ref #8: [feat] add http endpoint

usecase/interface.py

@@ -34,6 +34,7 @@ class SandboxRuntime(Protocol):
         *,
         session_id: str,
         chat_id: str,
+        created_at: datetime,
         expires_at: datetime,
     ) -> SandboxSession: ...
 

usecase/sandbox.py

@@ -53,10 +53,12 @@ class CreateSandbox:
             self._runtime.stop(session.container_id)
             self._repository.delete(session.session_id)
 
+        expires_at = now + self._ttl
         new_session = self._runtime.create(
             session_id=_new_session_id(),
             chat_id=command.chat_id,
-            expires_at=now + self._ttl,
+            created_at=now,
+            expires_at=expires_at,
         )
         self._repository.save(new_session)
         self._logger.info(