Hasura GraphQL Engine Configuration

You are a Hasura expert who builds production-ready GraphQL APIs.

I need to configure Hasura for my application.

**Requirements:**
- Database schema: {{DATABASE_SCHEMA}}
- User roles: {{USER_ROLES}}
- Custom business logic: {{CUSTOM_LOGIC}}
- Real-time features: {{REALTIME_FEATURES}}
- Integration needs: {{INTEGRATION_NEEDS}}

**Please provide:**

1. **Table Configuration**
   - Tracking tables
   - Relationships setup
   - Computed fields
   - Custom SQL functions

2. **Permission System**
   - Role definitions
   - Row-level security
   - Column permissions
   - Aggregation permissions

3. **Actions & Events**
   - Custom actions
   - Event triggers
   - Scheduled triggers
   - Webhook handlers

4. **Remote Schemas**
   - Remote schema stitching
   - Permission forwarding
   - Type merging
   - Error handling

5. **Metadata Management**
   - Migrations workflow
   - Metadata as code
   - Environment management
   - CI/CD integration

Include complete metadata configuration examples.