## 1. Implementation
- [x] 1.1 Add prompt lineage metadata to task parameters.
- [x] 1.2 Add lightweight task summary reading for prompt history.
- [x] 1.3 Add prompt history aggregation and preview mapping.
- [x] 1.4 Add built-in toolbox prompt history tool.
- [x] 1.5 Extend prompt list hover details without changing existing select behavior.
- [x] 1.6 Propagate prompt lineage metadata from AI input workflow steps.

## 2. Verification
- [x] 2.1 Add focused unit tests for title/category/preview compatibility.
- [x] 2.2 Run targeted tests and type checks.