fix(settings): reading undefined caused crash (#8901)

* fix(settings): 修复OpenAI推理条件中provider未定义的判断问题

修复useProvider钩子中provider可能为undefined时的模型获取逻辑

* feat(provider): 添加供应商不存在时的默认回退逻辑

当供应商不存在时，自动回退到默认供应商并显示警告信息

* feat(i18n): 添加缺失供应商的警告信息翻译

* fix(SettingsTab): 移除对provider的冗余检查

src/renderer/src/hooks/useProvider.ts

@@ -1,5 +1,6 @@
 import { createSelector } from '@reduxjs/toolkit'
 import { isSystemProvider } from '@renderer/config/providers'
+import { getDefaultProvider } from '@renderer/services/AssistantService'
 import { useAppDispatch, useAppSelector } from '@renderer/store'
 import {
   addModel,
@@ -11,6 +12,8 @@ import {
   updateProviders
 } from '@renderer/store/llm'
 import { Assistant, Model, Provider } from '@renderer/types'
+import { getFancyProviderName } from '@renderer/utils'
+import { useTranslation } from 'react-i18next'
 
 import { useDefaultModel } from './useAssistant'
 
@@ -45,12 +48,18 @@ export function useAllProviders() {
 }
 
 export function useProvider(id: string) {
-  const provider = useAppSelector((state) => state.llm.providers.find((p) => p.id === id) as Provider)
+  let provider = useAppSelector((state) => state.llm.providers.find((p) => p.id === id))
   const dispatch = useAppDispatch()
+  const { t } = useTranslation()
+
+  if (!provider) {
+    provider = getDefaultProvider()
+    window.message.warning(t('warning.missing_provider', { provider: getFancyProviderName(provider) }))
+  }
 
   return {
     provider,
-    models: provider?.models || [],
+    models: provider?.models ?? [],
     updateProvider: (updates: Partial<Provider>) => dispatch(updateProvider({ id, ...updates })),
     addModel: (model: Model) => dispatch(addModel({ providerId: id, model })),
     removeModel: (model: Model) => dispatch(removeModel({ providerId: id, model })),

src/renderer/src/i18n/locales/en-us.json

@@ -3565,6 +3565,9 @@
     "noReleaseNotes": "No release notes",
     "title": "Update"
   },
+  "warning": {
+    "missing_provider": "The supplier does not exist; reverted to the default supplier {{provider}}. This may cause issues."
+  },
   "words": {
     "knowledgeGraph": "Knowledge Graph",
     "quit": "Quit",

src/renderer/src/i18n/locales/ja-jp.json

@@ -3565,6 +3565,9 @@
     "noReleaseNotes": "暫無更新日誌",
     "title": "更新"
   },
+  "warning": {
+    "missing_provider": "サプライヤーが存在しないため、デフォルトのサプライヤー {{provider}} にロールバックされました。これにより問題が発生する可能性があります。"
+  },
   "words": {
     "knowledgeGraph": "ナレッジグラフ",
     "quit": "終了",

src/renderer/src/i18n/locales/ru-ru.json

@@ -3565,6 +3565,9 @@
     "noReleaseNotes": "Нет заметок об обновлении",
     "title": "Обновление"
   },
+  "warning": {
+    "missing_provider": "Поставщик не существует, возвращение к поставщику по умолчанию {{provider}}. Это может привести к проблемам."
+  },
   "words": {
     "knowledgeGraph": "Граф знаний",
     "quit": "Выйти",

src/renderer/src/i18n/locales/zh-cn.json

@@ -3565,6 +3565,9 @@
     "noReleaseNotes": "暂无更新日志",
     "title": "更新提示"
   },
+  "warning": {
+    "missing_provider": "供应商不存在，已回退到默认供应商 {{provider}}。这可能导致问题。"
+  },
   "words": {
     "knowledgeGraph": "知识图谱",
     "quit": "退出",

src/renderer/src/i18n/locales/zh-tw.json

@@ -3565,6 +3565,9 @@
     "noReleaseNotes": "暫無更新日誌",
     "title": "更新提示"
   },
+  "warning": {
+    "missing_provider": "供應商不存在，已回退到預設供應商 {{provider}}。這可能導致問題。"
+  },
   "words": {
     "knowledgeGraph": "知識圖譜",
     "quit": "結束",