feat(web-arm): update to 25.11

- Migrate logind.extraConfig to logind.settings.Login
- Update dovecot alert for service rename (dovecot2 → dovecot)
- Fix sa-core buildGoModule env attribute for CGO_ENABLED

hosts/web-arm/channel

@@ -1 +1 @@
-https://channels.nixos.org/nixos-25.05
+https://channels.nixos.org/nixos-25.11

hosts/web-arm/configuration.nix

@@ -63,7 +63,7 @@
 
   time.timeZone = "Europe/Vienna";
 
-  services.logind.extraConfig = "RuntimeDirectorySize=2G";
+  services.logind.settings.Login.RuntimeDirectorySize = "2G";
 
   sops.age.sshKeyPaths = [ "/etc/ssh/ssh_host_ed25519_key" ];
   sops.defaultSopsFile = ./secrets.yaml;

hosts/web-arm/modules/grafana/alerting/service/dovecot_down.nix

@@ -15,7 +15,7 @@
           datasourceUid = "vm-datasource-uid";
           model = {
             editorMode = "code";
-            expr = "node_systemd_unit_state{state=\"active\", name=\"dovecot2.service\"} OR on() vector(0)";
+            expr = "node_systemd_unit_state{state=\"active\", name=\"dovecot.service\"} OR on() vector(0)";
             hide = false;
             intervalMs = 1000;
             legendFormat = "__auto";

hosts/web-arm/pkgs/sa-core.nix

@@ -17,7 +17,7 @@ buildGoModule rec {
   subPackages = [ "." ];
 
   # Optional tuning
-  CGO_ENABLED = 0;
+  env.CGO_ENABLED = "0";
   ldflags = [ "-s" "-w" ];
   doCheck = false;