Step 2 (싱글/멀티): replace auto-advance with a card selection plus a
"다음" button so the user can review their choice before moving on.
Step 4-1 (모드 플랫폼): replace the "설치 / 건너뛰기" buttons with two
cards — "권장 플랫폼 설치" and "기본 마인크래프트로 설치". Selection
only records intent; the actual platform install fires in 4-2 along
with mods/resourcepacks (already handled by installer:client install).
Server: default HOST to 127.0.0.1 instead of 0.0.0.0 so the startup
log prints a Ctrl+클릭으로 바로 열 수 있는 URL. Set HOST=0.0.0.0
externally when public exposure is needed.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>