perf: memo GridCard, fuse save fns, fix slash tab active color

memento-note/tests/unit/byok-factory.test.ts

@@ -3,7 +3,8 @@ import { applyByokToConfig } from '@/lib/byok';
 
 vi.mock('@/lib/prisma', () => ({
   prisma: {
-    userAPIKey: { findFirst: vi.fn() },
+    userAPIKey: { findFirst: vi.fn(), update: vi.fn().mockResolvedValue({}) },
+    subscription: { findUnique: vi.fn() },
   },
 }));
 
@@ -13,11 +14,22 @@ vi.mock('@/lib/crypto', () => ({
   hashApiKey: vi.fn(() => 'hash'),
 }));
 
+vi.mock('@/lib/entitlements', () => ({
+  getUserInfo: vi.fn(async () => ({ tier: 'PRO', status: 'ACTIVE' })),
+}));
+
 import { prisma } from '@/lib/prisma';
 
 describe('applyByokToConfig', () => {
   beforeEach(() => {
     vi.clearAllMocks();
+    vi.mocked(prisma.subscription.findUnique).mockResolvedValue({
+      userId: 'u1',
+      tier: 'PRO',
+      status: 'ACTIVE',
+      currentPeriodStart: new Date(),
+      currentPeriodEnd: new Date(),
+    } as any);
   });
 
   it('injects user API key into config when active row exists', async () => {