GHSA-37J4-88RP-2F6H Electerm's full process.env exposed to renderer via window.pre.env

Impact The getConstants IPC handler in src/app/lib/ipc-sync.js serialises the entire process.env object and sends it to the renderer. The data is stored as window.pre.env and is accessible from any JavaScript running in the renderer e.g., via the DevTools console or a compromised webview context...