feat(home): add compact home page preset to avoid abuse classification

- Add compact_home_enabled setting to provide a minimal landing page
- Preserves custom home_content priority over compact mode
- Renders only site identity, navigation, and login/dashboard link
- Avoids marketing copy that triggers anti-fraud systems
- Includes focused backend/frontend tests and i18n support

Fixes #5065

frontend/src/views/admin/SettingsView.vue

@@ -5974,6 +5974,19 @@
                 </p>
               </div>
 
+              <!-- Compact Home Page -->
+              <div class="flex items-center justify-between border-t border-gray-100 pt-4 dark:border-dark-700">
+                <div>
+                  <label class="font-medium text-gray-900 dark:text-white">{{
+                    t("admin.settings.site.compactHome")
+                  }}</label>
+                  <p class="text-sm text-gray-500 dark:text-gray-400">
+                    {{ t("admin.settings.site.compactHomeHint") }}
+                  </p>
+                </div>
+                <Toggle v-model="form.compact_home_enabled" data-testid="compact-home-toggle" />
+              </div>
+
               <!-- Hide CCS Import Button -->
               <div
                 class="flex items-center justify-between border-t border-gray-100 pt-4 dark:border-dark-700"
@@ -8834,6 +8847,7 @@ const form = reactive<SettingsForm>({
   contact_info: "",
   doc_url: "",
   home_content: "",
+  compact_home_enabled: false,
   backend_mode_enabled: false,
   hide_ccs_import_button: false,
   payment_enabled: false,
@@ -10358,6 +10372,7 @@ async function saveSettings() {
       contact_info: form.contact_info,
       doc_url: form.doc_url,
       home_content: form.home_content,
+      compact_home_enabled: form.compact_home_enabled,
       backend_mode_enabled: form.backend_mode_enabled,
       hide_ccs_import_button: form.hide_ccs_import_button,
       table_default_page_size: form.table_default_page_size,

frontend/src/views/admin/__tests__/SettingsView.spec.ts

@@ -376,6 +376,7 @@ const baseSettingsResponse = {
   contact_info: "",
   doc_url: "",
   home_content: "",
+  compact_home_enabled: false,
   hide_ccs_import_button: false,
   table_default_page_size: 20,
   table_page_size_options: [10, 20, 50, 100],
@@ -678,6 +679,22 @@ describe("admin SettingsView payment visible method controls", () => {
     adminSettingsFetch.mockResolvedValue(undefined);
   });
 
+  it("submits the compact home page toggle", async () => {
+    const wrapper = mountView();
+    await flushPromises();
+
+    const toggle = wrapper.get('[data-testid="compact-home-toggle"]');
+    expect((toggle.element as HTMLInputElement).checked).toBe(false);
+
+    await toggle.setValue(true);
+    await wrapper.find("form").trigger("submit.prevent");
+    await flushPromises();
+
+    expect(updateSettings).toHaveBeenCalledWith(
+      expect.objectContaining({ compact_home_enabled: true }),
+    );
+  });
+
   it("renders panel rate limit card and saves settings", async () => {
     getPanelRateLimitSettings.mockClear();
     updatePanelRateLimitSettings.mockClear();