Review found that marking a not-running service inactive for good also retired services that only returned early for a transient reason: packet capture and the map uploader give up after waiting 30 s for the radio, and the bridges return when meshcore is momentarily unset, which is exactly when the health loop restarts them. Such a service now records a restart failure, so the next attempt waits out service_restart_backoff_seconds; a transient failure recovers, a missing configuration costs one attempt per backoff instead of one every 5 s. The restart decision is _service_restart_due, which the tests now exercise directly.
Also from the review: packet capture and the map uploader never cleared the should_exit flag stop() sets, so after a restart their background loops exited at once while the service reported healthy; start() now clears it. The Discord and Telegram bridges close the HTTP session they open when they return early because meshcore is not available.