pg: use RawStmt.Loc for text boundaries and fix Split edge cases #6

	name: CI

	on:
	push:
	branches: [main]
	pull_request:
	branches: [main]

	jobs:
	build-and-test:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	go-version: ['1.25']
	steps:
	- uses: actions/checkout@v4

	- uses: actions/setup-go@v5
	with:
	go-version: ${{ matrix.go-version }}

	- name: Check generated code is up to date
	run: \|
	go generate ./pg/ast/...
	git diff --exit-code pg/ast/walk_generated.go

	- name: Build
	run: go build ./...

	- name: Test
	run: go test ./...

Provide feedback