diff --git a/.env.example b/.env.example
index 442bb71..769e28d 100644
--- a/.env.example
+++ b/.env.example
@@ -1,13 +1,29 @@
-# 应用配置
+# =========================
+# 应用基础配置
+# =========================
 NODE_ENV=production
 PORT=3000
 
-# Kafka配置
+# 日志级别：debug | info | warn | error
+LOG_LEVEL=info
+LOG_FORMAT=json
+
+# =========================
+# Kafka 配置
+# =========================
+# 多个 broker 用英文逗号分隔
 KAFKA_BROKERS=localhost:9092
-KAFKA_TOPIC=blwlog4Nodejs-rcu-heartbeat-topic
-KAFKA_TOPICS=
-KAFKA_GROUP_ID=bls-heartbeat-consumer
 KAFKA_CLIENT_ID=bls-heartbeat
+KAFKA_GROUP_ID=bls-heartbeat-consumer
+
+# 推荐使用 KAFKA_TOPICS；多个 topic 用英文逗号分隔
+KAFKA_TOPICS=blwlog4Nodejs-rcu-heartbeat-topic
+
+# 兼容旧写法；如已使用 KAFKA_TOPICS，可不填写
+# KAFKA_TOPIC=blwlog4Nodejs-rcu-heartbeat-topic
+
+# latest / earliest
+KAFKA_FROM_OFFSET=latest
 KAFKA_CONSUMER_INSTANCES=6
 KAFKA_AUTO_COMMIT=true
 KAFKA_AUTO_COMMIT_INTERVAL_MS=5000
@@ -18,16 +34,16 @@ KAFKA_FETCH_MAX_BYTES=10485760
 KAFKA_FETCH_MIN_BYTES=1
 KAFKA_FETCH_MAX_WAIT_MS=100
 
-# Kafka SASL配置（如果需要）
+# SASL/SSL 按实际环境开启
 KAFKA_SASL_ENABLED=false
 KAFKA_SASL_MECHANISM=plain
 KAFKA_SASL_USERNAME=
 KAFKA_SASL_PASSWORD=
-
-# Kafka SSL配置（如果需要）
 KAFKA_SSL_ENABLED=false
 
-# PostgreSQL配置
+# =========================
+# PostgreSQL 配置
+# =========================
 POSTGRES_HOST=127.0.0.1
 POSTGRES_PORT=5432
 POSTGRES_DATABASE=log_platform
@@ -35,38 +51,47 @@ POSTGRES_USER=log_admin
 POSTGRES_PASSWORD=your_password
 POSTGRES_IDLE_TIMEOUT_MS=30000
 
-# PostgreSQL环境变量（兼容性）
-PGHOST=
-PGPORT=
-PGTARGETDB=
-PGUSER=
-PGPASSWORD=
+# 可选：兼容标准 PG 环境变量；留空则优先使用上面的 POSTGRES_*
+# PGHOST=
+# PGPORT=
+# PGTARGETDB=
+# PGUSER=
+# PGPASSWORD=
 
-# 数据库重试配置
+# 数据库失败重试
 DB_RETRY_ATTEMPTS=3
 DB_RETRY_DELAY=1000
-DB_PARTITION_MAINTENANCE_ENABLED=true
-DB_PARTITION_FUTURE_DAYS=30
-DB_PARTITION_INTERVAL_HOURS=6
 
-# Redis配置
+# 双写开关
+# 旧明细表：heartbeat.heartbeat_events
+DB_LEGACY_HEARTBEAT_ENABLED=true
+# 新热表：heartbeat.heartbeat_events_g4_hot
+DB_G4_HOT_HEARTBEAT_ENABLED=false
+# room_status 写入开关
+DB_ROOM_STATUS_ENABLED=true
+
+# 如无特殊需要，保持默认表名即可
+DB_LEGACY_TABLE=heartbeat.heartbeat_events
+DB_G4_HOT_TABLE=heartbeat.heartbeat_events_g4_hot
+
+# =========================
+# Redis 配置
+# =========================
 REDIS_ENABLED=true
 REDIS_HOST=10.8.8.109
 REDIS_PORT=6379
 REDIS_PASSWORD=
 REDIS_DB=15
+
+# 若提供 REDIS_URL，则业务侧可优先使用统一连接串
 REDIS_URL=
 REDIS_CONNECT_TIMEOUT_MS=5000
 REDIS_PROJECT_NAME=BLS主机心跳日志
 REDIS_HEARTBEAT_INTERVAL_MS=3000
-REDIS_HEARTBEAT_TTL_SECONDS=30
 REDIS_API_BASE_URL=http://127.0.0.1:3000
-REDIS_CONSOLE_MAX_LEN=
 
