The rate is internal/fx: a free, no-key endpoint (open.er-api.com/v6/latest/USD), cached in memory and in a small file beside magpie's other caches (XDG_CACHE_HOME/magpie/fxrate.json) for 12h, refetched only once that's stale, and falling back to the last rate it ever had — or a fixed 7.2 — while offline; the currency row's tooltip names the rate and when it was learned. usage.FormatCost carries the $/¥ formatting (2 decimals above $1, 3 below, whole numbers above 100) that usage_cli.go and internal/tui/pages.go used to each have their own copy of; both now read Settings' currency once per command/redraw rather than per row. internal/gui/api.go exposes the rate on /api/settings always and on /api/state only when cny is actually chosen, so usd users' hot path never touches the network for a rate nothing shows with.
Tested with new internal/fx/fx_test.go (a fake server: fetches and caches, answers from memory then from the cache file with no further calls, refetches once stale, falls back to a stale cache or Fallback when offline, ignores a reply with no CNY rate), TestFXInState in internal/gui/fx_test.go, TestFmtCostShowsChosenCurrency in internal/tui/usage_test.go, and a new internal/gui/tests/currency.test.cjs in Chromium and WebKit, English and Chinese (the Usage page's $ by default and ¥12.34×7.2 once cny is picked, the currency row's labels/state/tooltip, a real wheel scroll deep into Settings left alone by picking a currency, the choice surviving a reload). go build -tags nogui, GOOS=linux and GOOS=windows builds, and go test -tags nogui -count=1 ./... all pass clean.
A fetch that failed is not tried again for 10 minutes (the stale or fixed rate shown at once meanwhile), so offline each state() does not wait up to 4s on the network: TestGetDoesNotRetryAFailedFetchAtOnce.
The product, module path (github.com/yetone/magpie), binaries, env vars
(MAGPIE_ADDR, MAGPIE_DEV_UI, MAGPIE_THEME, MAGPIE_DEBUG), config and cache
folders (~/.config/magpie, ~/.cache/magpie), bundle id (com.yetone.magpie),
gateway provider id and token, and every UI string now say magpie.
On first run magpie copies ~/.config/dial and ~/.cache/dial to the new
folders when they don't exist yet (copy, not move, so a still-running dial
keeps working; the old folders can be deleted by hand later).
The logo is a small round magpie in profile: one path for the header and
the tray, and the app tile adds the white belly and the blue-green tail.
The header mark is drawn in ink rather than the accent colour, which
fought the text in light mode.
The gateway now records every call's token counts (read from the provider's
own usage block, in both the translated and the pass-through paths) with the
calling agent taken from the client's User-Agent, into
~/.config/dial/usage.jsonl. A Usage tab sums them by period, agent and
model, with a per-hour/day/week timeline and cost at models.dev list
prices; dial usage does the same in the terminal.
Also nudges the window header 1pt up so the brand sits level with the
traffic lights, and lets ?view= open the window on a tab.
yetone