refactor(nix): extract common system configs into reusable modules

Create 6 new NixOS modules to reduce duplication across system configs:
- hardware/wooting: Wooting keyboard udev rules and Bluetooth compat
- services/nginx-base: Common nginx server settings
- services/acme-base: ACME certificate defaults
- services/xremap: Key remapping with sensible defaults
- system/no-sleep: Disable sleep/suspend/hibernate targets
- system/kernel-tweaks: PM freeze timeout and zram configuration

Update system configuration files to use these new modules.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

systems/x86_64-linux/mx/acme.nix

@@ -1,6 +1,4 @@
 {
-  pkgs,
-  lib,
   config,
   ...
 }:
@@ -9,14 +7,9 @@
     sopsFile = ../../../.secrets/hetzner/internetbs.yaml; # bring your own password file
   };
 
-  security.acme = {
-    acceptTerms = true;
-    defaults = {
-      email = "harald@hoyer.xyz";
-      dnsProvider = "cloudflare";
-      credentialsFile = config.sops.secrets.internetbs.path;
-    };
-    certs = {
+  metacfg.services.acmeBase.credentialsFile = config.sops.secrets.internetbs.path;
+
+  security.acme.certs = {
       "surfsite.org" = {
         extraDomainNames = [ "*.surfsite.org" ];
       };
@@ -71,5 +64,4 @@
         extraDomainNames = [ "*.harald-hoyer.de" ];
       };
     };
-  };
 }

systems/x86_64-linux/mx/default.nix

@@ -22,6 +22,8 @@
   services.tailscale.enable = true;
 
   metacfg = {
+    services.nginxBase.enable = true;
+    services.acmeBase.enable = true;
     emailOnFailure.enable = true;
     base.enable = true;
     nix.enable = true;
@@ -42,7 +44,6 @@
     dates = "04:00";
     operation = "switch";
     allowReboot = true;
-    #    flake = lib.mkForce "git+file:///var/lib/gitea/repositories/harald/nixcfg.git#mx";
     flake = lib.mkForce "/root/nixcfg/.#mx";
   };
 

systems/x86_64-linux/mx/nginx.nix

@@ -1,21 +1,6 @@
 { ... }:
 {
-  users.users.nginx.extraGroups = [ "acme" ];
-  services.nginx = {
-    enable = true;
-    clientMaxBodySize = "1000M";
-    appendHttpConfig = ''
-      log_format vcombined '$host:$server_port '
-              '$remote_addr - $remote_user [$time_local] '
-              '"$request" $status $body_bytes_sent '
-              '"$http_referer" "$http_user_agent"';
-      access_log /var/log/nginx/access.log vcombined;
-    '';
-    recommendedGzipSettings = true;
-    recommendedOptimisation = true;
-    recommendedProxySettings = true;
-    recommendedTlsSettings = true;
-    virtualHosts = {
+  services.nginx.virtualHosts = {
       "00000" = {
         useACMEHost = "hoyer.xyz";
         serverName = "_";
@@ -157,5 +142,4 @@
         forceSSL = true;
       };
     };
-  };
 }