fix retrieve final technical questions

src/Config/PromptBuilderConfig.php

@@ -306,6 +306,9 @@ final class PromptBuilderConfig
             '- If the source states signal logic such as green/red, output that signal logic only and do not expand it into operational recommendations or alarm semantics unless explicitly stated.',
             '- If the source lists application areas, repeat only those areas and do not broaden them.',
             '- If the source names an indicator and threshold, reproduce that exactly without extrapolation.',
+            '- For lowest, highest, smallest, largest, minimum, maximum, Grenzwert, Messbereich or Aufloesung questions, first identify the exact numeric extreme from the retrieved knowledge and answer that value directly.',
+            '- For numeric extreme questions, do not combine a value, device name, indicator name, range or product variant from different chunks unless the same retrieved entry explicitly connects them.',
+            '- If several devices or indicators are present, keep each device-indicator-range assignment separate and do not transfer an indicator from one product to another.',
             '- If the source states only a threshold function, do not expand it into broader control logic.',
             '- If a detail is not explicitly stated in the provided sources, say so plainly.',
             '- Prefer short, source-close sentences over explanatory expansion.',