docs: add CLAUDE.md for Claude Code

CLAUDE.md

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+# akeneo-reference-entity-table-bundle
+
+Symfony PHP bundle that adds a "table" attribute type to Akeneo PIM Enterprise Reference Entities, enabling multi-column/multi-row structured data with typed columns (text, number, simple select, multilingual select). Installed into a host Akeneo EE project via Composer.
+
+## Tech Stack
+
+- **PHP 7.4**, Symfony bundle conventions, Akeneo PIM Enterprise ^5.0
+- **PHPSpec 6** (unit), **PHPUnit 8** (integration), **PHPStan 0.12 level 7**, **PHP CodeSniffer 3.5 (PSR-2)**
+- **TypeScript / React / JSX** frontend (Akeneo's RequireJS module system)
+- **Jest** (frontend unit tests), **tslint**, **prettier**
+- **Yarn** for frontend tooling; no webpack config in this bundle (assets compiled by the host app)
+
+## Repository Structure
+
+```
+src/                  PHP source — Attribute/, Record/, Property/, Connector/, DependencyInjection/
+src/Resources/        config/ (services XML, validation YML, requirejs), public/ (frontend TS/TSX/JS), translations/
+spec/                 PHPSpec unit tests (mirrors src/ hierarchy)
+tests/                PHPUnit integration tests (tagged services, overridden services, TestKernel)
+jest/                 Jest frontend tests (mirrors src/Resources/public/ hierarchy)
+.github/workflows/    CI: backend-tests, backend-analysis, frontend-tests, frontend-analysis
+```
+
+## Local Development
+
+This is a library bundle — it has no standalone runtime. Development requires a host Akeneo PIM EE project.
+
+**PHP dependencies:**
+
+```bash
+composer install
+```
+
+**Frontend dependencies:**
+
+```bash
+yarn install
+```
+
+No `.env.example` — the bundle itself needs no environment variables. The host application requires Akeneo EE credentials to install.
+
+## Build / Test / Lint
+
+No Makefile or `.make-rules/` — use the scripts directly.
+
+### PHP
+
+```bash
+# Unit tests (PHPSpec)
+vendor/bin/phpspec run
+
+# Integration tests (PHPUnit)
+vendor/bin/phpunit
+
+# Static analysis
+vendor/bin/phpstan analyse --configuration phpstan.neon.dist
+
+# Code style check
+vendor/bin/phpcs --standard=PSR2 src/
+
+# Lint
+vendor/bin/phplint src/
+```
+
+### Frontend
+
+```bash
+# Unit tests
+yarn jest
+
+# TypeScript unused exports check
+yarn ts-unused-exports tsconfig.json
+
+# Linting
+yarn tslint --project tsconfig.json
+
+# Code style check
+yarn prettier --check "**/*.{ts,tsx}"
+
+# Auto-fix formatting
+yarn prettier --write "**/*.{ts,tsx}"
+```
+
+## Conventions
+
+- **Commits**: Conventional Commits — `feat:`, `fix:`, `chore:`, etc.
+- **PHP style**: PSR-2 enforced by phpcs; strict types expected per project rules
+- **PHPStan level 7** — custom type alias `tablePropertyArray` defined in `phpstan.neon.dist`
+- **Frontend module paths**: TypeScript path aliases in `tsconfig.json` map `@akeneo-pim-community/*` and `@akeneo-pim-enterprise/*` to Akeneo EE packages — these resolve in the host app at runtime
+- **Service tags**: All services in `src/Resources/config/reference_entity.xml` use Akeneo-specific interface tags; adding new handlers requires both the class and a tagged service entry
+- **PHPSpec**: Spec files live in `spec/` and mirror the `src/` namespace; run with `phpspec run`
+- **Jest config**: Tests live in `jest/` and are matched by `**/jest/**/*.test.(js|ts|tsx)`
+
+## Gotchas / Notes
+
+- CI workflows require an SSH key with access to the Akeneo EE Composer repository — local `phpunit` integration tests will fail without a working Akeneo EE installation available
+- `phpstan.neon.dist` is the distributed config — copy or extend it if customizing analysis locally
+- Frontend assets are not compiled by this bundle; they are registered via RequireJS (`requirejs.yml`) and compiled by the host Akeneo application
+- Akeneo EE ^5.0 is the only supported version — no compatibility with CE or other major versions is expressed in `composer.json`
+- Coverage reports output to `build/` (clover XML + HTML) for both PHPSpec and PHPUnit