Native s1 tools for the DeepSeek Harness (DSH)

Key features

• Native s1 tools for the DeepSeek Harness (DSH).
• The package also bundles a s1 skill (ctx.skills.register), which teaches the model how to pick the right tool and tune parameters — quick lookup vs deep research, source/recency signals, Chinese-query engine choice, and when to follow a search result with s1_crawl.
• The package is both the bundle (its dsh.bundle.patch → cordis.patch.yml) and the plugin (its main entry exports name/inject/apply).
• Unlike the MCP server (search1api-mcp, a generic bridge that surfaces as mcp__search1api__) or the CLI skill (which teaches the model to shell out to s1), this package registers first-class DSH tools named s1_ — same layer as read, bash, subagent, workflow.