New Command "ccusage prompt" to aggregate usage per prompt

[Spenhouet]

Other provides like Copilot charge per prompt. The current industry is very untransparent about what they charge for what. The per prompt pricing is much easier to comprehend. It would be great if we could have a command aggregating usage by prompt.

ccusage prompt

[ryoppippi]

Thank you for the report/suggestion and for the related TypeScript-era work.

I am sorry that the Rust migration made the original TypeScript implementation no longer mergeable as-is. The production CLI has moved from the TypeScript implementation to the Rust implementation under rust/crates/ccusage. The related TypeScript PR has been closed as obsolete, so I am closing this issue as well to keep the tracker focused.

If this behavior is still needed, please open a fresh issue or PR against the current Rust CLI with current-version output and a minimal reproduction or concrete use case.