Clean Architecture Monorepo Template

Turborepo + pnpm monorepo organised by vertical features, with an agent-first workflow and five conformance gates.

This template is built for agent-driven development. Sandcastle is the orchestration substrate; pnpm work dispatch is the entry point. See ADR-019 for the decision rationale and docs/guides/runbook.md for end-to-end usage.

Start here

Read docs/guides/runbook.md — day-1 onboarding (prerequisites, env vars, daily commands, troubleshooting, Using Sandcastle for agent dispatch).

Quick reference

pnpm install           # Install + auto-wire husky pre-commit hooks
pnpm dev               # All dev servers (web-next:3000, cms:3001, storybook:6006)
pnpm test              # All tests
pnpm typecheck         # TypeScript across all packages
pnpm lint              # ESLint (incl. 8 conformance/* rules)
pnpm conformance       # Cross-feature event closure
pnpm fallow            # Whole-codebase: dead exports, dupes, complexity
pnpm turbo boundaries  # Workspace dependency graph
pnpm work status       # docs/work/ epic + story state
docker compose up -d   # Start PostgreSQL

Sandcastle setup (one-time)

Required only if you'll use pnpm work dispatch --execute or pnpm work decompose <id> --execute (agent dispatch). The dispatch loop runs the implementer / reviewer / decomposer agents inside an isolated Docker sandbox; the image is built once locally.

# 1. Ensure Docker is running
docker info >/dev/null

# 2. Build the sandcastle image (reads .sandcastle/Dockerfile)
pnpm exec sandcastle docker build-image
# Tags as: sandcastle:template-vertical (derived from the root package.json name)

# 3. Pick ONE auth path:
#    (a) Recommended — Claude Pro/Max subscription:
claude login           # one-time; ~/.claude/ becomes the auth source
#    (b) Fallback — API key:
export ANTHROPIC_API_KEY=sk-ant-...

macOS users: subscription auth needs an extra step. Claude Code stores credentials in the macOS Keychain by default, so the host's ~/.claude/ directory has no .credentials.json for the sandbox to read. Two workarounds:

# (preferred for macOS subscription users) extract keychain -> file once:
security find-generic-password -s "Claude Code-credentials" -a "$USER" -w \
  > ~/.claude/.credentials.json
chmod 600 ~/.claude/.credentials.json
# Trade-off: credentials now live as a plaintext file at the path; refresh
# when the token expires (re-run the same one-liner). The file is in your
# home directory — chmod 600 + your home permissions are the protection.

# OR fall back to API key — no host changes needed:
export ANTHROPIC_API_KEY=sk-ant-...

Linux + WSL users with claude login write ~/.claude/.credentials.json directly; nothing extra needed.

After the image exists, dispatch flows work without further setup:

pnpm work dispatch                                    # print plan (safe anywhere)
pnpm work dispatch --execute                          # actually dispatch via sandcastle
pnpm work decompose <prd-id>                          # print decompose plan
pnpm work decompose <prd-id> --execute                # decompose an approved PRD

To rebuild the image after changing .sandcastle/Dockerfile:

pnpm exec sandcastle docker remove-image
pnpm exec sandcastle docker build-image

See docs/guides/runbook.md → Using Sandcastle for the full dispatch lifecycle, auth modes, and troubleshooting.

Documentation map

• docs/guides/runbook.md — start here
• CLAUDE.md — full conventions reference
• AGENTS.md — package map + boundary rules
• docs/guides/conformance-quickref.md — manifest + 5-gate daily reference
• docs/architecture/agent-first-workflow-and-conformance.md — full design
• docs/architecture/feature-conformance-explainer.html — interactive explainer

Scaffolding

pnpm turbo gen feature <name>             # Scaffold a feature (manifest + contracts + tests)
pnpm turbo gen event                      # Event contract or handler (requires gen core-package events)
pnpm turbo gen job                        # Background job
pnpm turbo gen realtime                   # Realtime channel (requires gen core-package realtime)
pnpm turbo gen core-package <name>        # Optional core: events / realtime / trpc / ui / audit
pnpm turbo gen core-ui-component <name>   # Atomic-design component

Generator-first is non-negotiable — hand-rolled feature/event/job/realtime/component code is rejected by reviewer agents and may fail the CI scaffold-drift check.

Optional packages

Five core packages scaffold on demand:

pnpm turbo gen core-package realtime  # Socket.IO realtime layer (ADR-016)
pnpm turbo gen core-package events    # Cross-feature events + Payload jobs (ADR-015)
pnpm turbo gen core-package trpc      # tRPC server setup
pnpm turbo gen core-package ui        # Design system
pnpm turbo gen core-package audit     # DPA-compliant audit logging (ADR-018)

See docs/architecture/template-tiers.md for the full tier list.