Restructures all three dev targets (hiccup, replicant, squint) to use
the sidebar component as the actual app shell. The sidebar navigates
between three pages:
- Components — all UI component demos
- Icons — categorized gallery with all 50+ icons and size variants
- Sidebar — embedded sidebar example with dashboard layout
The sidebar includes a Targets section that links between all three dev
servers, with ports derived dynamically from the current port so they
stay correct when using a custom base port (bb dev-all 5000).
Port scheme: replicant=base+1, squint=base+2, hiccup=base+3.
cd49da661d