refactor(field-labels): read the label languages off the spec instead of mirroring them by hand

The list carried a comment saying it mirrors the locale files, which is the
shape that goes stale: an eighth language would generate no labels and raise
nothing, so its fields would render in English with every gate green. The spec
lang enum already decides the set, and the locale suite is already checked
against it. Same seven languages, byte-identical output.

Author: ph33nx

scripts/sync-field-labels.ts

@@ -24,12 +24,20 @@
  */
 import { existsSync } from 'node:fs';
 import { mkdir, writeFile } from 'node:fs/promises';
+import { API_LANGUAGES } from '../packages/ui/src/generated/api-languages.js';
 
 const API_BASE = process.env.ROXY_API_BASE ?? 'https://roxyapi.com/api/v2';
 const OUT_DIR = 'packages/ui/src/locales/field-labels';
 
-/** Mirrors the locale files that exist; English is deliberately absent (it needs no payload). */
-const LANGS = ['de', 'es', 'fr', 'hi', 'pt', 'ru', 'tr'] as const;
+/**
+ * Derived from the spec, never mirrored by hand. English is absent because it needs no payload.
+ *
+ * @remarks
+ * A hand-kept copy is checked against itself, and the language somebody forgets to add to it is
+ * the one that then ships with unlabelled fields and no error anywhere (lesson 23). `lang` on the
+ * spec is the only place the set is decided, so read it from there.
+ */
+const LANGS = API_LANGUAGES.filter((l) => l !== 'en');
 
 interface LabelPayload {
 	fields?: Record<string, string>;