feat: migrate alpha and add impermanence

hosts/alpha/home.nix

@@ -1,3 +1,12 @@
-{...}: {
-  home.stateVersion = "23.11";
+{username, ...}: {
+  home.persistence."/persist/home/${username}" = {
+    directories = [
+      "Projects"
+      ".ssh"
+      ".local/share/zsh"
+    ];
+    allowOther = true;
+  };
+
+  home.stateVersion = "24.11";
 }