Add full monorepo: virtual-banker, backend, frontend, docs, scripts, deployment

Co-authored-by: Cursor <cursoragent@cursor.com>

docs/specs/deployment/scaling.md

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+# Scaling Strategy Specification
+
+## Overview
+
+Horizontal and vertical scaling strategies for the platform.
+
+## Horizontal Scaling Patterns
+
+### Application Scaling
+
+**Method**: Add more service instances
+**Auto-scaling**: Based on CPU, memory, request rate
+**Load Balancing**: Distribute traffic across instances
+
+### Database Scaling
+
+**Read Replicas**: Scale read capacity
+**Sharding**: Partition data for write scaling
+**Connection Pooling**: Efficient connection management
+
+## Database Scaling
+
+### Read Replicas
+
+**Strategy**: Multiple read replicas for read-heavy workloads
+**Replication**: Async replication from primary
+**Use Case**: API read operations
+
+### Sharding
+
+**Strategy**: Partition data by chain_id
+**Implementation**: Database partitioning
+**Use Case**: Very large datasets
+
+## Caching Strategy
+
+### Redis Cache
+
+**Use Cases**:
+- API response caching
+- Session storage
+- Rate limiting counters
+- Frequently accessed data
+
+### CDN Caching
+
+**Use Cases**:
+- Static assets
+- API responses (short TTL)
+
+## Load Balancing Configuration
+
+**Method**: Kubernetes service or external load balancer
+**Algorithm**: Round-robin or least connections
+**Health Checks**: Regular health checks, route to healthy instances
+
+## References
+
+- Infrastructure: See `infrastructure.md`
+- CI/CD: See `cicd.md`
+