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+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## What this is
+
+Atlas is a **packaging/distribution project**, not a standalone codebase. It assembles the "Atlas Edition" — a Spring Boot application that bundles all standard [Eclipse Dirigible](https://www.eclipse.dev/dirigible/) components (the low-code/in-app development platform) plus codbex branding and a couple of custom UI components. Almost all behavior lives in the `org.eclipse.dirigible` dependencies pulled in via the `com.codbex.platform:codbex-platform-parent` parent POM; this repo mostly selects which Dirigible component groups to include and configures/brands them.
+
+Per the [product page](https://www.codbex.com/products/), Atlas is the **all-in-one edition containing every standard component** — JavaScript development, UIs, debugging, Git, databases, jobs, messaging, security, BPM, and CMS — intended for exploring the full feature set and its applicability across scenarios.
+
+Implication: when investigating runtime behavior or APIs, the answer is usually in the Dirigible dependencies (the `dirigible-components-*` artifacts), not in this repo's source. This repo has only a handful of Java files.
+
+## Build & run
+
+Requires JDK 21 (Amazon Corretto in the Docker image). Maven profiles `quick-build`, `unit-tests`, `integration-tests`, `tests`, and `format` are inherited from the platform parent POM.
+
+```shell
+mvn -T 1C clean install -P quick-build   # fast build, skips tests — produces the runnable jar
+mvn clean install -P unit-tests          # unit tests
+mvn clean install -P integration-tests   # integration tests (Selenide UI + API; slow)
+mvn clean install -P tests               # all tests
+mvn verify -P format                     # apply code formatting (codbex-formatter.xml)
+```
+
+Run the built jar (the `--add-opens` flags are required):
+
+```shell
+java \
+    --add-opens=java.base/java.lang=ALL-UNNAMED \
+    --add-opens=java.base/java.lang.reflect=ALL-UNNAMED \
+    --add-opens=java.base/java.nio=ALL-UNNAMED \
+    -jar application/target/codbex-atlas-*.jar
+```
+
+Add `-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=8000` for debugging on port 8000.
+
+App serves on **port 80** (`application-app-default.properties`). Default login `admin`/`admin`. UI at http://localhost:80, REST/Swagger at http://localhost/swagger-ui/index.html.
+
+### Run a single integration test
+
+Integration tests are JUnit 5 (`*IT.java`). Run one with the standard Maven test selector under the integration-tests profile, e.g.:
+
+```shell
+mvn clean install -P integration-tests -pl integration-tests -Dit.test=HomePageIT
+```
+
+Note `DirigibleCommonTestSuiteIT` is a `@Suite` that aggregates a large set of Dirigible's own `*IT` classes by reference — it's where most of the integration coverage actually comes from.
+
+## Module layout
+
+Maven reactor modules (see root `pom.xml`):
+
+- **application** — the Spring Boot app. `AtlasApplication` is a `@SpringBootApplication` that scans `org.eclipse.dirigible` and excludes Spring's datasource/JPA auto-config (Dirigible manages its own datasources). Its `pom.xml` is the real definition of the edition: it lists every Dirigible component group included (core, security, database, engines, IDE backend/UI, APIs, templates) and the bundled JDBC drivers (Postgres, MongoDB, SAP HANA `ngdbc`, Snowflake, H2). The Spring Boot repackage produces the runnable jar. Also contains the `Dockerfile`.
+- **branding** — codbex/Atlas logo, favicon, and `project.json` packaged as Dirigible resources under `META-INF/dirigible/atlas-branding/`.
+- **components/ui/menu-help** and **components/ui/view-welcome** — custom Dirigible UI components that *override* the stock Dirigible ones (the stock `dirigible-components-ui-menu-help` and `dirigible-components-ui-view-welcome` are explicitly excluded in `application/pom.xml`). These are resource-only modules (HTML/JS + `.extension`/`config` files under `META-INF/dirigible/`), no Java.
+- **integration-tests** — Selenide-based UI and API integration tests against the assembled application.
+
+## Configuration model
+
+Two layers of config:
+
+- **Spring** (`application*.properties`): `spring.profiles.active=common,app-default`. To enable Dirigible features you must activate the `common` and `app-default` profiles explicitly, plus any extra (e.g. `SPRING_PROFILES_ACTIVE=common,snowflake,app-default`).
+- **Dirigible** (`dirigible.properties`): `DIRIGIBLE_*` env-style keys control branding, instance name, multi-tenancy (`DIRIGIBLE_MULTI_TENANT_MODE=false`), ports, etc. Values like `${project.version}` / `${git.commit.id}` are filled at build time.
+
+## Conventions
+
+- Java source files carry the EPL-2.0 license header (see existing files); the `format` profile and `licensing-header.txt` enforce this — run `mvn verify -P format` before committing rather than hand-editing headers.
+- Releases bump the version in all POMs together (the project version is `3.0.0-SNAPSHOT` during development); the Helm chart under `helm/` is versioned in lockstep (see recent git history).