POST /api/v1/uploads/:fileId/complete

Request:

POST https://api.dropkit.app/v1/uploads/abc123.../complete
Authorization: Bearer pk_live_...

Response:

{
  "file": {
    "id": "abc123...",
    "projectId": "...",
    "name": "photo.jpg",
    "mime": "image/jpeg",
    "size": 12345,
    "createdAt": 1700000000000
  },
  "publicUrl": "https://cdn.dropkit.app/abc123..."
}