## 1. Implementation

- [x] 1.1 Add digital human script item state, manual add/edit/delete/selection controls, and single/multi-script count display.
- [x] 1.2 Add smart script generation dialog with built-in scenes, style/length/count/custom prompt controls, and append-to-list behavior.
- [x] 1.3 Update avatar task creation to submit one task per selected script while preserving the selected avatar, voice, model, subtitle, format, and background settings.
- [x] 1.4 Style the batch script list and script generation dialog for desktop and responsive layouts.
- [x] 1.5 Run focused type/build validation. `tsc -p apps/web/tsconfig.app.json --noEmit` passes; full `nx build web` is blocked by existing `.venv-funclip` Gradio project graph noise.