New Features

• Admin backend SPA (Vue3 + Element Plus): login, dashboard, example management, feedback management, user management, work management, author & collection management.
• User management: list / detail, ban / unban, credit adjustment (writes a ledger, balance never negative), plan/tier adjustment.
• Work management: list / detail, review (approve / reject / hide), delete.
• Example / author / collection management: inclusion-status switching, hide, AI bio re-run.
• Feedback & reports: a front-end "feedback" entry + feedback form page (requires login), covering suggestion / report / defect types; backend list filtering and handling (in progress / resolved / rejected).
• Operations dashboard: total overview (users / cases / works / feedback / tips), registration and crawl trends, credit consumption aggregated by reason, total tip amount, top-20 popular tags.
• Admin detail pages changed to standalone full pages, with front-end links and source links attached.

Experience Improvements

• Admin lists: whole-row navigation, sortable headers, URL-synced search, vertically centered query button.
• Admin localized to Chinese; example titles shown in Chinese.

Bug Fixes

• Fixed admin login 405 / 504, feedback form i18n, and several list-interface 500 errors.