Jon Chery
2c08c778a9
REQ-221: skills/ directory with 9 Atelier-derived skill files mapped to the BA.A citizen-developer catalog: api, security, data, testing, observability, errors, devops, infrastructure-as-code, compliance. Each names the Atelier source path, distills first-principles to the citizen-dev-relevant subset, links to agent-checklist triggers, maps to BA.A 5-skill catalog. REQ-222: docs/skills.md index (9-skill table, Atelier provenance, 8 core principles C1-C8, consumption instructions, reference-only domains, excluded domains). PROJECT.md BA.A decision extended with the Atelier-derived skill catalog reference. ---ci--- project: acdl phase: 4 milestone: v1.18 status: execute requirements: covered: [REQ-221, REQ-222] partial: [] ---/ci---
1.5 KiB
1.5 KiB
Skill: Data
Atelier source:
domains/data/(first-principles + schema-design, migrations, indexing) Core principles: C1 Correctness, C4 Locality, C6 Composability BA.A mapping: web API, worker, scheduled job Consumer: read this before authoring a service with a database.
First Principles (citizen-developer-relevant subset)
- Schema reflects the domain, not the application. Tables model real-world entities, not ORM classes.
- Constraints are in the schema. NOT NULL, UNIQUE, FK — the database enforces integrity, not the application.
- Migration has an
upand adown. Every migration is reversible. - Types are domain-accurate. UUID for IDs, TIMESTAMPTZ for timestamps, DECIMAL for money — not string/integer/everything.
- No
SELECT *; no N+1. Explicit columns; eager-load relations.
Agent-Checklist Triggers (§ Data)
- Schema reflects the domain (not the application)
- Constraints are in the schema (NOT NULL, UNIQUE, FK)
- Migration has an
upand adown - Types are domain-accurate (UUID, TIMESTAMPTZ, DECIMAL for money)
- No
SELECT *; no N+1
How Nova Uses This
Nova deploys your infrastructure (RDS, DynamoDB) but does not author your schema. The data skill ensures the schema you bring meets production-grade standards. The submission-readiness gate checks that your contract declares the infrastructure; the data skill checks that the application running on that infrastructure uses the database correctly.