rNetwork: upgrade folk-graph-viewer with pan/zoom/drag, fitView, touch
pinch-zoom, zoom controls, persisted node positions, and incremental
drag updates. rSocials: new folk-socials-canvas component with campaign
and thread card nodes, Postiz slide-out panel, and canvas interactions.
Default / route now renders canvas view; old feed moved to ?view=feed.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
