feat: add automatic account cooldown recovery

Replace session-long account failure pauses with classified 15, 30, 60, and 120 minute cooldowns for temporary account problems. Keep credential, OTP, banned, and disabled states manual while ignoring unknown, file, network, hoster, and bare WAF errors. Reset escalation after confirmed uploads, deduplicate parallel failures, publish revisioned pause snapshots, and show a stable localized countdown with automatic reactivation.

tests/i18n.test.js

@@ -53,6 +53,19 @@ test('translates the account check timestamp label', () => {
   assert.equal(translateText('checked', 'de'), 'geprüft');
 });
 
+test('translates account cooldown and manual pause labels', () => {
+  const pairs = [
+    ['Pausiert – noch', 'Paused –'],
+    ['Pausiert – Aktion nötig', 'Paused – action required'],
+    ['Account automatisch wieder aktiv', 'Account automatically active again'],
+    ['Account wieder aktiv – nächste Batch verwendet ihn', 'Account active again – the next batch will use it']
+  ];
+  for (const [german, english] of pairs) {
+    assert.equal(translateText(german, 'en'), english);
+    assert.equal(translateText(english, 'de'), german);
+  }
+});
+
 test('translates the failure detail clipboard action', () => {
   assert.equal(translateText('Fehlerdetails kopieren', 'en'), 'Copy failure details');
   assert.equal(translateText('Failure details copied', 'de'), 'Fehlerdetails kopiert');