The Windows branch of `_create_bash_subprocess` spawned Git Bash with
neither pipes nor the env it was handed. `proc.stdout` and `proc.stderr`
came back `None`, so `_run_subprocess_streaming`'s reader returned
immediately and the Bash tool reported `"(no output)"` alongside the real
exit code — while the child inherited the server's own stdout/stderr and
wrote agent command output into the console and the launchd/Docker logs.
The `env` parameter was accepted and never used, so `PATH`, `VIRTUAL_ENV`,
`HOME`, `TMPDIR` and the configured import paths carried in
`ctx["subproc_env"]` never reached the child on Windows, even though every
POSIX path applies them.
Spawn it the way the POSIX path at `:688` already does: `stdin=DEVNULL`,
`stdout=PIPE`, `stderr=PIPE`, `env=env`.
`website/configuration-reference.md` is generated from source line numbers,
so the four added lines shift one entry; regenerated with
`scripts/generate_env_reference.py`.
Léo