fix: re-read auth from storage before each token refresh attempt (#2)

* re-read auth from storage before each token refresh attempt

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

* handle 401 refresh failure by re-reading rotated token from storage

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Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>