User side:
When clicking into the span selection text field, I want to be able to select from the projects in my project tree.
Tech note:
In a first version, it might enough to record the name of the project (with ancestors). Later, we will probably want to map projects in the tree to unique IDs (timestamp or similar) and record spans with those IDs. (To not have a user accidentically revive an ancient project by registering a span for a new project of the same name; but that will only become relevant once we actually have reports & evaluation.)
Next after issue #2
User side: When clicking into the span selection text field, I want to be able to select from the projects in my project tree.
Tech note: