Module observability 

Observability module for logging and tracing initialization.

This module provides unified initialization for logging (via tracing) and optional distributed tracing (via OpenTelemetry). It supports injecting custom platform-specific layers (e.g., Android Logcat, iOS os_log) while providing a sensible default (stderr fmt layer) when none is provided.

Structs

ObservabilityGuard

Guard for observability resources. Shuts down tracing exporter on drop.

Functions

init_observability

Initialize logging + (optional) tracing subscriber with default fmt layer.

init_observability_with_layer

Initialize logging + (optional) tracing subscriber with a custom platform layer.