ajout plan byok, plus correction d'affichage et navigation

prisma/schema.prisma

@@ -40,6 +40,10 @@ model User {
   planId         String?  @default("free")
   subscriptionPlan Plan?  @relation(fields: [planId], references: [id])
   
+  // Bring Your Own Key
+  customApiProvider String?
+  customApiKey      String?
+  
   aiActionsUsed  Int      @default(0)
   dailyWordGoal  Int      @default(500)
   writingStreak  Int      @default(0)

prisma/seed.ts

@@ -1,8 +1,13 @@
 import { config } from 'dotenv';
-config({ path: '.env.local' });
-import getDB from '../src/lib/prisma';
+config();
+import { PrismaClient } from '@prisma/client';
+import { PrismaPg } from '@prisma/adapter-pg';
+import { Pool } from 'pg';
 
-const prisma = getDB();
+const connectionString = process.env.DATABASE_URL;
+const pool = new Pool({ connectionString });
+const adapter = new PrismaPg(pool);
+const prisma = new PrismaClient({ adapter });
 
 async function main() {
     console.log('Seeding plans...');
@@ -41,6 +46,17 @@ async function main() {
             features: ['250 actions IA / mois', 'Accès Gemini 3 Pro', 'Bible du monde avancée', 'Outils de révision avancés'],
             isPopular: false,
         },
+        {
+            id: 'byok',
+            name: 'byok',
+            displayName: 'Clé Perso (BYOK)',
+            price: 4.99,
+            description: 'Utilisez vos propres clés API (ChatGPT, Claude, Gemini).',
+            maxProjects: -1,
+            maxAiActions: -1,
+            features: ['Tokens illimités via votre clé', 'Mode Bring Your Own Key', 'Choix du modèle IA', 'Projets illimités'],
+            isPopular: false,
+        },
     ];
 
     for (const plan of plans) {