feat: v0.9.0 — single-screen 3-pane shell + left Assets pane (wallet/reputation/fleet/time controls) from a single /api/state poll; right pane placeholder

lib/format.ts

@@ -0,0 +1,20 @@
+// Pure display formatters for the client panes (v0.9.0) — no game logic, unit-testable in node.
+
+const CURRENCY = new Intl.NumberFormat('en-US', { style: 'currency', currency: 'EUR' });
+
+export function formatCash(value: number): string {
+  return CURRENCY.format(value);
+}
+
+// "6300 / 6300 L" — current value rounded (live fuel is fractional mid-flight).
+export function formatFuel(fuel: number, maxFuel: number): string {
+  return `${Math.round(fuel)} / ${maxFuel} L`;
+}
+
+// The sim clock is epoch ms (seeded from real time) — shown as a UTC wall-clock so the
+// display is deterministic regardless of the viewer's timezone.
+export function formatSimClock(clockMs: number): string {
+  const d = new Date(clockMs);
+  const pad = (n: number) => String(n).padStart(2, '0');
+  return `${d.getUTCFullYear()}-${pad(d.getUTCMonth() + 1)}-${pad(d.getUTCDate())} ${pad(d.getUTCHours())}:${pad(d.getUTCMinutes())} UTC`;
+}