blog(agent-as-yjs-peer): "The Agent Is Just Another Peer" post + live demo

[waleedlatif1]

Summary

• New engineering post, "The Agent Is Just Another Peer" — how we stream an AI agent into a live collaborative (Yjs) document by making it an ordinary peer, and what turned out easy, hard, and surprising.
• Self-contained interactive demo (AgentPeerDemo): two peers editing one file at once, streamed once on scroll-in, styled entirely from the real editor's design tokens (collaboration caret, code chip, resource chrome). No shadows, no bespoke motion.
• Blog code blocks + inline code now render on the same surface/tokens as the in-app code editor (Code.Viewer + chipFieldSurfaceClass) instead of a force-dark wrapper — affects all posts.
• Post marked featured: true, which bumps Sim v0.5 out of the 3-card featured row by date.

Type of Change

• New feature (content / blog)

Testing

Tested manually: renders locally (post + index 200), typecheck + biome clean, and every technical claim in the post was verified against the actual implementation (apply-streamed-markdown.ts, converter.ts, markdown-parse.ts, and the collab tests).

Checklist

• Code follows project style guidelines
• Self-reviewed my changes
• Tests added/updated and passing
• No new warnings introduced
• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
docs	Skipped		Aug 4, 2026 11:15pm

[cursor]

PR Summary

Low Risk
Content and landing/blog presentation changes only; no auth, collaboration runtime, or data paths are modified.

Overview
Adds a new featured engineering post "The Agent Is Just Another Peer" (agent-as-yjs-peer) on streaming an AI agent into live Yjs collaboration, with FAQ metadata and a custom AgentPeerDemo MDX component that animates two independent peers (human + agent) typing into one document on scroll-in, using editor design tokens and stable visibility: hidden layout.

Registers the post’s component loader in registry.ts so AgentPeerDemo resolves in MDX.

Blog rendering (all posts): fenced code blocks now use Code.Viewer with chipFieldSurfaceClass instead of a forced-dark wrapper; inline code chips match the rich markdown editor surface; MDX styling switches from clsx to cn from @sim/emcn.

^{Reviewed by Cursor Bugbot for commit c50247f. Configure here.}

[greptile-apps]

Greptile Summary

The PR adds an engineering post about streaming an AI agent into a collaborative Yjs document, including an interactive two-peer animation. It also registers the post and updates shared MDX code rendering to use editor-aligned surfaces and tokens.

• Adds the “The Agent Is Just Another Peer” post and cover image.
• Adds and registers the AgentPeerDemo interactive component.
• Updates fenced and inline code styling across blog posts.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Important Files Changed

Filename	Overview
apps/sim/content/blog/agent-as-yjs-peer/components/agent-peer-demo.tsx	Adds the scroll-triggered two-peer editing demonstration; the previously reported missing-IntersectionObserver fallback is now guarded before animation state is cleared.
apps/sim/content/blog/agent-as-yjs-peer/index.mdx	Adds the new featured engineering article and embeds the interactive demonstration.
apps/sim/lib/content/code.tsx	Moves blog code blocks onto the shared editor-style surface and token set.
apps/sim/lib/content/mdx.tsx	Centralizes language mapping, adopts the shared class-name helper, and aligns inline-code styling with the editor.
apps/sim/lib/blog/registry.ts	Registers the new post’s custom component loader.

_{Reviews (5): Last reviewed commit: "fix(blog): guard agent demo rAF loop aga..." | Re-trigger Greptile}

[waleedlatif1]

@greptile

[waleedlatif1]

@cursor review

[cursor]

✅ Bugbot reviewed your changes and found no new issues!

Comment @cursor review or bugbot run to trigger another review on this PR

^{Reviewed by Cursor Bugbot for commit df54aa1. Configure here.}

[waleedlatif1]

@greptile

[waleedlatif1]

@cursor review

[waleedlatif1]

@greptile

[waleedlatif1]

@cursor review

[waleedlatif1]

@greptile

[waleedlatif1]

@cursor review

[cursor]

✅ Bugbot reviewed your changes and found no new issues!

Comment @cursor review or bugbot run to trigger another review on this PR

^{Reviewed by Cursor Bugbot for commit c51ece5. Configure here.}