Add quiet hours, fix Telegram bugs, and improve cache performance

- Add quiet hours support to queue notifications during configured time windows
- Fix UnboundLocalError when single-item document chunk exceeds max_asset_data_size
- Fix document-only multi-item chunks being silently dropped (missing skip guard)
- Fix notification queue entity lookup by storing entity_id in queued params
- Fix quiet hours using OS timezone instead of HA-configured timezone (dt_util.now)
- Fix chat_action schema rejecting empty string from "Disabled" selector
- Fix stale thumbhash cache entries not being removed on mismatch
- Fix translation descriptions for send_large_photos_as_documents
- Add batch async_set_many() to TelegramFileCache to reduce disk writes
- Add max-entries eviction (2000) for thumbhash cache to prevent unbounded growth
- Eliminate redundant _is_asset_id/get_asset_thumbhash lookups in media group loop

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

custom_components/immich_album_watcher/const.py

@@ -15,6 +15,8 @@ CONF_ALBUM_NAME: Final = "album_name"
 CONF_SCAN_INTERVAL: Final = "scan_interval"
 CONF_TELEGRAM_BOT_TOKEN: Final = "telegram_bot_token"
 CONF_TELEGRAM_CACHE_TTL: Final = "telegram_cache_ttl"
+CONF_QUIET_HOURS_START: Final = "quiet_hours_start"
+CONF_QUIET_HOURS_END: Final = "quiet_hours_end"
 
 # Subentry type
 SUBENTRY_TYPE_ALBUM: Final = "album"