plugin: Censys — certificate and host search

[Giuseppe552]

Data source: Censys Search API

Input: Domain, IP
Requires API key: Yes (free tier: 250 queries/month)

What it would return:

• Certificate nodes (issuer, validity, SANs)
• Host nodes (open services, software versions)
• Edges: HAS_CERT, OPEN_PORT

Implementation: Follow the pattern in apps/worker/src/plugins/shodan.ts. About 60 lines.

Rate limit: 2 requests/second on free tier.