Replaces 14 CI workflows with a single ci-orchestrator.yml that runs
jobs in a 4-tier waterfall. Tiers gate each other sequentially: if
formatting fails in 2 minutes, nothing else runs.
Every job carried over from the old workflows was optimized along the
way. Jobs use native container: blocks instead of the old
addnab/docker-run-action wrapper, cache scopes were split and tuned
(hit rates went from ~48% to 99%+), SITL tests run at 20x speed on
8cpu runners, clang-tidy got a dedicated 16cpu runner and cache, the
failsafe sim caches its emsdk, and flash analysis posts sticky PR
comments.
Forks can use this without AWS infrastructure. Copy
.github/ci-config.yml.example to .github/ci-config.yml to customize
runner labels, job toggles, and cache sizes. Alternatively, rename
.github/workflows/ci-simple.yml.example to ci-simple.yml for a
single-job workflow that finishes in under 15 minutes on ubuntu-latest.
Signed-off-by: Ramon Roche <mrpollo@gmail.com>
885af949cb