ci: Fix shard info meta-data and add bin/ci-shards#37866
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Sharded jobs record the workflows/files they ran in build meta-data under "Shard for <job label>". Accumulate items across shard_list calls so workflows that shard multiple lists (e.g. sqllogictest's steps) no longer overwrite their own entry. The label alone is a unique key since mkpipeline appends the shard number to parallel steps. Add bin/ci-shards to show the mapping: pass a Buildkite build URL to list every sharded job with its items, a job link for that job's items, or additionally a file/scenario/workflow name to find the job(s) that ran it. Document it in the mz-debug-ci skill. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CeY7DEyG9nLDzbMHFBgt2r
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Sharded jobs record the workflows/files they ran in build meta-data under "Shard for ". Accumulate items across shard_list calls so workflows that shard multiple lists (e.g. sqllogictest's steps) no longer overwrite their own entry. The label alone is a unique key since mkpipeline appends the shard number to parallel steps.
Add bin/ci-shards to show the mapping: pass a Buildkite build URL to list every sharded job with its items, or a job link for that job's items. Document it in the mz-debug-ci skill.
https://materializeinc.slack.com/archives/C01LKF361MZ/p1784895664071619