fix: make file uri links clickable

[Yash-Singh1]

What Changed

Sometimes codex likes to output links as a file uri instead of just making the link the path as we'd expect. This pr strips the file:// so these links are clickable again.

UI Changes

N/A

Checklist

• This PR is small and focused
• I explained what changed and why
• I included before/after screenshots for any UI changes
• I included a video for animation/interaction changes

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Note

Low Risk
Low risk: small, well-scoped change to markdown link transformation with added unit/browser tests; main risk is unexpected URL rewriting edge cases for non-file links.

Overview
Fixes file:// links in chat markdown so they’re clickable. ChatMarkdown now uses a custom urlTransform to rewrite file: URIs into plain filesystem-path hrefs (preserving #L… anchors) while falling back to react-markdown’s defaultUrlTransform for everything else.

Adds rewriteMarkdownFileUriHref (and extends parseFileUrlHref to optionally avoid decoding) to prevent double-decoding issues, plus new unit tests and a browser-level ChatMarkdown test verifying rewritten hrefs and editor-open behavior.

^{Reviewed by Cursor Bugbot for commit 7f7b0b9. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Fix file URI links to be clickable in ChatMarkdown

• Adds rewriteMarkdownFileUriHref in markdown-links.ts to convert file:// URIs to direct filesystem paths, preserving hash anchors and keeping path octets encoded for single-pass decoding downstream.
• Wires this into ChatMarkdown.tsx via a urlTransform prop on ReactMarkdown, falling back to defaultUrlTransform for non-file URLs.
• Clicking a rewritten link continues to call openInPreferredEditor with the resolved path and optional line number.

^{Macroscope summarized 7f7b0b9.}

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[macroscopeapp]

Approvability

Verdict: Approved

This is a straightforward bug fix that makes file:// URI links clickable in markdown by transforming them to direct paths. The changes are self-contained to URL handling in markdown rendering, well-tested with both unit and browser tests, and have no security or infrastructure implications.

No code changes detected at 7f7b0b9. Prior analysis still applies.

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