pdfium-render: Fonts

Registering, embedding, inspecting, and extracting fonts with pdfium-render. A font must be added to a document's PdfFonts collection before any text object can use it. This skill owns the font lifecycle. Creating the text objects that consume a font is pdfium-impl-page-objects-edit; reading page text is pdfium-syntax-text.

All API names below are verified against docs.rs/pdfium-render 0.9.1. The default target is the 0.9.x API; 0.8.x differences are flagged inline.