feat: add cloudinary image upload to project forms, fix project details gallery styling, add gallery preview to project list

app/api/upload/route.ts

@@ -0,0 +1,32 @@
+import { NextRequest, NextResponse } from 'next/server'
+import cloudinary from '@/lib/cloudinary'
+
+export async function POST(request: NextRequest) {
+  try {
+    const formData = await request.formData()
+    const file = formData.get('file') as File
+
+    if (!file) {
+      return NextResponse.json({ error: 'Dosya bulunamadı.' }, { status: 400 })
+    }
+
+    // Convert file to buffer
+    const arrayBuffer = await file.arrayBuffer()
+    const buffer = Buffer.from(arrayBuffer)
+    const base64 = `data:${file.type};base64,${buffer.toString('base64')}`
+
+    // Upload to Cloudinary
+    const result = await cloudinary.uploader.upload(base64, {
+      folder: 'ayristech/projects',
+      transformation: [
+        { width: 1200, crop: 'limit' },
+        { quality: 'auto', fetch_format: 'auto' }
+      ]
+    })
+
+    return NextResponse.json({ url: result.secure_url })
+  } catch (error) {
+    console.error('Upload error:', error)
+    return NextResponse.json({ error: 'Yükleme başarısız oldu.' }, { status: 500 })
+  }
+}