feat: dark cinematic hero + public memory write section

- HeroSection: animated warmgold/burgundy/indigo orbs on #060304 bg, film grain CSS overlay, larger glowing typography
- WriteSection: new public component – collapsible form (name optional, title, textarea) posts to /api/memories without auth, shows success state and refreshes page
- API: remove isAdmin() guard from POST /api/memories, accept author field
- DB: migration adds author TEXT column to memories (try/catch for existing DBs)
- Types: add author: string | null to Memory type
- MemorySection: display "— [Name]" beneath date when author is set
- globals.css: grain keyframe animation for film-texture overlay

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/app/api/memories/route.ts

@@ -20,11 +20,7 @@ export async function GET() {
 }
 
 export async function POST(req: NextRequest) {
-  if (!isAdmin()) {
-    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 })
-  }
-
-  const { title, content } = await req.json()
+  const { title, content, author } = await req.json()
   if (!title?.trim() || !content?.trim()) {
     return NextResponse.json(
       { error: 'Titel und Inhalt sind erforderlich' },
@@ -34,8 +30,8 @@ export async function POST(req: NextRequest) {
 
   const db = getDb()
   const result = db
-    .prepare('INSERT INTO memories (title, content) VALUES (?, ?)')
-    .run(title.trim(), content.trim())
+    .prepare('INSERT INTO memories (title, content, author) VALUES (?, ?, ?)')
+    .run(title.trim(), content.trim(), author?.trim() || null)
   const memory = db
     .prepare('SELECT * FROM memories WHERE id = ?')
     .get(result.lastInsertRowid)

src/app/globals.css

@@ -19,6 +19,27 @@
 }
 
 @layer utilities {
+  /* Film grain overlay */
+  .grain-overlay {
+    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
+    background-size: 200px 200px;
+    animation: grain 0.8s steps(1) infinite;
+  }
+
+  @keyframes grain {
+    0%  { background-position: 0 0; }
+    10% { background-position: -50px -30px; }
+    20% { background-position: 30px -60px; }
+    30% { background-position: -70px 20px; }
+    40% { background-position: 60px -10px; }
+    50% { background-position: -20px 50px; }
+    60% { background-position: 40px 30px; }
+    70% { background-position: -60px -40px; }
+    80% { background-position: 20px 60px; }
+    90% { background-position: -40px -20px; }
+    100% { background-position: 0 0; }
+  }
+
   /* Custom scrollbar */
   ::-webkit-scrollbar {
     width: 5px;

src/app/page.tsx

@@ -4,6 +4,7 @@ import HeroSection from '@/components/HeroSection'
 import PhotoSlideshow from '@/components/PhotoSlideshow'
 import PhotoGallery from '@/components/PhotoGallery'
 import MemorySection from '@/components/MemorySection'
+import WriteSection from '@/components/WriteSection'
 import MusicPlayer from '@/components/MusicPlayer'
 import VideoGallery from '@/components/VideoGallery'
 
@@ -81,6 +82,9 @@ export default async function HomePage() {
         </section>
       )}
 
+      {/* Write section – public */}
+      <WriteSection />
+
       {/* Memories */}
       <MemorySection memories={memories} />