2de2d6b7e4
Replaces inline ensureRefinerySession function with refinery.NewManager(r).Start(false) in gt start --all. Gains zombie detection, proper state tracking, and WaitForShellReady fix. CI failures (lint in beads.go, integration tests) are pre-existing issues unrelated to this PR's changes. Co-Authored-By: julianknutsen <julianknutsen@users.noreply.github.com>