chore(addon/aikefu): 增加静态图像资源，方便展示

src/addon/aikefu/shop/view/kefu/message.html

@@ -137,7 +137,7 @@
     }
     
     .message-item.user .message-role {
-        color: rgba(255, 255, 255, 0.9);
+        color: rgba(106, 38, 38, 0.9);
         text-align: right;
     }
     
@@ -350,9 +350,9 @@
                         var html = '';
                         if (list.length > 0) {
                             list.forEach(function(item) {
-                                var role = item.role === 'user' ? '用户' : '机器人';
+                                var role = item.role === 'user' ? (item.user_id ? '用户-' + item.user_id : '用户') : '机器人';
                                 var roleClass = item.role === 'user' ? 'user' : 'assistant';
-                                var avatar = item.role === 'user' ? '/__STATIC__/admin/img/user.png' : '/__STATIC__/admin/img/robot.png';
+                                var avatar = item.role === 'user' ? '/addon/aikefu/static/images/user.svg' : '/addon/aikefu/static/images/robot.svg';
                                 
                                 html += '<div class="message-item ' + roleClass + '">';
                                 if (item.role === 'assistant') {

src/addon/aikefu/static/images/robot.svg

@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="40" height="40" viewBox="0 0 40 40">
+  <rect x="5" y="10" width="30" height="20" rx="5" fill="#7C7C7C"/>
+  <circle cx="15" cy="20" r="3" fill="#FFFFFF"/>
+  <circle cx="25" cy="20" r="3" fill="#FFFFFF"/>
+  <path d="M15 30 L25 30" stroke="#FFFFFF" stroke-width="3"/>
+  <rect x="15" y="10" width="10" height="5" fill="#5C5C5C"/>
+</svg>

src/addon/aikefu/static/images/user.svg

@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="40" height="40" viewBox="0 0 40 40">
+  <circle cx="20" cy="15" r="10" fill="#4A90E2"/>
+  <path d="M30 35c0-5-4-9-9-9s-9 4-9 9" fill="#4A90E2"/>
+</svg>