[1] Fixed critical server watchdog timeout - removed CompletableFuture.join() blocking main thread in getPlayerTeam() method
[2] Fixed player quit crashes - unloadPlayer() now fully asynchronous to prevent database overload during mass disconnects
[3] Eliminated console spam - backup snapshot messages reduced from INFO to FINE logging level (only visible with debug enabled)
[4] Optimized player disconnect handling - team cache cleanup now runs asynchronously to prevent server thread blocking
[5] Fixed race conditions during concurrent player quits - synchronized cache access prevents data corruption
[6] Added Team Alliances System - complete ally management with GUI, commands, and cross-server synchronization
[7] Added /team ally command with 7 subcommands - add, remove, accept, deny, toggle, list, and GUI access
[8] Added Ally GUI - intuitive interface for managing alliances and viewing pending requests
[9] Added EternalCombat integration - prevents combat-tagged players from exploiting team commands via reflection-based hook
[10] Added configurable combat restrictions - 9 separate toggles for blocking actions during combat (teleport, leave, disband, etc.)
[11] Added combat tag messages - shows remaining combat time when actions are blocked
[12] Added database tables - donut_team_allies and donut_team_ally_requests with automatic migration
[13] Added 27 new messages - 17 for ally system, 10 for combat integration
[14] Added full tab completion - ally commands with subcommand and team name suggestions
[15] Optimized database queries - indexed ally tables prevent performance degradation
[16] Fixed potential memory leaks - proper cleanup in async operations and hook shutdown
[17] Added validation-first approach - all ally operations validate before database writes
[18] Enhanced cross-server sync - ally changes propagate via Redis/MySQL to all servers
[19] Fixed team uncaching logic - prevents premature cache eviction when players quit