support 2026-07 version

[1415003719]

Summary

Regenerate the SDK for API version 2026-07 (15.0.0) with AfterShip/sdk-generator from OAS production/2026-07.

Changes vs 14.0.0 (2026-01)

All changes match the 2026-07 migration guide — no breaking type renames:

• Base URL → /tracking/2026-07/, gem version → 15.0.0
• New models: tracking_shipment_dimensions, tracking_multi_piece_info (+pieces/type), tracking_proof_of_delivery, tracking_shipment_direction (also on create/update requests), tracking_return_shipment, tracking_forward_shipment
• New fields: checkpoint.hash, customers[].id
• New delivery sub-statuses need no code change (subtag is a plain string)

Verification

• ruby -c on all files pass; rubocop --autocorrect applied
• All 16 OAS operations exercised against the live API with a test org key: full tracking write lifecycle (create → get → update → mark-completed → retrack → delete), couriers, courier-connections, EDD; all responses and business errors deserialized into SDK types (AftershipAPI::ApiError with meta_code populated), no parse failures
• New-field round-trip verified: shipment_direction and customers[].id written and read back successfully; test data cleaned up

🤖 Generated with Claude Code