Add project selection and auto-fill to Behave launch configuration

[Copilot]

The Behave backend was missing project selection UI and auto-fill behavior that the Java backend already had, requiring manual entry of all paths.

Changes

• Added project selection field with Browse button to CucumberBehaveMainTab, matching Java backend UI
• Auto-fill on creation - when creating launch config from open feature file, auto-populates project name, feature path, and working directory from active editor context
• Created CucumberBehaveLaunchUtils - mirrors Java backend's CucumberFeatureLaunchUtils for getting active project and feature path
• Updated CucumberBehaveLauncher to set project name when creating configs programmatically
• Added org.eclipse.jdt.debug.ui dependency for JDIDebugUIPlugin and LauncherMessages

Implementation

Project selection dialog:

ElementListSelectionDialog dialog = new ElementListSelectionDialog(
    getShell(), WorkbenchLabelProvider.getDecoratingWorkbenchLabelProvider());
dialog.setElements(ResourcesPlugin.getWorkspace().getRoot().getProjects());

Auto-fill in setDefaults():

IProject project = CucumberBehaveLaunchUtils.getProject();
String featurePath = CucumberBehaveLaunchUtils.getFeaturePath();

if (project != null && featurePath != null) {
    config.setAttribute(ATTR_PROJECT, project.getName());
    config.setAttribute(ATTR_FEATURE_PATH, featurePath);
    config.setAttribute(ATTR_WORKING_DIRECTORY, project.getLocation().toOSString());
}

Backward compatible - existing configs without project attribute load with empty project field.

[!WARNING]

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• http://download.eclipse.org:80/releases/2025-09/content.jar
  • Triggering command: REDACTED, pid is -1 (http block)
• http://download.eclipse.org:80/releases/2025-09/p2.index
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If you need me to access, download, or install something from one of these locations, you can either:

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Original prompt

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This section details on the original issue you should resolve

<issue_title>Creating new behave run config should include the project and reuse suggest a feature file folder</issue_title> <issue_description>The behave backend is currently missing the eclipse-project selection (like the java backend has), also the java backend fill out the feature path automatically based on the current selected project when creating a new launch config in the wizard.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes cucumber/cucumber-eclipse#574

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