Add release headers service, runtime-aware API header handling, and i18n updates for release configuration

- Implement `releaseHeaders.js` to manage release-related HTTP headers.
- Update requests to include runtime-based release headers.
- Extend i18n phrases across multiple locales for release runtime and configuration labels.
- Enhance unit tests for header building and API availability error handling.

tests/e2e/release/release.live-smoke.spec.ts

@@ -29,6 +29,19 @@ function getLiveSettings() {
 
 test.describe.configure({ mode: "serial" });
 
+test("api-v2 gateway ping serves a trusted TLS API response", async ({ request }) => {
+  const response = await request.get("https://api-v2.truckwash.io/ping");
+  const body = await response.json();
+
+  expect(response.ok()).toBeTruthy();
+  expect(body).toMatchObject({
+    success: true,
+    data: {
+      message: "pong",
+    },
+  });
+});
+
 test.describe("Live smoke release gate", () => {
   test.skip(!liveSmokeEnabled, "Set PLAYWRIGHT_BASE_URL and seeded live credentials to run the live smoke gate.");