台灣勞健保勞退法定費用計算引擎 — Taiwan statutory payroll calculation engine (TS core + MCP server + Python)

Email-driven payroll agent: an LLM reads messy submitted hours, but deterministic code owns name resolution and the process-or-clarify decision — one human approves the calculated run before it's sent back to the client. FastAPI · Postgres · real IRS Pub 15-T withholding.

Production patterns for payroll data engineering & compliance automation: Decimal-exact tax & overtime calculations, multi-format ingestion (CSV/EDI 834/REST), and audit-proof compliance reporting.