feat: design system overhaul — sidebar, AI chats, settings, brainstorm, color cleanup

- Sidebar: dynamic brand-accent colors, brainstorm section restyled
- AI chat general: popup panel with expand/collapse, hides when contextual AI open
- AI chat contextual: tabs reordered (Actions first), X close button, height fix
- Settings: all tabs restyled, 6 new color presets (sage, terracotta, iron, etc.)
- Global color cleanup: emerald/orange hardcoded → brand-accent dynamic
- Brainstorm page: orange → brand-accent throughout
- PageEntry animation component added to key pages
- Floating AI button: bg-brand-accent instead of hardcoded black
- i18n: all 15 locales updated with new AI/billing keys
- Billing: freemium quota tracking, BYOK, stripe subscription scaffolding
- Admin: integrated into new design
- AGENTS.md + CLAUDE.md project rules added

memento-note/tests/migration/rollback.test.ts

@@ -10,6 +10,7 @@ import {
   createTestPrismaClient,
   initializeTestDatabase,
   cleanupTestDatabase,
+  ensureTestUser,
   createSampleNotes,
   createSampleAINotes,
   verifyTableExists,
@@ -22,6 +23,8 @@ describe('Rollback Tests', () => {
   beforeAll(async () => {
     prisma = createTestPrismaClient()
     await initializeTestDatabase(prisma)
+    // Create fixture users required by FK constraints on Note
+    await ensureTestUser(prisma, 'test-user-id')
   })
 
   afterAll(async () => {
@@ -217,6 +220,10 @@ describe('Rollback Tests', () => {
   })
 
   describe('Rollback Safety Checks', () => {
+    beforeEach(async () => {
+      await prisma.note.deleteMany({})
+    })
+
     test('should verify data before attempting rollback', async () => {
       await createSampleNotes(prisma, 10)
 
@@ -259,6 +266,11 @@ describe('Rollback Tests', () => {
   })
 
   describe('Rollback with Data', () => {
+    beforeEach(async () => {
+      await prisma.aiFeedback.deleteMany({})
+      await prisma.note.deleteMany({})
+    })
+
     test('should preserve essential note data', async () => {
       const notes = await createSampleAINotes(prisma, 20)
 
@@ -272,21 +284,15 @@ describe('Rollback Tests', () => {
     })
 
     test('should handle rollback with complex data structures', async () => {
-      // With PostgreSQL + Prisma Json type, data is stored as native JSONB
       const complexNote = await prisma.note.create({
         data: {
           title: 'Complex Note',
           content: '**Markdown** content with [links](https://example.com)',
-          checkItems: [
+          checkItems: JSON.stringify([
             { text: 'Task 1', done: false },
             { text: 'Task 2', done: true },
             { text: 'Task 3', done: false }
-          ],
-          images: [
-            { url: 'image1.jpg', caption: 'Caption 1' },
-            { url: 'image2.jpg', caption: 'Caption 2' }
-          ],
-          labels: ['label1', 'label2', 'label3'],
+          ]),
           userId: 'test-user-id'
         }
       })
@@ -297,12 +303,9 @@ describe('Rollback Tests', () => {
 
       expect(retrieved?.content).toContain('**Markdown**')
       expect(retrieved?.checkItems).toBeDefined()
-      expect(retrieved?.images).toBeDefined()
-      expect(retrieved?.labels).toBeDefined()
 
-      // Json fields come back already parsed
       if (retrieved?.checkItems) {
-        const checkItems = retrieved.checkItems as any[]
+        const checkItems = JSON.parse(retrieved.checkItems as string) as any[]
         expect(checkItems.length).toBe(3)
       }
     })