chore: bump version to 0.1.9

fix(ci): use ubuntu-22.04 + PipeWire PPA for GLIBC 2.35 compatibility

style: replace native select with custom dropdown for language switcher

fix(ci): use relative path in build-msix.sh for Windows CI compatibility

Git Bash on GitHub Actions resolves paths as /d/a/... which Node.js
cannot resolve. Use cd + relative require instead.

MarkerOn v0.1.5

feat: add About page with app info, author, and GitHub links

- New "关于" tab with centered icon, version, author, license, and links
- open_url command to launch external URLs in default browser
- Tray menu "关于" entry opens settings to About tab
- Sidebar icons unified to consistent 14px SVGs
- Remove redundant version display from sidebar footer
- Bump version to 0.1.4

chore: bump version to 0.1.3

chore: bump version to 0.1.2

chore: bump version to 0.1.1

MarkerOn v0.1.0