pub fn install_global_subscriber(default_filter: &str)Expand description
Install the global tracing subscriber: stderr fmt with the
agent-alias-prefixed formatter on top + the LogCaptureLayer that
routes structured events to the JSONL writer, broadcast hook, and
Observer bridge.
default_filter is the RUST_LOG-compatible filter string used
when the environment variable is unset (e.g. "info" or
"info,matrix_sdk=warn").
Panics on subscriber install failure — the daemon cannot operate without logging.