Thank you for your timely and attentive response.
Multi-level favorites, I personally envision that it is not just to save some temporary excellent notes, but can be extended as a way to manage them.
I want to use the save search function of this plugin to build a whole set of huge automatic search system, which can categorize and filter according to my pre-set rules, and can save these categorized filter conditions in a hierarchical way. For example, I want to search for notes that have both A and B but not C.
After that, I just need to create a new note, and use this multi-level preset search, just need to mouse to make a click, can quickly use these search criteria, to search for notes. I don't need to re-enter the complex and difficult to remember search criteria every time.
Of course considering the performance you are talking about, it may only need to be updated every once in a while, like once a day, or manually.
It might look something like this.
I look forward to your response regarding the feasibility of this idea.
