stargazer: Add nixosTests.stargazer to passthru.tests

pkgs/servers/gemini/stargazer/default.nix

@@ -5,6 +5,7 @@
 , installShellFiles
 , scdoc
 , Security
+, nixosTests
 }:
 
 rustPlatform.buildRustPackage rec {
@@ -22,6 +23,10 @@ rustPlatform.buildRustPackage rec {
 
   doCheck = false; # Uses external testing framework that requires network
 
+  passthru.tests = {
+    basic-functionality = nixosTests.stargazer;
+  };
+
   nativeBuildInputs = [ installShellFiles scdoc ];
 
   buildInputs = lib.optional stdenv.isDarwin Security;