fix: 旧BBR配置自动升级为完整TCP调优

ss-rust.sh

@@ -391,9 +391,12 @@ setup_bbr() {
     # 检测是否已启用
     local cc=$(sysctl -n net.ipv4.tcp_congestion_control 2>/dev/null)
     local qd=$(sysctl -n net.core.default_qdisc 2>/dev/null)
+    if [[ "$cc" == "bbr" && "$qd" == "fq" ]] && grep -q "TCP Tuning" /etc/sysctl.conf 2>/dev/null; then
+        info "BBR + TCP 完整调优已启用，无需重复配置"
+        return 0
+    fi
     if [[ "$cc" == "bbr" && "$qd" == "fq" ]]; then
-        info "BBR 已启用 (congestion=$cc, qdisc=$qd)"
-        grep -q "BBR Blast" /etc/sysctl.conf 2>/dev/null && info "BBR Blast 配置已存在" && return 0
+        info "检测到 BBR 已启用，升级为完整 TCP 调优..."
     fi
 
     # 检测系统