[Medformatik]

What changed and why

Fuel labels on the map at close zoom listed every grade a station prices (D €1.559 · E5 €1.699 · E10 €1.639), so neighbouring stations couldn't be compared at a glance. They now show only the grade the result list sorts by, which is the first selected fuel type or diesel when none is selected, plus how long ago that price was reported:

• D €1.559 · 25 min, E10 €1.639 · 3 h, D €1.589 · 2 d (German: Min., Std., Tg.)
• The price is the one the list sorts by: the cheapest self-service or standard car price per litre in the station's currency. Served-pump, HGV-only and per-kg prices aren't used.
• A station without that price shows the grade as missing (E10 –) instead of another grade's price.
• A price without a report time leaves the age out.

How it works: fuel results carry a new optional labelSummary on DataSourceResult. The search builds it for the comparison grade, and the map label uses it when a result has one, falling back to summary otherwise. The summary-label credits name the field actually shown. The result card in the list still shows every grade.

The age is computed when the search is answered, so it can be up to the search cache's two minutes behind. Stations near a border are compared in their own currencies, as the list sort already does.

Related work

Fixes #414

Verification

• npx vitest run integrations/fuel apps/web/src/components/map/layers/DataSourceLayer.test.tsx: 68 passed. New tests cover:
  • the label grade and price in en and de
  • the default to diesel matching the list's sort rule
  • the label using the same price as sortValues
  • a missing price for the grade
  • the age switching from minutes to hours to days
  • no age when the report time is missing
  • the map label preferring labelSummary and crediting that field
• tsc --noEmit passes in packages/core, apps/api (which includes the fuel integration) and apps/web.
• npx biome check and pnpm check-translations pass.
• I didn't check the change in a browser against a live fuel provider.

Release and upgrade impact

No package release: DataSourceResult.labelSummary is a type-only addition. I built @openmapx/extension-cli with pnpm build from main and from this branch, and its dist output (cli.js plus two chunks) is identical once content-hashed chunk names and absolute module-path comments are normalized.