Three different background loops (_reconnectTask reachability poll,
_checkServeReachability, _pollBackgroundStatus) each independently
flipped Ollama sidecar tasks between running and stopped because the
`docker exec ollama-rocm ollama show <tag>` cmd exits cleanly after
its verification print, which the loops misread as the serve dying.
Added _isOllamaSidecarTask(task) and an early-bail in each of the
three loops so the task stays pinned to running once the show-cmd
exits 0. Also the tmux-graceful-kill path prepends a
`docker exec ollama-rocm ollama stop <tag>` before tearing down
the tmux session, so the Ollama-side model load gets unloaded too
(was leaving the model resident in the daemon after Stop).
63d9b12b22