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alexandru

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• 14 skills
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• 5 hours ago last updated

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   Simplify · alexandru bundle

   Simplifies and refines code for clarity, consistency, and maintainability while preserving all functionality. Use when refining recently modified code unless instructed otherwise.
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   Code Review · alexandru

   Reviews code changes for bugs, structural problems, performance issues, and unintended behavior. Use when reviewing uncommitted changes, commits, branches, or pull requests.
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   Akka Streams · alexandru bundle

   Scala reactive streaming with Akka Streams and Pekko Streams. Use for dataflow and reactive programming patterns, testing stream components, and understanding when NOT to use streams (prefer plain functions for transformations and I/O).
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   Create Skill · alexandru

   Guide for creating effective agent skills. Use when users want to create a new skill (or update an existing skill) that extends agent capabilities with specialized knowledge, workflows, or tool integrations.
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   Arrow Resource · alexandru bundle

   Kotlin + Arrow Resource lifecycle discipline with `Resource`, `ResourceScope`, `resourceScope`, and context parameters. Use for safe acquisition/release of files, streams, DB pools/connections, HTTP clients, background scopes, or multipart parts; preventing resource leaks and use-after-close bugs; designing companion `Resource` builders; using `arrow-autoclose` when only synchronous `AutoCloseable` cleanup is possible; composing resources with typed errors, cancellation, or parallel acquisition.
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   Cats Effect Io · alexandru bundle

   Helps agents write and review Scala Cats Effect IO code. Use for suspending side effects and non-determinism in IO or F[_], choosing Sync/Async/Temporal/Concurrent/Clock/Random, handling blocking I/O, testing with TestControl, and composing resources, fibers, races, and structured concurrency safely.
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   Jspecify Nullness · alexandru bundle

   JSpecify nullness annotations for Java APIs and tooling. Use when adopting or migrating JSpecify annotations, designing null-safe Java signatures, fixing generic bounds and type-use placement, or interpreting Kotlin interop, annotation-processor, and tool-conformance behavior.
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   Arrow Typed Errors · alexandru bundle

   Models Kotlin logical failures with Arrow's context-parameter Raise DSL and wrappers such as Either, nullable, Option, and Ior. Use when implementing or simplifying typed-error flows, translating error types, replacing verbose Either handling, validating input with accumulation, or selecting an error wrapper.
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   Kotlin Java Library · alexandru bundle

   Helps agents design and review Kotlin library APIs for Java consumers. Use when building Kotlin code intended for Java callers, shaping JVM signatures with @JvmName, @JvmOverloads, @JvmStatic, @JvmField, @Throws, @JvmRecord, nullability, records, and backward/binary compatibility rules.
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    Cats Effect Resource · alexandru bundle

    Helps agents write and review Scala Cats Effect Resource code. Use for preventing resource leaks and use-after-release bugs, modeling disposable values with Resource, designing Resource-returning factories and constructor-injected services, wrapping Java AutoCloseable values, composing resources, and handling cancellation-safe release.
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    Cats Mtl Typed Errors · alexandru bundle

    Scala typed errors with Cats MTL Raise/Handle and allow/rescue. Use for designing custom domain error types without EitherT, while keeping Cats Effect and ecosystem composition. Covers Scala 2/3 syntax and IO-only or F[_] usage.
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    Compose State Hoisting · alexandru bundle

    Compose state management with a strong state-hoisting preference for Kotlin Compose (Android, Multiplatform, Compose for Web). Use for refactors or new UI that needs clear state ownership, unidirectional data flow, saved state decisions, or guidance on remember/retain/rememberSaveable/rememberSerializable, and for designing stateless composables with event callbacks.
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    Kotlin Context Parameters · alexandru bundle

    Kotlin context parameters (`context(...)`) for scoped dependencies, DSL scopes, and migrations from context receivers. Use when designing, reviewing, or refactoring Kotlin code that uses implicit contextual values.
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    Scala Kindlings Derivation · alexandru bundle

    Scala auto-derivation with Kindlings for Circe and PureConfig. Use when replacing circe-generic/circe-generic-extras or PureConfig generic derivation with Kindlings while keeping normal Circe JSON APIs and PureConfig loading/writing APIs.
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