fix: 域能系统全量检查 — 修复 5 个逻辑/交互 Gap

- 修复 Admin 改名路径未扣域能（非审核路径补充 HasCompletedTask + DeductOnRename）
- 赋能按钮改为 Modal 弹窗（轻赋/重赋选择 + 每日上限提示）
- EnergyInfo API 增加 daily_energize_exp/daily_exp_cap_reached 返回值
- "我的域能" TAB 增加经验值和等级展示
- Energize 事务修复：导出 EnergyStore + WithTx 方法确保 DB 操作原子性
- Studio 写文章页新增 LV0 锁止横幅 + 禁用提交按钮

internal/controller/energy_controller.go

@@ -78,16 +78,19 @@ func (ec *EnergyController) GetEnergyInfo(c *gin.Context) {
 		return
 	}
 
-	energy, err := ec.energySvc.GetEnergyInfo(uid)
+	info, err := ec.energySvc.GetEnergyInfo(uid)
 	if err != nil {
 		common.Error(c, http.StatusInternalServerError, "获取域能信息失败")
 		return
 	}
 
-	energyDisplay := float64(energy) / 10
+	energyDisplay := float64(info.Energy) / 10
 	common.Ok(c, gin.H{
-		"energy":         energy,
-		"energy_display": energyDisplay,
+		"energy":                info.Energy,
+		"energy_display":        energyDisplay,
+		"daily_energize_exp":    info.DailyEnergizeExp,
+		"daily_exp_cap":         info.DailyExpCap,
+		"daily_exp_cap_reached": info.DailyExpCapReached,
 	})
 }
 

internal/controller/interfaces.go

@@ -72,7 +72,7 @@ type levelUseCase interface {
 // energyUseCase EnergyController 对 EnergyService 的最小依赖（ISP：3 个方法）
 type energyUseCase interface {
 	Energize(energizerID uint, postID uint, amount int) (int, error)
-	GetEnergyInfo(userID uint) (int, error)
+	GetEnergyInfo(userID uint) (*service.EnergyInfo, error)
 	GetEnergyLogs(userID uint, days, page, pageSize int) ([]model.EnergyLog, int64, error)
 }
 

internal/controller/settings_api_profile.go

@@ -69,6 +69,29 @@ func (sc *SettingsController) UpdateProfile(c *gin.Context) {
 	}
 
 	// 管理员及以上直接更新
+	// 先获取当前用户信息，判断是否改名
+	currentUser, err := sc.authService.GetProfile(userID)
+	if err != nil {
+		common.Error(c, http.StatusInternalServerError, "操作失败")
+		return
+	}
+
+	// 改名：首次免费，非首次扣 6 域能
+	if req.Username != "" && req.Username != currentUser.Username && sc.energySvc != nil {
+		hasCompleted, _ := sc.levelSvc.HasCompletedTask(userID, "username")
+		if hasCompleted {
+			if err := sc.energySvc.DeductOnRename(userID); err != nil {
+				switch err {
+				case common.ErrInsufficientEnergy:
+					common.Error(c, http.StatusBadRequest, "域能不足，无法改名。可通过每日签到或创作被赋能获取")
+				default:
+					common.Error(c, http.StatusInternalServerError, "操作失败")
+				}
+				return
+			}
+		}
+	}
+
 	if err := sc.authService.UpdateProfile(userID, req.Username, req.Bio); err != nil {
 		handleSettingsError(c, err)
 		return