The CLI/TUI slash worker and gateway /usage now render Codex quota windows, but the
Desktop usage feed reads the `session.usage` RPC, which returned only Nous
`credits_lines`. Add `account_lines` (the same `render_account_usage_lines` block,
fetched against the session's live route or the configured `model.provider` when no
agent is built) and render it in the Desktop `renderRpcResult` ahead of credits.
Fail-open like the credits block.
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