fix: persist saved client delivery choice

src/pages/ClientDeliveryPage.jsx

@@ -143,6 +143,9 @@ export const ClientDeliveryPage = () => {
 
   const effectiveSelectedSlot = selectedSlot || invitationSelectedSlot;
   const isChoiceSaved = choiceSaved || (!isActiveState && Boolean(invitationSelectedSlot));
+  const savedChoiceLabel = effectiveSelectedSlot
+    ? `${formatDeliveryDate(effectiveSelectedSlot.date)} / ${effectiveSelectedSlot.time}`
+    : "";
 
   const handleSaveChoice = React.useCallback(
     async () => {
@@ -236,6 +239,16 @@ export const ClientDeliveryPage = () => {
           </p>
         </Panel>
 
+        {isChoiceSaved && savedChoiceLabel ? (
+          <Panel className="space-y-2 p-5 sm:p-6">
+            <p className="text-sm uppercase tracking-[0.24em] text-[var(--color-text-muted)]">Ваш выбор</p>
+            <h2 className="text-xl font-semibold leading-tight">Сохранено: {savedChoiceLabel}</h2>
+            <p className="text-sm leading-6 text-[var(--color-text-muted)]">
+              При повторном открытии этой ссылки будет показан тот же выбор.
+            </p>
+          </Panel>
+        ) : null}
+
         {isActiveState && !isChoiceSaved && slots.length ? (
           <DeliverySlotsPicker
             slots={slots}

src/services/deliveryInvitationApi.js

@@ -3,6 +3,7 @@ import { supabase, hasSupabaseConfig } from "../supabaseClient";
 const SHOWCASE_TOKEN = "showcase";
 const LOCAL_CLIENT_FLOW_TOKEN_PREFIX = "client-flow-";
 const LOCAL_CLIENT_FLOW_TOKEN = "client-flow-1001";
+const LOCAL_INVITATION_STORAGE_PREFIX = "delivery-invitation:";
 
 const localDeliveryInvitationCache = new Map();
 
@@ -16,6 +17,43 @@ const addDays = (date, days) => {
 
 const cloneInvitation = (invitation) => JSON.parse(JSON.stringify(invitation));
 
+const getLocalStorage = () => {
+  try {
+    return globalThis.localStorage || null;
+  } catch (error) {
+    return null;
+  }
+};
+
+const getLocalStorageKey = (token) => `${LOCAL_INVITATION_STORAGE_PREFIX}${token}`;
+
+const readStoredInvitation = (token) => {
+  const storage = getLocalStorage();
+  if (!storage) {
+    return null;
+  }
+
+  try {
+    const raw = storage.getItem(getLocalStorageKey(token));
+    return raw ? JSON.parse(raw) : null;
+  } catch (error) {
+    return null;
+  }
+};
+
+const writeStoredInvitation = (invitation) => {
+  const storage = getLocalStorage();
+  if (!storage?.setItem) {
+    return;
+  }
+
+  try {
+    storage.setItem(getLocalStorageKey(invitation.token), JSON.stringify(invitation));
+  } catch (error) {
+    // Ignore storage quota and privacy mode failures.
+  }
+};
+
 const isLocalClientInvitationToken = (token) =>
   token === SHOWCASE_TOKEN || token?.startsWith(LOCAL_CLIENT_FLOW_TOKEN_PREFIX);
 
@@ -52,8 +90,14 @@ const getCachedInvitation = (token) => {
 };
 
 const cacheInvitation = (invitation) => {
-  localDeliveryInvitationCache.set(invitation.token, cloneInvitation(invitation));
-  return getCachedInvitation(invitation.token);
+  const clonedInvitation = cloneInvitation(invitation);
+  localDeliveryInvitationCache.set(clonedInvitation.token, clonedInvitation);
+
+  if (isLocalClientInvitationToken(clonedInvitation.token)) {
+    writeStoredInvitation(clonedInvitation);
+  }
+
+  return getCachedInvitation(clonedInvitation.token);
 };
 
 const buildFallbackInvitation = (token) =>
@@ -125,7 +169,10 @@ export const fetchDeliveryInvitation = async (token) => {
 
   if (isLocalClientInvitationToken(token)) {
     const cachedInvitation = getCachedInvitation(token);
-    const invitation = cachedInvitation ?? cacheInvitation(buildFallbackInvitation(token));
+    const storedInvitation = cachedInvitation ?? readStoredInvitation(token);
+    const invitation = storedInvitation
+      ? cacheInvitation(storedInvitation)
+      : cacheInvitation(buildFallbackInvitation(token));
     warmLocalInvitationCache(token, "get-delivery-invitation");
     return invitation;
   }

src/services/deliveryInvitationApi.test.js

@@ -27,6 +27,19 @@ describe("deliveryInvitationApi", () => {
   beforeEach(() => {
     invoke.mockReset();
     __resetLocalDeliveryInvitationCache();
+    const storage = new Map();
+    vi.stubGlobal("localStorage", {
+      getItem: (key) => storage.get(key) ?? null,
+      setItem: (key, value) => {
+        storage.set(key, String(value));
+      },
+      removeItem: (key) => {
+        storage.delete(key);
+      },
+      clear: () => {
+        storage.clear();
+      },
+    });
   });
 
   it("loads a delivery invitation by token", async () => {
@@ -173,6 +186,27 @@ describe("deliveryInvitationApi", () => {
     });
   });
 
+  it("restores the saved local client invitation after cache reset", async () => {
+    invoke.mockRejectedValueOnce(new Error("worker boot error"));
+    await fetchDeliveryInvitation("client-flow-1001");
+
+    invoke.mockRejectedValueOnce(new Error("worker boot error"));
+    await confirmDeliveryChoice({
+      token: "client-flow-1001",
+      deliveryDate: "2026-04-16",
+      deliveryTime: "После обеда",
+    });
+
+    __resetLocalDeliveryInvitationCache();
+
+    await expect(fetchDeliveryInvitation("client-flow-1001")).resolves.toMatchObject({
+      token: "client-flow-1001",
+      deliveryDate: "2026-04-16",
+      deliveryTime: "После обеда",
+      state: "confirmed",
+    });
+  });
+
   it("creates a delivery invitation from order data", async () => {
     invoke.mockResolvedValueOnce({
       data: {