TrueGrowth/openspec/changes/archive/2026-04-29-add-prompt-history-tool/proposal.md

Change: Add Prompt History Tool

Why

Users need a local way to manage prompts across generated tasks, including the original prompt, the prompt sent to generation, and a quick result preview.

What Changes

• Add a built-in toolbox tool named "提示词历史".
• Derive prompt history from existing task records instead of creating a separate history entity.
• Store lightweight prompt lineage metadata on newly created generation tasks.
• Extend reusable prompt list items to show title, sent prompt, tags, and result preview on hover.

Impact

• Affected specs: toolbox, prompt-history
• Affected code: toolbox built-in registry, task summary reader, prompt history aggregation service, prompt list UI, AI input workflow task metadata.