improvement(markdown): upgrade marked to v18

[waleedlatif1]

Summary

• upgrade Marked to v18 across direct and transitive consumers
• improve Markdown parser performance on pathological inputs

Type of Change

• Improvement

Testing

• 138 focused Markdown, email, and renderer tests pass
• monorepo type-check, lint, frozen lockfile validation, and repository audits pass

Checklist

• Code follows project style guidelines
• Self-reviewed my changes
• Existing tests pass
• No new warnings introduced
• CLA requirements are satisfied

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Project	Deployment	Actions	Updated
docs	Ready	Preview	Sep 5, 2026 1:58am UTC

[greptile-apps]

Greptile Summary

This PR upgrades the Sim application’s direct Marked dependency to 18.0.11 and adds a root override that consolidates direct and transitive Marked consumers onto that version.

• Updates apps/sim from Marked 15.0.12 to 18.0.11.
• Adds a root-level Marked override.
• Regenerates the Bun lockfile to use the consolidated resolution.

Confidence Score: 5/5

The PR appears safe to merge with no actionable new issue established in the current changes.

The dependency and lockfile changes consistently resolve Marked to 18.0.11, and no concrete compatibility, security, or repository-rule failure was established. The previous transitive-version finding was addressed by the override and its thread was resolved after the author reported passing focused tests, type-checking, and frozen-lockfile validation.

Important Files Changed

Filename	Overview
package.json	Adds a root override pinning all Marked consumers to version 18.0.11.
apps/sim/package.json	Upgrades the Sim application’s direct Marked dependency from 15.0.12 to 18.0.11.
bun.lock	Regenerates dependency resolution so previously nested Marked versions resolve to 18.0.11.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
  Root[Root marked override: 18.0.11] --> Sim[apps/sim direct dependency]
  Root --> Email[React Email consumers]
  Root --> Editor[TipTap and Monaco consumers]
  Root --> Renderers[Mermaid and Streamdown consumers]
  Sim --> Lock[Single bun.lock resolution]
  Email --> Lock
  Editor --> Lock
  Renderers --> Lock

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[waleedlatif1]

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