install: generate flameshot.ini with idempotent guard

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

install.sh

@@ -40,6 +40,19 @@ default-timeout=4000
 """
 open(os.path.expanduser("~/.config/mako/config"), "w").write(config)
 PYEOF
+mkdir -p ~/.config/flameshot
+if [ ! -f ~/.config/flameshot/flameshot.ini ]; then
+    cat > ~/.config/flameshot/flameshot.ini <<'INI'
+[General]
+disabledTrayIcon=true
+showStartupLaunchMessage=false
+showHelp=false
+copyAndCloseAfterUpload=true
+uiColor=#81a2be
+contrastUiColor=#1d1f21
+contrastOpacity=190
+INI
+fi
 ln -sf "$(pwd)/gtklock/config.ini" ~/.config/gtklock/config
 ln -sf "$(pwd)/gtklock/style.css" ~/.config/gtklock/style.css
 ln -sf "$(pwd)/fish/config.fish" ~/.config/fish/config.fish