Finish feature

Run the finish-feature workflow.

Follow the pipeline in references/gitflow-finish-pipeline.md:

• Workflow Type: feature
• Arguments: $ARGUMENTS

Mechanical steps (finish, push, return-to-develop, cleanup) run through scripts/finish-branch.sh — see the pipeline reference for usage.

Pre-flight invariants (clean tree, correct branch) and testing requirements are enforced per references/invariants.md; cleanup after finishing follows references/cleanup.md.