feat: add plan title field with data migration

app/[lang]/dashboard/[planId]/page.tsx

@@ -60,7 +60,7 @@ export default async function DashboardPage({
                                 />
                             </div>
                             <div>
-                                <h1 className="text-2xl font-bold">{dict.home.title}</h1>
+                                <h1 className="text-2xl font-bold">{plan.title}</h1>
                                 <p className="text-muted-foreground text-sm">
                                     {plan.startDate.toLocaleDateString(lang)} - {plan.endDate.toLocaleDateString(lang)}
                                 </p>

app/api/plan/route.ts

@@ -4,14 +4,15 @@ import prisma from '@/lib/prisma';
 export async function POST(req: Request) {
     try {
         const body = await req.json();
-        const { startDate, endDate, password, instructions } = body;
+        const { title, startDate, endDate, password, instructions } = body;
 
-        if (!startDate || !endDate || !password) {
+        if (!title || !startDate || !endDate || !password) {
             return NextResponse.json({ error: 'Missing required fields' }, { status: 400 });
         }
 
         const plan = await prisma.plan.create({
             data: {
+                title,
                 startDate: new Date(startDate),
                 endDate: new Date(endDate),
                 password,