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Following the host-call/host-new precedent, audit the remaining natives
that pass user-supplied values into native JS, and unwrap value handles
({_type, __sx_handle}) at the boundary. Patterns:
host-global arg[0] → string name for globalThis lookup
host-get arg[1] → property key
host-set! arg[1] → property key
arg[2] → value being stored
host-call arg[1] → method name (was missing in initial fix)
args... → method arguments
host-call-fn argList items → function call arguments
(was sxToJs; now also unwraps atoms)
host-new arg[0] → constructor name
args... → constructor arguments
host-make-js-thrower arg[0] → value to throw (must be primitive in JS)
host-typeof arg[0] → recognize wrapped handles and report their
underlying type instead of "object"
host-iter? arg[0] → object to test for [Symbol.iterator]
host-to-list arg[0] → object to spread
host-new-function args → param-name strings and body string
All wraps are forward-compatible: _unwrapHandle is a no-op on plain values
returned by the legacy kernel. The shim activates only when the runtime
encounters real wrapped handles from the new kernel.
Verification — 100 tests pass on the new WASM after sweep (test 27
'can append a value to a set' previously broken by Set value-handle
aliasing now resolves correctly).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>