## Summary
- Skip the unnecessary `isRunning()` API call and `wait(400)` when
`--follow` is not set in `sandbox logs`, preventing flaky timeouts in
the backend integration test
- Fix `waitForSandboxEnd` to return the `running` variable instead of
the `isRunning` function reference, so the follow-mode loop actually
terminates when the sandbox stops
<!-- CURSOR_SUMMARY -->
---
> [!NOTE]
> **Low Risk**
> Small control-flow fixes in the CLI logs loop and sandbox status
monitor; low blast radius with minimal behavioral change beyond making
termination conditions correct.
>
> **Overview**
> `sandbox logs` now breaks out immediately after printing the first
batch when `--follow` isn’t set, avoiding extra status polling/sleeps
that could cause flaky timeouts.
>
> Fixes `waitForSandboxEnd` to return the mutable `running` boolean
(instead of the `isRunning` function reference), so follow-mode loops
can actually stop when the sandbox exits.
>
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
87cd7af5b1bdf9a7a4fe16e7a2100256b3d55d7b. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->
Jakub Dobry
6798071059