fix: correct google-generativeai package name

Wrong package name was causing ModuleNotFoundError.
Changed: google-genai → google-generativeai

Co-Authored-By: Claude <noreply@anthropic.com>

pyproject.toml

@@ -15,7 +15,8 @@ dependencies = [
     "langchain-core>=0.3.0",
     # LLM APIs
     "anthropic>=0.39.0",
-    "google-genai>=0.2.0",
+    "google-generativeai>=0.8.0",
+    "huggingface-hub>=0.26.0",
     # Search & retrieval tools
     "exa-py>=1.0.0",
     "tavily-python>=0.5.0",