feat: 添加内容置顶功能，更新相关数据模型和前端视图

backend/app/services/creator.go

@@ -3,6 +3,7 @@ package services
 import (
 	"context"
 	"errors"
+	"fmt"
 	"time"
 
 	"quyun/v2/app/errorx"
@@ -129,6 +130,7 @@ func (s *creator) ListContents(
 		}
 	}
 	if filter.Key != nil && *filter.Key != "" {
+		fmt.Printf("DEBUG: Filter Key: '%s'\n", *filter.Key)
 		q = q.Where(tbl.Key.Eq(*filter.Key))
 	}
 	if filter.Keyword != nil && *filter.Keyword != "" {
@@ -205,6 +207,7 @@ func (s *creator) ListContents(
 			VideoCount:  videoCount,
 			AudioCount:  audioCount,
 			Status:      string(item.Status),
+			IsPinned:    item.IsPinned,
 			IsPurchased: false,
 		})
 	}
@@ -311,11 +314,48 @@ func (s *creator) UpdateContent(
 		if form.Status != "" {
 			contentUpdates.Status = consts.ContentStatus(form.Status)
 		}
+
+		// Determine final status
+		finalStatus := c.Status
+		if form.Status != "" {
+			finalStatus = consts.ContentStatus(form.Status)
+		}
+
+		// Validation: Only published content can be pinned
+		if form.IsPinned != nil && *form.IsPinned && finalStatus != consts.ContentStatusPublished {
+			return errorx.ErrBadRequest.WithMsg("只有已发布的内容支持置顶")
+		}
+
+		// Perform standard updates
 		_, err = tx.Content.WithContext(ctx).Where(tx.Content.ID.Eq(cid)).Updates(contentUpdates)
 		if err != nil {
 			return err
 		}
 
+		// Handle IsPinned Logic
+		if finalStatus != consts.ContentStatusPublished {
+			// Force Unpin if not published
+			_, err = tx.Content.WithContext(ctx).Where(tx.Content.ID.Eq(cid)).UpdateSimple(tx.Content.IsPinned.Value(false))
+			if err != nil {
+				return err
+			}
+		} else if form.IsPinned != nil {
+			// Explicit Pin Update requested
+			_, err = tx.Content.WithContext(ctx).Where(tx.Content.ID.Eq(cid)).UpdateSimple(tx.Content.IsPinned.Value(*form.IsPinned))
+			if err != nil {
+				return err
+			}
+
+			// If setting to true, unpin others
+			if *form.IsPinned {
+				if _, err := tx.Content.WithContext(ctx).
+					Where(tx.Content.TenantID.Eq(tid), tx.Content.ID.Neq(cid)).
+					UpdateSimple(tx.Content.IsPinned.Value(false)); err != nil {
+					return err
+				}
+			}
+		}
+
 		// 3. Update Price
 		// Check if price exists
 		if form.Price != nil {