fix: replace target-cpu=native with x86-64 for server compatibility

Made-with: Cursor

Author: AIQnetLab

development/qnet-integration/Dockerfile.production

@@ -20,7 +20,7 @@ WORKDIR /build
 COPY . .
 
 # Build the specific binary with maximum optimization for production
-ENV RUSTFLAGS="-C target-cpu=native"
+ENV RUSTFLAGS="-C target-cpu=x86-64"
 ENV CARGO_NET_GIT_FETCH_WITH_CLI=true
 ENV CARGO_HTTP_MULTIPLEXING=false
 ENV CARGO_NET_RETRY=10