# Refactor Changelog — Lazar Pattern Conformance

**Started:** 2026-05-05
**Spec:** [2026-05-05-lazar-pattern-conformance-design.md](../specs/2026-05-05-lazar-pattern-conformance-design.md)
**Plan:** [2026-05-05-plan-8-lazar-conformance.md](../plans/2026-05-05-plan-8-lazar-conformance.md)
**Branch:** feature/lazar-conformance

This document captures every architectural change made during Plan 8
execution, organized by category. After the plan is merged, use the
"Doc update checklist" at the bottom to update external docs in a
single follow-up pass.

---

## Summary

(Filled in at Task 10 — total files added/modified/deleted/renamed; net test count change; commits.)

---

## 1. File renames (before → after)

### Task 2: Entities split

Entity model moves (git mv — history preserved):
- `packages/auth/src/entities/user.ts` → `packages/auth/src/entities/models/user.ts`
- `packages/auth/src/entities/user.test.ts` → `packages/auth/src/entities/models/user.test.ts`
- `packages/auth/src/entities/session.ts` → `packages/auth/src/entities/models/session.ts`
- `packages/auth/src/entities/session.test.ts` → `packages/auth/src/entities/models/session.test.ts`
- `packages/auth/src/entities/cookie.ts` → `packages/auth/src/entities/models/cookie.ts`
- `packages/auth/src/entities/errors.test.ts` → `packages/auth/src/entities/errors/errors.test.ts`
- `packages/blog/src/entities/article.ts` → `packages/blog/src/entities/models/article.ts`
- `packages/blog/src/entities/article.test.ts` → `packages/blog/src/entities/models/article.test.ts`
- `packages/blog/src/entities/errors.test.ts` → `packages/blog/src/entities/errors/errors.test.ts`
- `packages/marketing-pages/src/entities/page.ts` → `packages/marketing-pages/src/entities/models/page.ts`
- `packages/marketing-pages/src/entities/page.test.ts` → `packages/marketing-pages/src/entities/models/page.test.ts`
- `packages/marketing-pages/src/entities/site-settings.ts` → `packages/marketing-pages/src/entities/models/site-settings.ts`
- `packages/marketing-pages/src/entities/site-settings.test.ts` → `packages/marketing-pages/src/entities/models/site-settings.test.ts`
- `packages/marketing-pages/src/entities/errors.test.ts` → `packages/marketing-pages/src/entities/errors/errors.test.ts`
- `packages/navigation/src/entities/header.ts` → `packages/navigation/src/entities/models/header.ts`
- `packages/navigation/src/entities/header.test.ts` → `packages/navigation/src/entities/models/header.test.ts`

## 2. Files added (with purpose)

### Task 2: Entities split — new error files

- `packages/auth/src/entities/errors/auth.ts` — AuthenticationError, UnauthenticatedError, UnauthorizedError (split from errors.ts)
- `packages/auth/src/entities/errors/common.ts` — InputParseError (auth copy)
- `packages/blog/src/entities/errors/article.ts` — ArticleNotFoundError (split from errors.ts)
- `packages/blog/src/entities/errors/common.ts` — InputParseError (blog copy)
- `packages/marketing-pages/src/entities/errors/page.ts` — PageNotFoundError (split from errors.ts)
- `packages/marketing-pages/src/entities/errors/common.ts` — InputParseError (marketing-pages copy)
- `packages/navigation/src/entities/errors/header.ts` — HeaderNotFoundError (new; navigation had no errors.ts)
- `packages/navigation/src/entities/errors/common.ts` — InputParseError (navigation copy)

## 3. Files deleted (with reason)

### Task 2: Entities split — old errors.ts files removed

- `packages/auth/src/entities/errors.ts` — replaced by `errors/auth.ts` + `errors/common.ts`
- `packages/blog/src/entities/errors.ts` — replaced by `errors/article.ts` + `errors/common.ts`
- `packages/marketing-pages/src/entities/errors.ts` — replaced by `errors/page.ts` + `errors/common.ts`
- (navigation had no `errors.ts` to delete)

## 4. Pattern changes (code-level)

### 4.1 Use cases — factory function pattern
(populated when a use case is migrated)

### 4.2 Controllers — one per use case
(populated when controllers are split)

### 4.3 Entities split — models/ + errors/ subdirs

Pattern now in place across auth, blog, marketing-pages, navigation (media skipped — no entities yet):

