ConstraintThe product problem
A Node.js data-enrichment utility that reads Excel workbooks, extracts domains, discovers contact emails, and writes structured results. The engineering challenge is to turn that scope into a legible system with explicit inputs, dependable workflow boundaries, and an outcome that can be inspected and maintained.
SystemThe architecture decision
The reviewed implementation routes targets / collection policy through acquisition, parsing & enrichment, crosses web sources, proxies & enrichment apis where required, and produces structured dataset.
OutcomeThe operating result
SERP is included as documented engineering work. Its source structure, technology stack, and functional flow are presented here even though no verified public deployment is currently available.