trailingSlash='always' caused [...slug] rest-param to capture with
trailing slash. normalizePageSlug/normalizePostSlug only stripped
leading slash, so fallback match failed and pages 404'd.
Strip both leading and trailing slashes; normalize once at entry of
getPageBySlug/getPostBySlug.
- Set trailingSlash='always' globally via root layout.
- Update postHref, pageHref, Pagination, tag/breadcrumb hrefs, blog→posts
redirects to emit trailing slash.
- Match old Astro canonical so indexed URLs hit 200 directly instead of
308-redirect.
Peter Meier
admin