feat: optimize Dockerfile for HuggingFace Spaces deployment

Dockerfile

@@ -63,7 +63,7 @@ COPY api/ api/
 WORKDIR /app/api
 
 # Install poetry and dependencies
-RUN pip install --no-cache-dir poetry==1.8.3 gunicorn gevent && \
+RUN pip install --no-cache-dir poetry==1.8.3 gunicorn gevent pydantic-settings && \
     poetry config virtualenvs.create false && \
     poetry install --no-dev --no-interaction --no-ansi
 
@@ -80,7 +80,7 @@ RUN useradd -m -u 1000 user && \
 # Install runtime dependencies
 RUN apt-get install -y --no-install-recommends \
     nodejs npm libgmp-dev libmpfr-dev libmpc-dev && \
-    pip install --no-cache-dir gunicorn gevent nltk && \
+    pip install --no-cache-dir gunicorn gevent nltk pydantic-settings && \
     python -m nltk.downloader punkt averaged_perceptron_tagger
 
 # Set up directory structure