feat: 初始化 bls-onoffline-backend 项目基础结构

添加 Kafka 消费者、数据库写入、Redis 集成等核心模块，实现设备上下线事件处理
- 创建项目基础目录结构与配置文件
- 实现 Kafka 消费逻辑与手动提交偏移量
- 添加 PostgreSQL 数据库连接与分区表管理
- 集成 Redis 用于错误队列和项目心跳
- 包含数据处理逻辑，区分重启与非重启数据
- 提供数据库初始化脚本与分区创建工具
- 添加单元测试与代码校验脚本

bls-onoffline-backend/scripts/verify_partitions.js

@@ -0,0 +1,61 @@
+import pg from 'pg';
+import { config } from '../src/config/config.js';
+
+const { Pool } = pg;
+
+const verify = async () => {
+  const pool = new Pool({
+    host: config.db.host,
+    port: config.db.port,
+    user: config.db.user,
+    password: config.db.password,
+    database: config.db.database,
+    ssl: config.db.ssl,
+  });
+
+  try {
+    console.log('Verifying partitions for table onoffline_record...');
+    const client = await pool.connect();
+    
+    // Check parent table
+    const parentRes = await client.query(`
+      SELECT to_regclass('onoffline.onoffline_record') as oid;
+    `);
+    if (!parentRes.rows[0].oid) {
+      console.error('Parent table onoffline.onoffline_record DOES NOT EXIST.');
+      return;
+    }
+    console.log('Parent table onoffline.onoffline_record exists.');
+
+    // Check partitions
+    const res = await client.query(`
+      SELECT
+        child.relname AS partition_name
+      FROM pg_inherits
+      JOIN pg_class parent ON pg_inherits.inhparent = parent.oid
+      JOIN pg_class child ON pg_inherits.inhrelid = child.oid
+      JOIN pg_namespace ns ON parent.relnamespace = ns.oid
+      WHERE parent.relname = 'onoffline_record' AND ns.nspname = 'onoffline'
+      ORDER BY child.relname;
+    `);
+
+    console.log(`Found ${res.rowCount} partitions.`);
+    res.rows.forEach(row => {
+      console.log(`- ${row.partition_name}`);
+    });
+
+    if (res.rowCount >= 30) {
+      console.log('SUCCESS: At least 30 partitions exist.');
+    } else {
+      console.warn(`WARNING: Expected 30+ partitions, found ${res.rowCount}.`);
+    }
+    
+    client.release();
+  } catch (err) {
+    console.error('Verification failed:', err);
+  } finally {
+    await pool.end();
+  }
+};
+
+verify();