管理后台 server 使用蓝图模式，降低维护成本，降低修改功能时对其他模块的影响

admin/dashboard/blueprints/robot.py

@@ -1,4 +1,4 @@
-from flask import Blueprint, render_template, jsonify, request
+from flask import Blueprint, render_template, jsonify, request, current_app
 from .auth import login_required
 import logging
 from robot_cmd.robot_command import GroupBotManager, Feature, PermissionStatus
@@ -19,7 +19,7 @@ def robot_management():
 @login_required
 def api_robot_groups():
     try:
-        server = robot_bp.server
+        server = current_app.dashboard_server
         # 获取所有群组列表
         groups = GroupBotManager.get_group_list()
 
@@ -90,7 +90,7 @@ def api_robot_group_permissions(group_id):
 @login_required
 def api_update_robot_permissions(group_id):
     # 更新群组功能权限
-    server = robot_bp.server
+    server = current_app.dashboard_server
     data = request.json
     feature_id = data.get('feature_id')
     status = data.get('status')
@@ -142,7 +142,7 @@ def api_robot_batch_operation():
 @login_required
 def api_add_group():
     try:
-        server = robot_bp.server
+        server = current_app.dashboard_server
         data = request.json
         group_id = data.get('group_id')
 
@@ -183,7 +183,7 @@ def api_add_group():
 @login_required
 def api_group_message_trend(group_id):
     try:
-        server = robot_bp.server
+        server = current_app.dashboard_server
         days = request.args.get('days', 7, type=int)
         trend_data = server.message_storage.get_message_trend(group_id, days)