#24096 cmux NEXT Home: run card shows tokens; the run sheet labels its dollar figure as API prices

Leo-ask: ask-b3f6f92b8f

What broke

Leo, on the Home run card: "whats the $ supposed to be? we're all using subrouter2 anyways :x"

Every finished Chief run on Home showed a bare dollar amount ("Worked for 3m · 4 steps · $0.04"). That number is Claude Code's total_cost_usd, meaning what the turn's tokens would cost at pay-per-token API prices. Claude Code reports it even on a subscription account or through subrouter2, where nobody pays it, and nothing said what it was.

The fix

• Run card (the one-line row under a Chief reply): shows the run's tokens instead of the dollar figure ("4 steps · 49k tokens"). Tokens are true on any account type.
• Run sheet (Open): keeps the figure, labelled "$0.04 at API prices", with a tooltip: "What these tokens would cost at pay-per-token API prices. A subscription doesn't bill this; it counts against the plan's usage limits."
• Two new strings in the home-channels catalog, with all 21 of its locales.

The app has no reliable signal for the account type: Claude Code reports the same total_cost_usd for API keys, subscriptions and routers. So the card drops the dollar figure everywhere instead of guessing, and the labelled number stays one click away. No setting was added: this isn't a behavior toggle, and showing an unlabelled dollar figure is never the right default. No default changed.

Test

webviews/test/home-run-cost.test.tsx renders a run with costUsd: 0.0421:

• the card's metas are exactly the step count and "49k tokens", and the card has no $;
• the sheet's cost reads run.cost ("$0.04 at API prices") with the run.cost.hint tooltip.

Fleet evidence (red on a test-only commit, green at the head) is in the comments below. The gallery fixtures run, run-open, narrow-run-card and narrow-run-card-480 cover the changed surfaces; their notes are updated.

Agent session: cosmic-gray

🤖 Generated with Claude Code

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Summary by cubic

Replaces the unexplained dollar figure on the Home run card with the run's token count, and labels the run sheet's dollar figure as API prices.

• The dollar figure is Claude Code's pay-per-token API price estimate, which nobody pays on a subscription or through a router.
• The run sheet now shows "$0.04 at API prices" with a tooltip explaining that a subscription counts it against usage limits instead of billing it.
• The app has no reliable signal for account type, so the card drops the dollar figure everywhere rather than guessing.
• Adds the run.cost and run.cost.hint strings to the home-channels catalog across all 21 locales.