refactor: Gitea 式目录改组，移除本分支 SPA 与杂项产物

将 model/service/handler/middleware 迁至 models/services/routers/api/modules/auth，并删除 frontend、embed_static、scripts 及误入库缓存/二进制。

Co-authored-by: Cursor <cursoragent@cursor.com>

routers/api/message.go

@@ -0,0 +1,170 @@
+package handler
+
+import (
+	"net/http"
+	"strconv"
+
+	"github.com/gin-gonic/gin"
+	"git.iioio.com/freefire/jiang13-forum/model"
+	"git.iioio.com/freefire/jiang13-forum/service"
+)
+
+// APIMessageConversations 会话列表（按对方聚合）
+func (h *Handlers) APIMessageConversations(c *gin.Context) {
+	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
+	size, _ := strconv.Atoi(c.DefaultQuery("size", "30"))
+	list, total, err := h.Message.ListConversations(service.ConversationListQuery{
+		UserID: h.currentUserID(c),
+		Page:   page,
+		Size:   size,
+	})
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{
+		"conversations": list,
+		"total":         total,
+		"page":          page,
+	})
+}
+
+// APIConversationMessages 某会话内消息
+func (h *Handlers) APIConversationMessages(c *gin.Context) {
+	peerID, err := strconv.ParseUint(c.Param("peerId"), 10, 64)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "无效的会话"})
+		return
+	}
+	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
+	size, _ := strconv.Atoi(c.DefaultQuery("size", "50"))
+	before, _ := strconv.ParseUint(c.DefaultQuery("before", "0"), 10, 64)
+	uid := h.currentUserID(c)
+
+	list, total, err := h.Message.ListConversationMessages(service.ConversationMessagesQuery{
+		UserID: uid,
+		PeerID: uint(peerID),
+		Page:   page,
+		Size:   size,
+		Before: uint(before),
+	})
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	// 首次打开（非向上翻页）时标已读
+	if before == 0 {
+		_ = h.Message.MarkConversationRead(uid, uint(peerID))
+		for i := range list {
+			if list[i].ToUserID == uid {
+				list[i].IsRead = true
+			}
+		}
+	}
+
+	var peer *model.User
+	if peerID > 0 {
+		var u model.User
+		if err := model.DB.First(&u, uint(peerID)).Error; err == nil {
+			peer = &u
+		}
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"messages":     list,
+		"total":        total,
+		"peer_user_id": uint(peerID),
+		"peer_user":    peer,
+		"is_system":    peerID == 0,
+	})
+}
+
+// APIMarkConversationRead 将会话标为已读
+func (h *Handlers) APIMarkConversationRead(c *gin.Context) {
+	peerID, err := strconv.ParseUint(c.Param("peerId"), 10, 64)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "无效的会话"})
+		return
+	}
+	if err := h.Message.MarkConversationRead(h.currentUserID(c), uint(peerID)); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{"message": "已标为已读"})
+}
+
+// APIMessageUnreadCount 未读私信数（含私信/通知分项）
+func (h *Handlers) APIMessageUnreadCount(c *gin.Context) {
+	total, dm, notify, err := h.Message.UnreadCounts(h.currentUserID(c))
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{
+		"count":        total,
+		"dm_count":     dm,
+		"notify_count": notify,
+	})
+}
+
+// APIMessageNotifications 系统通知列表
+func (h *Handlers) APIMessageNotifications(c *gin.Context) {
+	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
+	size, _ := strconv.Atoi(c.DefaultQuery("size", "30"))
+	kind := c.Query("kind")
+	uid := h.currentUserID(c)
+	list, total, err := h.Message.ListNotifications(uid, page, size, kind)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{
+		"notifications": list,
+		"total":         total,
+		"page":          page,
+		"kind":          kind,
+	})
+}
+
+// APIMarkNotificationsRead 系统通知全部已读
+func (h *Handlers) APIMarkNotificationsRead(c *gin.Context) {
+	if err := h.Message.MarkNotificationsRead(h.currentUserID(c)); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{"message": "通知已全部标为已读"})
+}
+
+// APISendMessage 发送私信
+func (h *Handlers) APISendMessage(c *gin.Context) {
+	var req struct {
+		ToUserID uint   `json:"to_user_id"`
+		Subject  string `json:"subject"`
+		Content  string `json:"content"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "参数错误"})
+		return
+	}
+	msg, err := h.Message.Send(service.MessageSendInput{
+		FromUserID: h.currentUserID(c),
+		ToUserID:   req.ToUserID,
+		Subject:    req.Subject,
+		Content:    req.Content,
+	})
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{"message": msg})
+}
+
+// APIMarkAllMessagesRead 全部已读
+func (h *Handlers) APIMarkAllMessagesRead(c *gin.Context) {
+	if err := h.Message.MarkAllRead(h.currentUserID(c)); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{"message": "已全部标为已读"})
+}