I do think OP should speak with their counselor, that is always the first place to go for advice.
But, I disagree that this question is only asking for ‘serious’ infractions as it clearly states this school wants to know about any academic or behavioral misconduct that resulted in a disciplinary action, as happened in OP’s case. The question also states the list of possible disciplinary actions are ‘not limited’ to the examples as shown.
The school I work for asks this type of discipline question because we take any academic integrity violation seriously and would expect this be reported and explained by the student. If the student didn’t report it and we found out in another way, it would be difficult for an applicant to overcome that and be admitted. There are plenty of colleges that don’t ask this question so no worries for OP at those.
Lastly, I don’t really know what posters mean by something not being on one’s ‘permanent record.’ If talking about being on a student’s transcript, many states do not allow disciplinary actions to be shown on transcripts (for students who attend public schools.) That doesn’t mean students don’t have to report a disciplinary violation.