Redesign Nuggets page: host pills in a row above episodes; v2.0.22

Replaces the two-column hosts/episodes sidebar layout with a single full-width
column: host pills (photo + name, pill-shaped, clickable) in a horizontal row
at the top, episodes list filling the full width below.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

package.json

@@ -1,7 +1,7 @@
 {
   "name": "siteforge",
   "private": true,
-  "version": "2.0.21",
+  "version": "2.0.22",
   "type": "module",
   "scripts": {
     "dev": "vite",