preflight

name	preflight
description	Pre-flight validation checklist before executing pipeline tasks
user-invocable	true
disable-model-invocation	false

Pre-Flight Checklist

Run before executing any pipeline script, API extractor, or statistical analysis.

Context Scan (30 seconds)

1. Read domain-facts.md — check for relevant patterns, traps, API notes
2. Scan MEMORY.md "Current State" — any blockers for this task?
3. If touching pipeline code: check KNOWN_ISSUES.md for the affected module
4. Grep codebase for existing import/usage patterns of any libraries involved

Verify Assumptions (1 minute)

5. Read the script to run — verify imports, input files, output paths
6. Verify input parquets exist: ls -la 01_Data/processed/<file>.parquet
7. If API calls: verify key is set
8. If numerical data: spot-check for inf/NaN in input data

Present Plan

9. Write numbered plan with steps, files, commands, duration estimate, risks
10. STOP and wait for user approval

Smoke Test

11. Run with --sample 1 (NOT --sample 50) or verify 1 cached file
12. Confirm output schema before scaling up