US-2b.6implemented Use AI suggestions during manual labelling
As a user who wants to speed up receipt entry I want see AI-predicted values (date, category, amount) from the Donut model displayed as suggestions in the TUI so that I can accept a suggestion with `Alt+U` instead of typing every field manually.
Acceptance Criteria
- The AI suggestions box shows up to 3 predictions with confidence scores.
- Pressing `Alt+U` applies the top AI suggestion to the current field.
- Pressing `Ctrl+U` applies the top history suggestion (from previously entered values).
- Tab auto-completes if there is exactly one matching suggestion.
No DAG diagram: TUI enhancement — AI suggestions are shown in the labelling UI; the data path is the same as the parent labelling story.
Demo video coming soon