refactor: 文件行数超标拆解（7个文件→14个文件，全部≤200行）

- 移动本地接口定义到 interfaces.go 和 admin/interfaces.go
- favorite_controller.go → favorite_item_controller.go
- space_controller.go → space_loaders.go
- settings_controller.go → settings_api_audit.go
- admin_energy_controller.go → admin_energy_api_controller.go
- admin_post_controller.go → admin_post_action_controller.go
- comment_repo.go → comment_mention_repo.go
- post_repo.go → post_stats_repo.go

internal/controller/admin/admin_energy_api_controller.go

@@ -0,0 +1,140 @@
+package admin
+
+import (
+	"net/http"
+	"strconv"
+
+	"metazone.cc/metalab/internal/common"
+	"metazone.cc/metalab/internal/model"
+
+	"github.com/gin-gonic/gin"
+)
+
+// AdjustEnergy 调整用户域能
+func (ac *AdminEnergyController) AdjustEnergy(c *gin.Context) {
+	operatorUID, ok := c.Get("uid")
+	if !ok {
+		common.Error(c, http.StatusUnauthorized, "请先登录")
+		return
+	}
+
+	var req struct {
+		UserIDs     []uint `json:"user_ids" binding:"required,min=1"`
+		Amount      int    `json:"amount" binding:"required"`
+		Description string `json:"description" binding:"required,min=1,max=500"`
+		Mode        string `json:"mode"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		common.Error(c, http.StatusBadRequest, "参数错误：需要 user_ids、amount 和 description")
+		return
+	}
+
+	// 默认模式为 admin_transfer
+	if req.Mode == "" {
+		req.Mode = model.FundTypeAdminTransfer
+	}
+
+	// system_operation 仅 owner 可用
+	if req.Mode == model.FundTypeSystemOperation {
+		role, _ := c.Get("role")
+		if !model.HasMinRole(role.(string), model.RoleOwner) {
+			common.Error(c, http.StatusForbidden, "仅站长可使用系统操作模式")
+			return
+		}
+	}
+
+	if err := ac.energySvc.AdminAdjust(operatorUID.(uint), req.UserIDs, req.Amount, req.Description, req.Mode); err != nil {
+		if err == common.ErrInsufficientFund {
+			common.Error(c, http.StatusBadRequest, "公户余额不足，无法执行操作")
+			return
+		}
+		common.Error(c, http.StatusInternalServerError, "调整失败")
+		return
+	}
+
+	common.OkMessage(c, "域能调整成功")
+}
+
+// ListEnergyLogs 查询域能日志
+func (ac *AdminEnergyController) ListEnergyLogs(c *gin.Context) {
+	energyType := c.Query("type")
+	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
+	pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "20"))
+
+	logs, total, err := ac.energySvc.GetAdminEnergyLogs(energyType, page, pageSize)
+	if err != nil {
+		common.Error(c, http.StatusInternalServerError, "查询失败")
+		return
+	}
+
+	// 转换为展示友好的视图
+	type logView struct {
+		model.EnergyLog
+		EnergyDisplay float64 `json:"energy_display"`
+		TypeName      string  `json:"type_name"`
+	}
+	views := make([]logView, len(logs))
+	for i, l := range logs {
+		views[i] = logView{
+			EnergyLog:     l,
+			EnergyDisplay: float64(l.Amount) / 10,
+			TypeName:      model.EnergyLogDisplayNames[l.Type],
+		}
+	}
+
+	common.Ok(c, gin.H{
+		"items":       views,
+		"total":       total,
+		"page":        page,
+		"page_size":   pageSize,
+		"total_pages": common.PageCount(total, pageSize),
+	})
+}
+
+// GetFundBalance 获取公户余额
+func (ac *AdminEnergyController) GetFundBalance(c *gin.Context) {
+	balance, err := ac.energySvc.GetFundBalance()
+	if err != nil {
+		common.Error(c, http.StatusInternalServerError, "查询失败")
+		return
+	}
+	common.Ok(c, gin.H{
+		"balance":        balance,
+		"balance_display": float64(balance) / 10,
+	})
+}
+
+// ListFundLogs 查询公户流水
+func (ac *AdminEnergyController) ListFundLogs(c *gin.Context) {
+	logType := c.Query("type")
+	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
+	pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "20"))
+
+	logs, total, err := ac.energySvc.GetFundLogs(logType, page, pageSize)
+	if err != nil {
+		common.Error(c, http.StatusInternalServerError, "查询失败")
+		return
+	}
+
+	type logView struct {
+		model.FundLog
+		AmountDisplay float64 `json:"amount_display"`
+		TypeName      string  `json:"type_name"`
+	}
+	views := make([]logView, len(logs))
+	for i, l := range logs {
+		views[i] = logView{
+			FundLog:       l,
+			AmountDisplay: float64(l.Amount) / 10,
+			TypeName:      model.FundLogDisplayNames[l.Type],
+		}
+	}
+
+	common.Ok(c, gin.H{
+		"items":       views,
+		"total":       total,
+		"page":        page,
+		"page_size":   pageSize,
+		"total_pages": common.PageCount(total, pageSize),
+	})
+}