## Summary
- add threadless `wasm32-wasip1` builds and generated loaders for parser, minify, transform, transform-react, and transform-relay
- use the threadless bindings for browser and Cloudflare Workers while preserving threaded WASI and WebContainer fallbacks
- build and publish the new target in CI and release workflows
Closes#25271
## Testing
- native NAPI builds and package tests: 1,091 passed
- parser Chromium browser tests passed
- local workerd smoke tests passed for all five packages
- deployed Workers using local package tarballs passed for all five packages and reported `wasm32-wasip1`
- packed main-package file lists match the published `0.150.0` packages
- `just fmt`, `just check`, `just lint`, `just doc`, `just ast`, targeted Oxlint, typos, and `git diff --check` passed
- `just ready` reaches three unrelated Oxlint ANSI-color snapshot mismatches in this non-interactive environment; no pending snapshots remain
## AI assistance
Codex was used to help implement and test this change. The contributor remains responsible for reviewing and understanding the changes before merge.
Move all build scripts in `napi` packages into a `scripts` dir. These packages don't have root directories with tons of files like `napi/parser` and `apps/oxlint` do, but IMO it's preferable to have a consistent directory structure in all NAPI packages.
Also, rename these scripts from `.mjs` to `.js`, since these packages are ESM.
Boshen