The Settings pane stacked the Emulator selector and Line spacing under one "Terminal" heading, implying line spacing applied to whichever emulator was active. It is xterm.js-only (libghostty has no line-height knob). Split it into the Emulator section plus a new section holding options for the selected emulator only: line spacing under xterm.js; libghostty shows a muted empty state until it has options of its own. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01GBWyw3DyRvvNmgJpFZBsC5