simplify MCPHub extensions and restore Hermes web tools

platform/hermes/config.yaml

@@ -36,8 +36,11 @@ terminal:
   lifetime_seconds: 1800
 
 web:
-  search_backend: "searxng"
-  extract_backend: "native"
+  # Keenable is bundled with Hermes and provides both search and extraction
+  # through its keyless tier. This remains available after Hermes moved to
+  # Unraid, where the former Athena-local SearXNG no longer exists.
+  search_backend: "keenable"
+  extract_backend: "keenable"
   extract_char_limit: 15000
   keyless_fallback: true
   keyless_rescue: true
@@ -161,7 +164,7 @@ skills:
   creation_nudge_interval: 20
 
 plugins:
-  enabled: ["web-searxng"]
+  enabled: ["browser-browser-use", "web-keenable"]
 
 timeouts:
   tools: