v2.2.0

Fixed

• Xcode 27 (Swift 6.4) build compatibility (#1034): Fixed multiple build failures introduced by Swift 6.4 / Xcode 27. AnyHashable's Sendable conformance is now explicitly unavailable in Swift 6.4, so AnyHashable as JSONValue casts no longer compile; replaced with explicit scalar type-matching helpers (with Bool checked before NSNumber to preserve round-trip fidelity). Fixed a duplicate runtime type descriptor crash caused by multiple test targets statically linking the same SPM products; all Apollo package products are now linked exclusively through a single apolloWrapper target. Fixed WebSocketConnection.send() silently discarding errors by cancelling the underlying task on failure so the transport's reconnection state machine runs correctly. Also fixed \x22 escapes in composed Swift Regexes and AsyncResultObserver.handler @Sendable conformance under Swift 6.4. Thank you to the community members who submitted PRs identifying these issues.
• Fix WebSocketTransport retain cycle in receive loop (#1011): The WebSocketTransport actor was never deallocated after a connection was established because the unstructured Task in startConnectionReceiveLoop() captured self strongly. The receive loop now uses [weak self] and deinit explicitly closes the connection so the transport deallocates correctly when all external references are dropped. Thank you to @heltoft for the contribution.
• Fix crash in SelectionSet equality for nullable-inner object lists (#986): Comparing two SelectionSet values containing a [Object?] (non-null list, nullable element) field where any element was null triggered a preconditionFailure("Expected list data to contain objects."). Added a [DataDict?] branch in convertElements that handles the mixed DataDict + NSNull case and preserves null positions so position-sensitive equality remains correct. Thank you to @dfed for the contribution.