Open Tag demo GIF assets

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Hosting issue for Open Tag demo GIF assets.\n\nAssets in this issue:\n- Step 1: PR review delegation demo\n- Step 2: Slack-only follow-up demo

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Open Tag demo GIFs

Two-step Open Tag demo: PR review delegation followed by Slack-only follow-up.

Step 1: PR review delegation

Step 2: Slack-only follow-up