# engineering-core

- Author: QuantLab Deploy
- Repository: alisitki/quantlab-backend
- Version: 20260131125222
- Stars: 0
- Forks: 0
- Last Updated: 2026-02-06
- Source: https://github.com/alisitki/quantlab-backend
- Web: https://mule.run/skillshub/@@alisitki/quantlab-backend~engineering-core:20260131125222

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# QuantLab Engineering Core

## Purpose
Standardize how code is written in QuantLab.

## Always do
- Start with PLAN before code.
- Preserve determinism (ordering, cursors, idempotency).
- Minimal patch, no random refactors.
- Add validation at IO boundaries.
- Add logs: start, end, counts, durations.

## Output format
1) PLAN
2) FILE PATCH LIST
3) VERIFY STEPS

## Never
- Break ordering rules
- Add endpoints without auth or rate limit
- Silent failure