i18n(xlvask_review): translate missing keys for no/sv/de/en + locale coverage test (#307)

## Summary

The `invoicing_period.xlvask_review.*` and
`invoice_period.flags.preview.xlvask_usage_log` keys were already
comprehensively localised in `no`, `sv`, `de`, and `en` — the five
active locales (`da`, `en`, `sv`, `de`, `no`) each carry the same 173
`xlvask_review` keys, and the remaining English literal in
`flags.automatic.xlvask_missing_order_link` for `no`/`sv`/`de` has been
replaced with native Norwegian / Swedish / German translations that
mirror the `da` reference catalogue. This PR locks that coverage in with
a focused unit test so future da-side edits cannot silently drop a
translation for any of the non-da locales.

## Commits

- `49ff30f` — TRU-13 / AUT-9: translate xlvask_missing_order_link to
no/sv/de
- `550d32c` — TRU-13 / AUT-9: add xlvask_review translation coverage
regression test

## Verification

- `npm run i18n:v2:check` — clean across source-check,
global-template-audit, template-dedupe-audit, and word-audit.
- `npx vitest run tests/unit/i18n-xlvask-review-coverage.spec.js` — 1 /
1 pass (5 locales × 173 keys verified).
- `npx vitest run tests/unit/i18n-*` — 11 / 11 pass.
- `npx playwright test tests/e2e/i18n-v2-integrity.spec.ts` — 126 / 126
pass across all 9 browser projects.

The new test in `tests/unit/i18n-xlvask-review-coverage.spec.js`
enumerates every leaf string under
`compat.invoicing_period.xlvask_review` in `da`, then asserts for each
of `no`, `sv`, `de`, `en` that every key is present and that every
localised value is a non-empty string. Verified it catches regressions
by temporarily removing a key from `no` and observing the test fail with
the missing key listed.

Closes TRU-13.

---------

Co-authored-by: Jeppe <jeppe@copenhagentruckwash.io>
Co-authored-by: openhands <openhands@all-hands.dev>

src/i18n/generated/de-v2.json

@@ -4340,7 +4340,7 @@
               "vehicle_subscription_type_mismatch": "{product} @:{'words.generated.does'} @:{'words.generated.not'} match @:{'words.generated.the'} @:{'words.generated.vehicle'} @:{'words.generated.subscription'} @:{'words.generated.type'} {expected_product}.",
               "wash_certificate_attached_without_item": "@:{'words.generated.waschzertifikat'} @:{'words.generated.ist'} @:{'words.generated.ohne'} @:{'words.generated.waschzertifikat'}-@.capitalize:{'words.generated.position'} angehaengt.",
               "wash_certificate_item_without_certificate": "@:{'words.generated.waschzertifikat'}-@.capitalize:{'words.generated.position'} @:{'words.generated.ist'} @:{'words.generated.ohne'} @:{'words.generated.waschzertifikat'} vorhanden.",
-              "xlvask_missing_order_link": "@:{'words.generated.xl'} @:{'words.generated.vask'} @:{'words.generated.wash'} @:{'words.generated.is'} neither ignored nor linked @:{'words.generated.to'} @:{'words.generated.an'} @:{'words.generated.order'} @:{'words.generated.in'} @:{'words.generated.the'} @:{'words.generated.selected'} @:{'words.generated.period'}."
+              "xlvask_missing_order_link": "@:{'words.generated.xl'} @.capitalize:{'words.generated.vask'}-@:{'words.generated.registrierung'} @:{'words.generated.ist'} weder ignoriert noch @:{'words.generated.mit'} einer @:{'words.generated.bestellung'} im ausgewaehlten @:{'words.generated.zeitraum'} verknuepft."
             },
             "preview": {
               "entities": {

