Rename DSL.workflow to DSL.subflow

[mcruzdev]

Changes

This pull request aims to change the workflow to subflow, it proposes a clear and intuitive DSL when creating subflows using Java DSL, avoind workflow(workflow.

Closes #1310

[Copilot]

Pull request overview

This PR updates the Java fluent DSL to use subflow(...) instead of workflow(...) for adding a “run workflow/sub-workflow” task, avoiding the awkward workflow(workflow(...)) nesting described in #1310.

Changes:

• Rename DSL.workflow(WorkflowConfigurer) to DSL.subflow(WorkflowConfigurer) in the fluent spec DSL.
• Update fluent spec tests to use subflow(...) where a sub-workflow task is configured.
• Update implementation tests to use DSL.subflow(...) when running a child workflow from the DSL.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
impl/test/src/test/java/io/serverlessworkflow/impl/test/SubWorkflowTest.java	Updates sub-workflow DSL usage to call DSL.subflow(...).
fluent/spec/src/test/java/io/serverlessworkflow/fluent/spec/dsl/DSLTest.java	Updates DSL tests to import/use subflow(...) for sub-workflow tasks.
fluent/spec/src/main/java/io/serverlessworkflow/fluent/spec/dsl/DSL.java	Introduces subflow(WorkflowConfigurer) as the new DSL entrypoint for adding a workflow task.

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[mcruzdev]

#1299 must be aligned with the changes from this pull request.

cc: @matheusandre1