[WIP] Add examples for currently defined protocols

examples/data/metadata-examples/README.md

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+# ObjectStack Data Protocol Examples
+
+This package contains comprehensive examples demonstrating all aspects of the ObjectStack Data Protocol.
+
+## 📚 What's Included
+
+### Core Examples
+
+1. **field.examples.ts** - 36 field type examples
+   - All field types from FieldType enum
+   - Text, numbers, dates, boolean, select, relationships
+   - Media fields (image, file, avatar)
+   - Calculated fields (formula, summary, autonumber)
+   - Enhanced fields (location, address, code, color, rating, etc.)
+
+2. **object.examples.ts** - 10 complete object definitions
+   - Simple and complex objects
+   - Objects with capabilities, indexes, search configuration
+   - Real-world CRM, e-commerce, and project management examples
+
+3. **query.examples.ts** - 25 query examples
+   - Simple and complex queries
+   - Filtering, sorting, pagination
+   - Aggregations and joins
+   - Window functions
+   - Real-world business queries
+
+4. **filter.examples.ts** - 27 filter condition examples
+   - All filter operators (eq, ne, gt, lt, in, etc.)
+   - Logical operators (AND, OR, NOT)
+   - String matching (contains, startsWith, endsWith)
+   - Complex nested conditions
+   - Real-world filtering scenarios
+
+5. **validation.examples.ts** - 20 validation rule examples
+   - Script validation
+   - Uniqueness constraints
+   - State machine validation
+   - Format validation
+   - Cross-field validation
+   - Async validation
+   - Conditional validation
+   - Custom validation
+
+6. **hook.examples.ts** - 20 lifecycle hook examples
+   - Before/after insert, update, delete
+   - Read hooks (beforeFind, afterFind)
+   - Data enrichment and transformation
+   - External system integration
+   - Audit trail and notifications
+
+7. **mapping.examples.ts** - 10 ETL mapping examples
+   - CSV and JSON imports
+   - Data transformations (constant, lookup, map, split, join)
+   - Export configurations
+   - Complex multi-lookup scenarios
+   - Migration use cases
+
+8. **dataset.examples.ts** - 10 seed data examples
+   - Reference data (countries, currencies)
+   - System configuration
+   - Demo and test data
+   - Environment-specific datasets
+
+## 🚀 Usage
+
+```typescript
+import {
+  SimpleTextField,
+  SimpleObject,
+  SimpleSelectQuery,
+  EqualityFilter,
+  RequiredFieldValidation,
+  SendNotificationHook,
+  SimpleCsvImportMapping,
+  CountryDataset,
+} from '@objectstack/example-data';
+```
+
+## 🏗️ Building
+
+```bash
+npm run build
+```
+
+This compiles all TypeScript examples to JavaScript and generates type declarations.
+
+## 📖 Example Structure
+
+Each example follows this pattern:
+- Descriptive constant name (e.g., `SimpleSalesCrmApp`)
+- Comprehensive JSDoc comment explaining the use case
+- Complete, valid example using proper schemas
+- Realistic, practical scenarios (CRM, e-commerce, project management)
+
+## 🎯 Use Cases
+
+These examples are designed for:
+- **Learning**: Understand ObjectStack Data Protocol patterns
+- **Reference**: Copy-paste starting points for your own metadata
+- **Testing**: Validate implementations against standard patterns
+- **Documentation**: Illustrate best practices and conventions
+
+## 📝 Naming Conventions
+
+- **Configuration Keys**: camelCase (e.g., `maxLength`, `referenceFilters`)
+- **Machine Names**: snake_case (e.g., `first_name`, `project_task`)
+- **Example Constants**: PascalCase (e.g., `EmailField`, `ContactObject`)
+
+## 🔗 Related
+
+- [ObjectStack Spec](../../../packages/spec) - Core schema definitions
+- [UI Examples](../../ui/metadata-examples) - UI Protocol examples

examples/data/metadata-examples/package.json

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+{
+  "name": "@objectstack/example-data",
+  "version": "1.0.0",
+  "description": "Comprehensive Data Protocol examples demonstrating Objects, Fields, Queries, Filters, and Validations",
+  "private": true,
+  "scripts": {
+    "build": "tsc",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "dependencies": {
+    "@objectstack/spec": "workspace:*"
+  },
+  "devDependencies": {
+    "typescript": "^5.0.0"
+  }
+}