Nomad changes

docs/snippets/r/config/pdf_hierarchy_config.md

@@ -0,0 +1,19 @@
+```r title="R"
+library(kreuzberg)
+
+config <- list(
+  pdf_options = list(
+    extract_metadata = TRUE,
+    hierarchy = list(
+      enabled = TRUE,
+      k_clusters = 6L,
+      include_bbox = TRUE,
+      ocr_coverage_threshold = 0.8
+    )
+  )
+)
+
+json <- extract_file_sync("document.pdf", "application/pdf", config)
+result <- jsonlite::fromJSON(json, simplifyVector = FALSE)
+cat(sprintf("Pages: %d\n", length(result$pages)))
+```