src/i18n/generated/no-v2.json

@@ -4343,7 +4343,7 @@
               "vehicle_subscription_type_mismatch": "{product} @:{'words.generated.does'} @:{'words.generated.not'} match @:{'words.generated.the'} @:{'words.generated.vehicle'} @:{'words.generated.subscription'} @:{'words.generated.type'} {expected_product}.",
               "wash_certificate_attached_without_item": "@.capitalize:{'words.generated.vaskesertifikat'} @:{'words.generated.er'} @:{'words.generated.vedlagt'} @:{'words.generated.uten'} @:{'words.replication.host_definite_suffix'} @:{'words.generated.vaskesertifikat'}-@:{'words.generated.linje'}.",
               "wash_certificate_item_without_certificate": "@.capitalize:{'words.generated.vaskesertifikat'}-@:{'words.generated.linjen'} @:{'words.generated.finnes'} @:{'words.generated.uten'} @:{'words.generated.et'} @:{'words.generated.vaskesertifikat'}.",
-              "xlvask_missing_order_link": "@:{'words.generated.xl'} @.capitalize:{'words.generated.vask'} @:{'words.generated.wash'} @:{'words.generated.is'} neither ignored nor linked @:{'words.generated.to'} @:{'words.generated.an'} @:{'words.generated.order'} @:{'words.generated.in'} @:{'words.generated.the'} @:{'words.generated.selected'} @:{'words.generated.period'}."
+              "xlvask_missing_order_link": "@:{'words.generated.xl'} @.capitalize:{'words.generated.vask'}-registreringen @:{'words.generated.er'} verken ignorert @:{'words.generated.eller'} knyttet @:{'words.generated.til'} @:{'words.replication.host_definite_suffix'} @:{'words.generated.ordre'} @:{'words.generated.i'} @:{'words.replication.article.host_mention'} @:{'words.generated.valgte'} @:{'words.generated.periode'}."
             },
             "preview": {
               "entities": {

src/i18n/generated/sv-v2.json

@@ -4393,7 +4393,7 @@
               "vehicle_subscription_type_mismatch": "{product} @:{'words.generated.does'} @:{'words.generated.not'} @:{'words.generated.match'} @:{'words.generated.the'} @:{'words.generated.vehicle'} @:{'words.generated.subscription'} @:{'words.generated.type'} {expected_product}.",
               "wash_certificate_attached_without_item": "@.capitalize:{'words.generated.tvattcertifikat_2'} ar bifogat @:{'words.generated.utan'} @:{'words.replication.host_definite_suffix'} tvattcertifikatrad.",
               "wash_certificate_item_without_certificate": "@:{'words.generated.tvattcertifikatraden'} @:{'words.generated.finns'} @:{'words.generated.utan'} @:{'words.generated.ett'} @:{'words.generated.tvattcertifikat_2'}.",
-              "xlvask_missing_order_link": "@:{'words.generated.xl'} @.capitalize:{'words.generated.vask'} @:{'words.generated.wash'} @:{'words.generated.is'} neither ignored nor @:{'words.generated.linked'} @:{'words.generated.to'} @:{'words.generated.an'} @:{'words.generated.order'} @:{'words.generated.in'} @:{'words.generated.the'} @:{'words.generated.selected'} @:{'words.generated.period'}."
+              "xlvask_missing_order_link": "@:{'words.generated.xl'} @.capitalize:{'words.generated.vask'}-registreringen @:{'words.generated.ar'} varken ignorerad @:{'words.generated.eller'} kopplad @:{'words.generated.till'} @:{'words.replication.host_definite_suffix'} @:{'words.generated.order'} @:{'words.generated.i'} @:{'words.replication.article.host_mention'} @:{'words.generated.valda'} perioden."
             },
             "preview": {
               "entities": {

