Taskvisor 0.8: task ownership from submission to cleanup

Hi all, In June, I introduced Taskvisor 0.2 as a Tokio task supervisor with restart policies, backoff, lifecycle events, and dynamic task control. After that release, I kept moving the project forward one practical problem at a time. I wanted final outcomes to be reliable, controller admission to be predictable, shutdown to be bounded, and runtime limits to describe the real load. Each change made sense on its own, and this worked for a while. By 0.7, however, I felt stuck. Fixing one edge of...