Nomad changes

docs/snippets/r/plugins/pdf_only_processor.md

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+<!-- snippet:syntax-only -->
+
+```r title="R"
+library(kreuzberg)
+
+pdf_only_processor <- function(result) {
+  # Gate the processor so it only runs for PDF documents.
+  if (is.null(result$mime_type) || result$mime_type != "application/pdf") {
+    return(result)
+  }
+  return(result)
+}
+
+register_post_processor("pdf_only", pdf_only_processor)
+
+config <- list(postprocessor = list(enabled = TRUE))
+json <- extract_file_sync("document.pdf", "application/pdf", config)
+result <- jsonlite::fromJSON(json, simplifyVector = FALSE)
+
+cat(sprintf("Processed PDF: %d characters\n", nchar(result$content)))
+```