retro

会话复盘，挖掘修正与审查结论并整理为去重的经验卡片。

把一次会话里用户的改动、审查结论和排错根因都挖出来，整理成去重的经验卡片，方便以后查阅和复用。适合在会议、代码评审或长会话结束后做复盘，把零散结论结构化成可搜索的教训条目。会自动合并重复项并清理过期信息，保持经验库干净、不膨胀。

## Progress Contract

Register these steps as a native task list at Step 1, before beginning.
Report progress as "N steps remaining, size class S/M/L" — never wall-clock ETAs.

Steps: (1) mine-session, (2) write-cards, (3) curate.

## Workflow

### Step 1 — Mine session

Dispatch **three subagents in one message** — one per signal type — to mine the conversation
history concurrently. Sequential mining of independent signal types is a defect:

- **(a) User corrections** — any place the user rejected an output, flagged a mistake, or
  corrected an assumption. Extract the erroneous pattern and the correct approach.
- **(b) Confirmed review findings** — findings that survived adversarial verific