requirements.txt

# ---------- Core UI ----------
streamlit==1.36.*
pydantic==2.7.*
python-dotenv==1.0.*
pandas==2.2.*
numpy==1.26.*          # safer with faiss-cpu wheels on Spaces
playwright[chromium]>=1.45


# ---------- RAG / Search ----------
faiss-cpu==1.8.0
sentence-transformers==3.0.*   # requires torch>=2; see below
requests==2.32.*
PyYAML==6.0.*
tqdm==4.66.*

# ---------- HTML / PDF parsing (adds bs4 fallbacks) ----------
beautifulsoup4==4.12.*
html5lib==1.1           # pure-Python parser fallback (no system libs)
lxml==4.9.*             # optional: faster; our code falls back if missing
pdfminer.six==20231228  # PDF text extraction

# ---------- Optional ML stack (needed for s-transformers 3.x) ----------
torch==2.2.*            # CPU wheels available on Spaces
transformers==4.41.*    # modern, compatible with s-transformers 3.x
accelerate==0.30.*      # optional, safe pin

# ---------- Financial / Viz (unchanged, pinned) ----------
yfinance==0.2.*
plotly==5.22.*          # any 5.x works; pin to recent
matplotlib==3.8.*       # modern, but not bleeding-edge

# ---------- (Optional) Chronos time-series ----------
# NOTE: This adds heavy deps and longer build times.
# Keep commented unless you actually use Chronos in the Space.
# git+https://github.com/amazon-science/chronos-forecasting.git