refactor backend module architecture

tests/test_scraper_domain.py

@@ -0,0 +1,29 @@
+import importlib
+
+from app.domain.scraper import NfoReader
+
+
+def test_nfo_reader_reads_values_after_scraper_consolidation(tmp_path):
+    """合并后的 scraper 模块应继续读取单值和重复 NFO 元素。"""
+    nfo_path = tmp_path / "movie.nfo"
+    nfo_path.write_text(
+        "<movie><title>MoviePilot</title><genre>剧情</genre><genre>音乐</genre></movie>",
+        encoding="utf-8",
+    )
+
+    reader = NfoReader(nfo_path)
+
+    assert reader.get_element_value("title") == "MoviePilot"
+    assert [element.text for element in reader.get_elements("genre")] == [
+        "剧情",
+        "音乐",
+    ]
+
+
+def test_legacy_nfo_import_reuses_scraper_module():
+    """旧插件 NFO 导入路径应映射到合并后的 scraper 模块。"""
+    legacy = importlib.import_module("app.helper.nfo")
+    canonical = importlib.import_module("app.domain.scraper")
+
+    assert legacy is canonical
+    assert legacy.NfoReader is NfoReader