[Enhancement] Rename extension from 'Nostr Client' to 'Nostr Proxy'

[BenGWeeks]

Problem

The current name 'Nostr Client' is misleading. Users typically think of a Nostr client as an application for viewing and interacting with Nostr notes (like Damus, Amethyst, etc.). However, this extension doesn't display notes - it's a relay multiplexer/proxy.

Suggested Change

Display Name: Nostr Proxy
Tagline: Always-on relay multiplexer for Nostr clients

Updated description.md

An always-on relay multiplexer that aggregates multiple Nostr relay connections. Connect your Nostr client to a single WebSocket endpoint, and nostrclient automatically fans out your requests to multiple relays and aggregates the responses.

Rationale

The extension's architecture is:

Nostr Client Apps → nostrclient (proxy) → Multiple Nostr Relays

From the user's perspective, this is infrastructure/middleware, not a client application. The name should reflect its actual function as a proxy/multiplexer.

Files to Update

• description.md - Update the description text
• Any UI strings that reference 'Nostr Client' in the display name