tp- keys scoped to the CN cluster were rejected during login because
validateXiaomiApiKey only tried SGP and AMS. The runtime model-discovery
path (xiaomiModelManagerOptions) already included CN, so the two code
paths were out of sync.
Add token-plan-cn.xiaomimimo.com as the third fallback endpoint so
login validation tries SGP → AMS → CN, matching model discovery.
JacobZyy
5b6335ca4f