A tiny DeepSeek Harness (DSH) plugin

Key features

• Settings → Plugins → Plugin configuration shows a "Search router" card: one row per active provider, numbered by fallback priority and draggable to reorder (also keyboard-reorderable), an inline editor per provider, an add-provider flow, and an Advanced fold (timeout, empty-results policy).
• A tiny DeepSeek Harness (DSH) plugin: one native WebSearchProvider registered into ctx.web, forwarding every web_search call to a search backend you choose — with sequential fallback when one fails.
• SearXNG keeps the router fully self-hostable — no commercial API needed.
• Two ways, targeting the same knobs — the GUI wins per field, and a GUI reset re-inherits the composition value.
• Every change applies live — no restart.