publish-development-docs.sh: `|| true` masks aws s3 ls failures, risking truncated versions.json

[spike-rabbit]

Summary

In tools/release/publish-development-docs.sh, the S3 listing pipeline ends with || true:

aws s3 ls "s3://${VERSIONED_BUCKET_NAME}/" | grep "PRE v" | awk '{print $2}' | sed 's/\/$//' | sed 's/^v//' > s3-versions.txt || true

The script runs with set -euo pipefail. The || true is only needed so that grep returning exit 1 (no PRE v matches) does not abort the script. However, because it is attached to the whole pipeline, it also masks a failure of aws s3 ls itself (expired credentials, network error, missing permissions).

Impact

When aws s3 ls fails silently:

1. s3-versions.txt ends up empty.
2. generate-versions.js produces a versions.json with only the Development and root entries — all released versions dropped.
3. The script then uploads that file over the live s3://simpl-element-release/versions.json, breaking the version selector on the production documentation site.

Suggested fix

Split the listing from the filtering so a CLI failure aborts the script, while || true still only covers the harmless "grep found nothing" case:

aws s3 ls "s3://${VERSIONED_BUCKET_NAME}/" > s3-raw.txt
grep "PRE v" s3-raw.txt | awk '{print $2}' | sed 's/\/$//' | sed 's/^v//' > s3-versions.txt || true
rm s3-raw.txt

Notes

• The same pattern exists in the pre-existing tools/release/prepare-release.sh (S3 listing line) and could be fixed for consistency.
• Raised from review feedback on PR ci(docs): publish development docs from main to S3 #2238.