| # X Card Deployment Checklist — False Closure / Open Loop Simulator |
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| Use this exact public page URL when posting to X: |
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| ```text |
| https://huggingface.co/spaces/HirModel/false-closure-open-loop-simulator |
| ``` |
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| If X keeps showing an old/default card, use this cache-busting version in the post instead. It still opens the same HF Space: |
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| ```text |
| https://huggingface.co/spaces/HirModel/false-closure-open-loop-simulator?v=014-card |
| ``` |
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| 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. |
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| Files that must be committed to the Space root: |
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| - `README.md` |
| - `index.html` |
| - `thumbnail.png` |
| - `false-closure-open-loop-thumbnail-v0-1-4.png` |
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| Root README frontmatter must contain: |
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| ```yaml |
| thumbnail: https://huggingface.co/spaces/HirModel/false-closure-open-loop-simulator/resolve/main/false-closure-open-loop-thumbnail-v0-1-4.png |
| ``` |
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| After upload, open the thumbnail URL directly in a private/incognito browser tab. If it loads publicly, X can fetch it. |
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