v2.1: 新增通知提醒功能和安全增强

功能:
- 通知提醒系统: 还款日提醒、逾期提醒、系统消息横幅、登录时通知
- 通知中心UI: 铃铛图标 + 下拉列表 + 未读徽章
- 定时任务: APScheduler 每小时检查即将到期的还款
- 邮件通知: SMTP 发送还款提醒和安全警告
- 异常登录通知: 3/5/10次失败触发网页和邮件通知

安全:
- 登录安全告警: 异常登录次数达到阈值时发送通知
- 密码重置链接: 一次性使用, 5分钟有效期
- 登录频率限制: IP级和账户级限制

技术:
- 后端: FastAPI + SQLAlchemy + PostgreSQL
- 前端: 纯 HTML/CSS/JS
- 部署: Docker Compose (新增 build 配置)

deploy/docker-compose.yml

@@ -0,0 +1,40 @@
+services:
+  db:
+    image: postgres:15-alpine
+    environment:
+      POSTGRES_DB: debt_manager
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: postgres
+    volumes:
+      - pgdata:/var/lib/postgresql/data
+    ports:
+      - "54326:5432"
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U postgres"]
+      interval: 5s
+      timeout: 5s
+      retries: 5
+    restart: unless-stopped
+
+  backend:
+    image: debt-manager-backend:latest
+    ports:
+      - "8000:8000"
+    environment:
+      DATABASE_URL: postgresql+asyncpg://postgres:postgres@db:5432/debt_manager
+      SECRET_KEY: change-this-in-production-please
+    depends_on:
+      db:
+        condition: service_healthy
+    restart: unless-stopped
+
+  frontend:
+    image: debt-manager-frontend:latest
+    ports:
+      - "806:80"
+    depends_on:
+      - backend
+    restart: unless-stopped
+
+volumes:
+  pgdata:

deploy/install.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+set -e
+
+echo "========================================="
+echo "  债务管理系统 - 一键安装"
+echo "========================================="
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+
+echo ""
+echo "[1/3] 加载 Docker 镜像..."
+docker load -i "$SCRIPT_DIR/debt-manager-backend.tar.gz"
+docker load -i "$SCRIPT_DIR/debt-manager-frontend.tar.gz"
+docker load -i "$SCRIPT_DIR/postgres-15-alpine.tar.gz"
+
+echo ""
+echo "[2/3] 启动服务..."
+cd "$SCRIPT_DIR"
+docker compose up -d
+
+echo ""
+echo "[3/3] 等待服务就绪..."
+sleep 5
+
+echo ""
+echo "========================================="
+echo "  安装完成！"
+echo "========================================="
+echo ""
+echo "  前台地址:  http://localhost:806"
+echo "  后台地址:  http://localhost:806/admin.html"
+echo "  API 文档:  http://localhost:8000/docs"
+echo ""
+echo "  默认账号:  admin / admin123"
+echo "  默认账号:  test  / test123"
+echo ""
+echo "  停止服务:  docker compose -f $SCRIPT_DIR/docker-compose.yml down"
+echo "  查看日志:  docker compose -f $SCRIPT_DIR/docker-compose.yml logs -f"
+echo "========================================="

deploy/uninstall.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+set -e
+
+echo "========================================="
+echo "  债务管理系统 - 卸载"
+echo "========================================="
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+
+echo ""
+echo "[1/2] 停止并删除容器..."
+cd "$SCRIPT_DIR"
+docker compose down -v
+
+echo ""
+echo "[2/2] 删除 Docker 镜像..."
+docker rmi debt-manager-backend:latest debt-manager-frontend:latest postgres:15-alpine 2>/dev/null || true
+
+echo ""
+echo "========================================="
+echo "  卸载完成"
+echo "========================================="