Automated desktop package release.

• Source: https://github.com/AstrBotDevs/AstrBot.git
• Ref: v4.27.3
• Mode: tag-poll
• Windows package formats: nsis installer and portable zip.
• Windows portable zip uses manual replacement updates and requires WebView2 to already exist on the host.

What's Changed

• feat(metrics): mark desktop installation source by @Soulter in #164
• feat: deliver desktop updates through Cloudflare R2 by @Soulter in #165
• feat: add passwordless desktop authentication by @Soulter in #166
• fix: disable Tauri drag-drop handler to restore HTML5 file drag-and-drop in WebView by @zouyonghe with @Copilot in #168

New Contributors

• @Soulter made their first contribution in #164
• @zouyonghe with @Copilot made their first contribution in #168

Full Changelog: v4.27.2...v4.27.3