src/i18n/source/de/phrases/compat/invoice_period/flags.json

@@ -26,7 +26,7 @@
           "vehicle_subscription_type_mismatch": "{product} @:{'terms.glossary.does'} @:{'terms.glossary.not'} match @:{'terms.glossary.the'} @:{'terms.glossary.vehicle'} @:{'terms.glossary.subscription'} @:{'terms.glossary.type'} {expected_product}.",
           "wash_certificate_attached_without_item": "@:{'terms.glossary.waschzertifikat'} @:{'terms.glossary.ist'} @:{'terms.glossary.ohne'} @:{'terms.glossary.waschzertifikat'}-@.capitalize:{'terms.glossary.position'} angehaengt.",
           "wash_certificate_item_without_certificate": "@:{'terms.glossary.waschzertifikat'}-@.capitalize:{'terms.glossary.position'} @:{'terms.glossary.ist'} @:{'terms.glossary.ohne'} @:{'terms.glossary.waschzertifikat'} vorhanden.",
-          "xlvask_missing_order_link": "@:{'terms.glossary.xl'} @:{'terms.glossary.vask'} @:{'terms.glossary.wash'} @:{'terms.glossary.is'} neither ignored nor linked @:{'terms.glossary.to'} @:{'terms.glossary.an'} @:{'terms.glossary.order'} @:{'terms.glossary.in'} @:{'terms.glossary.the'} @:{'terms.glossary.selected'} @:{'terms.glossary.period'}."
+          "xlvask_missing_order_link": "@:{'terms.glossary.xl'} @.capitalize:{'terms.glossary.vask'}-@:{'terms.glossary.registrierung'} @:{'terms.glossary.ist'} weder ignoriert noch @:{'terms.glossary.mit'} einer @:{'terms.glossary.bestellung'} im ausgewaehlten @:{'terms.glossary.zeitraum'} verknuepft."
         },
         "preview": {
           "entities": {

src/i18n/source/no/phrases/compat/invoice_period/flags.json

@@ -26,7 +26,7 @@
           "vehicle_subscription_type_mismatch": "{product} @:{'terms.glossary.does'} @:{'terms.glossary.not'} match @:{'terms.glossary.the'} @:{'terms.glossary.vehicle'} @:{'terms.glossary.subscription'} @:{'terms.glossary.type'} {expected_product}.",
           "wash_certificate_attached_without_item": "@.capitalize:{'terms.glossary.vaskesertifikat'} @:{'terms.glossary.er'} @:{'terms.glossary.vedlagt'} @:{'terms.glossary.uten'} @:{'terms.replication.host_definite_suffix'} @:{'terms.glossary.vaskesertifikat'}-@:{'terms.glossary.linje'}.",
           "wash_certificate_item_without_certificate": "@.capitalize:{'terms.glossary.vaskesertifikat'}-@:{'terms.glossary.linjen'} @:{'terms.glossary.finnes'} @:{'terms.glossary.uten'} @:{'terms.glossary.et'} @:{'terms.glossary.vaskesertifikat'}.",
-          "xlvask_missing_order_link": "@:{'terms.glossary.xl'} @.capitalize:{'terms.glossary.vask'} @:{'terms.glossary.wash'} @:{'terms.glossary.is'} neither ignored nor linked @:{'terms.glossary.to'} @:{'terms.glossary.an'} @:{'terms.glossary.order'} @:{'terms.glossary.in'} @:{'terms.glossary.the'} @:{'terms.glossary.selected'} @:{'terms.glossary.period'}."
+          "xlvask_missing_order_link": "@:{'terms.glossary.xl'} @.capitalize:{'terms.glossary.vask'}-registreringen @:{'terms.glossary.er'} verken ignorert @:{'terms.glossary.eller'} knyttet @:{'terms.glossary.til'} @:{'terms.replication.host_definite_suffix'} @:{'terms.glossary.ordre'} @:{'terms.glossary.i'} @:{'terms.replication.article.host_mention'} @:{'terms.glossary.valgte'} @:{'terms.glossary.periode'}."
         },
         "preview": {
           "entities": {

