---
name: save-session
description: Save and record the current work session to docs/sessions/. Trigger ONLY on explicit "save session", "zapisz sesję", or "wrap up" — never invoke proactively between tasks.
---

**Trigger condition**: user explicitly says "save session", "zapisz sesję", "wrap up", or equivalent.
Never invoke proactively. Never invoke mid-task.

## 1. Determine Session Boundary

1. Read the latest entry file in `docs/sessions/` — use its last `## Session HH:MM` heading timestamp as the start boundary.
2. Fallback if no previous entry exists: 24 hours ago.

## 2. Collect Facts (deterministic only — no invention)

Run exactly:
```bash
# All commits since boundary
git --no-pager log --oneline <boundary>..HEAD

# Changed file summary
git --no-pager diff --stat <boundary>..HEAD
```

From the visible conversation transcript: deploys run and their outcomes, test results seen.

## 3. Write the Session Entry

**APPEND** to `docs/sessions/YYYY-MM-DD.md` (create the file if it doesn't exist for today).
Never overwrite existing content.

```markdown
## Session HH:MM

### Commits
<output of git log --oneline>

### Files changed
<output of git diff --stat>

### Deploys
<list from transcript, or "None recorded">

### Narrative
> _user-provided summary_
```

The `> _user-provided summary_` placeholder is **mandatory**. Never fill it in. The user supplies the narrative separately if desired.

## 4. What NOT to Touch

- `backlog.md` — only on explicit "update backlog" instruction
- `CLAUDE.md` — only on explicit "update CLAUDE.md" instruction
- Any other file not listed above

## 5. Commit

Stage and commit **only** the session file:

```bash
git add docs/sessions/YYYY-MM-DD.md
git commit -m "docs: session YYYY-MM-DD HH:MM"
```

No other files. No `git add -A`.