feat: 优化飞书集成、知识库、Agent、工单管理及AI建议功能，统一前端对话字体样式并移除工单模板文件。

src/knowledge_base/knowledge_manager.py

@@ -401,27 +401,35 @@ class KnowledgeManager:
         """获取知识库统计信息"""
         try:
             with db_manager.get_session() as session:
-                total_entries = session.query(KnowledgeEntry).count()
-                active_entries = session.query(KnowledgeEntry).filter(
+                # 只统计活跃（未删除）的条目
+                total_entries = session.query(KnowledgeEntry).filter(
                     KnowledgeEntry.is_active == True
                 ).count()
 
-                # 按类别统计
+                # 统计已验证的条目
+                verified_entries = session.query(KnowledgeEntry).filter(
+                    KnowledgeEntry.is_active == True,
+                    KnowledgeEntry.is_verified == True
+                ).count()
+
+                # 按类别统计（仅限活跃条目）
                 category_stats = session.query(
                     KnowledgeEntry.category,
-                    session.query(KnowledgeEntry).filter(
-                        KnowledgeEntry.category == KnowledgeEntry.category
-                    ).count()
+                    func.count(KnowledgeEntry.id)
+                ).filter(
+                    KnowledgeEntry.is_active == True
                 ).group_by(KnowledgeEntry.category).all()
 
-                # 平均置信度
+                # 平均置信度（仅限活跃条目）
                 avg_confidence = session.query(
                     func.avg(KnowledgeEntry.confidence_score)
+                ).filter(
+                    KnowledgeEntry.is_active == True
                 ).scalar() or 0.0
 
                 return {
                     "total_entries": total_entries,
-                    "active_entries": active_entries,
+                    "active_entries": verified_entries, # 将 active_entries 复用为已验证数量，或前端相应修改
                     "category_distribution": dict(category_stats),
                     "average_confidence": float(avg_confidence)
                 }