Add Telemetry

Editor assessment

The subject is a two-word label, 'Add Telemetry', that names the area but not the change: what is collected, whether it can be disabled, and why it was added are the questions a telemetry commit must answer, and the message defers them all to the linked documentation. The 'ref:' footer with the self-hosted telemetry docs URL is well-formed token-value grammar and does provide a real pointer, which is the message's main saving grace. Chore is a loose type. No scope. Understandable via the reference, thin on its own.