fix(desktop): strip AppImage ARGV0 before child shells (#2588)

AppImage exports ARGV0 into the process environment. zsh treats that as
argv[0] for every external command, which broke Python venv detection in
the integrated terminal and managed OpenCode sessions.

Clear ARGV0 in Electron before login-shell probing, refuse to re-apply it
from shell snapshots, and strip it from terminal PTY and managed OpenCode
launch environments.

Co-authored-by: Serhii Dziupin <makeittech@users.noreply.github.com>

packages/web/server/lib/inherited-env.js

@@ -0,0 +1,23 @@
+/**
+ * Sanitize environment objects inherited by user-facing child processes.
+ *
+ * Linux AppImage runtimes export `ARGV0` as the AppImage path before launching
+ * the packaged app. zsh treats an exported `ARGV0` as the argv[0] for every
+ * external command it spawns, which corrupts Python venv detection and any
+ * other program that reads argv[0]/$0 while leaving `/proc/self/exe` correct.
+ *
+ * See openchamber/openchamber#2588 and pingdotgg/t3code#2509.
+ */
+
+/**
+ * Remove AppImage `ARGV0` from a mutable env object (or `process.env`).
+ * @param {NodeJS.ProcessEnv | Record<string, string | undefined> | null | undefined} env
+ * @returns {typeof env}
+ */
+export function stripAppImageArgv0Leak(env) {
+  if (!env || typeof env !== 'object') return env;
+  if (Object.prototype.hasOwnProperty.call(env, 'ARGV0')) {
+    delete env.ARGV0;
+  }
+  return env;
+}