Update project structure

scripts/restart_flask.sh

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+#!/bin/bash
+# ============================================================
+# restart_flask.sh - 语法检查 + 重启 Flask + 验证
+# 用法: ssh elephant@<AGV_IP> 'bash -s' < scripts/restart_flask.sh
+#       或在 AGV 上: cd ~/work/agv_app && ../../scripts/restart_flask.sh
+# ============================================================
+set -e
+
+AGV_APP_DIR="${AGV_APP_DIR:-/home/elephant/work/agv_app}"
+cd "$AGV_APP_DIR"
+
+echo "=========================================="
+echo "  重启 Flask 服务"
+echo "=========================================="
+echo ""
+
+# 1. 语法检查
+echo "[1/3] Python 语法检查..."
+python3 -m py_compile app.py
+if [ $? -ne 0 ]; then
+    echo "❌ 语法错误，请先修复"
+    exit 1
+fi
+echo "   ✅ 语法检查通过"
+
+# 2. 清缓存 + 重启
+echo "[2/3] 清理缓存并重启..."
+find "$AGV_APP_DIR" -name '*.pyc' -delete 2>/dev/null
+find "$AGV_APP_DIR" -name '__pycache__' -type d -exec rm -rf {} + 2>/dev/null
+
+pkill -f "python.*app.py" 2>/dev/null || true
+sleep 1
+nohup python3 app.py > /tmp/agv_flask.log 2>&1 &
+FLASK_PID=$!
+echo "   Flask PID: $FLASK_PID"
+
+# 3. 验证
+echo "[3/3] 验证服务..."
+sleep 3
+if ss -tlnp 2>/dev/null | grep -q 5000 || netstat -tlnp 2>/dev/null | grep -q 5000; then
+    echo "   ✅ 端口 5000 正常监听"
+    # 测试机械臂摄像头单帧
+    result=$(curl -s --max-time 5 http://127.0.0.1:5000/api/camera/arm_refresh 2>/dev/null | head -c 4)
+    if [ "$result" = "$(echo -en '\xff\xd8\xff\xe0')" ]; then
+        echo "   ✅ arm_refresh 返回 JPEG"
+    else
+        echo "   ⚠️ arm_refresh 返回异常（机械臂可能未连接）"
+    fi
+else
+    echo "   ❌ 端口 5000 未监听，查看日志:"
+    tail -10 /tmp/agv_flask.log
+    exit 1
+fi
+
+echo ""
+echo "=========================================="
+echo "  ✅ 重启完成"
+echo "=========================================="