[1] Fixed critical teleport warmup bug - running `/team home` or `/team warp` twice before warmup completes no longer orphans tasks and blocks future teleports
[2] Added proper task cancellation logic - existing warmup tasks are now cancelled before creating new ones, preventing task tracking corruption
[3] Fixed `<team_color>` placeholder in team chat - now outputs valid MiniMessage color tags (`<dark_red>`, `<blue>`, etc.) instead of plain text color names
[4] Converted ChatColor enum to MiniMessage format across all chat handlers - team colors now display correctly in chat messages
[5] Fixed team color display in TeamChatListener - local team chat now properly renders team colors set via `/team setcolor`
[6] Fixed team color display in TeamMessageCommand - `/tm` command now properly renders team colors in cross-server environments
[7] Fixed team color display in Redis cross-server chat - TeamMessageSubscriber now converts ChatColor to MiniMessage tags for Redis-based team chat
[8] Fixed team color display in MySQL cross-server chat - TeamManager now converts ChatColor to MiniMessage tags for MySQL-based team chat synchronization
[9] Enhanced warmup cancellation feedback - players now receive "teleport_cancelled" message when spamming teleport commands
[10] Applied teleport fix to all three warmup methods - `initiateLocalTeleport()`, `startNamedWarpTeleportWarmup()`, and `startWarpTeleportWarmup()` all properly cancel existing tasks