Live per-turn token figure on the working line

What it does

Shows a live token figure for the current turn on the working line while the turn runs.

Source

ganja-code-s7u (a live per-turn token figure on the working line).

The bead is closed when this issue is published, with its external reference pointing here (#38).

File and line references in this issue are to main as of 75a7a92.

Against the three criteria

• Direction (README): The README's only word on cost is README.md:28-29; it says nothing about showing usage.
• Today's terminal users: The working line shows a number only once a provider's usage report lands at the end of a message.
• Evidence: Known from the code: estimate_tokens is crate-private (crates/ganja-core/src/session.rs:3031).

Depends on

Nothing. It needs either an exported per-turn estimator or usage emitted per step.

Verdict

• Verdict: do
• Size: S — one commit, no plan.
• Exception to the probe rule: no.
• Date: 2026-09-19
• Verdict ticket: #45

Theme: #58

Start in crates/ganja-core/src/session.rs at estimate_tokens around line 3031, then trace how the terminal working line receives updates and how provider usage is currently reported. Determine whether a per-turn estimator or per-step usage is the appropriate path. Done means the working line shows the current turn’s live token figure while the turn runs, rather than only after the message completes.