fix: seed脚本去掉KnowledgeStore不支持的category参数

seed_contract_risks.py

@@ -279,7 +279,7 @@ def main():
                 title=risk["title"],
                 content=risk["content"],
                 doc_type=risk["doc_type"],
-                category=risk.get("category"),
+                
                 source=risk.get("source", "BossAi"),
             )
             count += 1

seed_debt_templates.py

@@ -271,7 +271,7 @@ def main():
                 title=tmpl["title"],
                 content=tmpl["content"],
                 doc_type=tmpl["doc_type"],
-                category=tmpl.get("category"),
+                
                 source=tmpl.get("source", "BossAi"),
             )
             count += 1