Struct Observation 

struct Observation {
    callsign: String,
    reflector: String,
    module: Option<String>,
    protocol: &'static str,
}

A parsed activity observation extracted from one HTML table row.

All HTML parsing happens synchronously (no .await) to avoid holding non-Send scraper types across await points. The observations are collected into a Vec first, then written to the database in a second pass.

Fields

callsign: String

Operator callsign from column 1.

reflector: String

Reflector callsign extracted from the Dest Rptr field (column 6).

module: Option<String>

Module letter (A-Z) from the Dest Rptr field, if present.

protocol: &'static str

Protocol inferred from the reflector callsign prefix.