Wire Firebase Web config and VAPID through build-args/dart-define,
populate firebase-messaging-sw.js at image build, and soft-fallback to
install: tokens when secrets are absent. Live accept still needs Master
.env FIREBASE_* values and a web rebuild.
Co-authored-by: okuma <o0kuma@users.noreply.github.com>
Align manifest/theme with AppTheme, harden nginx cache for SW entry,
add offline banner, expand tester-guide web tips, and ship
scripts/e2e_web_smoke.sh. W4 Web Push remains blocked on Master VAPID.
Co-authored-by: okuma <o0kuma@users.noreply.github.com>
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