feat: 优化导出文件质量

tests/integration/test_routes.py

@@ -262,6 +262,8 @@ def test_result_pages_render_seeded_data():
     assert 'onclick="window.location.reload()"' in task_response.text
     assert hotspot_response.status_code == 200
     assert "热点总结" in hotspot_response.text
+    assert "downloadExport('/api/export/hotspots/hot-result.md'" in hotspot_response.text
+    assert "downloadExport('/api/export/hotspots/hot-result/comments.csv'" in hotspot_response.text
     assert "评论样本" in hotspot_response.text
     assert "关联内容" in hotspot_response.text
     assert "正向" in hotspot_response.text
@@ -272,6 +274,8 @@ def test_result_pages_render_seeded_data():
     assert "<pre" not in hotspot_response.text
     assert item_response.status_code == 200
     assert "内容总结" in item_response.text
+    assert "downloadExport('/api/export/items/item-result.md'" in item_response.text
+    assert "downloadExport('/api/export/items/item-result/comments.csv'" in item_response.text
     assert "评论样本" in item_response.text
     assert "Top 标签" in item_response.text
     assert "评论内容" in item_response.text
@@ -306,8 +310,10 @@ def test_report_pages_render_empty_state_when_report_missing():
 
     assert hotspot_response.status_code == 200
     assert "报告生成中，请稍候" in hotspot_response.text
+    assert 'title="报告尚未生成"' in hotspot_response.text
     assert item_response.status_code == 200
     assert "报告生成中，请稍候" in item_response.text
+    assert 'title="报告尚未生成"' in item_response.text
 
 
 def test_report_pages_warn_when_ai_sample_is_insufficient():

tests/unit/test_export.py

@@ -8,7 +8,12 @@ def test_labels_to_text_joins_json_array_with_chinese_comma():
 
 def test_safe_csv_field_prevents_formula_injection_and_newlines():
     assert safe_csv_field("=1+1") == "'=1+1"
+    assert safe_csv_field("+1+1") == "'+1+1"
+    assert safe_csv_field("-1+1") == "'-1+1"
+    assert safe_csv_field("@SUM(1,1)") == "'@SUM(1,1)"
     assert safe_csv_field("hello\nworld") == "hello world"
+    assert safe_csv_field("hello\r\nworld") == "hello world"
+    assert safe_csv_field("hello\rworld") == "hello world"
 
 
 def test_safe_filename_replaces_illegal_chars_and_truncates_keyword():