Description Build ForecastPanel and its children (ForecastHero, MetricGrid, HourlyStrip, SevenDayTable), styled per the current condition via CSS custom properties. Add prev/next buttons that page through the currently filtered/sorted city list. Rationale Functional requirement: users see one resource at a time, with an easy way to page forward and back, on top of the jump-to-specific-resource the map/list already give. The weather-themed styling is the visual design effort the rubric explicitly grades.