switched ollama model, added script to add pdfs to the vector store, tuned RAG parameters

add_pdfs.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 """Add all PDFs under a folder to the RAG vector store. Run from project root."""
+import shutil
 from pathlib import Path
 
 from local_rag import LocalRAG
@@ -8,6 +9,10 @@ DATA_ROOT = Path("/Users/Philipp/Desktop/workspace/python/gpt_publikationen/data
 VECTORSTORE_PATH = "./vectorstore"
 
 if __name__ == "__main__":
+    if Path(VECTORSTORE_PATH).exists():
+        shutil.rmtree(VECTORSTORE_PATH)
+        print(f"Cleared existing vector store: {VECTORSTORE_PATH}")
+
     pdfs = sorted(p for p in DATA_ROOT.rglob("*") if p.suffix.lower() == ".pdf")
     print(f"Found {len(pdfs)} PDF(s) under {DATA_ROOT}")
     if not pdfs: