Danijel Martinek
412d994733
Lands L1 of the agent-first coverage architecture (ADR-020) — the
cover-the-diff gate. Reads a merged lcov + git diff against a base
ref, asserts every changed *executable* line was exercised.
Script: scripts/coverage/diff.mjs (zero-dep Node ESM)
- parseLcov: SF -> Map<line, count>; only DA records read
- parseGitDiff: parses --unified=0 output into Map<file, Set<line>>
- computeDiffCoverage: cross-references both, emits result tree
- Allowlist of paths that don't gate (tests, configs, docs, .sh,
DI bootstrap, interfaces, CMS, factories, contracts, UI)
- Path matching handles three lcov path conventions: absolute,
repo-relative, and per-package relative
- CLI flags: --base (default origin/main), --lcov (default
coverage/lcov.info), --json (suppress stderr summary)
- stdout: machine-readable JSON for the dispatch loop
- stderr: human summary
- Exit 0 on pass, 1 on fail or error
Test surface: scripts/coverage/diff.test.mjs (14 tests, all green)
- Fixtures at scripts/coverage/__fixtures__/{sample.lcov,sample-diff.patch}
- Covers: lcov parsing, diff parsing, pass path, uncovered lines,
non-executable line skipping, no-coverage-data detection,
allowlist filtering, end-to-end mixed case, path matching
Wired:
- root package.json adds "coverage:diff" script
- .gitignore anchored so per-package coverage/ stays ignored but
scripts/coverage/ stays tracked
Smoke-tested end-to-end against packages/auth/coverage/lcov.info —
correctly skips shell scripts + manifest files (via allowlist + path
suffix match), correctly flags files not present in the per-package
lcov (which is expected; full repo coverage needs the L2 aggregate
that the next story lands).
CI integration deferred to the L2 aggregate story (the merged
coverage/lcov.info this script reads doesn't exist yet — pnpm
coverage:aggregate produces it).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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, web-tanstack:3002, 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
Documentation map
docs/guides/runbook.md— start hereCLAUDE.md— full conventions referenceAGENTS.md— package map + boundary rulesdocs/guides/conformance-quickref.md— manifest + 5-gate daily referencedocs/architecture/agent-first-workflow-and-conformance.md— full designdocs/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.