Replace existing CI files with a consolidated one to delay starting
resource intensive CI jobs until after less resource intensive ones have
completed: e.g. don't start integration tests if the basic build tests
fail.
Architecture:
- Trigger on [pull_request, merge_group]; concurrency keyed per PR/ref.
- preflight job classifies changed paths and exposes a 'full' flag that
gates the heavier build/quality/integration suite. Any CI change
classifies itself as full so it is exercised.
- Leaf jobs gate at the job level using preflight outputs; doc-only,
openapi-only, dockerfile-only and similar PRs skip the full suite.
- integration-x86-64-pr runs the (garm-jammy, gnu) slice on PR and MQ;
integration-x86-64-mq runs the other 3 matrix entries on MQ only.
- integration-{arm64, vfio, windows, rate-limiter} are MQ-only.
- integration jobs gate on dco/quality/build success.
- A single all-green aggregator job is the only required-status check;
it folds in every leaf job via `needs`.
Assisted-by: Claude:Opus-4.7
Signed-off-by: Rob Bradford <rbradford@meta.com>
