How injection works

Klack uses a small bootstrap rather than disabling Electron’s renderer protections.

1. The installer renames Slack’s app.asar to _app.asar and puts a tiny bootstrap archive in its place.
2. On macOS, it updates Electron’s embedded ASAR-integrity metadata and ad-hoc signs the outer app while leaving Slack’s signed helpers and frameworks untouched.
3. The bootstrap starts Klack’s main-process patcher, redirects Electron to Slack’s original package, and wraps BrowserWindow.
4. Windows using Slack’s primary preload receive a generated file containing Klack followed by Slack’s exact original preload.
5. Klack injects the renderer and the compiled local plugin set before Slack finishes loading.