Fix requirements.txt path

requirements.txt

@@ -1,6 +1,25 @@
-# Hugging Face Spaces installs dependencies from the repository root.
-# Reuse the project's existing dependency list.
+# LangGraph & LangChain
+langgraph>=0.2.0
+langchain-google-genai>=2.0.0
+langchain-core>=0.3.0
+langsmith>=0.2.0
 
--r CodeWeaver/requirements.txt
+# Vector DB
+qdrant-client>=1.11.0
+
+# Search APIs
+tavily-python>=0.5.0
+requests>=2.31.0
+
+# Embeddings
+sentence-transformers>=3.0.0
+torch>=2.0.0
+
+# UI
+gradio==4.44.1
+
+# Utils
+python-dotenv>=1.0.0
+pydantic>=2.0.0