bryan-cmf/dsh-cross-search: Multi-Engine Cross-Validation Search Plugin

The DeepSeek Harness (DSH) plugin `bryan-cmf/dsh-cross-search` is a web-enabled tool designed to address the issue of result bias in single search engines. It supports multi-engine parallel retrieval and cross-validation across engines such as Brave and Tavily, along with URL deduplication. Based on result consistency, it classifies search results into three confidence levels: HIGH, MEDIUM, and LOW. Developers need to configure the relevant API keys or use Keyless-supported engines, and enable the plugin through a configuration file, thereby providing agents with more reliable and efficient retrieval capabilities.