Allow setting sandbox start params in dashboard terminal en 1363

[matthewlouisbrockman]

No description provided.

[linear-code]

EN-1363

[vercel]

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Project	Deployment	Actions	Updated (UTC)
web	Ready	Preview, Comment	Jun 30, 2026 2:18am

[cursor]

PR Summary

Medium Risk
PTY user and environment variables affect sandbox process context; URL-driven values require explicit confirmation but misconfiguration could still change runtime behavior on reconnect.

Overview
Dashboard terminal and sandbox terminal accept user, cwd, and repeated env query params; /dashboard?tab=terminal and sign-in return URLs preserve them. Those params become TerminalPtyOptions on launch, and presence of any PTY param forces a confirmation step before connect (command optional).

PTY create no longer hardcodes /home/user; options from stored defaults (cookie on sandbox terminal), launch target, or the PTY settings UI are spread into sandbox.pty.create. Sandbox-scoped terminal enables configure-PTY in the panel and reconnect on apply.

Browser envd clients rewrite sandboxUrl to the 49983-{sandboxId}. host prefix via resolveBrowserSandboxUrl.

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[cursor]

Cursor Bugbot has reviewed your changes and found 3 potential issues.

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^{Reviewed by Cursor Bugbot for commit 0549cc6. Configure here.}