Implement: Zgw Api Mapping

[rubenvdlinde]

OpenSpec Change: zgw-api-mapping

Spec path: openspec/changes/zgw-api-mapping

Generated from Specter (6 features).

Quality Warnings

• Missing proposal.md
• Missing design.md
• Missing tasks.md

[rubenvdlinde]

Closing as duplicate of #221.

This issue was created by an earlier run of Specter's push_spec_pipeline.py before the script checked for pre-existing issues. The canonical tracking issue for this spec is #221; please continue all discussion and label management there.

Automated housekeeping — integration-registry review pass.