4d1880e0bf
Simplification workers collapsed subprocess call sites into shared kwargs helpers and dropped the Windows/TUI safety kwargs on the way: - encoding='utf-8', errors='replace' restored on text=True runs in copilot_acp_client, hermes_cli/setup (vercel install), managed_uv (codesign steps), local_runtime/hardware._stdout, a2a adapter. - stdin=subprocess.DEVNULL restored on copilot probe, verify/runner _SUBPROCESS_KW, iron_proxy._run, google_meet playwright/system_profiler, simplex convert, whatsapp _RUN_TEXT, mem0 ollama serve Popen. google_meet sudo/brew install keeps inherited stdin (user-confirmed, may prompt) — marked noqa: subprocess-stdin. - Windows-safe SIGKILL: getattr(signal, 'SIGKILL', SIGTERM) in verify/runner; photon _kill call re-marked windows-footgun: ok (unreachable on win32). - scripts/check_subprocess_stdin.py now recognizes **kwargs splats (**_KW / **_kw(...)) ONLY when the same-file definition provably sets stdin= — covers tui_gateway _capture_run_kwargs/run_kw. Parity test added.