- Add `ai_points_insufficient` / `ai_points_unavailable` Chinese mappings in
errors.ts so the toast copy is localized.
- Add `showAiPointsInsufficientModal()` helper that renders a centered
`Modal.confirm` with localized title/body and a "查看点数明细" action that
routes to `/account/ai-points`. The helper is debounced so concurrent
failed requests do not stack multiple modals.
- Trigger the modal globally from the admin-web response interceptor when
the backend returns `ai_points_insufficient`, so every AI-generating
endpoint surfaces the same prominent prompt without per-callsite changes.
- Drop the English `detail` for ai_points_insufficient in `formatError` so
the secondary toast stays pure Chinese.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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