fix bad supabase version + add build deps

Dockerfile

@@ -1,6 +1,12 @@
 FROM python:3.11-slim
+
+# install faiss dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    && rm -rf /var/lib/apt/lists/*
+
 WORKDIR /code
 COPY requirements.txt .
-RUN pip install -r requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt
 COPY . .
 CMD ["gunicorn", "app:app", "-b", "0.0.0.0:7860"]

requirements.txt

@@ -1,3 +1,4 @@
+# requirements.txt
 flask==3.0.2
 langchain==0.3.0
 langchain-community==0.3.0
@@ -5,6 +6,6 @@ langchain-huggingface==0.3.0
 sentence-transformers==3.0.0
 faiss-cpu==1.8.0
 datasets==2.20.0
-supabase==2.6.1
+supabase==2.6.0          # ← real version
 python-dotenv==1.0.1
 gunicorn==22.0.0