Forever QuickJoin v0.6.5

• Suppressed duplicate class labels when the server reports the class name as the specialization.
• Kept Whisper to Join anchored in the listing header when expanded, remaining clickable with the roster open.
• Added collapsible Advanced Filters, including class exclusions based on actual member data, playstyle, maximum group member count, descriptions-only, and whisperable-leader filters.
• Treat unreadable member classes conservatively by default, with an explicit opt-in for including unknown rosters.
• Saved advanced filters per character, merged standard and advanced Clear actions, and hid the filter panel when switching to hosting.
• Verified via Lua 5.4 simulated in-game tests, including raid expansion, protected-action avoidance, and live whisper button interaction.