Fix planned task splitting and progress summaries

pkg/agent/session_planner_split_test.go

@@ -0,0 +1,33 @@
+package agent
+
+import "testing"
+
+func TestSplitPlannedSegmentsDoesNotSplitPlainNewlines(t *testing.T) {
+	t.Parallel()
+
+	content := "编写ai漫画创作平台demo\n让产品出方案，方案出完让前端后端开始编写，写完后交个测试过一下"
+	got := splitPlannedSegments(content)
+	if len(got) != 1 {
+		t.Fatalf("expected 1 segment, got %d: %#v", len(got), got)
+	}
+}
+
+func TestSplitPlannedSegmentsStillSplitsBullets(t *testing.T) {
+	t.Parallel()
+
+	content := "1. 先实现前端\n2. 再补测试"
+	got := splitPlannedSegments(content)
+	if len(got) != 2 {
+		t.Fatalf("expected 2 segments, got %d: %#v", len(got), got)
+	}
+}
+
+func TestSplitPlannedSegmentsStillSplitsSemicolons(t *testing.T) {
+	t.Parallel()
+
+	content := "先实现前端；再补测试"
+	got := splitPlannedSegments(content)
+	if len(got) != 2 {
+		t.Fatalf("expected 2 segments, got %d: %#v", len(got), got)
+	}
+}