fix(ui): thème, textes et lisibilité restants de la revue

Les boutons suivent la couleur d’apparence, les libellés trop petits ou trop techniques sont clarifiés, et le catalogue des fournisseurs se met à jour tout seul.

Co-authored-by: Cursor <cursoragent@cursor.com>

memento-note/app/api/billing/status/route.ts

@@ -5,6 +5,7 @@ import { stripe } from '@/lib/stripe';
 import { getDynamicPrices, isBillingEnabled } from '@/lib/billing/stripe-prices';
 import { syncSubscriptionFromStripe } from '@/lib/billing/sync-subscription-from-stripe';
 import { shouldOfferSubscriptionTrial, SUBSCRIPTION_TRIAL_DAYS } from '@/lib/billing/trial';
+import { periodsDiffer, rollBillingPeriod } from '@/lib/billing/period';
 
 export const dynamic = 'force-dynamic';
 
@@ -41,9 +42,37 @@ export async function GET(req: NextRequest) {
     }
   }
   try {
+    let subscription = await prisma.subscription.findUnique({ where: { userId } });
+    const stripeSecret = process.env.STRIPE_SECRET_KEY;
+    const canTalkToStripe = !!stripeSecret && stripeSecret !== 'sk_test_placeholder';
+
+    if (
+      subscription?.stripeSubscriptionId
+      && !subscription.stripeSubscriptionId.startsWith('sub_mock')
+      && canTalkToStripe
+    ) {
+      try {
+        const live = await stripe.subscriptions.retrieve(subscription.stripeSubscriptionId);
+        await syncSubscriptionFromStripe(live, userId);
+        subscription = await prisma.subscription.findUnique({ where: { userId } });
+      } catch (syncErr) {
+        console.error('[billing/status] live Stripe period sync failed:', syncErr);
+      }
+    } else if (subscription && !subscription.cancelAtPeriodEnd) {
+      const rolled = rollBillingPeriod(subscription.currentPeriodStart);
+      if (periodsDiffer(rolled, subscription)) {
+        subscription = await prisma.subscription.update({
+          where: { userId },
+          data: {
+            currentPeriodStart: rolled.currentPeriodStart,
+            currentPeriodEnd: rolled.currentPeriodEnd,
+          },
+        });
+      }
+    }
+
     const { tier, status, currentPeriodEnd } = await getUserInfo(userId);
     const effectiveTier = await getEffectiveTier(userId);
-    const subscription = await prisma.subscription.findUnique({ where: { userId } });
     const prices = await getDynamicPrices();
     const billingEnabled = await isBillingEnabled();
     const { getPackPublicPrices } = await import('@/lib/billing/credit-packs');
@@ -89,8 +118,8 @@ export async function GET(req: NextRequest) {
       tier,
       effectiveTier,
       status,
-      currentPeriodEnd: currentPeriodEnd ?? null,
-      currentPeriodStart: subscription?.currentPeriodStart ?? null,
+      currentPeriodEnd: subscription?.currentPeriodEnd?.toISOString() ?? currentPeriodEnd?.toISOString() ?? null,
+      currentPeriodStart: subscription?.currentPeriodStart?.toISOString() ?? null,
       cancelAtPeriodEnd: subscription?.cancelAtPeriodEnd ?? false,
       hasStripeSubscription: !!subscription?.stripeSubscriptionId,
       trialEndsAt: subscription?.trialEndsAt?.toISOString() ?? null,