Show global usage and reset time for 5h/weekly guardrails in Codex CLI

Feature request:
When usage limits are enforced (e.g., 5-hour or weekly guardrails), it would be extremely helpful if Codex CLI could display:

1. Global usage within the current window (not just the current session):

• Total tokens / requests used in the active 5h or weekly window.
• How much of the allowance remains.

1. Reset information:

• Exact time when the current window will reset (e.g., "Resets in 2h 15m").
• If multiple windows apply (e.g., 5h and weekly), show both.

1. Effective plan and limiter context:

• The plan currently applied on the backend (e.g., Pro or Plus), even if different from the local token’s plan.
• The type of guardrail or limiter that triggered (rate limit, reasoning window, etc.).

This would make it clear to the user:

• Whether the limit is session-based or global.
• How close they are to hitting the limit.
• How long they need to wait before being unblocked.

It would also help identify plan upgrade propagation issues, such as continuing to enforce Plus-level guardrails after upgrading to Pro.