chore(backend): short circuit satellite sync when session cookie is present

[brkalow]

Description

Checklist

• pnpm test runs as expected.
• pnpm build runs as expected.
• (If applicable) JSDoc comments have been added or updated for any package exports
• (If applicable) Documentation has been updated

Type of change

• 🐛 Bug fix
• 🌟 New feature
• 🔨 Breaking change
• 📖 Refactoring / dependency upgrade / documentation
• other:

[changeset-bot]

🦋 Changeset detected

Latest commit: fdea1bf

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 10 packages

Name	Type
@clerk/backend	Minor
@clerk/agent-toolkit	Patch
@clerk/astro	Patch
@clerk/express	Patch
@clerk/fastify	Patch
@clerk/nextjs	Patch
@clerk/nuxt	Patch
@clerk/react-router	Patch
@clerk/tanstack-react-start	Patch
@clerk/testing	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[brkalow]

!snapshot

[vercel]

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

Project	Deployment	Review	Updated (UTC)
clerk-js-sandbox	Ready	Preview, Comment	Jan 7, 2026 4:26pm

[clerk-cookie]

Hey @brkalow - the snapshot version command generated the following package versions:

Package	Version
@clerk/agent-toolkit	0.2.9-snapshot.v20260107162622
@clerk/astro	3.0.0-snapshot.v20260107162622
@clerk/backend	3.0.0-snapshot.v20260107162622
@clerk/chrome-extension	3.0.0-snapshot.v20260107162622
@clerk/clerk-js	6.0.0-snapshot.v20260107162622
@clerk/dev-cli	1.0.0-snapshot.v20260107162622
@clerk/expo	3.0.0-snapshot.v20260107162622
@clerk/expo-passkeys	1.0.0-snapshot.v20260107162622
@clerk/express	2.0.0-snapshot.v20260107162622
@clerk/fastify	2.6.9-snapshot.v20260107162622
@clerk/localizations	4.0.0-snapshot.v20260107162622
@clerk/nextjs	7.0.0-snapshot.v20260107162622
@clerk/nuxt	2.0.0-snapshot.v20260107162622
@clerk/react	6.0.0-snapshot.v20260107162622
@clerk/react-router	3.0.0-snapshot.v20260107162622
@clerk/shared	4.0.0-snapshot.v20260107162622
@clerk/tanstack-react-start	1.0.0-snapshot.v20260107162622
@clerk/testing	2.0.0-snapshot.v20260107162622
@clerk/ui	1.0.0-snapshot.v20260107162622
@clerk/upgrade	2.0.0-snapshot.v20260107162622
@clerk/vue	2.0.0-snapshot.v20260107162622

Tip: Use the snippet copy button below to quickly install the required packages.
@clerk/agent-toolkit

npm i @clerk/agent-toolkit@0.2.9-snapshot.v20260107162622 --save-exact

@clerk/astro

npm i @clerk/astro@3.0.0-snapshot.v20260107162622 --save-exact

@clerk/backend

npm i @clerk/backend@3.0.0-snapshot.v20260107162622 --save-exact

@clerk/chrome-extension

npm i @clerk/chrome-extension@3.0.0-snapshot.v20260107162622 --save-exact

@clerk/clerk-js

npm i @clerk/clerk-js@6.0.0-snapshot.v20260107162622 --save-exact

@clerk/dev-cli

npm i @clerk/dev-cli@1.0.0-snapshot.v20260107162622 --save-exact

@clerk/expo

npm i @clerk/expo@3.0.0-snapshot.v20260107162622 --save-exact

@clerk/expo-passkeys

npm i @clerk/expo-passkeys@1.0.0-snapshot.v20260107162622 --save-exact

@clerk/express

npm i @clerk/express@2.0.0-snapshot.v20260107162622 --save-exact

@clerk/fastify

npm i @clerk/fastify@2.6.9-snapshot.v20260107162622 --save-exact

@clerk/localizations

npm i @clerk/localizations@4.0.0-snapshot.v20260107162622 --save-exact

@clerk/nextjs

npm i @clerk/nextjs@7.0.0-snapshot.v20260107162622 --save-exact

@clerk/nuxt

npm i @clerk/nuxt@2.0.0-snapshot.v20260107162622 --save-exact

@clerk/react

npm i @clerk/react@6.0.0-snapshot.v20260107162622 --save-exact

@clerk/react-router

npm i @clerk/react-router@3.0.0-snapshot.v20260107162622 --save-exact

@clerk/shared

npm i @clerk/shared@4.0.0-snapshot.v20260107162622 --save-exact

@clerk/tanstack-react-start

npm i @clerk/tanstack-react-start@1.0.0-snapshot.v20260107162622 --save-exact

@clerk/testing

npm i @clerk/testing@2.0.0-snapshot.v20260107162622 --save-exact

@clerk/ui

npm i @clerk/ui@1.0.0-snapshot.v20260107162622 --save-exact

@clerk/upgrade

npm i @clerk/upgrade@2.0.0-snapshot.v20260107162622 --save-exact

@clerk/vue

npm i @clerk/vue@2.0.0-snapshot.v20260107162622 --save-exact