feat(windows): install cassowary

flake.lock

@@ -86,6 +86,26 @@
         "url": "ssh://gitsrht@git.sourcehut.005540.xyz/~logistic-bot/breezex-cursor"
       }
     },
+    "cassowary": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1738515974,
+        "narHash": "sha256-dxlfpu9uXREIKCAX+p6k6zGobDa4ruAP9a54PigHU3U=",
+        "ref": "refs/heads/master",
+        "rev": "6d7d3560e8e5660ae270b82c844cd9cb77a4bd97",
+        "revCount": 6,
+        "type": "git",
+        "url": "ssh://gitsrht@git.sourcehut.005540.xyz/~logistic-bot/cassowary"
+      },
+      "original": {
+        "type": "git",
+        "url": "ssh://gitsrht@git.sourcehut.005540.xyz/~logistic-bot/cassowary"
+      }
+    },
     "devshell": {
       "inputs": {
         "nixpkgs": [
@@ -750,6 +770,7 @@
     "root": {
       "inputs": {
         "breezex-cursor": "breezex-cursor",
+        "cassowary": "cassowary",
         "home-manager": "home-manager",
         "nix-doom-emacs-unstraightened": "nix-doom-emacs-unstraightened",
         "nixos-06cb-009a-fingerprint-sensor": "nixos-06cb-009a-fingerprint-sensor",