Catalog previews for heygen-avatar-promo-card and slack-notification-ad return HTTP 403 (missing CDN objects)

[AL-knows]

Describe the bug

The two catalog blocks added in PR #3279 (heygen-avatar-promo-card, slack-notification-ad) reference preview media objects on the docs CDN that return HTTP 403. Both official catalog pages load, but their embedded preview videos fail to play (readyState=0, MEDIA_ERR_SRC_NOT_SUPPORTED) because the referenced .mp4/.png objects are not served.

Link to reproduction

The defect is in the hosted CDN objects, not the local toolchain, so the official pages themselves are the reproduction:

• https://hyperframes.heygen.com/catalog/blocks/heygen-avatar-promo-card
• https://hyperframes.heygen.com/catalog/blocks/slack-notification-ad

Steps to reproduce

1. Open either catalog page above.
2. The embedded preview video fails to load (readyState=0, MEDIA_ERR_SRC_NOT_SUPPORTED).
3. GET the four preview objects directly — each returns HTTP 403.

Expected behavior

The four preview objects should be published at their source-declared URLs with the expected content types:

1. https://static.heygen.ai/hyperframes-oss/docs/images/catalog/blocks/heygen-avatar-promo-card.mp4 — expect video/mp4
2. https://static.heygen.ai/hyperframes-oss/docs/images/catalog/blocks/heygen-avatar-promo-card.png — expect image/png
3. https://static.heygen.ai/hyperframes-oss/docs/images/catalog/blocks/slack-notification-ad.mp4 — expect video/mp4
4. https://static.heygen.ai/hyperframes-oss/docs/images/catalog/blocks/slack-notification-ad.png — expect image/png

Actual behavior

All four return HTTP 403 (application/xml, Error from cloudfront).

For comparison, an established block's previews serve correctly:

• https://static.heygen.ai/hyperframes-oss/docs/images/catalog/blocks/vfx-shatter.mp4 → HTTP 200 (video/mp4)
• https://static.heygen.ai/hyperframes-oss/docs/images/catalog/blocks/vfx-shatter.png → HTTP 200 (image/png)

Likely cause

PR #3279 added the two blocks but the docs-image upload step was not run for them. Per the workflow in PR #301 (docs/images/ → static.heygen.ai CDN), after adding a catalog block a maintainer must run the catalog-preview generation and docs-image upload step (e.g. bun run generate:catalog-previews --only <name> then bun run upload:docs-images) to publish the preview objects; that step appears to have been skipped for these two blocks.

Request: please run the upload step for the two new blocks so the four objects above are served with the expected content types.

Environment

N/A — the defect is on the hosted CDN/docs side, not the local toolchain.