feat(system): professionalize system configurations

- Consolidate imperative system settings into /etc/nixos/state.json
- Implement nomarchy.system options for DNS, Wifi powersave, Timezone, and hardware features
- Add declarative browser policies for Chromium/Brave based on theme
- Update toggles scripts to mutate system JSON and run sys-update --impure
- Remove obsolete imperative browser theme and redundant system modules

modules/system/hardware.nix

@@ -46,5 +46,22 @@ in
         options brcmfmac feature_disable=0x82000
       '';
     })
+
+    # System Features
+    (mkIf config.nomarchy.system.features.fingerprint {
+      services.fprintd.enable = true;
+    })
+
+    (mkIf config.nomarchy.system.features.fido2 {
+      security.pam.u2f = {
+        enable = true;
+        control = "sufficient";
+        cue = true;
+      };
+    })
+
+    (mkIf config.nomarchy.system.features.hybridGPU {
+      services.supergfxd.enable = true;
+    })
   ];
 }