feat: add MiniMax-M3 to provider model list

- Add MiniMax-M3 to the MiniMax provider description across i18n locales
- Remove deprecated MiniMax-M2.5 reference
- Retain MiniMax-M2.7 and MiniMax-M2.7-highspeed as supported models

MiniMax-M3 is the latest flagship model from MiniMax with extended context
and stronger reasoning capabilities. Users can now see it in the provider
selection UI when configuring a new Minimax model.

frontend/src/i18n/locales/en-US.ts

@@ -3116,7 +3116,7 @@ export default {
         },
         minimax: {
           label: 'MiniMax',
-          description: 'MiniMax-M2.7, MiniMax-M2.7-highspeed, MiniMax-M2.5, etc.',
+          description: 'MiniMax-M3, MiniMax-M2.7, MiniMax-M2.7-highspeed, etc.',
         },
         mimo: {
           label: 'MiMo',

frontend/src/i18n/locales/ko-KR.ts

@@ -2352,7 +2352,7 @@ export default {
         },
         minimax: {
           label: "MiniMax",
-          description: "MiniMax-M2.7, MiniMax-M2.7-highspeed, MiniMax-M2.5 등",
+          description: "MiniMax-M3, MiniMax-M2.7, MiniMax-M2.7-highspeed 등",
         },
         mimo: {
           label: "MiMo",

frontend/src/i18n/locales/ru-RU.ts

@@ -2068,7 +2068,7 @@ export default {
         },
         minimax: {
           label: 'MiniMax',
-          description: 'MiniMax-M2.7, MiniMax-M2.7-highspeed, MiniMax-M2.5, etc.'
+          description: 'MiniMax-M3, MiniMax-M2.7, MiniMax-M2.7-highspeed, etc.'
         },
         mimo: {
           label: 'MiMo',

frontend/src/i18n/locales/zh-CN.ts

@@ -2333,7 +2333,7 @@ export default {
         },
         minimax: {
           label: "MiniMax",
-          description: "MiniMax-M2.7, MiniMax-M2.7-highspeed, MiniMax-M2.5 等",
+          description: "MiniMax-M3, MiniMax-M2.7, MiniMax-M2.7-highspeed 等",
         },
         mimo: {
           label: "小米 MiMo",

internal/models/provider/minimax.go

@@ -25,7 +25,7 @@ func (p *MiniMaxProvider) Info() ProviderInfo {
 	return ProviderInfo{
 		Name:        ProviderMiniMax,
 		DisplayName: "MiniMax",
-		Description: "MiniMax-M2.7, MiniMax-M2.7-highspeed, MiniMax-M2.5, etc.",
+		Description: "MiniMax-M3, MiniMax-M2.7, MiniMax-M2.7-highspeed, etc.",
 		DefaultURLs: map[types.ModelType]string{
 			types.ModelTypeKnowledgeQA: MiniMaxCNBaseURL,
 		},