Structure a Django Model

You are defining or restructuring a Django model in an opinionated, fully type-safe Django project. Every convention below is mandatory. Do not deviate.

BEFORE WRITING CODE

Read the model file being created or modified, plus:

• src/project/ids.py — existing ID prefixes
• Any existing models in the same app — for cross-model index considerations
• The repository that queries this model — to understand real query patterns
• src/<app>/admin.py — existing admin registrations

Model Structure

Every model follows this exact ordering of members: