[FEATURE] Add timestamp in usage view

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

/status [and the web portal] show "current" usage but do not indicate the exact time of the query; it would be incredibly useful if it would instead say "Current session (as of 2026-02-24 15:33)", in the local timezone, so that the user can track how the usage budget is going during a session (e.g. by having a 'start' or 'midpoint' tab open [in the browser/web portal, or a terminal tab] and then an additional/subsequent tab for some later timepoint, and get a sense of not only how much usage budget has passed but also how much time has passed, and thus get a sense of how much 'rate'/velocity of usage is occurring).

Proposed Solution

(See above.)

Alternative Solutions

_No response_

Priority

Medium - Would be very helpful

Feature Category

Other

Use Case Example

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Additional Context

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