Fix planned task splitting and progress summaries

pkg/agent/session_planner_test.go

@@ -0,0 +1,23 @@
+package agent
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestSummarizePlannedTaskProgressBodyPreservesUsefulLines(t *testing.T) {
+	t.Parallel()
+
+	body := "subagent 已写入 config.json。\npath: /root/.clawgo/config.json\nagent_id: tester\nrole: testing\ndisplay_name: Test Agent\ntool_allowlist: [filesystem shell]\nrouting_keywords: [test qa]\nsystem_prompt_file: agents/tester/AGENT.md"
+	out := summarizePlannedTaskProgressBody(body, 6, 320)
+
+	if !strings.Contains(out, "subagent 已写入 config.json。") {
+		t.Fatalf("expected title line, got:\n%s", out)
+	}
+	if !strings.Contains(out, "agent_id: tester") {
+		t.Fatalf("expected agent id line, got:\n%s", out)
+	}
+	if strings.Contains(out, "subagent 已写入 config.json。 path:") {
+		t.Fatalf("expected multi-line formatting, got:\n%s", out)
+	}
+}