[CruxExperts]

Summary

• Add a 15-second animated README preview linked to the full Codex terminal companion demo.
• Host the approved media in the dedicated public LocalSetup CDN bucket while keeping the shared system bucket private.
• Run up to four CI shards concurrently on the observed four-core runner, with each shard requesting four workers and a matching CPU quota on its own isolated runner, bounded by native resource limits.
• Recognize newer Git's invalid Git-file diagnostic outside the current filesystem discovery boundary, while rejecting invalid markers inside it.
• Prepare the 4.89.8 release record, guide, and canonical version sync.

Verification

• Anonymous HTTPS downloads returned the GIF and MP4 with the expected media types and exact SHA-256 hashes recorded in the release guide; a video range request returned HTTP 206.
• The shared system bucket still returned HTTP 403.
• publish-preflight --fix, release-docs check, documentation alignment, 149 focused CI/resource tests, a four-worker sharded test, focused Git boundary tests, strict branding, catalog validation, package-surface validation, and git diff --check passed locally.
• All commits are OpenPGP-signed. Hosted exact-commit checks are pending.

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