The legacy templates/pongo host runtime now uses the in-house ninjatpl
fork. Mechanical import/ident swap — these files only use NewSet /
TemplateLoader / Context / Must / Template, all identical in ninjatpl;
no custom filters/tags or *Error signatures involved.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Decouple TemplateFunc from templ.Component by introducing a generic
HTMLComponent interface that both templ and pongo2 satisfy via Go
structural typing. Add a complete pongo2 rendering engine in
templates/pongo/ with page templates, block templates (with BlockContext
injection and icon processing), template overrides, and email wrappers.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
