更新小程序，新增VIP会员状态管理功能，优化章节解锁逻辑，支持VIP用户访问增值内容。调整用户详情页面，增加VIP相关字段和功能，提升用户体验。更新会议记录，反映最新讨论内容。

soul-api/internal/handler/user.go

@@ -171,18 +171,43 @@ func UserCheckPurchased(c *gin.Context) {
 		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"}})
-		return
-	}
 	if type_ == "fullbook" {
+		// 9.9 买断：永久权益，写入 users.has_full_book；兜底再查订单
+		if user.HasFullBook != nil && *user.HasFullBook {
+			c.JSON(http.StatusOK, gin.H{"success": true, "data": gin.H{"isPurchased": true, "reason": "has_full_book"}})
+			return
+		}
 		var count int64
 		db.Model(&model.Order{}).Where("user_id = ? AND product_type = ? AND status = ?", userId, "fullbook", "paid").Count(&count)
 		c.JSON(http.StatusOK, gin.H{"success": true, "data": gin.H{"isPurchased": count > 0, "reason": map[bool]string{true: "fullbook_order_exists"}[count > 0]}})
 		return
 	}
 	if type_ == "section" && productId != "" {
+		// 章节：需要区分普通版/增值版
+		var ch model.Chapter
+		// 不加载 content，避免大字段
+		_ = db.Select("id", "is_free", "price", "edition_standard", "edition_premium").Where("id = ?", productId).First(&ch).Error
+
+		// 免费章节：直接可读
+		if ch.ID != "" {
+			if (ch.IsFree != nil && *ch.IsFree) || (ch.Price != nil && *ch.Price == 0) {
+				c.JSON(http.StatusOK, gin.H{"success": true, "data": gin.H{"isPurchased": true, "reason": "free_section"}})
+				return
+			}
+		}
+
+		isPremium := ch.ID != "" && ch.EditionPremium != nil && *ch.EditionPremium
+		// 默认普通版：未明确标记增值版时，按普通版处理
+		isStandard := !isPremium
+
+		// 普通版：买断可读；增值版：买断不包含
+		if isStandard {
+			if user.HasFullBook != nil && *user.HasFullBook {
+				c.JSON(http.StatusOK, gin.H{"success": true, "data": gin.H{"isPurchased": true, "reason": "has_full_book"}})
+				return
+			}
+		}
+
 		var count int64
 		db.Model(&model.Order{}).Where("user_id = ? AND product_type = ? AND product_id = ? AND status = ?", userId, "section", productId, "paid").Count(&count)
 		c.JSON(http.StatusOK, gin.H{"success": true, "data": gin.H{"isPurchased": count > 0, "reason": map[bool]string{true: "section_order_exists"}[count > 0]}})
@@ -382,11 +407,8 @@ 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
+	// 9.9 买断：仅表示“普通版买断”，不等同 VIP（增值版仍需 VIP 或单章购买）
 	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":       hasFullBook,
 		"purchasedSections": purchasedSections,