Problem. nexum:host/logging carries log(level, message) only. A guest that structures its logging in the tracing style must fold the target and the fields into the message string, and the host cannot filter or route on them.
Scope. An additive change to the unfrozen logging package: add a target (or scope) string and a list of key-value fields to the log verb, so a guest maps tracing events through without loss and the host pipeline filters like a tracing subscriber.
Dependencies. None. Refs: nullislabs/videre-nexum-module#26, whose "level and target intact" acceptance box closes against this.
AI Assistance: Claude Fable filed this from the videre #26 groom and the tracing-shaped direction mfw78 chose (2026-08-06).
Problem.
nexum:host/loggingcarrieslog(level, message)only. A guest that structures its logging in the tracing style must fold the target and the fields into the message string, and the host cannot filter or route on them.Scope. An additive change to the unfrozen logging package: add a target (or scope) string and a list of key-value fields to the log verb, so a guest maps tracing events through without loss and the host pipeline filters like a tracing subscriber.
Dependencies. None. Refs: nullislabs/videre-nexum-module#26, whose "level and target intact" acceptance box closes against this.
AI Assistance: Claude Fable filed this from the videre #26 groom and the tracing-shaped direction mfw78 chose (2026-08-06).