V1.4.0

What's Changed

• feat(display): add and refine browser-based main and cluster displays, including touch input, connection diagnostics, and an improved playback pipeline
• fix(audio): improve CarPlay audio buffering and Android audio-focus handling
• fix(vpn): restrict the VpnService TUN interface to the app package to prevent car-wide internet loss by [@yanwuu](https://github.com/yanwuu) in [#37](#37)
• fix(ui): correct the application theme configuration

New features

• Add browser-based main and cluster displays for CarPlay, with touch input support.
• Introduce connection status, handshake diagnostics, session logs, and a smoother display playback experience.

Bug fix:

• Prevent the wired CarPlay VPN tunnel from routing traffic for the entire head unit; it is now limited to xcertplay, preserving network access for system and third-party apps.
• Improve audio-buffer sourcing and Android audio-focus handling during CarPlay playback.
• Correct the application theme configuration.