Lint runs were emitting `ls: cannot access '.../ci/*values.yaml'` for
charts that do not define CI override files (e.g.
`charts/stable/friendica`). The issue came from using `ls` as a glob
existence check in `tc-lint.sh`.
- **Root cause**
- `helm_lint()` used `ls $chart_path/ci/*values.yaml` inside a
conditional; when the glob had no matches, `ls` printed an error.
- **Change**
- Replaced the `ls`-based check with a silent glob match check using
`compgen -G`.
- Scope is limited to `.github/scripts/tc-lint.sh` and preserves
existing lint decision logic.
- **Behavioral impact**
- Charts without `ci/*values.yaml` no longer produce noisy shell errors
during lint.
- Existing lint pass/fail behavior remains unchanged.
```bash
# before
if [[ ! $(ls $chart_path/ci/*values.yaml) ]]; then
# after
if ! compgen -G "$chart_path/ci/*values.yaml" >/dev/null; then
```
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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: PrivatePuffin <7613738+PrivatePuffin@users.noreply.github.com>
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