admin-panel: convert branch and workshop add/edit forms into modals

Both share FacilityList.vue, which now accepts an addRid/addLabel pair and a
#form slot: when addRid is supplied, edit opens the slot's modal instead of
navigating, and a ListPageHeader add button appears above the list. Branch
and workshop each plug their own AddBranches/AddWorkshop instance into that
slot, keyed by editingId so switching rows remounts the form (fresh
onMounted load) rather than needing new watch-based reactivity.

The /branch/add, /branch/edit/:id, /workshop/add, /workshop/edit/:id routes
are unchanged and still work as a route-based fallback.

Verified: pnpm build passes.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

apps/admin-panel/src/views/branch/AddBranches.vue

@@ -2,11 +2,55 @@
   <!--
     Ported from legacy henza_admin/src/views/branch/AddBranches.vue.
     Serves BOTH create and edit — EditBranches.vue is a wrapper over it.
+    Converted to a modal (BaseFormModal): the /branch/add and /branch/edit/:id
+    routes still exist and still render this component directly as a route-based
+    fallback, but ListBranches.vue now opens it as a modal via open/id props.
 
     A branch's manager is an EXISTING admin picked from user/list. (The workshop
     form differs: it creates its supervisor inline — see AddWorkshop.vue.)
   -->
-  <a-spin :spinning="loading">
+  <BaseFormModal
+    v-if="asModal"
+    :open="Boolean(open)"
+    :id="id"
+    add-title="افزودن شعبه"
+    edit-title="ویرایش شعبه"
+    :loading="loading"
+    :submitting="loading"
+    @update:open="$emit('update:open', $event)"
+    @submit="handleSubmit"
+  >
+    <div class="grid-2">
+      <a-form-item label="نام شعبه" :validate-status="err.name ? 'error' : ''" :help="err.name">
+        <a-input v-model:value="form.name" />
+      </a-form-item>
+
+      <a-form-item label="تلفن شعبه">
+        <a-input v-model:value="form.phone" />
+      </a-form-item>
+
+      <a-form-item label="مدیر">
+        <a-select
+          v-model:value="form.user_id"
+          show-search
+          allow-clear
+          placeholder="انتخاب کنید"
+          :filter-option="filterOption"
+        >
+          <a-select-option v-for="u in adminUsers" :key="u.id" :value="u.id">
+            {{ u.name }}
+          </a-select-option>
+        </a-select>
+      </a-form-item>
+    </div>
+
+    <a-form-item label="آدرس">
+      <a-textarea v-model:value="form.address" :auto-size="{ minRows: 2, maxRows: 5 }" />
+    </a-form-item>
+  </BaseFormModal>
+
+  <!-- route-based fallback for direct links to /branch/add and /branch/edit/:id -->
+  <a-spin v-else :spinning="loading">
     <a-form layout="vertical" @submit.prevent="handleSubmit">
       <a-card :title="id ? 'ویرایش شعبه' : 'افزودن شعبه'" class="mb-base">
         <div class="grid-2">
@@ -47,12 +91,27 @@
 import { onMounted, reactive, ref } from 'vue';
 import { useRoute, useRouter } from 'vue-router';
 import { message } from 'ant-design-vue';
+import BaseFormModal from '../../components/common/BaseFormModal.vue';
 import api from '../../api/client';
 
+const props = defineProps<{
+  /** Present -> rendered as a modal by the parent list page. */
+  open?: boolean;
+  id?: string;
+}>();
+const emit = defineEmits<{
+  (e: 'update:open', value: boolean): void;
+  (e: 'success'): void;
+}>();
+
+// Fixed at mount: the parent decides once whether this instance is a modal
+// or the plain /branch/add or /branch/edit/:id route.
+const asModal = props.open !== undefined;
+
 const route = useRoute();
 const router = useRouter();
 
-const id = route.params.id as string | undefined;
+const id = asModal ? props.id : (route.params.id as string | undefined);
 const loading = ref(false);
 const adminUsers = ref<{ id: string; name: string }[]>([]);
 
@@ -82,7 +141,12 @@ async function handleSubmit() {
       await api.post('branch', form);
     }
     message.info('اطلاعات با موفقیت به ثبت رسید.');
-    router.push('/branch/list');
+    if (asModal) {
+      emit('success');
+      emit('update:open', false);
+    } else {
+      router.push('/branch/list');
+    }
   } catch (e: any) {
     message.error(e?.response?.data?.message ?? 'خطا در ثبت اطلاعات.');
   } finally {