Architecture
How the system fits together: the route trees, the data model, and the decisions behind them.
Backend
Spring Boot service: package layout, entities and migrations, scheduling, integrations, security.
Frontend
React SPA: routing, state, the API layer, permissions, grids, forms, and styling.
DevOps
Running it locally and in production: Docker, environments, CI/CD, releases, troubleshooting.
Monitoring
The observability stack — metrics, logs, traces, dashboards, and alerting.
Testing
The test suites, what each one covers, and the gates a change has to pass.
Payroll Compliance
Philippine payroll rules the engine implements: contributions, withholding tax, and BIR forms.
User Guide
Task-by-task guides for the people who use the product day to day.
API Reference
REST conventions, authentication, and generated reference for every endpoint.