优化界面布局，参考CRM系统，调整字体，优化分页显示

src/web/blueprints/workorders.py

@@ -45,12 +45,7 @@ from src.core.query_optimizer import query_optimizer
 
 workorders_bp = Blueprint('workorders', __name__, url_prefix='/api/workorders')
 
-def get_assistant():
-    """获取TSP助手实例（懒加载）"""
-    global _assistant
-    if '_assistant' not in globals():
-        _assistant = TSPAssistant()
-    return _assistant
+# 移除get_assistant函数，使用service_manager
 
 def _ensure_workorder_template_file() -> str:
     """返回已有的模板xlsx路径；不做动态生成，避免运行时依赖问题"""
@@ -142,11 +137,13 @@ def get_workorders():
                     'category': workorder.category,
                     'priority': workorder.priority,
                     'status': workorder.status,
-                    'user_id': workorder.user_id,
-                    'assigned_to': workorder.assigned_to,
+                    'assignee': workorder.assignee,
+                    'source': workorder.source,
+                    'module': workorder.module,
+                    'created_by': workorder.created_by,
                     'created_at': workorder.created_at.isoformat() if workorder.created_at else None,
                     'updated_at': workorder.updated_at.isoformat() if workorder.updated_at else None,
-                    'resolved_at': workorder.resolved_at.isoformat() if workorder.resolved_at else None
+                    'date_of_close': workorder.date_of_close.isoformat() if workorder.date_of_close else None
                 })
             
             # 计算分页信息
@@ -168,7 +165,7 @@ def create_workorder():
     """创建工单"""
     try:
         data = request.get_json()
-        result = get_assistant().create_work_order(
+        result = service_manager.get_assistant().create_work_order(
             title=data['title'],
             description=data['description'],
             category=data['category'],
@@ -304,7 +301,7 @@ def generate_workorder_ai_suggestion(workorder_id):
             # 调用知识库搜索与LLM生成
             # 使用问题描述（title）而不是处理过程（description）作为主要查询依据
             query = f"{w.title}"
-            kb_results = get_assistant().search_knowledge(query, top_k=3)
+            kb_results = service_manager.get_assistant().search_knowledge(query, top_k=3)
             kb_list = kb_results.get('results', []) if isinstance(kb_results, dict) else []
             # 组装提示词
             context = "\n".join([f"Q: {k.get('question','')}\nA: {k.get('answer','')}" for k in kb_list])