Restart Search Engine

Runs docker compose down then up for the local SearXNG container used by Search Engine.

Use it when search_engine fails with a connection error or HTTP 403 — both usually mean the container is down or running a stale config.

Requires Docker on the host and takes up to ~2 minutes. Requires confirmation: the model must tell you search failed and get an explicit follow-up "yes" before it stops and recreates the container.