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/lib/queries.ts

@@ -96,6 +96,22 @@ export function toPlanInput(plan: PlanWithRelations): PlanInput {
   };
 }
 
-export async function getHouseholdOrNull(): Promise<HouseholdWithPersons | null> {
-  return prisma.household.findFirst({ include: { persons: true } });
+// Liefert den Haushalt des eingeloggten Benutzers (pro Konto genau einer).
+export async function getHouseholdOrNull(userId: string): Promise<HouseholdWithPersons | null> {
+  return prisma.household.findFirst({ where: { userId }, include: { persons: true } });
+}
+
+// Laedt einen Plan inkl. aller Phasen, aber nur wenn er dem Benutzer gehoert.
+export async function getOwnedPlan(planId: string, userId: string) {
+  return prisma.plan.findFirst({
+    where: { id: planId, household: { userId } },
+    include: planInclude,
+  });
+}
+
+// Laedt eine Phase (Basisdaten), aber nur wenn sie dem Benutzer gehoert.
+export async function getOwnedPhase(phaseId: string, userId: string) {
+  return prisma.phase.findFirst({
+    where: { id: phaseId, plan: { household: { userId } } },
+  });
 }