NSP to XCI converter

Purpose-built NSP to XCI conversion tool for technical users requiring cross-format game images. It accepts an NSP file, reads its container structure, and produces a standards-compliant XCI image with proper headers. Conceptually, the tool treats NSP as a container of content sets (NCAs) and re-packages the selected content into a single XCI image while preserving or excluding update content per user choice. It emphasizes data integrity, reproducibility, and traceable outputs. Benefits include streamlined archival workflows, reproducible builds for test environments, and verifiable outputs for emulation or deployment scenarios. Core features include container parsing, base-content extraction, header construction, optional update/DLC handling, and optional checksum generation for integrity verification. Use cases include archival digitization projects, QA testing pipelines, and emulation preparation where a cartridge-level image is required. The tool differentiates itself with explicit validation, deterministic logging, and a clear separation between required inputs (NSP, region, output) and optional enhancements (updates, checksums, batch runs).