Team Ender Chest
- Shared team ender chest in /teams GUI (slot 50, before home)
- New role permission enderchest (default: owner, admin, mod)
- Config: enderchest.rows (1–6), enderchest.cooldown-seconds (optional)
- Dupe protection: cache cleared only after save, item snapshot before async save, shutdown flush and more
added Placeholders:
%perfteams_team_name% – Team name with color (legacy format)
%perfteams_team_name_raw% – Plain team name
%perfteams_team_color% – Team color hex
%perfteams_team_role% – Player's role in team
%perfteams_team_members% – Member count
%perfteams_team_owner% – Team owner name
