docs: the filing rule — where engine vs product work gets filed #4

	name: canvas build

	on:
	workflow_dispatch:
	push:
	branches:
	- main
	pull_request:
	paths:
	- ".github/workflows/**"
	- "crates/**"

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout repository
	uses: actions/checkout@v4
	with:
	submodules: recursive

	- name: Setup pnpm
	uses: pnpm/action-setup@v4

	- name: Setup Node.js
	uses: actions/setup-node@v4
	with:
	node-version-file: .nvmrc
	cache: pnpm

	- name: Install system dependencies
	run: \|
	sudo apt-get update
	sudo apt-get install -y \
	build-essential \
	cmake \
	ninja-build \
	just

	- name: Setup Rust toolchain
	uses: dtolnay/rust-toolchain@stable
	with:
	toolchain: 1.92.0

	- name: Add wasm32-unknown-emscripten target
	run: rustup target add wasm32-unknown-emscripten

	- name: Cache cargo build outputs
	uses: Swatinem/rust-cache@v2
	with:
	key: wasm32-unknown-emscripten

	# Minimal Node island: workspace = the canvas-wasm npm half + reftest
	# tooling. (The cross-repo TS suites were retired at the engine split;
	# the remaining smoke test is self-contained.)
	- name: Install dependencies
	run: pnpm install --frozen-lockfile

	- name: Install Emscripten SDK
	run: python3 bin/activate-emsdk

	- name: Fix missing xlocale.h header for Emscripten
	run: \|
	sudo ln -s /usr/include/locale.h /usr/include/xlocale.h

	- name: Build canvas wasm artifacts
	run: just build
	working-directory: crates/grida-canvas-wasm

	- name: Run canvas wasm smoke test
	run: pnpm --filter @grida/canvas-wasm test

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