docs: reflect review fixes (archive default, helper error semantics, TLS warning)
docs: convert blockquote notes/warnings to GitHub alert syntax > **Note:** / > **Warning:** etc. replaced by [!NOTE]/[!WARNING]/ > [!CAUTION] alerts across all API pages; style guide updated to > document the pattern.
docs(datafeeds): Data Feeds API - predicate feeds, stats, content Documents the complete DataFeedApi wrapper including the access-lockout trap (empty filter groups + X_509 locks everyone out), the GET-with-body polygon endpoint and the build_predicate_feed helper.