exclude item without presentation details from search result
Pro Cloud edition of Coveo for Sitecore does not have the filtering/booting rule editor feature. You should instead add the filtering rule programmatically.
With Coveo for Sitecore Legacy UI framework: https://docs.coveo.com/en/752/coveo-for-sitecore-v4/using-boosting-or-filtering-rules-on-the-search-component-programmatically-using-the-coveo-for-sitecore-legacy-search-ui-framework
To only include indexed items that have a layout (presentation details) in the search results, you have to add a filter like this: `@haslayout=="1"`.
The field expression operator is `==` for exact match.
The value of the field expression is `"1"` as a string. This is the indexed value for a boolean `true`.