Major rework: multi-user accounts (register/login, per-user data isolation), new layout with sidebar/dashboard/profile menu, matrix phase view with collapsible category columns, life timeline with ages per phase, live budget capping, collapsible transitions, mobile support

src/app/api/plans/route.ts

@@ -2,13 +2,18 @@ import { NextRequest, NextResponse } from "next/server";
 import { z } from "zod";
 import { prisma } from "@/lib/db";
 import { getHouseholdOrNull } from "@/lib/queries";
+import { getCurrentUserId } from "@/lib/session";
 
 const createPlanSchema = z.object({
   name: z.string().min(1).max(120),
 });
 
 export async function GET() {
-  const household = await getHouseholdOrNull();
+  const userId = await getCurrentUserId();
+  if (!userId) {
+    return NextResponse.json({ error: "Nicht authentifiziert." }, { status: 401 });
+  }
+  const household = await getHouseholdOrNull(userId);
   if (!household) {
     return NextResponse.json({ plans: [] });
   }
@@ -31,7 +36,11 @@ export async function GET() {
 }
 
 export async function POST(request: NextRequest) {
-  const household = await getHouseholdOrNull();
+  const userId = await getCurrentUserId();
+  if (!userId) {
+    return NextResponse.json({ error: "Nicht authentifiziert." }, { status: 401 });
+  }
+  const household = await getHouseholdOrNull(userId);
   if (!household) {
     return NextResponse.json(
       { error: "Bitte zuerst das Grundprofil (Onboarding) anlegen." },