Improve vendor lead discovery output

[tolga-tom-nook]

Summary

• Improves the vendor-lead-discovery paid seed product from three generic rows into structured, actionable lead intelligence.
• Adds segment filtering, scores, buyer value, example targets, route shapes, suggested paid tools, next actions, and a Pyrimid/x402 integration checklist.
• Keeps the existing x402 payment gate/catalog flow unchanged; only the paid output quality changes.

Bounty fit

MYA/Pyrimid job #25 asks to improve vendor-lead-discovery output with useful GitHub/MCP/x402 target discovery, scoring, and clean JSON output for a $20 USDC merged/accepted PR bounty.

Validation

• npx tsc --noEmit
• npm run build
• git diff --check