Use home-manager, ghostty home settings

flake.lock

@@ -149,6 +149,26 @@
         "type": "github"
       }
     },
+    "home-manager": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1752814804,
+        "narHash": "sha256-irfg7lnfEpJY+3Cffkluzp2MTVw1Uq9QGxFp6qadcXI=",
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "rev": "d0300c8808e41da81d6edfc202f3d3833c157daf",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "type": "github"
+      }
+    },
     "ixx": {
       "inputs": {
         "flake-utils": [
@@ -400,6 +420,7 @@
     "root": {
       "inputs": {
         "deploy-rs": "deploy-rs",
+        "home-manager": "home-manager",
         "lanzaboote": "lanzaboote",
         "nixos-hardware": "nixos-hardware",
         "nixpkgs": "nixpkgs_3",