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skills/common/engineering/setup-skills/domain.md
T
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

3.1 KiB

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.