refactor: 移除佣金比例字段，将developer统一为admin

backend/internal/router/agent/agent.go

@@ -80,7 +80,6 @@ func handleGetApps(c *gin.Context) {
 				"description":   aa.Application.Description,
 				"status":        aa.Application.Status,
 				"authorized_at": aa.CreatedAt,
-				"commission":    aa.Commission,
 			})
 		}
 	}
@@ -224,7 +223,6 @@ func handleGetFinance(c *gin.Context) {
 
 	response.Success(c, gin.H{
 		"balance":  user.Balance,
-		"commission": user.Commission,
 		"records":  records,
 	})
 }
@@ -244,7 +242,6 @@ func handleGetProfile(c *gin.Context) {
 		"email":           user.Email,
 		"avatar":          user.Avatar,
 		"balance":         user.Balance,
-		"commission":      user.Commission,
 		"can_create_agent": user.CanCreateAgent,
 	})
 }