Fix SIGPIPE (exit 141) in install verification block

[Copilot]

Tools like terraform --version emit multiple lines. Piping through head -1 closes the read end of the pipe early, delivering SIGPIPE to the producer — fatal under set -eo pipefail (exit 141).

Changes

• install.d/30-mise.sh: Replace | head -1 with | sed -n '1p' for terraform, fastfetch, rg, and delta version checks; add comment explaining the reason

# head -1 exits early → SIGPIPE → exit 141 under pipefail
mise exec -- terraform --version | head -1   # before

# sed consumes all input before exiting → no SIGPIPE
mise exec -- terraform --version | sed -n '1p'  # after

Original prompt

Fix the failing GitHub Actions workflow Run test suite (Dockerfile)
Analyze the workflow logs, identify the root cause of the failure, and implement a fix.
Job ID: 64561145085
Job URL: https://github.com/andrejusk/dotfiles/actions/runs/22316048416/job/64561145085

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