X_CARD_DEPLOYMENT_CHECKLIST.md

# X Card Deployment Checklist — False Closure / Open Loop Simulator

Use this exact public page URL when posting to X:

```text
https://huggingface.co/spaces/HirModel/false-closure-open-loop-simulator
```

If X keeps showing an old/default card, use this cache-busting version in the post instead. It still opens the same HF Space:

```text
https://huggingface.co/spaces/HirModel/false-closure-open-loop-simulator?v=014-card
```

Do not attach the thumbnail image manually to the X post if you want the image itself to behave as the clickable link card. Paste the HF link and let X render the card preview in the composer.

Files that must be committed to the Space root:

- `README.md`
- `index.html`
- `thumbnail.png`
- `false-closure-open-loop-thumbnail-v0-1-4.png`

Root README frontmatter must contain:

```yaml
thumbnail: https://huggingface.co/spaces/HirModel/false-closure-open-loop-simulator/resolve/main/false-closure-open-loop-thumbnail-v0-1-4.png
```

After upload, open the thumbnail URL directly in a private/incognito browser tab. If it loads publicly, X can fetch it.