v4.3.0

Added

• Add 23 subscription retention messaging tools in SubscriptionsWorker (subscriptions_*) covering App Store Connect API 4.6 retention messages (list, get, create, delete), versions (list, get, create), localizations (list, get, create, update, delete) with Apple header/body/emoji/price-mention preflight validation, retention offers (list, get, create, update, delete, list_retention_offer_prices), and subscription retention relationships (list_retention_message_subscriptions, get_retention_message_for_subscription, set_retention_message, add_retention_message_offers, remove_retention_message_offers).
• Extend AssetsWorker (assets_*) to support retentionMessageVersion (feature = "RETENTION_MESSAGING") image placements via Apple's to-one /v1/retentionMessageVersions/{id}/placement endpoint, with multi-page app-scoped ownership verification and explicit rejection of video placements and multi-placement reordering.
• Extend ReviewSubmissionsWorker (review_submissions_*) to support retention_message_version_id (retentionMessageVersion / retentionMessageVersions) in review submission item assembly and reads.
• Pin the official Apple 4.6 OpenAPI specification (1,027 paths, 1,337 operations) and update the operation manifest (537 public tools, 528 mapped operations, 440 waived, 369 scope-rule out of scope, 4,562 classified optional inputs with 0 unclassified).

Fixed

• Preserve include=territory,subscriptionPricePoint and related fields[...] projections across initial and continuation requests in subscriptions_list_retention_offer_prices, and bind all 6 retention list handlers to HTTPClient.getPage with PaginationScope validation.
• Allow Plane 2 CJK Unified Ideographs Extension B+ characters (such as 𠮷 U+20BB7) in metadata and retention copy validation while rejecting single and compound emoji sequences (U+FE0F, U+20E3).
• Route JWTService debug token diagnostics to stderr so debug builds preserve a clean JSON-RPC stdout stream.

Compatibility

• Preserve all 514 existing tool names and 36 --workers filter keys; the complete catalog now has 537 tools.