fix: update Firefox Sync configuration and proxy settings for improved functionality

hosts/fw/modules/firefox-sync.nix

@@ -3,7 +3,9 @@ let
   domain = "sync.cloonar.com";
   networkPrefix = config.networkPrefix;
 in {
-  sops.secrets.firefox-sync = { };
+  sops.secrets.firefox-sync = {
+    mode = "0777";
+  };
 
   security.acme.certs."${domain}" = {
     group = "nginx";
@@ -36,32 +38,19 @@ in {
       services.mysql.package = pkgs.mariadb;
       services.firefox-syncserver = {
         enable = true;
+        settings.host = "0.0.0.0";
         singleNode = {
           enable = true;
-          hostname = domain;
+          hostname = "0.0.0.0";
           url = "https://${domain}";
         };
-        settings = {
-          tokenserver.enable = true;
-        };
         secrets = "/run/secrets/firefox-sync";
-        logLevel = "trace";
-      };
-
-      services.nginx = {
-        enable = true;
-        virtualHosts."${domain}" = {
-          forceSSL = false;
-          enableACME = false;
-          locations."/" = {
-            proxyPass = "http://localhost:5000/";
-          };
-        };
+        logLevel = "debug";
       };
 
       networking.firewall = {
         enable = true;
-        allowedTCPPorts = [ 80 443 ];
+        allowedTCPPorts = [ 5000 ];
       };
 
       system.stateVersion = "23.05";