fix api config auth and image model compatibility

src/app/api/user-preference/route.ts

@@ -3,6 +3,7 @@ import { prisma } from '@/lib/prisma'
 import { requireUserAuth, isErrorResponse } from '@/lib/api-auth'
 import { ApiError, apiHandler } from '@/lib/api-errors'
 import { isArtStyleValue } from '@/lib/constants'
+import { assertPersistedUser } from '@/lib/persisted-user'
 
 function validateArtStyleField(value: unknown): string {
   if (typeof value !== 'string') {
@@ -29,6 +30,7 @@ export const GET = apiHandler(async () => {
   const authResult = await requireUserAuth()
   if (isErrorResponse(authResult)) return authResult
   const { session } = authResult
+  await assertPersistedUser(session.user.id)
 
   // 获取或创建用户偏好
   const preference = await prisma.userPreference.upsert({
@@ -46,6 +48,7 @@ export const PATCH = apiHandler(async (request: NextRequest) => {
   const authResult = await requireUserAuth()
   if (isErrorResponse(authResult)) return authResult
   const { session } = authResult
+  await assertPersistedUser(session.user.id)
 
   const body = await request.json()
 

src/app/api/user/api-config/route.ts

@@ -10,6 +10,7 @@ import { prisma } from '@/lib/prisma'
 import { encryptApiKey, decryptApiKey } from '@/lib/crypto-utils'
 import { requireUserAuth, isErrorResponse } from '@/lib/api-auth'
 import { apiHandler, ApiError } from '@/lib/api-errors'
+import { assertPersistedUser } from '@/lib/persisted-user'
 import {
   composeModelKey,
   parseModelKeyStrict,
@@ -1654,6 +1655,7 @@ export const GET = apiHandler(async () => {
   if (isErrorResponse(authResult)) return authResult
   const { session } = authResult
   const userId = session.user.id
+  await assertPersistedUser(userId)
 
   const pref = await prisma.userPreference.findUnique({
     where: { userId },
@@ -1766,6 +1768,7 @@ export const PUT = apiHandler(async (request: NextRequest) => {
   if (isErrorResponse(authResult)) return authResult
   const { session } = authResult
   const userId = session.user.id
+  await assertPersistedUser(userId)
 
   let body: ApiConfigPutBody
   try {

src/lib/generator-api.ts

@@ -23,6 +23,18 @@ import { generateSiliconFlowAudio, generateSiliconFlowImage, generateSiliconFlow
 
 const OFFICIAL_ONLY_PROVIDER_KEYS = new Set(['bailian', 'siliconflow'])
 
+const OPENAI_COMPAT_IMAGE_MODEL_ID_ALIASES: Record<string, string> = {
+    'gemini-3-pro-image': 'gemini-3-pro-image-preview',
+    'gemini-3.1-flash-image': 'gemini-3.1-flash-image-preview',
+    'gemini-2.5-flash-image': 'gemini-2.5-flash-image-preview',
+}
+
+function normalizeOpenAICompatImageModelId(modelId: string): string {
+    const normalized = modelId.trim()
+    if (!normalized) return normalized
+    return OPENAI_COMPAT_IMAGE_MODEL_ID_ALIASES[normalized] || normalized
+}
+
 /**
  * 将 aspectRatio 映射为 OpenAI 兼容的 size
  */
@@ -105,6 +117,7 @@ export async function generateImage(
     const { referenceImages, ...generatorOptions } = options || {}
     if (gatewayRoute === 'openai-compat') {
         const compatTemplate = selection.compatMediaTemplate
+        const normalizedCompatModelId = normalizeOpenAICompatImageModelId(selection.modelId)
         if (providerKey === 'openai-compatible' && !compatTemplate) {
             throw new Error(`MODEL_COMPAT_MEDIA_TEMPLATE_REQUIRED: ${selection.modelKey}`)
         }
@@ -112,7 +125,7 @@ export async function generateImage(
             return await generateImageViaOpenAICompatTemplate({
                 userId,
                 providerId: selection.provider,
-                modelId: selection.modelId,
+                modelId: normalizedCompatModelId,
                 modelKey: selection.modelKey,
                 prompt,
                 referenceImages,
@@ -141,7 +154,7 @@ export async function generateImage(
         return await generateImageViaOpenAICompat({
             userId,
             providerId: selection.provider,
-            modelId: selection.modelId,
+            modelId: normalizedCompatModelId,
             prompt,
             referenceImages,
             options: {

src/lib/persisted-user.ts

@@ -0,0 +1,31 @@
+import { ApiError } from '@/lib/api-errors'
+import { prisma } from '@/lib/prisma'
+import { withPrismaRetry } from '@/lib/prisma-retry'
+
+const SESSION_USER_MISSING_MESSAGE = '登录状态已失效，请重新登录'
+
+export async function assertPersistedUser(userId: string): Promise<void> {
+  const normalizedUserId = typeof userId === 'string' ? userId.trim() : ''
+  if (!normalizedUserId) {
+    throw new ApiError('UNAUTHORIZED', {
+      code: 'SESSION_USER_MISSING',
+      field: 'userId',
+      message: SESSION_USER_MISSING_MESSAGE,
+    })
+  }
+
+  const user = await withPrismaRetry(() =>
+    prisma.user.findUnique({
+      where: { id: normalizedUserId },
+      select: { id: true },
+    }),
+  )
+
+  if (user) return
+
+  throw new ApiError('UNAUTHORIZED', {
+    code: 'SESSION_USER_MISSING',
+    field: 'userId',
+    message: SESSION_USER_MISSING_MESSAGE,
+  })
+}