ci: keep the GOOBJ link parity gate off the push pipeline

Assisted-by: GLM 5.3 Flash

verify/goobj_link_test.go

@@ -111,11 +111,18 @@ func fieldAfterLinkLog(line, flag string) string {
 }
 
 // TestGOOBJLinkRegression is the per-architecture end-to-end gate
-// described at the top of this file.
+// described at the top of this file.  It is a deliberate verification,
+// not a suite member: building the gasm binary and cross-linking a
+// module per architecture is minutes of work the shared one-core runner
+// beside the forge cannot afford on every push, so it runs opt-in, the
+// justfile's link-parity recipe being the intended way.
 func TestGOOBJLinkRegression(t *testing.T) {
 	if testing.Short() {
 		t.Skip("builds the gasm binary and links Go programs")
 	}
+	if os.Getenv("GASM_LINK_PARITY") == "" {
+		t.Skip("deliberate verification: set GASM_LINK_PARITY=1 (just link-parity)")
+	}
 	goBin, err := exec.LookPath("go")
 	if err != nil {
 		t.Skip("no Go toolchain available")