Remove redundant FieldTypeToGraphQLMapping schema, keep helper function

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Copilot

content/docs/references/api/graphql.mdx

@@ -12,21 +12,15 @@ description: Graphql protocol schemas
 ## TypeScript Usage
 
 ```typescript
-import { FieldTypeToGraphQLMappingSchema, GraphQLConfigSchema, GraphQLDataLoaderConfigSchema, GraphQLDirectiveConfigSchema, GraphQLDirectiveLocationSchema, GraphQLMutationConfigSchema, GraphQLPersistedQuerySchema, GraphQLQueryComplexitySchema, GraphQLQueryConfigSchema, GraphQLQueryDepthLimitSchema, GraphQLRateLimitSchema, GraphQLResolverConfigSchema, GraphQLScalarTypeSchema, GraphQLSubscriptionConfigSchema, GraphQLTypeConfigSchema } from '@objectstack/spec/api';
-import type { FieldTypeToGraphQLMapping, GraphQLConfig, GraphQLDataLoaderConfig, GraphQLDirectiveConfig, GraphQLDirectiveLocation, GraphQLMutationConfig, GraphQLPersistedQuery, GraphQLQueryComplexity, GraphQLQueryConfig, GraphQLQueryDepthLimit, GraphQLRateLimit, GraphQLResolverConfig, GraphQLScalarType, GraphQLSubscriptionConfig, GraphQLTypeConfig } from '@objectstack/spec/api';
+import { GraphQLConfigSchema, GraphQLDataLoaderConfigSchema, GraphQLDirectiveConfigSchema, GraphQLDirectiveLocationSchema, GraphQLMutationConfigSchema, GraphQLPersistedQuerySchema, GraphQLQueryComplexitySchema, GraphQLQueryConfigSchema, GraphQLQueryDepthLimitSchema, GraphQLRateLimitSchema, GraphQLResolverConfigSchema, GraphQLScalarTypeSchema, GraphQLSubscriptionConfigSchema, GraphQLTypeConfigSchema } from '@objectstack/spec/api';
+import type { GraphQLConfig, GraphQLDataLoaderConfig, GraphQLDirectiveConfig, GraphQLDirectiveLocation, GraphQLMutationConfig, GraphQLPersistedQuery, GraphQLQueryComplexity, GraphQLQueryConfig, GraphQLQueryDepthLimit, GraphQLRateLimit, GraphQLResolverConfig, GraphQLScalarType, GraphQLSubscriptionConfig, GraphQLTypeConfig } from '@objectstack/spec/api';
 
 // Validate data
-const result = FieldTypeToGraphQLMappingSchema.parse(data);
+const result = GraphQLConfigSchema.parse(data);
 ```
 
 ---
 
-## FieldTypeToGraphQLMapping
-
-Field type to GraphQL type mapping configuration
-
----
-
 ## GraphQLConfig
 
 ### Properties

packages/spec/json-schema/api/FieldTypeToGraphQLMapping.json

@@ -109,82 +109,6 @@ export const GraphQLScalarType = z.enum([
 
 export type GraphQLScalarType = z.infer<typeof GraphQLScalarType>;
 
-/**
- * ObjectQL to GraphQL Type Mapping
- * 
- * Maps ObjectQL field types to GraphQL scalar types.
- * This enables automatic schema generation from Object definitions.
- */
-export const FieldTypeToGraphQLMapping = z.object({
-  // Core Text -> String
-  text: z.literal('String').default('String'),
-  textarea: z.literal('String').default('String'),
-  email: z.literal('Email').default('Email'),
-  url: z.literal('URL').default('URL'),
-  phone: z.literal('PhoneNumber').default('PhoneNumber'),
-  password: z.literal('String').default('String'),
-  
-  // Rich Content -> String
-  markdown: z.literal('String').default('String'),
-  html: z.literal('String').default('String'),
-  richtext: z.literal('String').default('String'),
-  
-  // Numbers
-  number: z.literal('Float').default('Float'),
-  currency: z.literal('Currency').default('Currency'),
-  percent: z.literal('Float').default('Float'),
-  
-  // Date & Time
-  date: z.literal('Date').default('Date'),
-  datetime: z.literal('DateTime').default('DateTime'),
-  time: z.literal('Time').default('Time'),
-  
-  // Logic
-  boolean: z.literal('Boolean').default('Boolean'),
-  toggle: z.literal('Boolean').default('Boolean'),
-  
-  // Selection -> String (enum values)
-  select: z.literal('String').default('String'),
-  multiselect: z.array(z.literal('String')).default(['String']),
-  radio: z.literal('String').default('String'),
-  checkboxes: z.array(z.literal('String')).default(['String']),
-  
-  // Relational -> ID
-  lookup: z.literal('ID').default('ID'),
-  master_detail: z.literal('ID').default('ID'),
-  tree: z.literal('ID').default('ID'),
-  
-  // Media -> String (URLs) or Upload
-  image: z.literal('URL').default('URL'),
-  file: z.literal('URL').default('URL'),
-  avatar: z.literal('URL').default('URL'),
-  video: z.literal('URL').default('URL'),
-  audio: z.literal('URL').default('URL'),
-  
-  // Calculated
-  formula: z.literal('String').default('String'),
-  summary: z.literal('Float').default('Float'),
-  autonumber: z.literal('String').default('String'),
-  
-  // Enhanced Types
-  location: z.literal('JSONObject').default('JSONObject'),
-  address: z.literal('JSONObject').default('JSONObject'),
-  code: z.literal('String').default('String'),
-  json: z.literal('JSON').default('JSON'),
-  color: z.literal('String').default('String'),
-  rating: z.literal('Float').default('Float'),
-  slider: z.literal('Float').default('Float'),
-  signature: z.literal('String').default('String'),
-  qrcode: z.literal('String').default('String'),
-  progress: z.literal('Float').default('Float'),
-  tags: z.array(z.literal('String')).default(['String']),
-  
-  // AI/ML Types
-  vector: z.array(z.literal('Float')).default(['Float']),
-}).optional().describe('Field type to GraphQL type mapping configuration');
-
-export type FieldTypeToGraphQLMapping = z.infer<typeof FieldTypeToGraphQLMapping>;
-
 /**
  * GraphQL Type Configuration
  *