- Entity Zod schemas + types live at `entities/models/<x>.ts`
- Domain errors live at `entities/errors/<domain>.ts` (e.g. `errors/auth.ts`, `errors/article.ts`)
- Shared `InputParseError` lives at `entities/errors/common.ts` (one copy per feature — ~6 lines each)
- Colocated entity test files moved alongside their respective sources (`models/*.test.ts`, `errors/errors.test.ts`)
- All imports across factories, contracts, repositories, use cases, controllers, tests, and `src/index.ts` updated to new paths
- navigation divergence: no `errors.ts` existed pre-refactor; `errors/header.ts` (HeaderNotFoundError) and `errors/common.ts` added as new forward-looking stubs

## 5. DI changes

### 5.1 Inversify `.toDynamicValue` bindings
(populated when DI modules are updated)

### 5.2 Mock siblings registered as default bindings
(populated when modules are updated)

## 6. Test refactor patterns

### 6.1 Direct injection (no container rebinding)
(populated when tests are migrated)

## 7. Open issues / deferred decisions

(populated as encountered)

---

## Doc update checklist (deferred — run after merge)

After Plan 8 is merged to `main`, work through this list in a single
batched doc-update pass. Each item points at an external doc that
references the pre-Plan-8 layout or pattern and needs to be brought
in line.

- [ ] `CLAUDE.md` — Key Conventions section: update file path examples to use `entities/models/<x>.ts`; mention factory-function use cases; show `I*UseCase` type aliases
- [ ] `AGENTS.md` (root) — Per-Package Conventions: update naming examples (`<x>.repository.{ts,mock.ts,interface.ts}`); add note about `I*UseCase` / `I*Controller` type aliases; document factory-style DI
- [ ] `docs/guides/adding-a-feature.md` — restructure to use factory-function pattern in every step; update file paths to new layout; show `.toDynamicValue()` bindings
- [ ] `docs/guides/tdd-workflow.md` — update "When to mock" decision tree to show direct factory injection (`signInUseCase(mocks)(input)`) instead of container rebinding; update factory usage examples to reference `entities/models/*` paths
- [ ] `docs/guides/testing-strategy.md` — Mocking section: remove DI-rebinding pattern as the default; show direct factory injection
- [ ] `docs/architecture/vertical-feature-spec.md` — update §10 (file shape examples) to new template; update §13 (testing) to reflect factory pattern + direct injection
- [ ] `docs/architecture/overview.md` — layer descriptions: mention factory-function use cases; add note that controllers are one-per-use-case
- [ ] `docs/architecture/dependency-flow.md` — verify dep flow still accurate with new DI bindings; update examples if any reference old paths
- [ ] `docs/decisions/adr-012-lazar-conformance.md` — NEW ADR documenting the conformance decision and the four intentional divergences (per-feature DI, inversify retained, colocated tests, no Sentry/instrumentation services)
- [ ] Per-feature `AGENTS.md` (auth/blog/media/marketing-pages/navigation) — update file path references; document factory pattern; update Tests section
- [ ] `packages/core-testing/AGENTS.md` — update factory examples to reference `entities/models/<x>.ts` paths
- [ ] `packages/auth/AGENTS.md` — document the new real `UsersRepository` and `AuthenticationService` (Payload-backed)
- [ ] `packages/media/AGENTS.md` — full rewrite — media now has all Clean Architecture layers (entities, application, infrastructure, interface-adapters, DI, integrations/api)
- [ ] Plan 7 plan/spec docs — add a one-line note at the top noting that paths reference the pre-Plan-8 layout; link to refactor changelog

---

## Notes for the doc-update pass author

When updating external docs, apply these substitutions globally:

| Old reference | New reference |
|---|---|
| `entities/<x>.ts` | `entities/models/<x>.ts` |
| `entities/errors.ts` | `entities/errors/<domain>.ts` (or `entities/errors/common.ts`) |
| `mock-<x>.repository.ts` | `<x>.repository.mock.ts` |
| `payload-<x>.repository.ts` | `<x>.repository.ts` (real impl is now the canonical name) |
| `<x>-repository.interface.ts` | `<x>.repository.interface.ts` |
| `class PayloadXRepository` | `class XRepository` |
| Use case calls `container.get(...)` inside its body | Use case is a factory function: `(deps) => async (input) => result` |
| Controller bundles multiple methods (`articles.controller.ts`) | One controller per use case (`get-articles.controller.ts`, `create-article.controller.ts`) |
| Test does `container.unbind(...).bind(...)` in `beforeEach` | Test constructs mocks and injects: `const useCase = signInUseCase(mockUsers, mockAuth);` |
| DI binds use case with `.to(...)` | DI binds use case with `.toDynamicValue((ctx) => factoryFn(ctx.container.get(...)))` |
| Use case + controller imports inject via container | Imports take dependencies as constructor/factory args |

Add `I*UseCase` and `I*Controller` type alias examples wherever use cases / controllers are explained.