Summary

Audit and update README examples and compatibility docs so they match actual per-backend Preview1 behavior.

Parent tracking issue: #15
Suggested implementation order: 39 / 39

Suggested dependencies

• Document a per-runtime WASI Preview1 support matrix #53 Document a per-runtime WASI Preview1 support matrix

References

• https://github.com/WebAssembly/WASI/blob/wasi-0.1/preview1/docs.md#L1282
• https://github.com/WebAssembly/WASI/blob/wasi-0.1/preview1/witx/wasi_snapshot_preview1.witx#L8

Acceptance criteria

• README examples and compatibility docs match actual runtime behavior.
• No remaining package-level wording implies full Preview1 support unless that is true.