Compose Post Screen — Dark Social App UI

Complete iOS-style mobile screen for composing a new social media post in a community app. Dark mode layout with a 'New post' header (close and Share actions), photo thumbnail with caption input, and a scrollable settings list: tag people, add location, audience, post to community, schedule post, add hashtags, share with collaborators, enable comments, track engagement, privacy settings, and save as draft. Part of the Hearth social media & community app UI kit (393x852px, dark theme with iOS green accents).