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Follow-up corrections after review: 1. DuckDuckGo is NOT fixed. The VPS fallback egress has since been flagged by DuckDuckGo too (HTTP 202 + challenge markers), so it reports CAPTCHA on both paths. The contract and script docstring now say so instead of claiming a fix that had already expired. It stays enabled as best-effort coverage so a recovery shows up as a contribution. 2. The relationship between silent zeros and the verdict is now explicit in both the script output and the contract: an enabled expected engine that contributes zero with no error is REPORTED, not fatal. Only the <SEARCH_CHECK_MIN_ENGINES> floor and the extraction leg fail the run. This is deliberate - de-duplication and query-shape make a zero non-probative. 3. Recorded that 'google cse' uses a THIRD PARTY's public search-engine id hardcoded in the SearXNG build, not a key we own; its quota and availability are outside our control, and our own free key would need a wrapper (not built). VPS forward proxy is now a real service: /opt/fwd-proxy docker compose with restart: unless-stopped, a healthy healthcheck, and Docker enabled at boot.