Data Pipeline Documenter

Prompt

Document this data pipeline thoroughly so another engineer (or future me) can maintain it.

Pipeline name: [PIPELINE NAME]
Owner / team: [OWNER]
Run schedule: [e.g. nightly at 2am UTC]
Critical downstream consumers: [WHO / WHAT DEPENDS ON THIS OUTPUT]

Please produce:
1. **Data Flow Diagram** (ASCII/text format showing: source → transforms → destination)
2. **Input Sources** table (name, type, location, expected schema, update frequency)
3. **Output / Destination** table (name, type, location, schema changes from input)
4. **Transform Inventory** (list each transformation with plain-English description)
5. **Business Logic** (document any non-obvious rules or calculations)
6. **Failure Modes** (what breaks and how to detect it)
7. **Runbook** (step-by-step: how to run, how to re-run failed jobs, how to backfill)
8. **Change Log template** (date | change | author | impact)

Pipeline code:
```python
[PASTE YOUR PIPELINE CODE]
```