feat(teams): persist + refresh IdP subject token at login (spec 074, MCP-1036)#601

Dumbris wants to merge 3 commits into

mainsmart-mcp-proxy/mcpproxy-go:mainfrom

074-t3-idp-subject-tokensmart-mcp-proxy/mcpproxy-go:074-t3-idp-subject-tokenCopy head branch name to clipboard