Add claude.md file [ci skip]

Signed-off-by: Paolo Di Tommaso <[email protected]>

Author: pditommaso

CLAUDE.md

@@ -4,7 +4,9 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 ## Project Overview
 
-Nextflow is a scientific workflow management system built primarily in Groovy and Java. It enables the creation of scalable, portable, and reproducible computational pipelines using a dataflow programming model. The project follows a modular architecture with a plugin-based system for cloud providers and specialized features.
+Nextflow is a scientific workflow management system built primarily in Groovy and Java.
+It enables the creation of scalable, portable, and reproducible computational pipelines using a dataflow programming model.
+The project follows a modular architecture with a plugin-based system for cloud providers and specialized features.
 
 ## Development Commands
 
@@ -23,7 +25,7 @@ Nextflow is a scientific workflow management system built primarily in Groovy an
   - JaCoCo integration for code coverage
 - **Specific test class**: `./gradlew test --tests "SomeTestClass"`
 - **Specific module**: `make test module=nextflow`
-- **Smoke tests**: `make smoke` or `NXF_SMOKE=1 ./gradlew test`
+- **Smoke tests**: `make smoke` or `NXF_SMOKE=1 ./gradlew test` (skips long-running tests, network-dependent tests, and cloud provider integration tests)
 - **Integration tests**: Run from `tests/` directory using test runner scripts
 - **Cloud validation tests**: Located in `validation/` directory (requires credentials)
 
@@ -89,8 +91,9 @@ Nextflow is a scientific workflow management system built primarily in Groovy an
 - Commit should be signed by adding a `Signed-off-by` line to the commit message as shown below, or by using the `-s` option (see CONTRIBUTING.md for details)
 
 ## Important Files
-- `VERSION`: Contains current version number
+- `VERSION`: Define the current version number
 - `nextflow`: Launch wrapper script (updated by build process)
 - `.launch.classpath`: Development classpath (generated by `make compile`)
 - `build.gradle`: Root build configuration with multi-module setup
 - `settings.gradle`: Gradle project structure definition
+- `plugins/*/VERSION`: Define the version of the corresponding plugin sub-project.