improvement(markdown): bump bold weight to 650 in dark mode

[waleedlatif1]

Summary

• reopens improvement(markdown): bump bold weight to 650 in dark mode #5721 (branch was deleted which auto-closed it; GitHub refuses to reopen after a force-replace) — same change, rebased on latest staging
• bold text in the markdown renderers (Files .md preview + chat messages) was hard to distinguish from body text in dark mode — light-on-dark text renders perceptually heavier, compressing the 430→600 weight contrast
• bumped strong to 650 in dark mode only, mirroring how the --font-weight-* tokens already bump semibold 500→550 in dark mode; light mode stays at 600

Type of Change

• Improvement

Testing

Tested manually against the running app

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)

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1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
docs	Skipped		Jul 17, 2026 3:55pm

[cursor]

PR Summary

Low Risk
CSS-only typography tweaks in markdown renderers with no logic, data, or auth changes.

Overview
Bold markdown is easier to read in dark mode by raising strong weight from 600 → 650 only under .dark, while light mode stays at 600.

The same tweak is applied in the Files rich markdown preview (rich-markdown-editor.css) and home chat markdown (chat-content.tsx), including bold inside custom table wrappers that sit outside default prose styles.

^{Reviewed by Cursor Bugbot for commit 15f0345. Configure here.}

[greptile-apps]

Greptile Summary

This PR increases the contrast of bold markdown text in dark mode. The main changes are:

• Sets rich markdown editor bold text to weight 650 in dark mode.
• Applies the same dark-mode weight to chat prose.
• Covers bold text inside chat markdown tables.

Confidence Score: 5/5

This looks safe to merge.

• No blocking issues found in the changed code.

Important Files Changed

Filename	Overview
apps/sim/app/workspace/[workspaceId]/files/components/file-viewer/rich-markdown-editor/rich-markdown-editor.css	Adds a component-scoped dark-mode override that raises strong text from weight 600 to 650.
apps/sim/app/workspace/[workspaceId]/home/components/message-content/components/chat-content/chat-content.tsx	Raises bold text to weight 650 in dark-mode chat prose and its separately styled markdown tables.

_{Reviews (1): Last reviewed commit: "improvement(markdown): bump bold weight ..." | Re-trigger Greptile}