Adds a "白名单" item after "解除封禁" in the message-log context menu.
It extracts the IP from each selected log entry, asks for confirmation,
then adds it to the shared IPWhitelist singleton — which IOCPServer and
the DLL rate limiter already consult live — so the entry takes effect on
new connections immediately, without a restart. The whitelist is
persisted to settings\IPWhitelist the same way the Network dialog does.
- An IP already in the whitelist is reported as such and skipped.
- An IP in the IP blacklist (banned) is reported as banned and skipped,
rather than silently removed from the blacklist.
- Menu item, confirmation, and result strings are added to the
en_US/zh_TW/de_DE language files.
Co-Authored-By: deepseek-v4-pro
