Every console.log, .warn, .etc.. line a Worker writes reaches the exporter with severity_number = 9 (INFO) and also prefixes the message/body with the console level. For example, console.error('something bad') becomes info:'ERROR something bad'.

`log_message` in crates/celld/otlp.rs hardcodes `field_varint(&mut out, 2, 9); // SEVERITY_NUMBER_INFO`.

What I'd expect is to follow standard OTEL severity mapping:

Method | severity_number | severity_text -- | -- | -- console.debug | 5 | DEBUG console.log, console.info | 9 | INFO console.warn | 13 | WARN console.error | 17 | ERROR