HTML::Template::Compiled::Plugin::I18N doesn't look straightforward at all, and would require me to use a different templating language (with yes, the same syntax, but I'm sure to run into problems).

Right, link is to give perspective

Template::Plugin::Filter::I18N is a broken link. Is it this?. If so, there's no documentation.

Well, thats a metacpan bug it seems. Template::Plugin::Filter::I18N works and yes the docs are succinct :)

I for got to give Catalyst::Plugin::I18N::Manual its more detailed much wider perspective, it links gettext/catalog tools like poedit