Your comments
Thanks for confirming and providing your suggestions. I have recorded this internally as SG-17708.
Hello, Pavel! Please try build 25.1.087, which should now handle tags notes (Help|Check for Latest Build). The code was already prepared to handle several notes of the same category per commit, so I think it should address your questions and concerns reasonably well.
Given these changes, what (minimum set of) additional modifications would you like to see in 25.2?
Thanks, Pavel! Since version 25.1 is already in feature freeze, displaying annotated tag notes alongside the tag would be too significant a change. What I can probably offer is to resolve annotated tags into commits when reading the notes and then display them in the right area of the commit graph, just as if it were a regular commit note.
Completed for 25.1 (RC).
Will be present for 25.1.058 Preview build.
Present in 25.1.054 Preview build. For details, refer to:
How important are your notes? How prominently should the icon be placed?
Option 1

Option 2

Option 3

What is the exact content of these notes? I'm wondering whether they should show up inlined? See "SUCCESS" and "FAILURE":

Customer support service by UserEcho
Do you mean something like: "Foo Bar: @ai" where "@ai" should be replaced?