Kotlin Skill

Kotlin coroutine patterns and testing: structured concurrency, Flow, StateFlow/SharedFlow, Channels, dispatchers, JUnit 5, Kotest, MockK, and coroutine test dispatchers.

Reference Loading Table

Signal	Reference	Size
concurrency, scopes, cancellation, dispatchers, exception handling	references/concurrency-patterns.md	~130 lines
Flow, StateFlow, SharedFlow, operators, flow builders	references/flow-patterns.md	~120 lines
Channels, producer-consumer, fan-in, fan-out	references/channel-patterns.md	~100 lines
GlobalScope, unstructured launch, CancellationException, failure modes	references/preferred-patterns.md	~80 lines
coroutine skill overview, structured concurrency principles	references/kotlin-coroutines.md	~55 lines
JUnit 5, Kotest, MockK, runTest, parameterized tests, assertions	references/kotlin-testing.md	~290 lines

Loading rule. Read the references whose signals match the task before responding.