Update requirements.txt

requirements.txt

@@ -1,15 +1,17 @@
-# --- Stable Maintenance Stack (No code changes required) ---
+# --- Core Stable Stack ---
 langchain==0.3.1
 langchain-community==0.3.1
 langchain-core==0.3.6
 langchain-huggingface==0.1.0
 langchain-text-splitters==0.3.0
 
-# --- Vector DB & PDF Support ---
+# --- THE FIX for "bool is not iterable" ---
+pydantic==2.10.6
+pydantic-settings==2.4.0
+
+# --- Dependencies ---
 chromadb==0.5.5
 pypdf==4.2.0
 sentence-transformers==3.0.1
-
-# --- Interface ---
 gradio==5.1.0
-huggingface-hub==0.28.0
+huggingface-hub==0.30.0