Draw an outline of the genome alignment behind 'too many markers' message

Something very useful about Nextclade is that you can see very clearly what proportion of the genome a sequence covers - as it draws a little rectangle that aligns up with the genome at the bottom. However if there's too many markers, then it shows nothing except that error message. (I am aware one can select 'Parent' as reference which almost always reduces the number of markers down to something reasonable.) But today I thought that also, one could draw behind the error message a very small rectangle (maybe half-height, maybe 'faded') - that just shows the genome coverage, no markers. <img width="658" height="115" alt="Image" src="https://github.com/user-attachments/assets/a44349b1-c699-4414-9038-ceac1997aef0" /> This is absolutely not required, but it might be kind of fun and useful.