Electron-based desktop client (Seanime Denshi)

[5rahim]

Checklist

• [x] I checked that this feature has not been requested before
• [x] I checked that this feature is not in the "Not planned" list
• [x] This feature will benefit the majority of users

Problem Description / Use Case

The current Tauri-based desktop app is less than adequate.

Pros:

• Smaller footprint

Cons:

• Reliance on OS browser engine
• On Windows, users may have uninstalled the browser engine
• Inconsistent behaviors across platforms (random issues and visual bugs)
• Doesn't work on some Linux distros

Proposed Solution

Move to a new Electron-based client.

Pros:

• Consistent rendering engine across platforms
• Dedicated built-in player for local media, torrent and debrid streaming without transcoding

Cons:

• Larger binary size
• Higher memory usage (TBD)

Migration plan:

• v2.10.0 - Tauri client: Notify users to migrate to the Denshi client with popups and banners
• v2.10.x - Tauri client: Disable self-updates, remove Tauri release.

TODO:

• [x] Electron-based app
• [ ] Custom Electron 36.x.x and Chromium 136.x.x.x build with support for HEVC and AC3
• [ ] Built-in player for direct stream
• [ ] Public test for updates
• [ ] Tests on Windows and Linux