen=True, slots=True)
+class JwtToken:
+    raw: str
+    claims: dict[str, Any]
+
+    @property
+    def jwt_id(self) -> str:
+        return str(self.claims.get("jti", ""))
+
+    @property
+    def admin_id(self) -> int:
+        try:
+            return int(self.jwt_id)
+        except ValueError:
+            return 0
+
+    @property
+    def is_refresh(self) -> bool:
+        return self.claims.get("sub") == "refresh" or self.claims.get("token_type") == "refresh"