Allow Team members to view their own token usage and cost

Feature Request

Problem:
As a Team plan member, I cannot view my own token usage or cost breakdown. The /usage command only shows the current session's token count (without pricing), and historical usage data is only accessible to Team admins.

I want to understand my own consumption without having to ask my Team administrator every time.

Proposed Solution:

• Allow individual Team members to view their own usage history (daily/weekly/monthly token counts and estimated cost)
• This could be exposed via:
• claude usage --week / claude usage --month CLI commands
• A personal usage section in the /usage dialog
• Or a link to a personal usage dashboard in the Anthropic Console

Why this matters:

• Individual developers want to be mindful of their usage and costs
• It helps with self-regulation and optimizing how we use the tool
• Reduces unnecessary communication overhead with admins for basic usage queries