web_fetch strips <script> tags during HTML→markdown conversion, which
silently discards JSON-LD schema blocks. Additionally, many CMS plugins
(AIOSEO, Yoast, RankMath) inject schema via client-side JavaScript,
making it invisible to both web_fetch and curl.
This has led to false audit findings in production (reporting 'zero
structured data' on sites with extensive schema implementation).
Adds a prominent warning in the Audit Framework section and a note
in the Tools section recommending browser rendering, Rich Results Test,
or Screaming Frog for accurate schema detection.
170af13f24