This 1947 film about a woman who moves into a house that is haunted by the ghost of a sea captain is a tender understated beauty. Somebody asked me recently if I had a “comfort film.” I’d never heard that phrase before. You might even think I would reject the concept, since my customary angle as a critic is to highlight challenging films that might even cause discomfort sometimes. But movies can play many roles in our lives, and I realized that comfort can be one of them. My answer, the first that came to mind, is The Ghost and…