Token Cost Ranking

Use N=3 and M=5 by default. Override either value when the user specifies it.

Workflow

1. Calculate the latest N complete calendar days in Asia/Shanghai, then convert the window to UTC [startTime, endTime). If the user provides explicit dates, use those dates instead.

2. Run the following read-only command. Set <host> to the DCE host provided by the user. Omit --hostname when the CLI has exactly one host configured:

   dce business-cockpit businessvalueservice get-tenant-token-usage \
     --hostname <host> \
     --start-time <UTC-start> \
     --end-time <UTC-end-exclusive> \
     -o json