[opt] Add struct-packing pass and unit test. #72

	name: Wasm Build
	permissions:
	contents: read

	on: [push, pull_request]

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
	with:
	fetch-depth: '0'
	- name: Build web
	run: docker compose -f source/wasm/docker-compose.yml --project-directory . up
	- name: Run tests
	run: node test/wasm/test.js

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