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/terminal/runtime.js

@@ -10,6 +10,7 @@ import {
 import { sanitizeTerminalHistoryChunk } from './history.js';
 import { consumeTerminalThemeQueries, terminalThemeModeReport } from './theme-response.js';
 import { createTerminalShellResolver, getTerminalShellLoginArgs, normalizeTerminalShell } from './shells.js';
+import { stripAppImageArgv0Leak } from '../inherited-env.js';
 
 const MAX_SESSIONS = 20;
 const MAX_HISTORY_BYTES = 512 * 1024;
@@ -66,6 +67,8 @@ export function createTerminalRuntime({
         // required because bun-pty also inherits Bun's native process environment.
         env.NODE_CHANNEL_FD = '';
         delete env.BASH_XTRACEFD; delete env.BASH_ENV; delete env.ENV; delete env.ELECTRON_RUN_AS_NODE;
+        // AppImage exports ARGV0; zsh would otherwise rewrite argv[0] for every command (#2588).
+        stripAppImageArgv0Leak(env);
         const options = { name: 'xterm-256color', cwd, cols, rows, env, ...(process.platform === 'win32' ? { useConpty: true } : {}) };
         return { process: provider.spawn(executable, args, options), backend: provider.backend, shell: resolvedShell.id, loginShell };
       } catch (error) { lastError = error; }