stitchkit v0.108.1

Fixed

• stitchkit/process — under Bun, runNativeCommand no longer waits for its deadline on a command
  that has already exited. Bun's node:child_process can lose a child's exit event while the host
  is heavily loaded inside bun test (a bare spawn of sh -c 'echo x; exit 1' received no event at
  all in 4 of 30 parallel runs at load average ~90), so the call hung until timeoutMs and failed with
  Command deadline exceeded. Under Bun a command is now launched through Bun.spawn, presented to the
  command owner with the same events, streams, group ownership and failure reporting; Node still uses
  node:child_process. The deadline, stop policy and process-group cleanup are unchanged.