docs: use latest release badge instead of removed workflow badge

Author: ragingstar2063

README.md

@@ -3,7 +3,7 @@
 [![npm version](https://img.shields.io/npm/v/opencode-claude-code-auth.svg)](https://www.npmjs.com/package/opencode-claude-code-auth)
 [![npm downloads](https://img.shields.io/npm/dw/opencode-claude-code-auth.svg)](https://www.npmjs.com/package/opencode-claude-code-auth)
 [![publish npm](https://github.com/ragingstar2063/opencode-claude-code-auth/actions/workflows/publish.yml/badge.svg)](https://github.com/ragingstar2063/opencode-claude-code-auth/actions/workflows/publish.yml)
-[![release](https://github.com/ragingstar2063/opencode-claude-code-auth/actions/workflows/release.yml/badge.svg)](https://github.com/ragingstar2063/opencode-claude-code-auth/actions/workflows/release.yml)
+[![release](https://img.shields.io/github/v/release/ragingstar2063/opencode-claude-code-auth?display_name=tag)](https://github.com/ragingstar2063/opencode-claude-code-auth/releases/latest)
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](LICENSE)
 
 Bring back Anthropic auth to OpenCode. Pick your path — Claude Code session, browser OAuth, or plain API key.