Add Anthropic API integration, remove locale settings UI

Anthropic API:
- Add @anthropic-ai/sdk with adapter wrapping OpenAI-shaped interface
- Support Claude models (opus, sonnet, haiku) with extended thinking
- Auto-reset model on provider switch, JSON retry logic
- Add Claude model pricing to ai-usage tracker
- Update AI settings form with Anthropic provider option
- Add provider field to AIUsageLog for cross-provider cost tracking

Locale Settings Removal:
- Strip Localization tab from admin settings (mobile + desktop)
- Remove i18n settings from router and feature flags
- Remove LOCALIZATION from SettingCategory enum
- Keep franc document language detection intact

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/server/routers/settings.ts

@@ -17,6 +17,11 @@ function categorizeModel(modelId: string): string {
   if (id.startsWith('gpt-4')) return 'gpt-4'
   if (id.startsWith('gpt-3.5')) return 'gpt-3.5'
   if (id.startsWith('o1') || id.startsWith('o3') || id.startsWith('o4')) return 'reasoning'
+  // Anthropic Claude models
+  if (id.startsWith('claude-opus-4-5') || id.startsWith('claude-sonnet-4-5')) return 'claude-4.5'
+  if (id.startsWith('claude-opus-4') || id.startsWith('claude-sonnet-4')) return 'claude-4'
+  if (id.startsWith('claude-haiku') || id.startsWith('claude-3')) return 'claude-3.5'
+  if (id.startsWith('claude')) return 'claude-4'
   return 'other'
 }
 
@@ -26,16 +31,10 @@ export const settingsRouter = router({
    * These are non-sensitive settings that can be exposed to any user
    */
   getFeatureFlags: protectedProcedure.query(async ({ ctx }) => {
-    const [whatsappEnabled, defaultLocale, availableLocales, juryCompareEnabled] = await Promise.all([
+    const [whatsappEnabled, juryCompareEnabled] = await Promise.all([
       ctx.prisma.systemSettings.findUnique({
         where: { key: 'whatsapp_enabled' },
       }),
-      ctx.prisma.systemSettings.findUnique({
-        where: { key: 'i18n_default_locale' },
-      }),
-      ctx.prisma.systemSettings.findUnique({
-        where: { key: 'i18n_available_locales' },
-      }),
       ctx.prisma.systemSettings.findUnique({
         where: { key: 'jury_compare_enabled' },
       }),
@@ -43,8 +42,6 @@ export const settingsRouter = router({
 
     return {
       whatsappEnabled: whatsappEnabled?.value === 'true',
-      defaultLocale: defaultLocale?.value || 'en',
-      availableLocales: availableLocales?.value ? JSON.parse(availableLocales.value) : ['en', 'fr'],
       juryCompareEnabled: juryCompareEnabled?.value === 'true',
     }
   }),
@@ -171,14 +168,13 @@ export const settingsRouter = router({
     )
     .mutation(async ({ ctx, input }) => {
       // Infer category from key prefix if not provided
-      const inferCategory = (key: string): 'AI' | 'BRANDING' | 'EMAIL' | 'STORAGE' | 'SECURITY' | 'DEFAULTS' | 'WHATSAPP' | 'LOCALIZATION' => {
-        if (key.startsWith('openai') || key.startsWith('ai_')) return 'AI'
+      const inferCategory = (key: string): 'AI' | 'BRANDING' | 'EMAIL' | 'STORAGE' | 'SECURITY' | 'DEFAULTS' | 'WHATSAPP' => {
+        if (key.startsWith('openai') || key.startsWith('ai_') || key.startsWith('anthropic')) return 'AI'
         if (key.startsWith('smtp_') || key.startsWith('email_')) return 'EMAIL'
         if (key.startsWith('storage_') || key.startsWith('local_storage') || key.startsWith('max_file') || key.startsWith('avatar_') || key.startsWith('allowed_file')) return 'STORAGE'
         if (key.startsWith('brand_') || key.startsWith('logo_') || key.startsWith('primary_') || key.startsWith('theme_')) return 'BRANDING'
         if (key.startsWith('whatsapp_')) return 'WHATSAPP'
         if (key.startsWith('security_') || key.startsWith('session_')) return 'SECURITY'
-        if (key.startsWith('i18n_') || key.startsWith('locale_')) return 'LOCALIZATION'
         return 'DEFAULTS'
       }
 
@@ -206,7 +202,7 @@ export const settingsRouter = router({
       }
 
       // Reset OpenAI client if API key, base URL, model, or provider changed
-      if (input.settings.some((s) => s.key === 'openai_api_key' || s.key === 'openai_base_url' || s.key === 'ai_model' || s.key === 'ai_provider')) {
+      if (input.settings.some((s) => s.key === 'openai_api_key' || s.key === 'anthropic_api_key' || s.key === 'openai_base_url' || s.key === 'ai_model' || s.key === 'ai_provider')) {
         const { resetOpenAIClient } = await import('@/lib/openai')
         resetOpenAIClient()
       }
@@ -276,9 +272,9 @@ export const settingsRouter = router({
       category: categorizeModel(model),
     }))
 
-    // Sort: GPT-5+ first, then GPT-4o, then other GPT-4, then GPT-3.5, then reasoning models
+    // Sort by category priority
     const sorted = categorizedModels.sort((a, b) => {
-      const order = ['gpt-5+', 'gpt-4o', 'gpt-4', 'gpt-3.5', 'reasoning', 'other']
+      const order = ['claude-4.5', 'claude-4', 'claude-3.5', 'gpt-5+', 'gpt-4o', 'gpt-4', 'gpt-3.5', 'reasoning', 'other']
       const aOrder = order.findIndex(cat => a.category === cat)
       const bOrder = order.findIndex(cat => b.category === cat)
       if (aOrder !== bOrder) return aOrder - bOrder
@@ -740,62 +736,4 @@ export const settingsRouter = router({
       return results
     }),
 
-  /**
-   * Get localization settings
-   */
-  getLocalizationSettings: adminProcedure.query(async ({ ctx }) => {
-    const settings = await ctx.prisma.systemSettings.findMany({
-      where: { category: 'LOCALIZATION' },
-      orderBy: { key: 'asc' },
-    })
-
-    return settings
-  }),
-
-  /**
-   * Update localization settings
-   */
-  updateLocalizationSettings: superAdminProcedure
-    .input(
-      z.object({
-        settings: z.array(
-          z.object({
-            key: z.string(),
-            value: z.string(),
-          })
-        ),
-      })
-    )
-    .mutation(async ({ ctx, input }) => {
-      const results = await Promise.all(
-        input.settings.map((s) =>
-          ctx.prisma.systemSettings.upsert({
-            where: { key: s.key },
-            update: { value: s.value, updatedBy: ctx.user.id },
-            create: {
-              key: s.key,
-              value: s.value,
-              category: 'LOCALIZATION',
-              updatedBy: ctx.user.id,
-            },
-          })
-        )
-      )
-
-      try {
-        await logAudit({
-          prisma: ctx.prisma,
-          userId: ctx.user.id,
-          action: 'UPDATE_LOCALIZATION_SETTINGS',
-          entityType: 'SystemSettings',
-          detailsJson: { keys: input.settings.map((s) => s.key) },
-          ipAddress: ctx.ip,
-          userAgent: ctx.userAgent,
-        })
-      } catch {
-        // Never throw on audit failure
-      }
-
-      return results
-    }),
 })