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/app/(main)/settings/profile/page.tsx

@@ -2,8 +2,6 @@ import { auth } from '@/auth'
 import { redirect } from 'next/navigation'
 import { ProfileForm } from './profile-form'
 import prisma from '@/lib/prisma'
-import { ProfilePageHeader } from '@/components/profile-page-header'
-import { AISettingsLinkCard } from './ai-settings-link-card'
 
 export default async function ProfilePage() {
   const session = await auth()
@@ -12,33 +10,18 @@ export default async function ProfilePage() {
     redirect('/login')
   }
 
-  // Parallel queries
-  const [user, aiSettings] = await Promise.all([
-    prisma.user.findUnique({
-      where: { id: session.user.id },
-      select: { name: true, email: true, role: true }
-    }),
-    prisma.userAISettings.findUnique({
-      where: { userId: session.user.id }
-    })
-  ])
+  const user = await prisma.user.findUnique({
+    where: { id: session.user.id },
+    select: { name: true, email: true, role: true, image: true }
+  })
 
   if (!user) {
     redirect('/login')
   }
 
-  const userAISettings = {
-    preferredLanguage: aiSettings?.preferredLanguage || 'auto',
-    showRecentNotes: aiSettings?.showRecentNotes ?? false
-  }
-
   return (
     <div className="max-w-2xl">
-      <ProfilePageHeader />
-      <ProfileForm user={user} userAISettings={userAISettings} />
-
-      {/* AI Settings Link */}
-      <AISettingsLinkCard />
+      <ProfileForm user={user} />
     </div>
   )
 }