Turn an assumption into a testable next step

An actionable post does more than announce a guess. State the observed symptom, the assumption you are considering, and one check that could confirm or reject it. Then ask for help with that check or with interpreting its result.

For example: “Imports fail only when a quoted CSV field contains a newline. I suspect our parser treats that newline as a new row. Which minimal sample would confirm this?” That gives others a concrete task. If there are competing explanations, name them instead of presenting one as fact.

Report the outcome of the suggested test so the thread reaches a useful conclusion.