chore: import upstream snapshot with attribution

internal/parser/languages/php_chain_test.go

@@ -0,0 +1,30 @@
+package languages
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/zzet/gortex/internal/graph"
+)
+
+func TestPHPExtractor_FactoryChainReceiver(t *testing.T) {
+	src := []byte("<?php\n" +
+		"function builder() { return new Widget(); }\n" +
+		"function run() {\n" +
+		"    builder()->withX()->build();\n" +
+		"}\n")
+	res, err := NewPHPExtractor().Extract("w.php", src)
+	require.NoError(t, err)
+
+	var build *graph.Edge
+	for _, e := range res.Edges {
+		if e.Kind == graph.EdgeCalls && e.To == "unresolved::*.build" {
+			build = e
+		}
+	}
+	require.NotNil(t, build, "build() call edge")
+	if got, _ := build.Meta["receiver_expr"].(string); got != "builder().withX()" {
+		t.Errorf("receiver_expr = %q, want builder().withX()", got)
+	}
+}