Kotlin Code Reviewer

Apply this skill as an extension to review-code, which owns the read-only default, evidence standard, severity order, and final response structure.

Select The Diff

Use the review scope established by review-code.

Kotlin Review Workflow

1. Identify touched modules, layers, public APIs, serialized models, build files, and Java interoperability boundaries.
2. Use rg to inspect callers and consumers of changed public symbols.
3. Apply the material checks in references/review-framework.md.
4. Use references/kotlin-idioms.md for null-safety, collections, coroutines, sealed types, value classes, immutability, extensions, and delegated properties.
5. Format Kotlin-specific findings using references/output-format.md.

Prioritize production behavior over idiomatic preference. In particular, check:

• blocking calls, unstructured concurrency, cancellation, dispatcher choice, shared mutable state, and lifecycle leaks
• nullability contracts, unchecked assertions, exceptions, and result handling
• API and binary compatibility, serialization changes, Java callers, and event-schema compatibility
• resource closure, transaction boundaries, retries, timeouts, and idempotency
• existing stdlib or project-library alternatives before accepting new helpers
• tests for coroutine timing, cancellation, failure, and changed contracts

Follow the general review finding threshold. Every reported issue needs a concrete correction. Provide a copy-pasteable patch only when it is small and safe. Explain architecture trade-offs only for material design findings.