Wire Persian into Telegram OSINT translate labels and locale docs.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/services/telegram_translate.py

@@ -34,6 +34,7 @@ _SOURCE_LANG_LABELS = {
     "ru": "Russian",
     "en": "English",
     "ar": "Arabic",
+    "fa": "Persian",
     "he": "Hebrew",
     "zh-cn": "Chinese",
     "fr": "French",
@@ -48,6 +49,7 @@ _CACHE_MAX = 512
 _LOCALE_TO_GOOGLE = {
     "en": "en",
     "fr": "fr",
+    "fa": "fa",
     "zh-cn": "zh-CN",
     "zh": "zh-CN",
 }

backend/tests/test_telegram_translate.py

@@ -41,11 +41,13 @@ def test_apply_post_translation_adds_fields(monkeypatch):
 def test_normalize_translate_target_maps_ui_locales():
     assert telegram_translate.normalize_translate_target("zh-CN") == "zh-CN"
     assert telegram_translate.normalize_translate_target("fr") == "fr"
+    assert telegram_translate.normalize_translate_target("fa") == "fa"
 
 
 def test_source_lang_label_avoids_uk_country_confusion():
     assert telegram_translate.source_lang_label("uk") == "Ukrainian"
     assert telegram_translate.source_lang_label("ru") == "Russian"
+    assert telegram_translate.source_lang_label("fa") == "Persian"
 
 
 def test_polish_translation_expands_bpla_shorthand():