refactor: stabilize runtime and unify config

pkg/tools/compat_alias_test.go

@@ -0,0 +1,37 @@
+package tools
+
+import (
+	"context"
+	"testing"
+)
+
+type captureAliasTool struct {
+	args map[string]interface{}
+}
+
+func (t *captureAliasTool) Name() string        { return "capture" }
+func (t *captureAliasTool) Description() string { return "capture" }
+func (t *captureAliasTool) Parameters() map[string]interface{} {
+	return map[string]interface{}{}
+}
+func (t *captureAliasTool) Execute(_ context.Context, args map[string]interface{}) (string, error) {
+	t.args = args
+	return "ok", nil
+}
+
+func TestAliasToolExecuteDoesNotMutateCallerArgs(t *testing.T) {
+	t.Parallel()
+
+	base := &captureAliasTool{}
+	tool := NewAliasTool("read", "", base, map[string]string{"file_path": "path"})
+	original := map[string]interface{}{"file_path": "README.md"}
+	if _, err := tool.Execute(context.Background(), original); err != nil {
+		t.Fatalf("execute failed: %v", err)
+	}
+	if _, ok := original["path"]; ok {
+		t.Fatalf("caller args were mutated: %+v", original)
+	}
+	if got, _ := base.args["path"].(string); got != "README.md" {
+		t.Fatalf("expected translated arg, got %+v", base.args)
+	}
+}