Add clickable host bios linking to host detail pages on Nuggets; v2.0.21

Each host card on /nuggets now links to /nuggets/hosts/:hostId showing
the host's full photo, bio, and listen links. Archived hosts return a
graceful "not found" page with a back link.

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

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "siteforge",
-  "version": "2.0.3",
+  "version": "2.0.20",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "siteforge",
-      "version": "2.0.3",
+      "version": "2.0.20",
       "dependencies": {
         "@dnd-kit/core": "^6.3.1",
         "@dnd-kit/sortable": "^10.0.0",