docs/agents/domain.md

Domain Docs

How the engineering skills should consume this repo's domain documentation when exploring the codebase.

Before exploring, read these

GLOSSARY.md at the repo root, or
GLOSSARY-MAP.md at the repo root if it exists: it points at one GLOSSARY.md per context. Read each one relevant to the topic.
docs/adr/: read ADRs that touch the area you're about to work in. In multi-context repos, also check src/<context>/docs/adr/ for context-scoped decisions.

If any of these files don't exist, proceed silently. Don't flag their absence; don't suggest creating them upfront. The /domain-modeling skill (reached via /grill-with-docs and /improve-codebase-architecture) creates them lazily when terms or decisions actually get resolved.

File structure

Single-context repo (most repos):

1	/
2	├── GLOSSARY.md
3	├── docs/adr/
4	│ ├── 0001-event-sourced-orders.md
5	│ └── 0002-postgres-for-write-model.md
6	└── src/

Multi-context repo (presence of GLOSSARY-MAP.md at the root):

1	/
2	├── GLOSSARY-MAP.md
3	├── docs/adr/ ← system-wide decisions
4	└── src/
5	├── ordering/
6	│ ├── GLOSSARY.md
7	│ └── docs/adr/ ← context-specific decisions
8	└── billing/
9	├── GLOSSARY.md
10	└── docs/adr/

Use the glossary's vocabulary

When your output names a domain concept (in an issue title, a refactor proposal, a hypothesis, a test name), use the term as defined in GLOSSARY.md. Don't drift to synonyms the glossary explicitly avoids.

If the concept you need isn't in the glossary yet, that's a signal: either you're inventing language the project doesn't use (reconsider) or there's a real gap (note it for /domain-modeling).

Flag ADR conflicts

If your output contradicts an existing ADR, surface it explicitly rather than silently overriding:

Contradicts ADR-0007 (event-sourced orders), but worth reopening because…