Kelsi 8a468e9533 Add mailbox system and fix logging performance stutter ... Implement full mail send/receive: SMSG_SHOW_MAILBOX, CMSG_GET_MAIL_LIST, SMSG_MAIL_LIST_RESULT, CMSG_SEND_MAIL, SMSG_SEND_MAIL_RESULT, mail take money/item/delete/mark-as-read, and inbox/compose UI windows. Fix periodic stuttering in Stormwind caused by synchronous per-line disk flushes in the logger — remove fileStream.flush() and std::endl, downgrade high-volume per-packet/per-model/per-texture LOG_INFO to LOG_DEBUG.		2026-02-15 14:00:41 -08:00
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expansions	Add mailbox system and fix logging performance stutter	2026-02-15 14:00:41 -08:00