[Alexandre-T]

Closes #14.

GeoJsonStrategy now encodes Geometry and Geography MultiPolygons in XY and XYZ, preserving Polygon, ring and position order and Z. Aggregates without members produce {"type":"MultiPolygon","coordinates":[]}. Any EMPTY Polygon or incompatible ring rejects the complete conversion with UnsupportedGeometryStructureException.

The internal handler calls the existing Polygon encoder for each member, reusing the approved signed-area orientation policy. Shared dimension, reference omission, unsupported type/interface and JSON exception contracts remain unchanged. RFC 7946 sections 3.1.6 and 3.1.7 define the representation; the approved antimeridian preservation policy and caller responsibilities remain documented. No new public API, dependency, architectural decision or breaking change is introduced. Binary strategies are unchanged; binary examples do not apply.

GeometryMultiPolygonTest and GeographyMultiPolygonTest cover literal XY/XYZ examples, singleton and empty aggregates, member/ring/position order, reference omission, antimeridian preservation, mixed/all-EMPTY members, incompatible exterior/interior orientation, zero area, and XYM/XYZM rejection including EMPTY. ExceptionContractTest covers the unchanged missing-interface exception and real non-finite altitude encoding with the original JsonException preserved. English strategy documentation and testing notes are updated.

Validation:

• vendor/bin/phpunit --no-coverage --filter MultiPolygonTest: 30 tests, 90 assertions passed.
• composer test: 946 tests, 1521 assertions passed.
• composer quality: passed; existing PHPMD/PDepend dependency deprecation notices under PHP 8.4 remain.
• git diff --cached --check: passed.

Ready for independent review. No Reviewer agent was launched, as explicitly requested by Alexandre. This PR is not merged and the Story is not declared Done.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (9ae1e3c) to head (d8cebd1).

Additional details and impacted files

@@             Coverage Diff             @@
##                main       #23   +/-   ##
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  Coverage     100.00%   100.00%           
- Complexity       173       178    +5     
===========================================
  Files             15        15           
  Lines            317       328   +11     
===========================================
+ Hits             317       328   +11     

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[Alexandre-T]

READY FOR MERGE — PR #23, revision d8cebd1, satisfies Story #14.
No blocking findings or unresolved gates were identified. The implementation preserves coordinates, Z and ordering, rejects EMPTY members and incompatible rings, and reuses the approved Polygon orientation checks. Tests and English documentation cover the applicable requirements, consistent with RFC 7946 and the approved LongitudeOne policies.
I verified successful CI results for PHP 8.4 and all four quality tools and PHP 8.5. Applicable pre-merge Definition of Done requirements are satisfied.
This was a read-only review: I did not rerun tests, modify files, or publish anything to GitHub. Merge and final verification remain required before the Story becomes Done.