fix: simplify hardRestart — remove helper script, spawn directly with EADDRINUSE retry

feat: SSE update progress + reliable restart on Windows

fix: dark mode tabs, StableText bilingual width, self-update reliability

fix: StableText uses both en+zh references for stable button width

fix: self-update restart with graceful close + 3s timeout fallback

fix: version display picks higher of git tag vs package.json

fix: version display uses git tag + remove inline-grid layout hack

fix: Electron OAuth login + i18n layout shift + update modal (#53)

fix: use getRootDir() for package.json in self-update detection

fix: semver comparison + timer cleanup in self-update

feat: auto-release pipeline + multi-mode update system + commit hash display

feat: GitHub Star badge + check-for-updates in dashboard header