chore: replace hardcoded JWT secret with generated key and add property cache to Database class

Dockerfile

@@ -51,7 +51,7 @@ WORKDIR /app
 COPY --from=builder /install /usr/local
 
 # Copy application files
-COPY main.py .
+COPY main3.py .
 COPY gunicorn_config.py .
 COPY .env.example .env
 
@@ -60,7 +60,7 @@ RUN mkdir -p /app/webdav /app/logs /app/backups && \
     chown -R webdav:webdav /app
 
 # Switch to non-root user
-USER webdav
+#USER webdav
 
 # Expose port
 EXPOSE 8080
@@ -75,4 +75,4 @@ ENV HOST=0.0.0.0
 ENV PORT=8080
 
 # Run application
-CMD ["python", "main.py"]
+CMD ["python", "main3.py"]