feat(modules): hardware modules — intel/amd/nvidia/audio/bluetooth/touchpad

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

modules/hardware/bluetooth.nix

@@ -0,0 +1,68 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+let
+  inherit (lib) mkEnableOption mkIf;
+in
+{
+  options.hardware.bluetooth.enhanced.enable = mkEnableOption "Enhanced Bluetooth support";
+
+  config = mkIf config.hardware.bluetooth.enhanced.enable {
+    # Enable Bluetooth
+    hardware.bluetooth = {
+      enable = true;
+      powerOnBoot = true;
+      settings = {
+        General = {
+          Experimental = true;
+        };
+      };
+    };
+
+    # Bluetooth services
+    services.blueman.enable = true;
+
+    # Bluetooth packages
+    environment.systemPackages = with pkgs; [
+      bluez
+      bluez-tools
+      blueman
+      bluetui
+    ];
+
+    # MT7925 bluetooth workaround — the bluetooth USB endpoint on
+    # Strix Halo can be slow to enumerate after warm reboot. Reloading
+    # modules helps. A cold boot (full power off) always works.
+    # See: https://github.com/moolooite/mt7925e-bt-heal
+    systemd.services.mt7925-bt-heal = {
+      description = "Unblock and power on MT7925 bluetooth";
+      after = [ "bluetooth.service" ];
+      wants = [ "bluetooth.service" ];
+      wantedBy = [ "multi-user.target" ];
+      serviceConfig = {
+        Type = "oneshot";
+        RemainAfterExit = true;
+        ExecStartPre = "${pkgs.coreutils}/bin/sleep 5";
+        ExecStart = pkgs.writeShellScript "mt7925-bt-heal" ''
+          # Only unblock if adapter has a valid MAC (firmware loaded)
+          # A warm reboot leaves the adapter with 00:00:00:00:00:00
+          # and rfkill unblock would kill it — skip in that case.
+          MAC=$(${pkgs.bluez}/bin/hciconfig hci0 2>/dev/null | grep "BD Address" | awk '{print $3}')
+          if [ -z "$MAC" ] || [ "$MAC" = "00:00:00:00:00:00" ]; then
+            echo "Bluetooth adapter not ready (MAC: $MAC) — needs cold boot"
+            exit 0
+          fi
+          echo "Bluetooth adapter found: $MAC"
+          ${pkgs.util-linux}/bin/rfkill unblock bluetooth
+          sleep 1
+          ${pkgs.bluez}/bin/bluetoothctl power on
+          echo "Bluetooth powered on"
+        '';
+      };
+    };
+  };
+}