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This skill equips Claude with specialized knowledge for architecting robust financial applications in Rust. It focuses on the critical pillars of FinTech development: eliminating precision errors by mandating rust_decimal over floating-point types, ensuring data integrity through immutable event sourcing patterns, and maintaining strict consistency with double-entry accounting principles. By providing concrete implementation patterns for currency newtypes, audit logging, and transaction boundaries, it serves as an essential guide for developers building trading systems, digital wallets, or payment gateways where mathematical accuracy and traceability are non-negotiable.
