Character System Expansion

Added /characters GUI for full character management

Added clickable character switching through GUI

Added character action menus with right-click interactions

Added per-character inventory saving

Added per-character armor saving

Added per-character chat mode saving

Added per-character chat color saving

Added per-character relations saving

Added per-character notes saving

Added per-character location saving

Added per-character metadata persistence

Added name masking system

Added active character status system

Removed /chatname in favor of full character integration

Renamed /chatuser to /characteruser

Relations Overhaul

Added full /relations GUI

Added relation action menus

Added pinned relations

Added relation sorting

Added unknown characters tab

Added hoverable private notes on relation heads

Writing System

Documents

Added /document create

Added document body prompt system

Added document signing

Added document renaming

Added /documents GUI

Added persistent document storage

Letters

Added /letter create

Added letter body prompts

Added sealed letters

Added recipient support

Added mail delivery integration

Journals

Added /journal create

Added writable book journal workflow

Added /journal save

Added /journals GUI

Added persistent journal storage

Mail

Added /mail

Added mailbox GUI

Added sending writing items between characters

Added persistent mailbox storage

Item System Expansion

Added item metadata system

Added /itemmeta set

Added /itemmeta get

Added /itemmeta remove

Added /itemmeta clear

Added Item Inspect GUI

GUI Expansion

Added /roleplayhelp GUI

Added categorized help pages

Added Writing category

Added GUI category

Added relation GUIs

Added character GUIs

Added document GUIs

Added journal GUIs

Added mailbox GUIs

Added Item Inspect GUIs

Added clickable menu navigation

Added hover descriptions throughout menus