Side ops now credit their creator: mission cards get a 'Hosted by X' meta entry and the mission detail page gets a Host chip. Display name preferred over username; only shown for side ops with a populated createdBy.
- Add campaigns list page with campaign cards
- Add missions list page with filtering and mission cards
- Add factions list page with faction cards
- Add mission detail components: briefing, comms, factions, logistics, objectives, roles
- Add MissionFilters for status and type filtering
