实现@提及功能，允许用户在阅读页中高亮并点击提及的用户，触发添加好友流程。更新内容解析逻辑以支持提及格式，调整页面展示以适应新功能，并优化样式以提升用户体验。

soul-api/internal/handler/user.go

@@ -166,6 +166,11 @@ func UserCheckPurchased(c *gin.Context) {
 		c.JSON(http.StatusNotFound, gin.H{"success": false, "error": "用户不存在"})
 		return
 	}
+	// 超级VIP（管理端开通）：is_vip=1 且 vip_expire_date>NOW 时，所有文章阅读免费，无需再查订单
+	if user.IsVip != nil && *user.IsVip && user.VipExpireDate != nil && user.VipExpireDate.After(time.Now()) {
+		c.JSON(http.StatusOK, gin.H{"success": true, "data": gin.H{"isPurchased": true, "reason": "has_vip"}})
+		return
+	}
 	hasFullBook := user.HasFullBook != nil && *user.HasFullBook
 	if hasFullBook {
 		c.JSON(http.StatusOK, gin.H{"success": true, "data": gin.H{"isPurchased": true, "reason": "has_full_book"}})
@@ -377,8 +382,13 @@ func UserPurchaseStatus(c *gin.Context) {
 	if user.PendingEarnings != nil {
 		pendingEarnings = *user.PendingEarnings
 	}
+	// 超级VIP（管理端开通）：与 check-purchased 一致，视为全章可读
+	hasFullBook := user.HasFullBook != nil && *user.HasFullBook
+	if !hasFullBook && user.IsVip != nil && *user.IsVip && user.VipExpireDate != nil && user.VipExpireDate.After(time.Now()) {
+		hasFullBook = true
+	}
 	c.JSON(http.StatusOK, gin.H{"success": true, "data": gin.H{
-		"hasFullBook":       user.HasFullBook != nil && *user.HasFullBook,
+		"hasFullBook":       hasFullBook,
 		"purchasedSections": purchasedSections,
 		"sectionMidMap":     sectionMidMap,
 		"purchasedCount":    len(purchasedSections),