Summary

Implement fd_advise for the native and web Preview1 backends.

Parent tracking issue: #15
Suggested implementation order: 14 / 39

Suggested dependencies

• Expand fd_fdstat_get and fd_filestat_get metadata to better match WASI Preview1 #22 Expand fd_fdstat_get and fd_filestat_get metadata to better match WASI Preview1

References

• https://github.com/WebAssembly/WASI/blob/wasi-0.1/preview1/docs.md#L1452

Acceptance criteria

• fd_advise no longer returns ENOSYS on native and web, or explicitly documents narrowed support if needed.
• Tests cover successful handling or documented no-op behavior.