feat: enable unbuffered Python output in Docker by setting PYTHONUNBUFFERED=1

Author: tosaki

Dockerfile

@@ -5,6 +5,7 @@ WORKDIR /app
 
 # Enable bytecode compilation
 ENV UV_COMPILE_BYTECODE=1
+ENV PYTHONUNBUFFERED=1
 
 # Copy from the cache instead of linking since it's a mounted volume
 ENV UV_LINK_MODE=copy