Seasonal Goals

### Added
- **"Needs more crests" corner pip.** A have-item cell (**!**/**•**) now shows a
  small ▲ pip when the best item you hold can only reach the cell's target
  difficulty after same-track upgrades — e.g. a Hero 2/6 piece toward a Mythic
  goal would catalyze to Heroic right now, not Mythic. The previous "can
  catalyze now" labelling was misleading in this case. Hover the cell for the
  exact item and the number of ranks (crests) it's short. The pip is a shape,
  not a new color, so it carries through every palette including monochrome.