CI now detects which paths changed and skips irrelevant jobs:
- Platform (Go): only runs when platform/** changes
- Canvas (Next.js): only runs when canvas/** changes
- Python Lint: only runs when workspace-template/** changes
- Shellcheck: only runs when tests/e2e/** or scripts/** change
- E2E API: only runs when platform/** or tests/e2e/** change
Docs-only PRs (*.md, docs/**) skip all 5 jobs, saving ~15 min of
runner time per PR. Uses dorny/paths-filter for the CI workflow and
native paths: filter for the E2E workflow.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Job-level `concurrency.cancel-in-progress: false` only prevents sibling jobs
from killing each other — it does not protect the parent workflow run from
being cancelled when a new push arrives. Every PR push was cancelling the
in-progress E2E run, forcing manual `gh run rerun` across 7+ active PRs.
Fix: move e2e-api into `.github/workflows/e2e-api.yml` with a workflow-level
concurrency group (`e2e-api-${{ github.ref }}`, cancel-in-progress: false).
New pushes now queue behind the running E2E job instead of cancelling it.
Fast jobs (platform-build, canvas-build, shellcheck, python-lint) stay in
ci.yml and retain normal run-level cancellation for quick iteration feedback.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
