feat(explore): feature the Homelab space instead of its individual rooms

Swaps #homelabbing/#proxmox for their parent #homelab:codestorm.net
space, so browsing it surfaces the whole space rather than two
hand-picked children.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

config.json

@@ -4,8 +4,8 @@
   "allowCustomHomeservers": true,
   "featuredCommunities": {
     "openAsDefault": false,
-    "spaces": ["!-1ZBnAH-JiCOV8MGSKN77zDGTuI3pgSdy8Unu_DrDyc"],
-    "rooms": ["#jellyfin:matrix.org", "#homelabbing:codestorm.net", "#proxmox:codestorm.net"],
+    "spaces": ["!-1ZBnAH-JiCOV8MGSKN77zDGTuI3pgSdy8Unu_DrDyc", "#homelab:codestorm.net"],
+    "rooms": ["#jellyfin:matrix.org"],
     "servers": ["matrixrooms.info"]
   },
   "hashRouter": {