* fix: resolve Linux window close handler to prevent app hang
- Add delete-event callback that properly quits the application when window is closed
* feat: Add desktop scaling and fix linux postinst
- Implement desktop interface scaling in main.dart using FittedBox.
- Add desktop scaling setting UI.
- Add desktopScale to storage preference.
- Fix typos and logic in Linux postinst script.
- Update piliplus.desktop with StartupWMClass.
* update
Signed-off-by: dom <githubaccount56556@proton.me>
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Signed-off-by: Shao Guohao <shao.gh.98@gmail.com>
Co-authored-by: dom <githubaccount56556@proton.me>
