Internal link opportunity mapper

Matching is whole word, case insensitive, and tolerates one plural s on the last word, so "compost guide" matches "compost guides". The first match per page pair is reported; the rest of that pair's sentences are skipped. Click depth is a breadth-first walk from the first CSV row over the links column, and "not reached" means no link path exists in the pasted data. Sentence splitting is a heuristic, so abbreviation dots can split one sentence in two. Nothing is crawled or fetched: the tool reads exactly the CSV you paste, so stale exports produce stale conclusions.