github-copilot-cli: fix build by preserving original filename (#501183)

pkgs/by-name/gi/github-copilot-cli/package.nix

@@ -32,12 +32,14 @@ stdenv.mkDerivation (finalAttrs: {
 
   installPhase = ''
     runHook preInstall
-    install -Dm755 copilot $out/bin/copilot
+    # Use libexec to preserve filename when calling makeBinaryWrapper
+    install -Dm755 copilot $out/libexec/copilot
     runHook postInstall
   '';
 
   postInstall = ''
-    wrapProgram $out/bin/copilot \
+    # Filename must explictly be "copilot" for internal self-referencing
+    makeWrapper $out/libexec/copilot $out/bin/copilot \
       --add-flags "--no-auto-update"
   '';