fix(security): 添加VITE_PAYMENT_URL环境变量配置

.qoder/skills/understand/languages/graphql.md

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+# GraphQL Language Prompt Snippet
+
+## Key Concepts
+
+- **Type System**: Strongly typed schema defining the API contract with scalar, object, enum, and union types
+- **Queries**: Read operations fetching data with field-level selection (no over-fetching)
+- **Mutations**: Write operations for creating, updating, and deleting data
+- **Subscriptions**: Real-time data push over WebSocket connections
+- **Resolvers**: Functions mapping schema fields to data sources (database, API, cache)
+- **Fragments**: Reusable field selections reducing query duplication across operations
+- **Directives**: `@deprecated`, `@include`, `@skip` for conditional field inclusion and schema metadata
+- **Input Types**: `input` keyword for complex mutation arguments
+- **Interfaces and Unions**: Polymorphic types for shared fields across multiple object types
+- **Schema Stitching / Federation**: Composing multiple GraphQL services into a unified graph
+
+## Notable File Patterns
+
+- `schema.graphql` / `*.graphql` — Schema definition files
+- `*.gql` — Alternative extension for GraphQL files
+- `schema/*.graphql` — Split schema files by domain (users.graphql, orders.graphql)
+- `*.resolvers.ts` / `*.resolvers.js` — Resolver implementations (TypeScript/JavaScript convention)
+- `codegen.yml` — GraphQL Code Generator configuration
+
+## Edge Patterns
+
+- GraphQL schema files `defines_schema` for the resolver code that implements query/mutation handlers
+- Type definitions create `related` edges between types connected by field references
+- Schema files `defines_schema` for client-side query/mutation files that consume the API
+- Codegen config `configures` the schema-to-code generation pipeline
+
+## Summary Style
+
+> "GraphQL schema defining N types, M queries, and K mutations for the user management API."
+> "API schema with type definitions for products, orders, and payment processing with pagination."
+> "Subscription schema enabling real-time notifications for order status updates."