testdata/fixture is the acceptance fixture: one block, one template, one
admin page, plus the two-line reactor boilerplate main. wasmhost_test.go
compiles it with GOOS=wasip1 GOARCH=wasm -buildmode=c-shared (15.7 MiB,
the WO-WZ-012 memory-budget baseline) and drives it through wazero
exactly per wasm-abi.md: _initialize as the start function, request
bytes through bn_alloc, DESCRIBE returning a decodable manifest,
same-instance block+template renders, a panicking BlockFunc surfacing as
ABI_ERROR_CODE_INTERNAL with the instance still callable, and a
non-bn_alloc request pointer rejected as DECODE.
wazero v1.12.0 joins go.mod as a test-only dependency (approved).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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