feat: 帖子全局/板块置顶支持权重排序，优化列表与详情渲染

handler/api.go

@@ -244,11 +244,11 @@ func (h *Handlers) APIAdminCommentsLockPost(c *gin.Context) {
 	c.JSON(http.StatusOK, gin.H{"message": msg, "comments_locked": req.Locked})
 }
 
-// APIAdminPinPost 全局置顶/取消全局置顶（JSON）
+// APIAdminPinPost 全局置顶/取消全局置顶（JSON），支持设置置顶顺序数值
 func (h *Handlers) APIAdminPinPost(c *gin.Context) {
 	id, _ := strconv.ParseUint(c.Param("id"), 10, 64)
 	var req struct {
-		Pinned bool `json:"pinned"`
+		Pinned int `json:"pinned"`
 	}
 	if err := c.ShouldBindJSON(&req); err != nil {
 		c.JSON(http.StatusBadRequest, gin.H{"error": "参数错误"})
@@ -259,17 +259,17 @@ func (h *Handlers) APIAdminPinPost(c *gin.Context) {
 		return
 	}
 	msg := "已取消全局置顶"
-	if req.Pinned {
+	if req.Pinned > 0 {
 		msg = "已全局置顶"
 	}
 	c.JSON(http.StatusOK, gin.H{"message": msg, "pinned": req.Pinned})
 }
 
-// APIAdminBoardPinPost 板块内置顶/取消板块内置顶（JSON）
+// APIAdminBoardPinPost 板块内置顶/取消板块内置顶（JSON），支持设置置顶顺序数值
 func (h *Handlers) APIAdminBoardPinPost(c *gin.Context) {
 	id, _ := strconv.ParseUint(c.Param("id"), 10, 64)
 	var req struct {
-		BoardPinned bool `json:"board_pinned"`
+		BoardPinned int `json:"board_pinned"`
 	}
 	if err := c.ShouldBindJSON(&req); err != nil {
 		c.JSON(http.StatusBadRequest, gin.H{"error": "参数错误"})
@@ -280,7 +280,7 @@ func (h *Handlers) APIAdminBoardPinPost(c *gin.Context) {
 		return
 	}
 	msg := "已取消板块置顶"
-	if req.BoardPinned {
+	if req.BoardPinned > 0 {
 		msg = "已板块置顶"
 	}
 	c.JSON(http.StatusOK, gin.H{"message": msg, "board_pinned": req.BoardPinned})

handler/ssr_home.go

@@ -673,10 +673,10 @@ func writeSSRPostRow(
 	}
 
 	b.WriteString(`<div class="post-title-row">`)
-	if post.Pinned {
+	if post.Pinned > 0 {
 		b.WriteString(`<span class="post-pin-badge" title="全局置顶">全局置顶</span>`)
 	}
-	if post.BoardPinned {
+	if post.BoardPinned > 0 {
 		b.WriteString(`<span class="post-pin-badge post-pin-badge--board" title="板块置顶">板块置顶</span>`)
 	}
 	if post.Featured {