Add battle-tested production statement to documentation

[Copilot]

Adds messaging that the library is battle-tested in production environments.

Changes

• README.md: Added feature bullet "Battle-tested in production apps and dashboards"
• docs/content/docs/index.mdx: Added callout highlighting production reliability after zero-dependencies section

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• fonts.googleapis.com

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

Add to docs that this library is battle tested in production apps and dashboards

---

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (79e7fce) to head (f8f9a2c).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #62   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            6         6           
  Lines          245       245           
  Branches        82        82           
=========================================
  Hits           245       245           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[Copilot]

Pull Request Overview

This PR adds marketing/informational content highlighting that the library is battle-tested in production environments. The changes are purely documentation updates with no code modifications.

Key Changes:

• Added production usage callout to documentation site
• Updated README features list to include production testing claim

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
docs/content/docs/index.mdx	Added an info callout box highlighting production usage
README.md	Added bullet point about production testing to features list

[codspeed-hq]

CodSpeed Performance Report

Merging #62 will not alter performance

_{Comparing copilot/add-battle-tested-notes (f8f9a2c) with main (79e7fce)}

Summary

✅ 64 untouched