Webdav (#923)

* feat: WebDAV backup/restore

- Add WebDAV test/backup/restore commands and settings\n- Fix ja i18n missing keys; decode PROPFIND href as UTF-8\n- Stabilize Windows prompt auto-import tests via CC_SWITCH_TEST_HOME

* chore: format and minor cleanups

* fix: update build config

* feat(webdav): unify sync UX and hardening fixes

* fix(webdav): harden sync flow and stabilize sync UX/tests

* fix(webdav): add resource limits to skills.zip extraction

Prevent zip bomb / resource exhaustion by enforcing:
- MAX_EXTRACT_ENTRIES (10,000 files)
- MAX_EXTRACT_BYTES (512 MB cumulative)

* refactor(webdav): drop deviceId and display deviceName only

---------

Co-authored-by: small-lovely-cat <77799160+small-lovely-cat@users.noreply.github.com>
Co-authored-by: saladday <1203511142@qq.com>

src/components/settings/SettingsPage.tsx

@@ -39,6 +39,7 @@ import { SkillSyncMethodSettings } from "@/components/settings/SkillSyncMethodSe
 import { TerminalSettings } from "@/components/settings/TerminalSettings";
 import { DirectorySettings } from "@/components/settings/DirectorySettings";
 import { ImportExportSection } from "@/components/settings/ImportExportSection";
+import { WebdavSyncSection } from "@/components/settings/WebdavSyncSection";
 import { AboutSection } from "@/components/settings/AboutSection";
 import { GlobalProxySettings } from "@/components/settings/GlobalProxySettings";
 import { ProxyPanel } from "@/components/proxy";
@@ -595,6 +596,11 @@ export function SettingsPage({
                             onExport={exportConfig}
                             onClear={clearSelection}
                           />
+                          <div className="pt-6">
+                            <WebdavSyncSection
+                              config={settings?.webdavSync}
+                            />
+                          </div>
                         </AccordionContent>
                       </AccordionItem>