dsh-invoice-tools: DeepSeek Harness E-Invoice Parsing and Expense Report Generation

`dsh-invoice-tools` is a native plugin for DeepSeek Harness, designed to address the challenges of processing Chinese e-invoices. It depends on the adjacent `dsh-src` and provides two core tools: `invoice_parse` and `invoice_summary`. The former parses invoices (prioritizing XML reading or regular-expression matching) and validates the data, while the latter categorizes, deduplicates, and generates expense reimbursement forms. Installation requires checking out and building the official source code first, then installing it via commands. The plugin supports single and batch processing, and pure scanned images are skipped. Output formats include Markdown or base64-encoded xlsx, which must be manually decoded. All data is processed entirely locally and is not uploaded to any API.