Dark mode fixes across the board — hardcoded white backgrounds replaced with theme-aware card backgrounds

Backed crowdfunding projects feature shipped with settings reorganisation

Crowdfunding: new status set, inline status overrides, pipeline status indicators, per-project image upload

Writings: hero image drag-and-drop upload, collapsible tags, delete button, Published/Drafts tabs, sort by date, publish date override

Adventures feature launched: data model, API, and admin UI with theme selector