feat: v0.3.1 — show app version in header (sourced from package.json)

e2e/map.spec.ts

@@ -1,7 +1,12 @@
+import { readFileSync } from 'node:fs';
+import { join } from 'node:path';
 import { test, expect, type Page } from '@playwright/test';
 
 const APP_URL = '/';
 
+// Read at test time so the assertion tracks package.json automatically.
+const pkg = JSON.parse(readFileSync(join(__dirname, '..', 'package.json'), 'utf8')) as { version: string };
+
 // Must match MIN_ZOOM / MAX_ZOOM exported from components/Map.tsx.
 const MIN_ZOOM = 3;
 const MAX_ZOOM = 11;
@@ -24,6 +29,12 @@ test('page loads with the map and EU airport count', async ({ page }) => {
   expect(count).toBeGreaterThan(0);
 });
 
+test('header shows the app version sourced from package.json', async ({ page }) => {
+  await page.goto(APP_URL);
+  const header = page.getByTestId('app-header');
+  await expect(header).toContainText(`v${pkg.version}`);
+});
+
 test('clicking an airport marker opens a popup with name and ICAO', async ({ page }) => {
   await page.goto(APP_URL);
   await waitForAirportCount(page);