User-Agent Freeze Test

The `ua-is-frozen` package provides a lightweight, focused utility function, `isFrozenUA`, designed to detect if a given user-agent (UA) string conforms to the "frozen" or "reduced" patterns enforced by modern browsers, particularly in response to initiatives like Chromium's User-Agent Reduction. It helps developers identify whether a UA string has been intentionally simplified or obscured by the browser to limit fingerprinting. Currently at version 0.1.2, this library is a specific-purpose tool, not a comprehensive UA parser. Its release cadence is expected to be infrequent, primarily aligning with significant changes in browser UA policies rather than regular feature cycles. Key differentiators include its single responsibility, direct boolean output, and lightweight footprint, offering a simple programmatic check for a complex and evolving web standard without the overhead of full UA string analysis. It ships with TypeScript types, facilitating its use in modern JavaScript projects.