requirements.txt

streamlit>=1.35.0
pandas>=2.1.0
openpyxl>=3.1.2
faiss-cpu>=1.8.0
langchain>=0.2.0
langchain-community>=0.2.0
langchain-huggingface>=0.0.3
sentence-transformers>=3.0.0
plotly>=5.22.0                   # All charts (bar, pie, heatmap, scatter, line)
huggingface-hub>=0.23.0
python-docx>=1.1.0
pypdf>=4.2.0
matplotlib>=3.8.0
plotly>=5.22.0
python-dotenv>=1.0.0
numpy>=1.26.0
datasets>=2.20.0,<4.0.0          # used by TTSEngine for CMU Arctic xvectors
accelerate>=0.30.0,<1.0.0        # optional speed-up for transformers on CPU
# gTTS — network fallback TTS (no GPU required)
gTTS>=2.5.0,<3.0.0

# ── Text-to-Speech ────────────────────────────────────────────────────────────
# SpeechT5 is loaded via transformers (already listed above)
soundfile>=0.12.1,<1.0.0         # WAV encode/decode
sentencepiece
scipy>=1.13.0,<2.0.0             # audio signal utilities

psycopg2-binary>=2.9.0