修改GraphRAG后端，另外两本小说入库

backend/run_import.py

@@ -5,25 +5,29 @@
 用法:
   python run_import.py          # 增量导入（MERGE，不删除现有数据）
   python run_import.py --clear  # 清空图谱后全量重新导入
+    python run_import.py ldj      # 仅导入鹿鼎记
+    python run_import.py dtslz tlbb --clear  # 清空后导入指定小说
 """
 
 import sys
 from dotenv import load_dotenv
 from graph_query import get_driver
-from graph_builder import build_graph
+from graph_builder import build_all_graphs, SUPPORTED_NOVELS
 
 load_dotenv()
 
 
 def main():
     clear = "--clear" in sys.argv
+    novels = [arg for arg in sys.argv[1:] if not arg.startswith("--")]
+    selected = novels or list(SUPPORTED_NOVELS)
 
     print("Connecting to Neo4j...")
     driver = get_driver()
     driver.verify_connectivity()
     print("Connected.\n")
 
-    build_graph(driver, clear=clear)
+    build_all_graphs(driver, novels=selected, clear=clear)
 
     print("\nGraph stats:")
     from graph_query import get_graph_stats