Swift Concurrency Expert

Overview

Review and fix Swift Concurrency issues in Swift 6.2+ codebases by applying actor isolation, Sendable safety, and modern concurrency patterns with minimal behavior changes.

Workflow

1. Triage the issue

• Capture the exact compiler diagnostics and the offending symbol(s)
• Check project concurrency settings: Swift language version (6.2+), strict concurrency level
• Check if approachable concurrency (default actor isolation / main-actor-by-default) is enabled
• Identify the current actor context (@MainActor, actor, nonisolated)
• Confirm whether the code is UI-bound or intended to run off the main actor

2. Apply the smallest safe fix

Prefer edits that preserve existing behavior while satisfying data-race safety.