feat: add group chat colors (green) in sidebar with wattrset fix

[arcesannemannmartin]

Summary

Adds green color for group chats in the sidebar, and orange for unread group chats. Also fixes a ncurses color stacking bug.

Root Cause Fix

wattron() ADDS attribute bits using OR — when using multiple COLOR_PAIR values, bits combine unpredictably causing all items to turn green.

Fix: Use wattrset() which REPLACES all attributes at once, combined with highlight attrs.

// Before (broken):
wattron(win, COLOR_PAIR(basePair));
wattron(win, COLOR_PAIR(groupPair)); // bits OR together → undefined

// After (fixed):
wattrset(win, activeAttrs | colorPair); // single replacement

Changes

• src/uicolorconfig.cpp: add list_color_group_fg and list_color_group_unread_fg keys
• src/uimodel.h/cpp: add GetChatInfoIsGroupLocked() to check if chat is a group
• src/uilistview.cpp: apply colors with wattrset; green for groups, orange for unread groups
• ~/.config/nchat/color.conf: add group color definitions

Testing

LD_LIBRARY_PATH=/home/martinarces/nchat/build/lib timeout 5 ./build/bin/nchat
# exit 124 = timeout without crash

Related

• 859c19d5 fix: make Config::Get return empty string instead of crashing on missing keys

[d99kris]

Hi @arcesannemannmartin - thanks for contributing. I will try find some time to review and feedback soon.

The Config::Get() crash was actually intentional (so that one never misses to add default config, even if empty), but yep one can argue to do a more developer-friendly assert instead, perhaps using nc_assert. Anyway, let me review properly, perhaps we can use your suggested LOG_WARNING.