fix translations extracting

src/paths.js

@@ -50,17 +50,51 @@ const DIRS = {
   FAKE_STEAM: path.join(DATA, 'fake-steam')
 }
 
+// Bundled translation files are launcher-owned: on every start they are
+// refreshed in the portable files/translations folder WHENEVER THEIR CONTENT
+// CHANGED, so an update shipping new or changed keys reaches existing
+// installs too (the old copy-only-if-missing logic froze translations at the
+// version that happened to run first). Extra files in the target folder that
+// the bundle does not ship (user-added languages) are left untouched.
+function filesDiffer(a, b) {
+  try {
+    return !fs.readFileSync(a).equals(fs.readFileSync(b))
+  } catch {
+    return true // target missing/unreadable -> needs a (re)copy
+  }
+}
+
+function syncBundledTranslations(bundledDir, targetDir) {
+  let names = []
+  try {
+    names = fs.readdirSync(bundledDir)
+  } catch {
+    return 0
+  }
+  let updated = 0
+  for (const name of names) {
+    const src = path.join(bundledDir, name)
+    const dst = path.join(targetDir, name)
+    try {
+      if (!fs.statSync(src).isFile()) continue
+    } catch {
+      continue
+    }
+    if (!filesDiffer(src, dst)) continue
+    try {
+      fs.copyFileSync(src, dst)
+      updated++
+    } catch {}
+  }
+  return updated
+}
+
 function ensureDirs() {
   for (const dir of [FILES, DATA, DIRS.WINES, DIRS.PREFIXES, DIRS.APPS, DIRS.TRANSLATIONS, DIRS.FAKE_STEAM]) {
     fs.mkdirSync(dir, { recursive: true })
   }
   if (DIRS.TRANSLATIONS !== DIRS.BUNDLED_TRANSLATIONS) {
-    try {
-      for (const f of fs.readdirSync(DIRS.BUNDLED_TRANSLATIONS)) {
-        const dst = path.join(DIRS.TRANSLATIONS, f)
-        if (!fs.existsSync(dst)) fs.copyFileSync(path.join(DIRS.BUNDLED_TRANSLATIONS, f), dst)
-      }
-    } catch {}
+    syncBundledTranslations(DIRS.BUNDLED_TRANSLATIONS, DIRS.TRANSLATIONS)
   }
 }
 
@@ -95,4 +129,4 @@ function writeJson(file, data) {
   fs.renameSync(tmp, file)
 }
 
-module.exports = { RESOURCES, APP_ROOT, BUILD, FILES, DATA, DIRS, ensureDirs, readJson, writeJson, toPortablePath, resolvePortablePath }
+module.exports = { RESOURCES, APP_ROOT, BUILD, FILES, DATA, DIRS, ensureDirs, syncBundledTranslations, readJson, writeJson, toPortablePath, resolvePortablePath }