* ci: run Firefox and WebKit page workflows in parallel jobs
The viewerjs job ran the Chromium/touch coverage pass and then the
Firefox and WebKit page workflows serially on one runner. The suite
grew from 396 to 496 tests in #227 and the job passed its 25 minute
cap with every test green, which #227 papered over by raising the
budget to 40 minutes.
Split the workflow into a frontend-coverage job, a fail-fast: false
matrix with one runner per browser, and an aggregate viewerjs job that
needs both and fails unless each result is success. The aggregate keeps
the exact "viewerjs" context that branch protection requires, so
.github/branch-protection.json is unchanged. Browser projects, the
single Playwright worker and per-test timeouts are untouched. Coverage
keeps the frontend-test-reports artifact; Firefox and WebKit traces
move to browser-traces-<browser>.
Closes#228.
* ci: keep the frontend coverage job on a 25 minute budget
Merging main carried the 40 minute budget from #227 onto the new
frontend-coverage job. That job no longer runs the Firefox and WebKit
workflows and took 9m31s in run 39178111649 at 396 tests, so the
original 25 minute budget is the right one for all three jobs.
Vito
2aa39ca1a6