One-shot prettier pass so the new format:check gate starts from a clean
baseline. Formatting only — no behaviour change. Generator-owned and
vendored artifacts stay untouched via .prettierignore.
The app-wide service-worker work routes the fallback literal through a
`@sw-version-fallback` block-comment anchor that the prebuild generator
keys on, placed between the `||` and the literal. The pre-existing
fallback-shape assertion predates the marker and matched only the inline
form, so it failed on the marker comment. Widen the pattern to allow the
optional anchor while still pinning that a reachable "v" literal exists.
Marc-André Bombeck