Исправление media path: убрано двойное media, правильный HA API

— Default archive_path: 'media/RTKey' → 'RTKey' (без дублирования /media/media/)
— Fallback: '/media' → hass.config.path('media') (HA API вместо hardcoded)
— Поддержка ключа 'local' в media_dirs (если 'media' отсутствует)
— Обновлены подсказки в переводах en/ru

custom_components/rtkey/translations/en.json

@@ -24,7 +24,7 @@
         "data_description": {
           "token": "Get token via browser developer tools (F12) on key.rt.ru",
           "camera_image_refresh_interval": "0 — disable periodic screenshots",
-          "archive_path": "Relative to /media/ folder (e.g.: RTKey)",
+          "archive_path": "Subfolder name inside HA media folder (e.g.: RTKey)",
           "archive_copies": "Maximum number of saved videos per intercom",
           "archive_duration": "Duration of archived video fragment per event",
           "screenshot_copies": "Maximum number of saved screenshots per intercom"
@@ -57,7 +57,7 @@
         "data_description": {
           "token": "Get token via browser developer tools (F12) on key.rt.ru",
           "camera_image_refresh_interval": "0 — disable periodic screenshots",
-          "archive_path": "Relative to /media/ folder (e.g.: RTKey)",
+          "archive_path": "Subfolder name inside HA media folder (e.g.: RTKey)",
           "archive_copies": "Maximum number of saved videos per intercom",
           "archive_duration": "Duration of archived video fragment per event",
           "screenshot_copies": "Maximum number of saved screenshots per intercom"