- Replace class-validator with plain TypeScript interfaces in AI DTOs
- Fix AIModel field names (inputCostPer1k instead of inputCostPer1m)
- Fix AIUsageLog field mapping (promptTokens, completionTokens, cost)
- Add 'branches', 'financial', 'sales' to MCP ToolCategory
- Add branchId to McpContext interface
- Create stub entities for BranchPaymentTerminal and PaymentTransaction
- Create CircuitBreaker utility for payment transactions
- Create database config and error classes for base.service.ts
- Fix type assertions for fetch response.json() calls
- Align PaymentStatus and PaymentMethod types between entities and DTOs
- Add @types/pg dependency
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
