added more config to searx

modules/nixos-modules/server/searx.nix

@@ -28,11 +28,46 @@
       searx = {
         enable = true;
         environmentFile = config.sops.secrets."services/searx".path;
+
+        # Rate limiting
+        limiterSettings = {
+          real_ip = {
+            x_for = 1;
+            ipv4_prefix = 32;
+            ipv6_prefix = 56;
+          };
+
+          botdetection = {
+            ip_limit = {
+              filter_link_local = true;
+              link_token = true;
+            };
+          };
+        };
+
         settings = {
           server = {
             port = 8083;
             secret_key = "@SEARXNG_SECRET@";
           };
+
+          # Search engine settings
+          search = {
+            safe_search = 2;
+            autocomplete_min = 2;
+            autocomplete = "duckduckgo";
+          };
+
+          # Enabled plugins
+          enabled_plugins = [
+            "Basic Calculator"
+            "Hash plugin"
+            "Tor check plugin"
+            "Open Access DOI rewrite"
+            "Hostnames plugin"
+            "Unit converter plugin"
+            "Tracker URL remover"
+          ];
         };
       };
     };