GraphQL Schema and Resolver Template

Create a GraphQL API schema for:

Domain: {{DOMAIN}} (e.g., blog, e-commerce, social)
Server Framework: {{FRAMEWORK}} (Apollo Server/GraphQL Yoga/Mercurius)
Database: {{DATABASE}}

Generate complete GraphQL structure:

1. **Type Definitions (schema.graphql):**
   - Object types with field descriptions
   - Input types for mutations
   - Enum types
   - Interface types
   - Union types
   - Custom scalars (DateTime, JSON, etc.)

2. **Query Definitions:**
   - Single item queries
   - List queries with pagination
   - Search/filter queries
   - Nested field queries

3. **Mutation Definitions:**
   - Create mutations
   - Update mutations
   - Delete mutations
   - Batch operations
   - File upload mutations

4. **Subscription Definitions:**
   - Real-time updates
   - Filtered subscriptions

5. **Resolvers:**
   - Query resolvers
   - Mutation resolvers
   - Field resolvers
   - Subscription resolvers
   - DataLoader integration

6. **Context Setup:**
   - Authentication context
   - Database connection
   - DataLoader instances

7. **Directives:**
   - @auth directive
   - @deprecated directive
   - Custom validation directives

8. **Error Handling:**
   - Custom error classes
   - Error formatting
   - Validation errors

Include N+1 query prevention with DataLoader patterns.