windows_pty.dart's Win32 structs, kernel32 bindings, and the WindowsPty
session (CreatePseudoConsole / CreateProcessW / WaitForSingleObject) cannot
execute on the ubuntu-latest runner that produces the coverage report —
there is no kernel32 to bind. They were being counted as 214 uncovered
lines (the file sat at 13.7%), dragging total line coverage to 94.17% and
failing the 95% gate for code the gate's platform structurally cannot reach.
Wrap exactly that FFI span in `// coverage:ignore-start/end` (flutter test
--coverage honours the markers, verified). The pure, platform-agnostic spawn
helpers — resolveExecutable / quoteArg / composeEnvironmentBlock — sit after
the ignore-end and stay measured (covered by windows_pty_args_test.dart on
every platform). FFI-path behaviour is validated on the Windows runner
(windows.yml) and end-to-end in the Windows VM soak (tools/windows-verify/).
Gate back to green: 95.16% (floor 95%). Floor unchanged — the exclusion
restores the denominator to Linux-runnable code rather than lowering the bar.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
jpmschweitzerandClaude Opus 4.8
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