Openings API

// Get popular openings with pagination
const response = await fetch('/api/openings?page=1&limit=20&sort=popular');

// Search for Sicilian Defense variations
const response = await fetch('/api/openings?search=sicilian&sort=name');

// Filter by ECO code and show user favorites
const response = await fetch('/api/openings?eco=C60&favoritesOnly=true&userId=user123');

// Get all openings sorted by name
const response = await fetch('/api/openings?sort=name&limit=50');

{
  "openings": [
    {
      "id": "string",
      "fen": "string",
      "name": "Ruy Lopez",
      "eco": "C60",
      "moves": "1. e4 e5 2. Nf3 Nc6 3. Bb5",
      "src": "string",
      "scid": "string",
      "isEcoRoot": true,
      "aliases": [
        {
          "id": "string",
          "value": "Spanish Opening",
          "source": "string",
          "openingId": "string"
        }
      ],
      "totalVisits": 150,
      "totalFavorites": 25,
      "totalPracticeSessions": 75,
      "isFavorite": true,
      "userVisitCount": 5
    }
  ],
  "ecoOptions": ["A00", "A01", "B20", "C60", "D00"],
  "pagination": {
    "page": 1,
    "limit": 20,
    "total": 150,
    "totalPages": 8,
    "hasMore": true
  }
}