feat(labs): PDF upload, text extraction, LLM draft pipeline

server/src/lib/pdf.ts

@@ -0,0 +1,7 @@
+import { extractText, getDocumentProxy } from "unpdf";
+
+export async function pdfToText(data: Uint8Array): Promise<string> {
+  const doc = await getDocumentProxy(data);
+  const { text } = await extractText(doc, { mergePages: true });
+  return text;
+}