Winner's Dev Notes

Measure serialized JSON in UTF-8 bytes, reject oversized request bodies, and send the exact validated bytes with fetch instead of counting string length.

Preserve literal plus signs and repeated query parameters with URLSearchParams, avoid double encoding, and test query values through a serialize-parse round trip.

Preserve unsigned 64-bit player IDs across JSON APIs with decimal strings, explicit boundary validation, and safe conversion when BigInt is needed.

Process asynchronous JavaScript batches with a fixed concurrency limit, preserve input order, and stop scheduling new work after a failure.

Keep browser search results in sync with the latest input using AbortController, request IDs, response validation, and cleanup when the view closes.

Build a production-ready WebSocket client for Cocos Creator with a connection state machine, exponential backoff, heartbeat timeout, queued messages and safe foreground reconnection.

A real-world App Store review case covering Guideline 4.8 login services, 4.3(a) spam rejection, Guideline 5.1.2(i), ATT permission issues, and the fixes that eventually passed review.

Fix an Xcode Archive that keeps using the wrong build number by configuring CFBundleVersion and CURRENT_PROJECT_VERSION correctly.

Fix Xcode linker errors involving swiftCompatibility51, swiftCompatibility56 and swiftCompatibilityConcurrency, including the library swiftCompatibility51 not found error.

Learn how to install an Android App Bundle by converting an AAB to APKS or a universal APK with bundletool and installing it through ADB.