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skills/common/engineering/setup-skills/domain.md
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gitadmin 68f9b4691e feat(skills): add engineering skill definitions under common/engineering/ all from @mattpocock
Add 10 skill definitions covering codebase design, domain modeling,
test-driven development, triage, and development workflows:

- codebase-design: vocabulary and patterns for designing deep modules
- domain-modeling: build and sharpen project domain models
- grill-with-docs: interview-based design refinement with documentation
- improve-codebase-architecture: scan and report on deepening opportunities
- resolving-merge-conflicts: structured approach to merge/rebase conflicts
- setup-skills: per-repo configuration for engineering skills
- tdd: test-driven development workflow with vertical slices
- to-issues: break plans into tracer-bullet vertical slice issues
- to-prd: synthesize conversations into PRDs
- triage: state machine for issue/PR triage roles

Includes supporting files for ADR formats, issue tracker integrations
(GitHub, GitLab, Gitea), triage labels, and agent brief templates.
2026-06-25 12:01:55 -04:00

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Markdown

# Domain Docs
How the engineering skills should consume this repo's domain documentation when exploring the codebase.
## Before exploring, read these
- **`CONTEXT.md`** at the repo root, or
- **`CONTEXT-MAP.md`** at the repo root if it exists — it points at one `CONTEXT.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 `/doc/adr/<context>/` 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):
```
/
├── CONTEXT.md
├── docs/adr/
│ ├── 0001-event-sourced-orders.md
│ └── 0002-postgres-for-write-model.md
├── src/
└── .gitignore ← docs/adr/ ignored
```
Multi-context repo (presence of `CONTEXT-MAP.md` at the root):
```
/
├── CONTEXT-MAP.md
├── src/
├── .gitignore ← docs/adr/ ignored
└── docs/adr/ ← system-wide decisions
├── ordering/ ← context scope decisions
│ ├── CONTEXT.md
│ └── 0001-event-source-orders.md
└── billing/ ← context scope decisions
├── CONTEXT.md
└── 0002-postgres-for-write-model.md
```
## ADR lifecycle
ADRs live on the forge wiki and are cloned into `docs/adr/` during setup (`/setup-matt-pocock-skills`). The source repo ignores `docs/adr/` via `.gitignore`.
- **Reading** — skills read ADRs by relative path (`docs/adr/...`) as before. The wiki clone is transparent.
- **Creating / updating** — skills write ADRs to `docs/adr/` as files. Changes accumulate in the wiki clone's local git state.
- **Pushing** — at end of session, the agent commits new/modified ADRs to the wiki clone and pushes to the forge wiki remote, using `git pull --rebase` before push to handle any concurrent web edits.
- **Commit message convention**: `docs(adr): <action> ADR-NNNN — <short description>`
## 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 `CONTEXT.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…_
## ADR storage
ADR documents are stored in a clone repo of the forge wiki, if the `docs/adr` folder does not exist ask the user for the repo url and clone it. Commit each changes without asking the user for a commit message and push to the remote.