astrafy-agent-tools

Kimball/dimensional dbt best practices for this repo. Use whenever creating, editing, reviewing, or testing any dbt model, snapshot, seed, macro, or test. Also use when answering questions about data modeling patterns, surrogate keys, SCD2, incremental strategies, or layer architecture in this project.

Rules for editing dbt models under `models/datamart/01_core/` so the auto-generated ERD (`erd/output.d2` + `.svg`) stays valid. Use this whenever you add, rename, modify, or touch any model (sql or yml) under `models/datamart/01_core/`, or when the user mentions ERD, relationships, group tags, `generate_erd.py`, or a failing `generate-erd` / `dbt-docs-generate` pre-commit hook. The script hard-fails the commit if a 01_core model is missing a group tag or has more than one — so assume this skill applies by default for any 01_core edit, even if the user doesn't mention the ERD.