chore: import upstream snapshot with attribution

cli-tool/components/commands/setup/implement-graphql-api.md

@@ -0,0 +1,36 @@
+---
+allowed-tools: Read, Write, Edit, Bash
+argument-hint: [schema-approach] | --schema-first | --code-first | --federation
+description: Implement GraphQL API with comprehensive schema, resolvers, and real-time subscriptions
+---
+
+# Implement GraphQL API
+
+Implement comprehensive GraphQL API with modern best practices: **$ARGUMENTS**
+
+## Current Application Context
+
+- Framework: @package.json or @requirements.txt (detect Apollo, GraphQL Yoga, etc.)
+- Existing API: !`find . -name "*.graphql" -o -name "*schema*" -o -name "*resolver*" | wc -l`
+- Database integration: @prisma/schema.prisma or database connection configs
+- Authentication: !`grep -r "auth\|jwt\|context" src/ 2>/dev/null | wc -l`
+
+## Task
+
+Build production-ready GraphQL API with comprehensive functionality and performance optimization:
+
+**Schema Approach**: Use $ARGUMENTS to specify schema-first, code-first, or federation architecture
+
+**GraphQL Implementation**:
+1. **Schema Design** - Type definitions, queries, mutations, subscriptions, custom scalars
+2. **Resolver Architecture** - Data fetching, authentication, authorization, error handling
+3. **DataLoader Integration** - N+1 query prevention, batch loading, caching strategies
+4. **Real-time Features** - WebSocket subscriptions, live data updates, connection management
+5. **Security & Performance** - Query complexity analysis, depth limiting, rate limiting
+6. **Development Tools** - GraphQL Playground, introspection, schema stitching
+
+**Advanced Features**: File uploads, federated schemas, Apollo Federation, schema directives, and monitoring.
+
+**Production Readiness**: Implement comprehensive error handling, logging, metrics, and deployment strategies.
+
+**Output**: Complete GraphQL API with optimized resolvers, real-time capabilities, security controls, and developer documentation.