add linearmouse module

modules/homebrew.nix

@@ -42,6 +42,7 @@
       "aerospace"
       "hiddenbar"
       "keycastr"
+      "linearmouse"
       "localsend"
       "maccy"
       "snipaste"

modules/peripheral/home.nix

@@ -0,0 +1,17 @@
+{ config, pkgs, ... }:
+
+{
+  home.file.".config/linearmouse/linearmouse.json".text = builtins.toJSON {
+    "$schema" = "https://app.linearmouse.org/schema/0.10.0";
+    schemes = [{
+      "if" = {
+        device.category = "mouse";
+      };
+      scrolling.reverse.vertical = true;
+      pointer = {
+        acceleration = 0;
+        speed = 0.6;
+      };
+    }];
+  };
+}

modules/peripheral/system.nix

@@ -0,0 +1,21 @@
+{ config, pkgs, ... }:
+
+{
+  # Key remapping using hidutil via launchd agent
+  # Swaps Caps Lock -> Left Control, Right Control -> Caps Lock
+  launchd.user.agents.remap-keys = {
+    serviceConfig = {
+      ProgramArguments = [
+        "/usr/bin/hidutil"
+        "property"
+        "--set"
+        ''{"UserKeyMapping":[{"HIDKeyboardModifierMappingSrc":0x700000039,"HIDKeyboardModifierMappingDst":0x7000000E0},{"HIDKeyboardModifierMappingSrc":0x7000000E4,"HIDKeyboardModifierMappingDst":0x700000039}]}''
+      ];
+      RunAtLoad = true;
+      KeepAlive = false;
+      Label = "org.nixos.remap-keys";
+      StandardErrorPath = "/tmp/remap-keys.err";
+      StandardOutPath = "/tmp/remap-keys.out";
+    };
+  };
+}