feat(core): add Swift tree-sitter support #496

	name: CI

	on:
	# Run on every PR so a contributor's first push gets feedback.
	pull_request:
	# Also run on direct pushes to main so the "main is green" signal is real.
	# Without this, main can silently break for days when someone bypasses
	# review. (#249)
	push:
	branches: [main]

	# Cancel any in-flight CI for the same ref when a new commit is pushed —
	# saves runner minutes and keeps the latest commit's status the only one
	# anyone reads. `github.ref` is a controlled value (refs/heads/* or
	# refs/pull/*/merge), not user-controlled input, so it's safe to interpolate.
	concurrency:
	group: ci-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	ci:
	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu-latest, windows-latest]
	runs-on: ${{ matrix.os }}
	steps:
	- uses: actions/checkout@v4

	- uses: pnpm/action-setup@v4

	- uses: actions/setup-python@v5
	with:
	python-version: '3.x'

	- uses: actions/setup-node@v4
	with:
	node-version: 22
	cache: pnpm
	cache-dependency-path: pnpm-lock.yaml

	- name: Install dependencies
	run: pnpm install

	- name: Lint
	run: pnpm lint

	- name: Build core
	run: pnpm --filter @understand-anything/core build

	- name: Build skill
	run: pnpm --filter @understand-anything/skill build

	- name: Test core
	run: pnpm --filter @understand-anything/core test

	- name: Test skill
	run: pnpm test

	- name: Test Python skill helpers
	run: python -m unittest tests.skill.understand.test_merge_batch_graphs -v

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