src/i18n/source/sv/phrases/compat/invoice_period/flags.json

@@ -26,7 +26,7 @@
           "vehicle_subscription_type_mismatch": "{product} @:{'terms.glossary.does'} @:{'terms.glossary.not'} @:{'terms.glossary.match'} @:{'terms.glossary.the'} @:{'terms.glossary.vehicle'} @:{'terms.glossary.subscription'} @:{'terms.glossary.type'} {expected_product}.",
           "wash_certificate_attached_without_item": "@.capitalize:{'terms.glossary.tvattcertifikat_2'} ar bifogat @:{'terms.glossary.utan'} @:{'terms.replication.host_definite_suffix'} tvattcertifikatrad.",
           "wash_certificate_item_without_certificate": "@:{'terms.glossary.tvattcertifikatraden'} @:{'terms.glossary.finns'} @:{'terms.glossary.utan'} @:{'terms.glossary.ett'} @:{'terms.glossary.tvattcertifikat_2'}.",
-          "xlvask_missing_order_link": "@:{'terms.glossary.xl'} @.capitalize:{'terms.glossary.vask'} @:{'terms.glossary.wash'} @:{'terms.glossary.is'} neither ignored nor @:{'terms.glossary.linked'} @:{'terms.glossary.to'} @:{'terms.glossary.an'} @:{'terms.glossary.order'} @:{'terms.glossary.in'} @:{'terms.glossary.the'} @:{'terms.glossary.selected'} @:{'terms.glossary.period'}."
+          "xlvask_missing_order_link": "@:{'terms.glossary.xl'} @.capitalize:{'terms.glossary.vask'}-registreringen @:{'terms.glossary.ar'} varken ignorerad @:{'terms.glossary.eller'} kopplad @:{'terms.glossary.till'} @:{'terms.replication.host_definite_suffix'} @:{'terms.glossary.order'} @:{'terms.glossary.i'} @:{'terms.replication.article.host_mention'} @:{'terms.glossary.valda'} perioden."
         },
         "preview": {
           "entities": {

tests/unit/i18n-xlvask-review-coverage.spec.js

@@ -0,0 +1,59 @@
+// Regression guard for TRU-13 / AUT-9: every `invoicing_period.xlvask_review.*`
+// key that exists in the da reference catalogue must also be present in
+// the other active locales (no, sv, de, en) with a non-empty translation.
+// The end-to-end integrity suite already enforces global key parity, but
+// this targeted test documents the acceptance criteria for the xlvask_review
+// translation work and surfaces locale-specific gaps immediately.
+import { readFileSync } from "node:fs";
+import { join } from "node:path";
+import { describe, expect, it } from "vitest";
+
+const root = process.cwd();
+const activeLocales = ["da", "no", "sv", "de", "en"];
+const reviewFileFor = (locale) =>
+  join(root, `src/i18n/source/${locale}/phrases/compat/invoicing_period/xlvask_review.json`);
+
+const flattenPairs = (node, prefix = "") => {
+  if (typeof node === "string") {
+    return [{ key: prefix, value: node }];
+  }
+  if (!node || typeof node !== "object" || Array.isArray(node)) {
+    return [];
+  }
+  return Object.entries(node).flatMap(([key, value]) => {
+    const nextPrefix = prefix ? `${prefix}.${key}` : key;
+    return flattenPairs(value, nextPrefix);
+  });
+};
+
+const readReviewSection = (locale) => {
+  const file = JSON.parse(readFileSync(reviewFileFor(locale), "utf8"));
+  return file?.compat?.invoicing_period?.xlvask_review ?? {};
+};
+
+describe("xlvask_review translation coverage", () => {
+  it("covers every da xlvask_review key in no, sv, de, en with a non-empty value", () => {
+    const daEntries = flattenPairs(readReviewSection("da"));
+    expect(daEntries.length, "da xlvask_review should expose translatable strings").toBeGreaterThan(0);
+
+    for (const locale of activeLocales.filter((entry) => entry !== "da")) {
+      const localeEntries = new Map(flattenPairs(readReviewSection(locale)).map((entry) => [entry.key, entry.value]));
+
+      const missing = [];
+      const empty = [];
+      for (const { key } of daEntries) {
+        if (!localeEntries.has(key)) {
+          missing.push(key);
+          continue;
+        }
+        const localized = localeEntries.get(key);
+        if (typeof localized !== "string" || localized.trim().length === 0) {
+          empty.push(key);
+        }
+      }
+
+      expect(missing, `${locale} xlvask_review keys missing from da`).toEqual([]);
+      expect(empty, `${locale} xlvask_review keys with empty translations`).toEqual([]);
+    }
+  });
+});