Fix-shellcheck-errors-from-deepsource

Editor assessment

The subject is understandable, shellcheck errors flagged by DeepSource were fixed, and the infra scope is apt, but the kebab-case description reads like a branch name pasted into a commit subject, an unusual stylistic choice that hurts scan-ability and reads oddly in a changelog. No body, which is tolerable for lint cleanup, though noting which scripts were touched would have cost one line. Chore is the right type for the work. Hygiene otherwise fine: short, period-free, no junk. Valid and clear enough, but stylistically careless.