工程收款测算

Deterministic construction payment toolkit for contractors (payee side) - progress payment claim and over-payment detection, quality retention and defects liability period checks against a verified 3% cap of the settled contract price with a liability period normally one year and never above two years, overdue interest quantification, a deadline ledger for priority of payment and the three-year limitation period, final account audit-reduction analysis, and a multi-project health check. Basis, Jianzhi [2017] No.138 and Civil Code Article 188. Pay ratios, rates and the priority period are user inputs. Pure standard library, 24 self-test assertions, Markdown report written to file. Not legal advice.

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