Ashley's upstream .github/workflows/ci.yml targets GitHub-hosted
ubuntu-latest/windows-latest/macos-latest runners, which aren't
registered on git.opensourcesolarpunk.com for non-org repos - every
matrix job on eva/focus-flow's PR #18 shows "Has been cancelled"
rather than a real pass/fail. This adds a Forgejo-native workflow at
.forgejo/workflows/ci.yml using ubuntu-latest only, matching the
pattern already proven working for circuitforge-core/peregrine/kiwi
on this instance. Also runs the Flutter app's own analyze/test/format,
which the upstream workflow (root dart workspace test.dart only)
never covered.
Closes: Circuit-Forge/focus-flow#9
