fix(cli): document Yarn Classic upgrades

[waleedlatif1]

Summary

• Add the missing Yarn Classic upgrade tab to CLI troubleshooting, matching the command already emitted by the updater.
• Label the tab explicitly because modern Yarn no longer supports global installs.
• Address the CLI documentation finding in v0.8.21: additional self hosting documentation, workspace fork improvements, tiptap and tailwind dep upgrades #7446.

Type of Change

• Bug fix

Testing

• Updater unit tests: 59 passed.
• Troubleshooting MDX compiled; docs type-check passed.
• Root lint and lint:check, block-registry audit, all 45 repository audits, and docs-manifest check passed.
• Verified against the Yarn Classic global command docs and modern Yarn migration guide.
• Two independent reviews found no additional issues. Documentation-only; no runtime changes.

Checklist

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

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Project	Deployment	Actions	Updated
docs	Building	Preview	Sep 3, 2026 8:55pm UTC

[greptile-apps]

Greptile Summary

Adds a Yarn Classic option to the CLI troubleshooting upgrade instructions, aligning the documentation with the command emitted by the updater.

• Extends the package-manager tabs with an explicitly labeled Yarn Classic option.
• Documents yarn global add sim@latest as the corresponding upgrade command.

Confidence Score: 5/5

The documentation-only change appears safe to merge.

The new tab follows established MDX tab conventions, and its Yarn Classic command matches both the updater output and the existing documented installation method.

Important Files Changed

Filename	Overview
apps/docs/content/docs/cli/troubleshooting.mdx	Adds a well-formed Yarn Classic upgrade tab whose command matches existing CLI updater behavior and documentation conventions.

_{Reviews (1): Last reviewed commit: "fix(cli): document Yarn Classic upgrades" | Re-trigger Greptile}