feat: Move notification settings to user profile and add i18n support

- Move notification config from system settings (.env) to user profile (database)
- Add user-specific notification settings API endpoints (GET/PUT /api/user/notification-settings)
- Add notification_settings column to qd_users table
- Update portfolio and trading-assistant to use profile notification settings
- Add notification settings UI in profile page with all channels (browser, telegram, email, phone, discord, webhook)
- Add i18n translations for notification settings in 10 languages
- Fix timestamp parsing in TradingRecords and portfolio (handle both ISO strings and Unix timestamps)
- Fix header icons alignment for mobile responsive layout
- Fix equity curve timestamp bug (handle datetime objects properly)
- Remove unused login.js exports and clean up user.js store
- Remove husky, commitlint and other dev dependencies
- Clean up env.example by removing user-specific notification params
- Update signal_notifier to prioritize user-specific tokens over global env vars

quantdinger_vue/src/components/NoticeIcon/NoticeIcon.vue

@@ -399,15 +399,23 @@ export default {
 </script>
 
 <style lang="less" scoped>
+@import '~ant-design-vue/es/style/themes/default.less';
+
 .notice-icon-wrapper {
   display: inline-block;
+  vertical-align: top;
 }
 
 .header-notice {
-  display: inline-block;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  height: @layout-header-height;
+  line-height: @layout-header-height;
   transition: all 0.3s;
   cursor: pointer;
   padding: 0 12px;
+  vertical-align: top;
 
   &:hover {
     background: rgba(0, 0, 0, 0.04);
@@ -418,6 +426,13 @@ export default {
   }
 }
 
+/* 手机端适配 */
+@media (max-width: 768px) {
+  .header-notice {
+    padding: 0 8px;
+  }
+}
+
 .notice-header {
   display: flex;
   justify-content: space-between;