Add missing runtime deps: openai, tiktoken, sqlalchemy, pdfplumber, tavily-python

requirements.txt

@@ -19,6 +19,20 @@ sentence-transformers>=3.0,<4
 # this client version — build and serve on the SAME pin.
 qdrant-client>=1.15,<1.16
 
+# LLM / OpenAI (used directly, not just via langchain)
+# embeddings.py + llm_response_generator.py do `import openai`; embeddings.py also
+# needs tiktoken. These were installed in the dev env but never declared, so the HF
+# build (which installs ONLY from this file) crashed with ModuleNotFoundError: openai.
+openai>=2,<3
+tiktoken>=0.7
+
+# Pesticide-label backend (CDMS): SQLAlchemy models (src/cdms/schema.py) and PDF
+# text extraction (src/cdms/pdf_processor.py) are imported at startup; tavily-python
+# is lazy-imported by the web/ag tools at query time.
+SQLAlchemy>=2,<3
+pdfplumber>=0.11
+tavily-python>=0.5
+
 # API and HTTP
 requests>=2.32.0
 httpx>=0.28.0