fix(core): background long-running shell commands - #50276

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The following comment was made by an LLM, it may be inaccurate:

@rekram1-node could you review this? It moves shell commands to the background after five seconds while preserving explicit timeouts.

Added Fixes #50278, but needs:issue remains because the check uses closingIssuesReferences and this PR targets v2 rather than the default branch. Could you link the issue manually or clear the label?

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