feat: cellular-proxy 一键安装 — 走代理一律数据出口

- sing-box 单进程 bind 数据网卡
- mixed HTTP+SOCKS + 中文静态面板
- install.sh 支持 curl | sudo bash
- 512MB 友好 MemoryMax 默认 96MB

scripts/detect.sh

@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+set -euo pipefail
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+# shellcheck source=lib.sh
+source "$ROOT_DIR/scripts/lib.sh"
+if [[ -f "$ROOT_DIR/config/settings.conf" ]]; then
+  load_config
+else
+  CELLULAR_IFACE_PATTERNS="${CELLULAR_IFACE_PATTERNS:-wwan,wwp,usb,enx,ppp,cdc}"
+  REQUIRE_CELLULAR_IFACE=false
+  CELLULAR_IFACE=
+fi
+
+echo "========== 主机 =========="
+echo "hostname : $(hostname)"
+echo "kernel   : $(uname -r)"
+echo "arch     : $(uname -m)"
+echo "mem_total: $(awk '/MemTotal/ {printf "%.0f MB", $2/1024}' /proc/meminfo 2>/dev/null || echo unknown)"
+echo "mem_avail: $(awk '/MemAvailable/ {printf "%.0f MB", $2/1024}' /proc/meminfo 2>/dev/null || echo unknown)"
+echo
+
+echo "========== 接口列表 =========="
+printf '%-12s %-10s %s\n' "IFACE" "STATE" "IPv4"
+while IFS='|' read -r name state ip; do
+  printf '%-12s %-10s %s\n' "$name" "$state" "${ip:-}"
+done < <(list_ifaces)
+echo
+
+echo "========== 默认路由 =========="
+ip route show default 2>/dev/null || true
+echo
+echo "default iface: $(detect_default_iface || echo none)"
+echo
+
+echo "========== 数据网卡（代理出口） =========="
+cell="$(detect_cellular_iface "${CELLULAR_IFACE:-}" 2>/dev/null || true)"
+if [[ -n "$cell" ]]; then
+  echo "CELLULAR_IFACE=$cell  ip=$(detect_source_ip "$cell" || true)"
+  echo "说明: 走本代理的流量将从该网卡出（数据流量）"
+else
+  echo "未能自动探测数据网卡。请手动设置 CELLULAR_IFACE="
+  echo "可参考上面接口列表中的 wwan*/usb*/enx* 等。"
+  exit 2
+fi