Summary

Teach the runtime to drive the Preview 3 draft async import/export ABI so component calls can suspend, resume, and complete across host boundaries.

Parent tracking issue: #70
Suggested implementation order: 3 / 14

References

• https://github.com/WebAssembly/WASI/blob/main/docs/Preview2.md
• https://github.com/WebAssembly/component-model/blob/2e4800866d529aedc1b7730bc9452a4f85b97d8f/design/mvp/CanonicalABI.md
• https://github.com/WebAssembly/component-model/blob/2e4800866d529aedc1b7730bc9452a4f85b97d8f/design/mvp/Concurrency.md

Acceptance criteria

• Async imports can suspend and resume cleanly instead of being forced through synchronous call paths.
• Async exports can complete without deadlocking or violating the component-model draft ABI expectations.
• Tests cover host-to-component and component-to-host async round-trips on the supported runtimes.