nix: add installable package

flake.nix

@@ -1,5 +1,5 @@
 {
-  description = "A very basic flake";
+  description = "INSOMNIA agent runtime";
 
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
@@ -16,9 +16,22 @@
       system:
       let
         pkgs = nixpkgs.legacyPackages.${system};
+        insomnia = pkgs.callPackage ./package.nix { };
+        mkApp = name: description: {
+          type = "app";
+          program = "${insomnia}/bin/${name}";
+          meta.description = description;
+        };
       in
       {
-        packages.default = pkgs.callPackage ./package.nix { };
+        packages.default = insomnia;
+        packages.insomnia = insomnia;
+
+        apps.default = mkApp "tui" "Run the INSOMNIA terminal UI";
+        apps.tui = mkApp "tui" "Run the INSOMNIA terminal UI";
+        apps.pod = mkApp "pod" "Run the INSOMNIA Pod CLI";
+
+        checks.default = insomnia;
 
         devShells.default = import ./devshell.nix { inherit pkgs; };
       }