HF RL Explorer

Add JSON‑LD metadata extraction

Add JSON‑LD metadata extraction: a task in LegoFlow-SWE (Harbor dataset). Pages that embed structured data via <script type="application/ld+json" blocks are not having that data captured by hister. We need a new extractor that parses those blocks and populates the document metadata with normalized…

The task

Pages that embed structured data via `<script type="application/ld+json">` blocks are not having that data captured by hister. We need a new extractor that parses those blocks and populates the document metadata with normalized schema.org fields.

Part of Lego-X/LegoFlow-SWE.