diff --git a/src/components/shell/AppShell.vue b/src/components/shell/AppShell.vue
index b50fb3d..f00f660 100644
--- a/src/components/shell/AppShell.vue
+++ b/src/components/shell/AppShell.vue
@@ -1,7 +1,7 @@
 <template>
   <div class="app-shell-root min-h-[100dvh] w-full bg-surface-2">
     <div
-      class="app-shell-frame mx-auto flex w-full min-w-0 max-w-full flex-col bg-surface shadow-xl shadow-black/5 dark:shadow-black/30 max-w-app max-lg:h-[100dvh] max-lg:max-h-[100dvh] max-lg:overflow-hidden lg:min-h-dvh"
+      class="app-shell-frame mx-auto flex h-[100dvh] max-h-[100dvh] w-full min-w-0 max-w-full flex-col overflow-hidden bg-surface shadow-xl shadow-black/5 dark:shadow-black/30 max-w-app"
     >
       <slot />
     </div>
diff --git a/src/styles/main.css b/src/styles/main.css
index 830bf18..677c745 100644
--- a/src/styles/main.css
+++ b/src/styles/main.css
@@ -34,25 +34,23 @@
     display: none;
   }
 
-  @media (max-width: 1023px) {
-    html,
-    body,
-    #app {
-      height: 100%;
-      overflow: hidden;
+  html,
+  body,
+  #app {
+    height: 100%;
+    overflow: hidden;
+  }
+
+  @supports (-webkit-touch-callout: none) {
+    .app-shell-root {
+      min-height: 100%;
+      min-height: -webkit-fill-available;
     }
 
-    @supports (-webkit-touch-callout: none) {
-      .app-shell-root {
-        min-height: 100%;
-        min-height: -webkit-fill-available;
-      }
-
-      .app-shell-frame {
-        height: 100%;
-        max-height: 100%;
-        min-height: -webkit-fill-available;
-      }
+    .app-shell-frame {
+      height: 100%;
+      max-height: 100%;
+      min-height: -webkit-fill-available;
     }
   }
 
diff --git a/src/views/BusinessesView.vue b/src/views/BusinessesView.vue
index 84100c8..5c61981 100644
--- a/src/views/BusinessesView.vue
+++ b/src/views/BusinessesView.vue
@@ -22,6 +22,13 @@
       <AppSelect id="filterActive" v-model="filterActive" :options="activeFilterOptions" />
     </div>
 
+    <p
+      v-if="infoMessage"
+      class="mt-4 rounded-xl border border-emerald-500/30 bg-emerald-500/10 px-4 py-3 text-sm text-emerald-700 dark:text-emerald-400"
+    >
+      {{ infoMessage }}
+    </p>
+
     <p
       v-if="error"
       class="mt-4 rounded-xl border border-red-500/30 bg-red-500/10 px-4 py-3 text-sm text-red-600"
@@ -249,6 +256,7 @@ const filterCategoryId = ref('');
 const filterActive = ref('all');
 const loading = ref(true);
 const error = ref('');
+const infoMessage = ref('');
 const saving = ref(false);
 
 const formOpen = ref(false);
@@ -322,6 +330,33 @@ function parseCoord(value: string): number | undefined {
   return Number.isFinite(num) ? num : undefined;
 }
 
+async function backfillMissingOwners(
+  bizList: Business[],
+  users: User[],
+): Promise<number> {
+  const usersByMobile = new Map(
+    users.map((user) => [normalizeIranMobile(user.mobile), user]),
+  );
+
+  let filled = 0;
+  for (const biz of bizList) {
+    if (biz.ownerId) continue;
+    const mobile = normalizeIranMobile(biz.contactPhone ?? '');
+    if (!isValidIranMobile(mobile)) continue;
+
+    const existing = usersByMobile.get(mobile);
+    const fullName = existing?.fullName?.trim() || `مدیر ${biz.title}`;
+
+    try {
+      await assignBusinessOwner(biz.id, { mobile, fullName });
+      filled += 1;
+    } catch {
+      /* continue with remaining businesses */
+    }
+  }
+  return filled;
+}
+
 async function load() {
   loading.value = true;
   error.value = '';
@@ -330,12 +365,21 @@ async function load() {
     if (filterCategoryId.value) params.categoryId = filterCategoryId.value;
     if (filterActive.value !== 'all') params.isActive = filterActive.value === 'true';
 
-    const [bizList, cats, users] = await Promise.all([
+    let [bizList, cats, users] = await Promise.all([
       fetchBusinesses(params),
       fetchCategories(),
-      fetchUsers().catch(() => []),
+      fetchUsers().catch(() => [] as User[]),
     ]);
 
+    const filled = await backfillMissingOwners(bizList, users);
+    if (filled > 0) {
+      infoMessage.value = `${filled} مدیر برای کسب‌وکارهای بدون مالک با نام «مدیر + عنوان» اضافه شد.`;
+      [bizList, users] = await Promise.all([
+        fetchBusinesses(params),
+        fetchUsers().catch(() => [] as User[]),
+      ]);
+    }
+
     businesses.value = bizList;
     categories.value = cats;
     usersById.value = Object.fromEntries(users.map((u) => [u.id, u]));
@@ -507,8 +551,8 @@ async function openAssign(biz: Business) {
     }
     assignUser.value = owner;
     assignForm.value = {
-      mobile: owner?.mobile ?? '',
-      fullName: owner?.fullName ?? '',
+      mobile: owner?.mobile ?? biz.contactPhone ?? '',
+      fullName: owner?.fullName ?? (biz.title ? `مدیر ${biz.title}` : ''),
     };
   } finally {
     assignLoading.value = false;