feat: enhance agent system with hot/quick questions, dynamic chat UI, and new enterprise agents

- Add hotQuestions and quickQuestions fields to agent model
- Update admin form with textarea inputs for hot/quick questions
- Make chat page display dynamic agent data (name, icon, questions)
- Widen center chat area to 60% for better readability
- Add enterprise service category and 3 new agents (jiaotou, promotion, group-policy)
- Update Prisma schema formatting and seed data

app/admin/agents/AgentForm.tsx

@@ -16,6 +16,8 @@ export default function AgentForm({
     icon?: string
     categoryId?: number
     features?: string
+    hotQuestions?: string
+    quickQuestions?: string
     status?: string
   }
 }) {
@@ -27,6 +29,8 @@ export default function AgentForm({
     icon: agent?.icon || "",
     categoryId: agent?.categoryId || "",
     features: agent?.features || "",
+    hotQuestions: agent?.hotQuestions ? JSON.parse(agent.hotQuestions).join('\n') : '',
+    quickQuestions: agent?.quickQuestions ? JSON.parse(agent.quickQuestions).join('\n') : '',
     status: agent?.status || "active",
   })
   const [loading, setLoading] = useState(false)
@@ -44,10 +48,16 @@ export default function AgentForm({
 
       const method = agent?.id ? "PUT" : "POST"
 
+      const body = {
+        ...formData,
+        hotQuestions: JSON.stringify(formData.hotQuestions.split('\n').filter(q => q.trim())),
+        quickQuestions: JSON.stringify(formData.quickQuestions.split('\n').filter(q => q.trim())),
+      }
+
       const res = await fetch(url, {
         method,
         headers: { "Content-Type": "application/json" },
-        body: JSON.stringify(formData),
+        body: JSON.stringify(body),
       })
 
       if (res.ok) {
@@ -175,6 +185,33 @@ export default function AgentForm({
         />
       </div>
 
+      <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
+        <div>
+          <label className="block text-sm font-medium text-gray-700 mb-2">
+            热点问题（每行一个）
+          </label>
+          <textarea
+            rows={5}
+            value={formData.hotQuestions}
+            onChange={(e) => setFormData({ ...formData, hotQuestions: e.target.value })}
+            className="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-blue-500"
+            placeholder="养老政策有哪些最新变化？&#10;如何申请养老服务补贴？&#10;老年人健康管理需要注意什么？&#10;养老机构如何选择？"
+          />
+        </div>
+        <div>
+          <label className="block text-sm font-medium text-gray-700 mb-2">
+            快捷提问（每行一个）
+          </label>
+          <textarea
+            rows={5}
+            value={formData.quickQuestions}
+            onChange={(e) => setFormData({ ...formData, quickQuestions: e.target.value })}
+            className="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-blue-500"
+            placeholder="养老政策咨询&#10;养老机构推荐&#10;养老服务申请"
+          />
+        </div>
+      </div>
+
       <div className="flex gap-4">
         <button
           type="submit"