Fixed freshness check

internal/topdata/top_package.go

@@ -267,9 +267,6 @@ func newestTopDataSource(p *project.Project) (time.Time, string, error) {
 		if d.IsDir() && shouldSkipTopDataSourceDir(path, skipDirs) {
 			return filepath.SkipDir
 		}
-		if d.IsDir() {
-			return nil
-		}
 		info, err := d.Info()
 		if err != nil {
 			return err

internal/topdata/topdata_test.go

@@ -10692,6 +10692,34 @@ func TestBuildPackageFailsWhenCompiledOutputIsStale(t *testing.T) {
 	}
 }
 
+func TestBuildPackageFailsWhenTopDataSourceFileIsDeleted(t *testing.T) {
+	root := testProjectRoot(t)
+	mkdirAll(t, filepath.Join(root, "topdata", "data", "repadjust"))
+	writeFile(t, filepath.Join(root, "topdata", "base_dialog.json"), "{}\n")
+	writeFile(t, filepath.Join(root, "topdata", "data", "repadjust", "base.json"), `{
+  "output": "repadjust.2da",
+  "columns": ["Label"],
+  "rows": [{"id": 0, "Label": "TEST_LABEL"}]
+}`+"\n")
+	lockPath := filepath.Join(root, "topdata", "data", "repadjust", "lock.json")
+	writeFile(t, lockPath, "{}\n")
+
+	proj := testProject(root)
+	proj.Config.TopData.ReferenceBuilder = ""
+
+	if _, err := BuildNative(proj, nil); err != nil {
+		t.Fatalf("BuildNative failed: %v", err)
+	}
+
+	if err := os.Remove(lockPath); err != nil {
+		t.Fatalf("delete topdata source file: %v", err)
+	}
+
+	if _, err := BuildPackage(proj, nil); err == nil || !strings.Contains(err.Error(), "older than source file") {
+		t.Fatalf("expected deleted source file to invalidate compiled output, got %v", err)
+	}
+}
+
 func TestBuildPackageIgnoresTemplateSourcesForFreshness(t *testing.T) {
 	root := testProjectRoot(t)
 	mkdirAll(t, filepath.Join(root, "topdata", "data", "repadjust"))