优化: 前后端字段对齐、AI分析JSON解析修复、AutoMigrate

- 修复登录参数 username→account
- 修复前后端字段名不匹配 (ticketno/contactname/createtime等)
- 修复AI分析GLM返回markdown包裹和priority类型问题
- 添加AutoMigrate自动建表
- 统一API路由为 /api/auth/ 前缀
- 添加config.example.yaml，.gitignore排除config.yaml

frontend/src/store/user.ts

@@ -19,7 +19,7 @@ export const useUserStore = defineStore('user', () => {
   async function login(account: string, password: string) {
     const res = await loginApi({ account, password })
     setToken(res.token)
-    setUsername(account)
+    setUsername(res.user.username)
   }
 
   async function logout() {

frontend/src/views/ticket/create.vue

@@ -61,8 +61,7 @@ const form = reactive({
   content: '',
   contactname: '',
   contactphone: '',
-  source: 'web',
-  submitterid: 1
+  source: 'web'
 })
 
 const loading = ref(false)

frontend/src/views/ticket/detail.vue

@@ -166,8 +166,9 @@ async function fetchDetail() {
 
     // Try to fetch AI analysis
     try {
-      const analysisData = await getAnalysis(ticketId) as any
-      if (analysisData && analysisData.category) {
+      const analysisArr = await getAnalysis(ticketId) as any
+      if (analysisArr && analysisArr.length > 0) {
+        const analysisData = analysisArr[0]
         analysis.value = analysisData
         analysisForm.category = analysisData.category
         analysisForm.priority = analysisData.priority