🚚 Refactor(ratio_setting): refactor ratio management into standalone ratio_setting package

Summary
• Migrated all ratio-related sources into `setting/ratio_setting/`
  – `model_ratio.go` (renamed from model-ratio.go)
  – `cache_ratio.go`
  – `group_ratio.go`
• Changed package name to `ratio_setting` and relocated initialization (`ratio_setting.InitRatioSettings()` in main).
• Updated every import & call site:
  – Model / cache / completion / image ratio helpers
  – Group ratio helpers (`GetGroupRatio*`, `ContainsGroupRatio`, `CheckGroupRatio`, etc.)
  – JSON-serialization & update helpers (`*Ratio2JSONString`, `Update*RatioByJSONString`)
• Adjusted controllers, middleware, relay helpers, services and models to reference the new package.
• Removed obsolete `setting` / `operation_setting` imports; added missing `ratio_setting` imports.
• Adopted idiomatic map iteration (`for key := range m`) where value is unused.
• Ran static checks to ensure clean build.

This commit centralises all ratio configuration (model, cache and group) in one cohesive module, simplifying future maintenance and improving code clarity.

controller/group.go

@@ -4,13 +4,14 @@ import (
 	"net/http"
 	"one-api/model"
 	"one-api/setting"
+	"one-api/setting/ratio_setting"
 
 	"github.com/gin-gonic/gin"
 )
 
 func GetGroups(c *gin.Context) {
 	groupNames := make([]string, 0)
-	for groupName, _ := range setting.GetGroupRatioCopy() {
+	for groupName := range ratio_setting.GetGroupRatioCopy() {
 		groupNames = append(groupNames, groupName)
 	}
 	c.JSON(http.StatusOK, gin.H{
@@ -25,7 +26,7 @@ func GetUserGroups(c *gin.Context) {
 	userGroup := ""
 	userId := c.GetInt("id")
 	userGroup, _ = model.GetUserGroup(userId, false)
-	for groupName, ratio := range setting.GetGroupRatioCopy() {
+	for groupName, ratio := range ratio_setting.GetGroupRatioCopy() {
 		// UserUsableGroups contains the groups that the user can use
 		userUsableGroups := setting.GetUserUsableGroups(userGroup)
 		if desc, ok := userUsableGroups[groupName]; ok {

controller/option.go

@@ -7,6 +7,7 @@ import (
 	"one-api/model"
 	"one-api/setting"
 	"one-api/setting/console_setting"
+	"one-api/setting/ratio_setting"
 	"one-api/setting/system_setting"
 	"strings"
 
@@ -103,7 +104,7 @@ func UpdateOption(c *gin.Context) {
 			return
 		}
 	case "GroupRatio":
-		err = setting.CheckGroupRatio(option.Value)
+		err = ratio_setting.CheckGroupRatio(option.Value)
 		if err != nil {
 			c.JSON(http.StatusOK, gin.H{
 				"success": false,

controller/pricing.go

@@ -3,7 +3,7 @@ package controller
 import (
 	"one-api/model"
 	"one-api/setting"
-	"one-api/setting/operation_setting"
+	"one-api/setting/ratio_setting"
 
 	"github.com/gin-gonic/gin"
 )
@@ -13,7 +13,7 @@ func GetPricing(c *gin.Context) {
 	userId, exists := c.Get("id")
 	usableGroup := map[string]string{}
 	groupRatio := map[string]float64{}
-	for s, f := range setting.GetGroupRatioCopy() {
+	for s, f := range ratio_setting.GetGroupRatioCopy() {
 		groupRatio[s] = f
 	}
 	var group string
@@ -22,7 +22,7 @@ func GetPricing(c *gin.Context) {
 		if err == nil {
 			group = user.Group
 			for g := range groupRatio {
-				ratio, ok := setting.GetGroupGroupRatio(group, g)
+				ratio, ok := ratio_setting.GetGroupGroupRatio(group, g)
 				if ok {
 					groupRatio[g] = ratio
 				}
@@ -32,7 +32,7 @@ func GetPricing(c *gin.Context) {
 
 	usableGroup = setting.GetUserUsableGroups(group)
 	// check groupRatio contains usableGroup
-	for group := range setting.GetGroupRatioCopy() {
+	for group := range ratio_setting.GetGroupRatioCopy() {
 		if _, ok := usableGroup[group]; !ok {
 			delete(groupRatio, group)
 		}
@@ -47,7 +47,7 @@ func GetPricing(c *gin.Context) {
 }
 
 func ResetModelRatio(c *gin.Context) {
-	defaultStr := operation_setting.DefaultModelRatio2JSONString()
+	defaultStr := ratio_setting.DefaultModelRatio2JSONString()
 	err := model.UpdateOption("ModelRatio", defaultStr)
 	if err != nil {
 		c.JSON(200, gin.H{
@@ -56,7 +56,7 @@ func ResetModelRatio(c *gin.Context) {
 		})
 		return
 	}
-	err = operation_setting.UpdateModelRatioByJSONString(defaultStr)
+	err = ratio_setting.UpdateModelRatioByJSONString(defaultStr)
 	if err != nil {
 		c.JSON(200, gin.H{
 			"success": false,