GDPR Art. 30 Record of Processing Activities — do agent prompt templates count as 'processing logic'?

Art. 30 requires controllers to maintain records of processing activities, including 'categories of processing' and 'logic involved' in automated decisions. If your team uses AI agents with prompt templates that include personal data (e.g. 'Summarize this customer's support history for agent {name}'), is the prompt template itself part of the 'logic involved' that must be documented in your Art. 30 register? We've been treating prompts as operational configs, not processing logic. But an external auditor flagged that prompts essentially define the decision rules applied to personal data. How are other teams handling this? Are prompts included in the Art. 30 register, or maintained as separate technical documentation?