Linear ticket: https://linear.app/getsentry/issue/JS-1878

Depends on: #19677 (build output caching)
Parent: #19671

Goal

Extract server-side integration test jobs from build.yml into an independent ci-integration-tests.yml workflow. This includes:

• job_node_integration_tests (×4 Node versions + optional TS 3.8)
• job_node_core_integration_tests (×4 Node versions + optional TS 3.8)
• job_cloudflare_integration_tests
• job_remix_integration_tests (×4 Node versions)

New workflow: ci-integration-tests.yml

name: 'CI: Integration Tests'
on:
  push:
    branches: [develop, master, v9, v8, release/**]
  pull_request:
  merge_group:
    types: [checks_requested]
  workflow_dispatch:

Jobs

1. restore_build — uses .github/actions/restore-build (from CI: Build output caching + cross-workflow restore-cache action #19677)
2. node_integration_tests — matrix: Node 18/20/22/24, optional TS 3.8 on Node 24
3. node_core_integration_tests — matrix: Node 18/20/22/24, optional TS 3.8 on Node 24
4. cloudflare_integration_tests — single job
5. remix_integration_tests — matrix: Node 18/20/22/24 with Playwright
6. integration_tests_gate — gate job named Integration Tests Passed

Conditional execution

Current jobs use changed_node_integration, changed_node_core_integration, changed_remix flags. This workflow needs the same detection — either inline or call reusable-metadata.yml.

Transition steps

1. Create ci-integration-tests.yml. Integration tests run in both build.yml and ci-integration-tests.yml (dual-running).
2. Verify stability over several days/PRs.
3. Ruleset change (requires admin): Add Integration Tests Passed as required status check to all 4 rulesets.
4. Remove integration test jobs from build.yml and from job_required_jobs_passed needs list.

Concurrency

concurrency:
  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
  cancel-in-progress: true