fix(oauth): serialize token refresh per server and classify refresh errors (Spec 113-a) - #1498

fix(oauth): serialize token refresh per server and classify refresh errors (Spec 113-a)#1498

Dumbris merged 10 commits into

mainsmart-mcp-proxy/mcpproxy-go:mainfrom

113-a-oauth-refresh-robustnesssmart-mcp-proxy/mcpproxy-go:113-a-oauth-refresh-robustnessCopy head branch name to clipboard