When autostart is disabled, Windows deletes the Run registry entry, so
deriveStartMinimizedFromArgs(undefined) was returning false and silently
resetting the user's startMinimized preference the next time autostart
was re-enabled. Both the get- and set-auto-launch-settings handlers now
fall back to the disk-cached value when no OS entry exists, matching the
existing macOS/Linux fallback pattern.
Jannis Braun
e7c65ca308