Add Async, Streams, and Futures concepts page#351
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Add a new design/async.md introducing the Canonical ABI primitives (`async func`, `stream<T>`, `future<T>`) that the Component Model added for the WASI P3 release. The page covers the sandwich problem (why native async matters for composition), each primitive with a worked WIT example, the stream-plus-future and write-direction-flip patterns, and a tooling-support pointer. Hook the page into Component Model Concepts as a new subsection after Packages, and add the SUMMARY.md entry under that umbrella. Signed-off-by: Eric Gregory <eric@cosmonic.com>
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Closing in favor of #352, which now bundles this page with the Migrating from WASI P2 to WASI P3 guide. The two pages cross-reference each other and form a coherent piece of P3 conceptual content; bundling avoids stack-management overhead and guarantees the cross-links land together. |
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Adds a new
design/async.mdintroducing the Canonical ABI primitives (async func,stream<T>,future<T>) that the Component Model added for WASI P3, covering the sandwich problem, each primitive with a WIT example, the stream-plus-future and write-direction-flip patterns, and tooling pointers; hooks it into Component Model Concepts as a new subsection after Packages.