Update cursor rules glob patterns

[alexandratran]

Description

Cursor appears not to be applying all rules properly, possibly because of bad glob patterns. This PR updates to proper syntax (seems to be confusing for many: https://forum.cursor.com/t/correct-way-to-specify-rules-globs/71752).

Before:

After:

Checklist

• If this PR updates or adds documentation content that changes or adds technical meaning, it has received an approval from an engineer or DevRel from the relevant team.
• If this PR updates or adds documentation content, it has received an approval from a technical writer.

External contributor checklist

• I've read the contribution guidelines.
• I've created a new issue (or assigned myself to an existing issue) describing what this PR addresses.

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Note

Low Risk
Low risk since changes are limited to Cursor rule metadata and should only affect which files the editor applies rules to. Main risk is unintended widening/narrowing of rule scope due to the new glob strings.

Overview
Updates Cursor rule frontmatter globs fields to use Cursor’s supported comma-separated syntax (for **/*.md/**/*.mdx and product-specific paths), improving rule matching across the docs.

Also refines the editorial-voice guidance by clarifying the em-dash rule and tightening when bold is allowed, and removes the scripts/generate-smart-accounts-glossary.js glob from the Smart Accounts Kit rule scope.

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Project	Deployment	Actions	Updated (UTC)
metamask-docs	Ready	Preview, Comment	Apr 22, 2026 11:24pm

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

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^{Reviewed by Cursor Bugbot for commit 2233aed. Configure here.}

[bgravenorst]

lgtm