### BEFORE (main @ f3b058cd6a, pinnedRuntime.ts; unchanged on main 28286d523f)
platform=linux node=v24.22.1
step 1: service on 0.1.0
  versions/:  0.1.0
  launchers:  (empty)
  prune(keep=0.1.0, service PATH has versions/0.1.0) removed: []
after startup prune on 0.1.0
  versions/:  0.1.0
  launchers:  $HOME/bin/t3 | $HOME/runtime/versions/0.1.0/t3
  prune(keep=0.1.2, service PATH has versions/0.1.2) removed: []
after startup prune on 0.1.2 (expected: 0.1.0 removed)
  versions/:  0.1.0, 0.1.2
  launchers:  $HOME/bin/t3 | $HOME/runtime/versions/0.1.0/t3 | $HOME/runtime/versions/0.1.2/t3
### AFTER (fix/issue-25399 @ 99da2d3315)
platform=linux node=v24.22.1
step 1: service on 0.1.0
  versions/:  0.1.0
  launchers:  (empty)
  prune(keep=0.1.0, service PATH has versions/0.1.0) removed: []
after startup prune on 0.1.0
  versions/:  0.1.0
  launchers:  $HOME/bin/t3
  prune(keep=0.1.2, service PATH has versions/0.1.2) removed: [0.1.0]
after startup prune on 0.1.2 (expected: 0.1.0 removed)
  versions/:  0.1.2
  launchers:  $HOME/bin/t3