v0.15.1
Bugfix: a collection deployed to a subdomain now renders its root page with the collection's own index template (e.g. the data-driven Trust Center hub) instead of the generic site index.
Subdomain hubs render the collection's index template
When a collection set subdomain = "x", its root page (x.example.com/) was generated with the generic site index template instead of the collection's own index template. For the bundled Trust Center this meant the data-driven hub (cert grid, subprocessor table, FAQ from trust-index.html) did not render on a subdomain — you got a plain listing with the bare site title.
The subdomain root now renders exactly like the collection's index page on the main domain: the same index template (e.g. trust-index.html, docs-index.html) and the same context (collections, data.*, t.*, items, nav), emitted to dist-subdomains/<name>/index.html and, per language, dist-subdomains/<name>/<lang>/index.html.
Main-domain behavior is unchanged, and collections that use a plain listing index keep working — each subdomain root uses whatever index template that collection would use on the main domain.