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- POST /api/v1/missions/import — multipart upload with video - GET /api/v1/missions/:id — retrieve mission - GET /api/v1/missions — list active missions - Express + multer for file handling - Uses application layer handlers (PR-002.5) - In-memory repositories (swap for PostgreSQL in PR-003B) Acceptance Tests (5/5 passing): ✅ Import mission with video ✅ Reject upload without video ✅ Retrieve mission by ID ✅ 404 for non-existent mission ✅ Health check MVP-0 Definition of Done: ✅ Phone → Upload → Store → Retrieve ✅ No AI required ✅ First real artifact produced Next: PR-005A — Minimal Mission Import UI