Feature Request: Display usage statistics in CLI terminal

Problem

Currently, Claude Pro users can only see their usage statistics (message limits, rate limits, time until reset) by opening https://claude.ai/settings/usage in a web browser. When working extensively in Claude Code CLI, this creates friction:

• Users hit rate limits unexpectedly without warning
• No way to monitor remaining quota from terminal
• Need to constantly switch to browser to check usage
• Cannot proactively manage conversation length to avoid hitting limits

Today I hit the rate limit and had to wait for reset. If I could see the usage percentage in the terminal, I would manage my session more efficiently.

Proposed Solution

Add usage statistics display in Claude Code CLI, similar to what's available on the web interface:

Option 1: Status line integration

• Display current usage percentage in status line
• Show time until limit reset
• Update in real-time during session

Option 2: CLI command

• Add /usage or /limits command
• Show messages used/remaining
• Display countdown to next reset

Option 3: Automatic warnings

• Warning when reaching 50%, 75%, 90% of limits
• Proactive notification before hitting rate limit

Benefits

• Better resource management during long CLI sessions
• Reduced frustration from unexpected limit hits
• No need to switch between terminal and browser
• Improved UX for power users who work primarily in CLI

Current Workaround

Opening https://claude.ai/settings/usage in browser, which breaks CLI workflow.

Additional Context

The /cost command exists but only shows "$0" for Pro subscribers with message "no need to monitor cost". However, we still need to monitor rate limits and usage quotas, which are separate from billing concerns.