Fix tput failures in CI/CD environments

[Copilot]

tput calls fail when TERM is unset or invalid (common in CI/CD), causing error output that breaks pipelines.

Changes

init.sh (color initialization)

• Check tput availability before use
• Suppress stderr on all tput invocations
• Fall back to empty strings when unavailable

helpers.sh (terminal dimensions)

• Fix command -v syntax to suppress stderr
• Suppress stderr on tput lines/cols calls

CI/CD regression test (extras/test-ci-compatibility.sh)

• Added automated test to prevent future regressions
• Tests library sourcing with TERM=dumb, TERM unset, and normal terminal
• Verifies no tput errors in output
• Integrated into GitHub Actions workflow

Example

Before:

# Fails with: "tput: No value for $TERM and no -T specified"
ncolors=$(tput colors)

After:

if command -v tput >/dev/null 2>&1; then
  ncolors=$(tput colors 2>/dev/null)
else
  ncolors=""
fi

Library now sources cleanly in headless environments while maintaining color support when available. Automated CI tests ensure this compatibility is maintained going forward.

Original prompt

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This section details on the original issue you should resolve

<issue_title>fails to run in CI/CD</issue_title>
<issue_description>A user ran a github action and there was an issue with running tput, which seems to stem from there being no tput command or maybe no actual terminal when running headless github action.

We should be able to use our fallback 'echo' solution in such an environment.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes fails to run in CI/CD #33

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[lunarcloud]

@copilot could you ensure the github action runs a small test to ensure we don't have future regressions in ci/cd compatibility?

[Copilot]

@copilot could you ensure the github action runs a small test to ensure we don't have future regressions in ci/cd compatibility?

Added CI/CD compatibility test in commit 7749c0c. The test verifies the library sources correctly with TERM=dumb, TERM unset, and normal terminal settings. It runs automatically in GitHub Actions on every PR and push to master to catch any future regressions.