bedrockProxyLinkMissing

True when this backend is proxied, unkeyed (so the proxy is missing RSPM or is unsupported), and there is evidence Bedrock is in play — either a Bedrock stack installed here, or a Bedrock player already observed arriving through the proxy (the proxy-only-Floodgate case). This is the exact condition under which Bedrock features break with no other symptom.