kelvinkosbab

Reviews Core Data code for Swift 6 strict concurrency compliance, modern context usage, and SPM compatibility. Use when reading, writing, or reviewing Core Data code under Swift 6.

Reviews and improves Swift documentation comments (DocC) for correctness, completeness, and clarity. Use when writing or reviewing public API documentation in Swift packages.

Reviews Swift error handling for modern patterns including typed throws, Result vs throws, LocalizedError conformance, and async error propagation. Use when writing or reviewing Swift error types and throwing functions.

Reviews Swift logging code using os.Logger for correct privacy markers, subsystem/category conventions, and appropriate log levels. Use when writing or reviewing logging code.

Reviews Swift Package Manager libraries for public API design, module organization, dependency hygiene, and modern SPM features. Use when reading, writing, or reviewing Swift packages.

Deep-reviews Jetpack Compose code for recomposition stability, side-effect correctness, lazy-list performance, and state modeling. Use when reading, writing, or reviewing non-trivial Compose UI — especially when chasing jank, runaway recomposition, or effect bugs.

Deep-reviews Kotlin coroutines and Flow code for structured-concurrency correctness — scope and dispatcher discipline, cooperative cancellation, exception propagation, hot/cold flow patterns, and coroutine testing. Use when reading, writing, or reviewing concurrency-heavy Kotlin/Android code.

Reviews multi-module Android Gradle builds against the Now in Android convention-plugin pattern — `build-logic/convention/` factoring, version-catalog discipline, AGP/Kotlin/Compose-compiler co-versioning, KSP over kapt. Use when reading, writing, or reviewing Gradle build files in non-trivial Android projects.

Reviews Android R8 / ProGuard configuration for code-shrinking, optimization, and obfuscation. Covers `-keep` rule discipline, library `consumer-rules.pro` discipline, common reflection-using library rules (Moshi, Room, Hilt, Retrofit, Glide), mapping-file workflow, debugging release-build crashes. Use when reading, writing, or reviewing ProGuard/R8 configuration files.

Reviews and assists migration from XML layouts + Fragments to Jetpack Compose. Covers incremental interop (AndroidView / ComposeView), layout translation (ConstraintLayout / LinearLayout / FrameLayout → Modifier), RecyclerView → LazyColumn with keys, Fragment → Composable, Navigation Component → Navigation-Compose, ViewModel bridging, and XML themes → MaterialTheme.