Add OpenAI base url override to app config

src/admin/AdminAppConfigurationClient.tsx

@@ -56,6 +56,7 @@ export default function AdminAppConfigurationClient({
   isMetaDescriptionConfigured,
   hasPageAbout,
   // AI
+  hasOpenaiBaseUrl,
   isAiTextGenerationEnabled,
   aiTextAutoGeneratedFields,
   hasAiTextAutoGeneratedFields,
@@ -422,6 +423,15 @@ export default function AdminAppConfigurationClient({
             on Vercel dashboard and connect to this project
             to enable rate limiting
           </ChecklistRow>
+          <ChecklistRow
+            title="Base URL override (experimental)"
+            status={hasOpenaiBaseUrl}
+            optional
+          >
+            Store base URL in environment variable to use
+            alternate OpenAI-compatible providers:
+            {renderEnvVars(['OPENAI_BASE_URL'])}
+          </ChecklistRow>
         </ChecklistGroup>
         <ChecklistGroup
           title="Performance"

src/app/config.ts

@@ -357,6 +357,7 @@ export const APP_CONFIGURATION = {
   isMetaDescriptionConfigured: IS_META_DESCRIPTION_CONFIGURED,
   hasPageAbout: Boolean(process.env.NEXT_PUBLIC_SITE_ABOUT),
   // AI
+  hasOpenaiBaseUrl: Boolean(OPENAI_BASE_URL),
   isAiTextGenerationEnabled: AI_TEXT_GENERATION_ENABLED,
   aiTextAutoGeneratedFields: process.env.AI_TEXT_AUTO_GENERATED_FIELDS
     ? AI_TEXT_AUTO_GENERATED_FIELDS.length === 0