v1.0.5: Developer ID signing and Apple notarization

Replace ad-hoc signing with Developer ID + Apple notarization

Add quarantine removal for Gatekeeper warning fix

v1.0.4: Add ad-hoc code signing to fix Keychain prompt

Add ad-hoc code signing to fix repeated Keychain permission prompt

v1.0.3: Dismiss popover on outside click, auto-quit on update download

v1.0.2: Add hover glow effect on popover cards, dynamic settings window sizing

v1.0.1: Add app icon, colored status bar toggle, fix per-section coloring

Update README.md

Update README: add DMG install method, refresh feature list

Fix release workflow: add contents write permission

Add GitHub Actions workflow for DMG release

Refactor settings to tabbed UI with info/display/general tabs

Update README: separate Korean and English sections

Add README with Korean/English documentation