mcp-oauth-token-token-endpoint-returns-400-500-when-using-proxyoau-289e138b

THEN Modify the token request to include the redirect_uri parameter that was used in the authorization request, as required by RFC 6749 section 4.1.3. Ensure the exchangeAuthorizationCode function passes the redirect_uri to the token endpoint.

// In the token request body, add:
body: { grant_type: 'authorization_code', code, redirect_uri }