move karabiner-elements to homebrew, add macfuse and sshfs-mac

nix-darwin's karabiner module is broken with 15.7+ - the karabiner_grabber
and karabiner_observer binaries no longer exist, causing system daemons to
fail with exit code 78. Moved karabiner-elements to homebrew cask which
handles its own service registration correctly.

Also adds macfuse cask and gromgit/fuse/sshfs-mac brew, updates
agentcomputer-cli flake input, and tweaks zsh alias.

flake.lock

@@ -8,8 +8,8 @@
         ]
       },
       "locked": {
-        "lastModified": 1774217644,
+        "lastModified": 1774656030,
-        "narHash": "sha256-MnSCnEYGMZyfj42/8+frNDktCIpj5RUkGY50r29KirQ=",
+        "narHash": "sha256-9wurVeFSma2w1sFb/ybWKORCWH+TZRuBmE5k+czKLxk=",
         "path": "/Users/rathi/Documents/GitHub/companion/agentcomputer/apps/cli",
         "type": "path"
       },

home/default.nix

@@ -2,7 +2,6 @@
   imports = [
     ./common.nix
     ./colima.nix
-    ./karabiner.nix
     ./rectangle.nix
   ];
 }

home/zsh.nix

@@ -38,7 +38,7 @@
         ld = "lumen diff";
         lg = "lazygit";
         nim = "nvim .";
-        sshnet = "ssh -i ~/.ssh/atlas-ssh.txt rathiharivansh@152.53.195.59";
+        net = "rathiharivansh@152.53.195.59";
 
         # nix helpers
         nr = "nix profile remove"; # nr <index> - remove from profile

modules/homebrew.nix

@@ -9,17 +9,20 @@
     };
 
     taps = [
-      # riptide-dev is still sourced from this tap.
       "humanlayer/humanlayer"
+      "gromgit/fuse"
     ];
 
     brews = [
       "bitwarden-cli"
+      "gromgit/fuse/sshfs-mac"
     ];
 
     casks = [
       "cap"
       "codex"
+      "karabiner-elements"
+      "macfuse"
       "rectangle"
       "raycast"
       "riptide-beta"

modules/macos.nix

@@ -1,33 +1,8 @@
-{
+{...}: {
-  lib,
-  pkgs,
-  ...
-}: let
-  karabinerAgentsDir =
-    "${pkgs.karabiner-elements}/Library/Application Support/org.pqrs/Karabiner-Elements/"
-    + "Karabiner-Elements Non-Privileged Agents v2.app/Contents/Library/LaunchAgents";
-in {
   security.pam.services.sudo_local.touchIdAuth = true;
 
-  services.karabiner-elements.enable = true;
+  # Karabiner-Elements is managed via Homebrew cask because nix-darwin's
-
+  # built-in module is broken with 15.7+ (missing karabiner_grabber/observer binaries).
-  # Upstream nix-darwin still expects Karabiner's old agent layout. Override it
-  # here until the built-in module catches up to the 15.7+ bundle structure.
-  # Karabiner-Elements 15.7.0 moved its user launch agents into the
-  # Non-Privileged Agents v2 bundle and renamed karabiner_grabber.
-  # nix-darwin's built-in module still points at the old top-level paths.
-  environment.userLaunchAgents."org.pqrs.karabiner.agent.karabiner_grabber.plist".enable =
-    lib.mkForce false;
-  environment.userLaunchAgents."org.pqrs.karabiner.agent.karabiner_observer.plist".enable =
-    lib.mkForce false;
-  environment.userLaunchAgents."org.pqrs.karabiner.karabiner_console_user_server.plist".enable =
-    lib.mkForce false;
-
-  environment.userLaunchAgents."org.pqrs.service.agent.Karabiner-Core-Service.plist".source = "${karabinerAgentsDir}/org.pqrs.service.agent.Karabiner-Core-Service.plist";
-  environment.userLaunchAgents."org.pqrs.service.agent.Karabiner-NotificationWindow.plist".source = "${karabinerAgentsDir}/org.pqrs.service.agent.Karabiner-NotificationWindow.plist";
-  environment.userLaunchAgents."org.pqrs.service.agent.Karabiner-Menu.plist".source = "${karabinerAgentsDir}/org.pqrs.service.agent.Karabiner-Menu.plist";
-  environment.userLaunchAgents."org.pqrs.service.agent.karabiner_console_user_server.plist".source = "${karabinerAgentsDir}/org.pqrs.service.agent.karabiner_console_user_server.plist";
-  environment.userLaunchAgents."org.pqrs.service.agent.Karabiner-MultitouchExtension.plist".source = "${karabinerAgentsDir}/org.pqrs.service.agent.Karabiner-MultitouchExtension.plist";
 
   system.defaults = {
     dock.autohide = true;