Upgrade to 1.0.26

Concerns: pushword/static-generator.

Static exports retain the published homepage

pw:static now fails if a full build would remove an existing index.html or a worker cannot load every assigned page. If deleting the homepage is intentional, remove the old index.html from the host’s static_dir first.

Sites whose homepage becomes a redirect (e.g. / → /en/). It generates no index.html, so every full build fails until you delete the old one by hand.