dsh-flight-compare

`dsh-flight-compare` is a DeepSeek Harness plugin that registers the `flight_compare` tool. The tool fetches airfare prices from two data sources—Travelpayouts and Amadeus—aggregates them by flight number and date, and outputs a Markdown table containing the lowest price and its source. The plugin is built on Node.js, supports whole-month or single-day queries, reads its configuration from environment variables, and includes detailed installation and usage instructions.