Points the cinny submodule at cinny feat/keychain-session for a Windows smoke build, and adds a smoke check: a full session in localStorage must move to Credential Manager on boot and stay signed in across a restart. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_017PCb59uY3UKqDqt7B6hzd5