fix: retry Agent Step2 once when first write attempt fails

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/test_agent_workflow.py

@@ -53,3 +53,33 @@ def test_write_wecom_report_extracts_markdown_block(monkeypatch):
     assert md is not None
     assert md.startswith("📰")
     assert "正文" in md
+
+
+def test_run_agent_workflow_retries_step2(monkeypatch):
+    import daily.agent_workflow as agent
+
+    calls = {"n": 0}
+
+    def fake_llm(system, user):
+        if '"trends"' in user:
+            calls["n"] += 1
+            if calls["n"] == 1:
+                raise RuntimeError("Bridge request timed out")
+            return "📰 **早报 · 2026-07-03**\n\n重试成功"
+        return json.dumps(
+            {"headline": "h", "opening": "o", "themes": [], "top_picks": [], "signals": []},
+            ensure_ascii=False,
+        )
+
+    monkeypatch.setattr(agent, "llm_chat", fake_llm)
+
+    md = agent.run_agent_workflow(
+        {"date": "2026-07-03"},
+        date_str="2026-07-03",
+        time_str="09:30 (UTC+8)",
+        updated="2026-07-02",
+    )
+
+    assert md is not None
+    assert "重试成功" in md
+    assert calls["n"] == 2