The navbar now implements a collapsing list of projects. It was just a matter of implementing a standard Bootstrap drop-down navmenu, but having never done it, took me a while to sort out. (Hint for those who follow: Be sure you’re reading the Bootstrap docs for the version of Bootstrap you’re actually using. :-)
As I continue to explore the lightbi theme, I’m noticing that it doesn’t implement collapsing menus. You can define a hierarchical page structure in the config file (explicitly) but it doesn’t get displayed in an elegant, “click to reveal” kinda way. Worse, I need a mechanism that discovers the structure dynamically, not by hard coding in the config. But fortunately, I might have found a solution.