teknium1 noticed execute_code was missing from his enabled tools on Windows.
Root cause: tools/code_execution_tool.py set ``SANDBOX_AVAILABLE =
sys.platform != \"win32\"`` as a module-level constant, originally because
the RPC transport required AF_UNIX. We added loopback TCP fallback for
the sandbox in commit eeb723fff (and covered it in the Windows TCP tests),
but forgot to lift the availability gate. So execute_code was still
invisible via the check_fn path on Windows.
- SANDBOX_AVAILABLE is now True unconditionally (it's still checked — a
future platform could flip it off via monkeypatch/env if needed).
- Error message when disabled no longer mentions Windows specifically,
just says 'sandbox is unavailable in this environment'.
- test_windows_returns_error updated: patches SANDBOX_AVAILABLE=False
directly (which was always its real intent) and asserts on 'unavailable'
instead of 'Windows'.
Tests: 171 code-execution + windows-compat tests pass, no regressions.
Teknium
21efeb51bb