7.0.0

Changed

• Adopted Swift 6 language mode
• Bumped swift-tools-version to 6.3 (requires Xcode 26+)
• Annotated data sources, cell/header-footer provider closures, and Action typealiases with @MainActor to match UIKit's main-actor isolation

Breaking

• Public API now enforces main-actor isolation. Consumers calling from non-main contexts will need to add await MainActor.run { ... } or annotate call sites accordingly.