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>

modules/nixos/system/kernel-tweaks/default.nix

@@ -0,0 +1,29 @@
+{
+  config,
+  lib,
+  ...
+}:
+with lib;
+with lib.metacfg;
+let
+  cfg = config.metacfg.system.kernelTweaks;
+in
+{
+  options.metacfg.system.kernelTweaks = with types; {
+    enable = mkBoolOpt false "Whether or not to enable desktop kernel optimizations.";
+    pmFreezeTimeout = mkOption {
+      type = types.int;
+      default = 30000;
+      description = "PM freeze timeout in milliseconds.";
+    };
+    enableZram = mkBoolOpt true "Enable zram swap.";
+  };
+
+  config = mkIf cfg.enable {
+    boot.kernel.sysctl = {
+      "power.pm_freeze_timeout" = cfg.pmFreezeTimeout;
+    };
+
+    zramSwap.enable = cfg.enableZram;
+  };
+}

modules/nixos/system/no-sleep/default.nix

@@ -0,0 +1,28 @@
+{
+  config,
+  lib,
+  ...
+}:
+with lib;
+with lib.metacfg;
+let
+  cfg = config.metacfg.system.noSleep;
+in
+{
+  options.metacfg.system.noSleep = with types; {
+    enable = mkBoolOpt false "Whether or not to disable all sleep targets.";
+    disableGdmAutoSuspend = mkBoolOpt false "Disable GDM auto-suspend.";
+    ignoreLidSwitch = mkBoolOpt false "Ignore lid switch events.";
+  };
+
+  config = mkIf cfg.enable {
+    systemd.targets.sleep.enable = false;
+    systemd.targets.suspend.enable = false;
+    systemd.targets.hibernate.enable = false;
+    systemd.targets.hybrid-sleep.enable = false;
+
+    services.displayManager.gdm.autoSuspend = mkIf cfg.disableGdmAutoSuspend false;
+
+    services.logind.settings.Login.HandleLidSwitch = mkIf cfg.ignoreLidSwitch "ignore";
+  };
+}