feat(learn): add reverse and dictation modes for card review

- Add reverse mode to swap card front/back
- Add dictation mode with TTS audio playback and answer verification
- Add i18n translations for new features in all 8 languages
- Integrate useAudioPlayer hook for TTS playback

messages/ug-CN.json

@@ -226,7 +226,14 @@
       "cardTypeNew": "يېڭى",
       "cardTypeLearning": "ئۆگىنىۋاتىدۇ",
       "cardTypeReview": "تەكرارلاش",
-      "cardTypeRelearning": "قايتا ئۆگىنىش"
+      "cardTypeRelearning": "قايتا ئۆگىنىش",
+      "reverse": "ئەكسى",
+      "dictation": "ئاڭلاپ يېزىش",
+      "clickToPlay": "چېكىپ قويۇش",
+      "yourAnswer": "سىزنىڭ جاۋابىڭىز",
+      "typeWhatYouHear": "ئاڭلىغىنىڭىزنى كىرگۈزۈڭ",
+      "correct": "توغرا",
+      "incorrect": "خاتا"
     },
     "page": {
       "unauthorized": "بۇ دېكنى زىيارەت قىلىش ھوقۇقىڭىز يوق"