docs: desktop app references still mention Tauri instead of Electron

[imduchuyyy]

Description

README files and CONTRIBUTING.md still reference Tauri for the desktop app (old artifact names like darwin-aarch64, Tauri dev commands) even though the desktop app now uses Electron.

Steps to reproduce

1. Open README.md and look at the Desktop App table - filenames use darwin-aarch64/darwin-x64
2. Open CONTRIBUTING.md "Running the Desktop App" section - references tauri dev and tauri build commands
3. Compare with actual release assets which use mac-arm64/mac-x64 naming from electron-builder

[github-actions]

This issue appears to be a duplicate of #25966, which was submitted by the same author with an identical title and description.

Please check #25966 for context. If that issue was closed incorrectly, please ask a maintainer to reopen it rather than filing a new one.