0.9.3

fix(ci): soft-skip electron launch smoke when binary download flakes

The electron npm postinstall downloads the binary from GitHub and flakes
(rate-limiting / partial extract), unrelated to app correctness. When the
binary cannot be obtained after retries, set ELECTRON_SMOKE_SKIP and skip the
launch steps with a warning instead of failing the build. A real launch
failure (binary present, app broken) is still caught.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>