[Graphviz Visual Editor] Generate SVG?

Q3: Can Graphviz Visual Editor generate SVG for the graph?

I’m thinking this isn’t currently available because I don’t see it under “Graph rendering”, but maybe I’m looking in the wrong place…?

No, not yet. Not directly. You have to open the debugger with F12 and then use the inspector to find the SVG and copy it. Exactly how depends on which browser you use.