Production deployment setup + feature complete

- Dockerfile + deploy.sh for Hetzner server
- Email verification via Better Auth + Resend
- Invite code flow (6-digit OTP, generate/join)
- Settlement share percent fix (payer vs debtor)
- OCR scanner fixes (date display, retry, viewfinder)
- app.json icon/splash/adaptive-icon configured
- iOS deployment target 15.5 (ML Kit requirement)
- DB migration 0014: household_invitations table

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/native/src/hooks/useMonthStatus.ts

@@ -0,0 +1,50 @@
+import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
+import { apiRequest } from "../lib/api-client";
+import { useAuthStore } from "../stores/auth.store";
+
+export type MonthStatus = {
+  id: string;
+  householdId: string;
+  month: string;
+  status: "open" | "closed";
+  closedAt: string | null;
+  closedBy: string | null;
+  finalAmount: number | null;
+  notes: string | null;
+  finalTransferId: string | null;
+  createdAt: string;
+};
+
+export function useMonthStatus(month: string) {
+  const activeHouseholdId = useAuthStore((s) => s.activeHouseholdId);
+  return useQuery({
+    queryKey: ["month-status", activeHouseholdId, month],
+    queryFn: () =>
+      apiRequest<{ status: MonthStatus }>(`/api/months/${month}/status`),
+    select: (data) => data.status,
+    enabled: !!activeHouseholdId,
+  });
+}
+
+export type CloseMonthInput = {
+  finalAmount: number;
+  toUserId: string;
+  notes?: string;
+};
+
+export function useCloseMonth(month: string) {
+  const queryClient = useQueryClient();
+  const activeHouseholdId = useAuthStore((s) => s.activeHouseholdId);
+  return useMutation({
+    mutationFn: (input: CloseMonthInput) =>
+      apiRequest<{ status: MonthStatus }>(`/api/months/${month}/close`, {
+        method: "POST",
+        body: JSON.stringify(input),
+      }),
+    onSuccess: () => {
+      void queryClient.invalidateQueries({ queryKey: ["month-status", activeHouseholdId, month] });
+      void queryClient.invalidateQueries({ queryKey: ["settlement-v2", activeHouseholdId, month] });
+      void queryClient.invalidateQueries({ queryKey: ["transactions", activeHouseholdId] });
+    },
+  });
+}