-# 处理器配置
+# =========================
+# 批处理配置
+# =========================
 PROCESSOR_BATCH_SIZE=100
-PROCESSOR_BATCH_TIMEOUT=5000
-
-# 日志配置
-LOG_LEVEL=info
-LOG_FORMAT=json
\ No newline at end of file
+PROCESSOR_BATCH_TIMEOUT=5000
\ No newline at end of file
diff --git a/.github/prompts/plan-finalExecutableIndependentDualWriteNewHotTable.prompt.md b/.github/prompts/plan-finalExecutableIndependentDualWriteNewHotTable.prompt.md
new file mode 100644
index 0000000..c849e25
--- /dev/null
+++ b/.github/prompts/plan-finalExecutableIndependentDualWriteNewHotTable.prompt.md
@@ -0,0 +1,419 @@
+## 最终可执行的实施清单
+
+以下清单基于你已经确认的最终约束整理，可直接作为实施顺序使用。
+
+---
+
+## 一、实施目标
+
+在**不改变数据来源**、**不改变现有批次处理节奏**、**不改变 `room_status` 写法与目标** 的前提下，实现：
+
+- 旧明细表 `heartbeat.heartbeat_events` 可独立开关
+- 新明细表 `heartbeat.heartbeat_events_g4_hot` 可独立开关
+- 新明细表继续使用**批量 `COPY`**
+- 旧/新明细写入**完全独立**
+- `room_status` 始终独立执行，不受明细写入开关影响
+- 错误表 `heartbeat.heartbeat_events_errors` 只保留一份，**仅记录新表写入失败**
+- 支持未来**关闭旧表，仅保留新表**
+
+---
+
+## 二、最终行为规则
+
+### 1. 明细写入规则
+- `legacyHeartbeatEnabled=true` 时，写旧表 `heartbeat.heartbeat_events`
+- `g4HotHeartbeatEnabled=true` 时，写新表 `heartbeat.heartbeat_events_g4_hot`
+- 两者可同时开启，也可单独开启，也可同时关闭
+
+### 2. `room_status` 规则
+- 始终执行现有 `upsertRoomStatus()`
+- 目标表不变
+- 写法不变
+- 不依赖旧明细是否开启
+- 不依赖新明细是否开启
+- 即使旧/新明细都关闭，仍然写 `room_status`
+
+### 3. 错误表规则
+- 继续使用现有 `heartbeat.heartbeat_events_errors`
+- 字段完全不变
+- 只记录**新表写入失败**
+- 旧表写入失败**不再写错误表**，只记录日志/统计
+
+### 4. 消费暂停规则
+- 不能因为“两路明细都关闭”而暂停消费
+- 不能因为“新表表级错误”直接当成全局数据库离线
+- 只有在**当前启用且关键的写入路径**发生连接级不可恢复故障时，才触发暂停消费
+
+---
+
+## 三、代码改造清单
+
+### Task 1：扩展配置项
+**目标文件**
+- `src/config/config.js`
+- `src/config/config.example.js`
+- `README.md` 或部署文档
+
+**新增配置建议**
+- `DB_LEGACY_HEARTBEAT_ENABLED`
+- `DB_G4_HOT_HEARTBEAT_ENABLED`
+- `DB_ROOM_STATUS_ENABLED`
+- `DB_G4_HOT_TABLE`
+- `DB_LEGACY_TABLE`
+
+**建议默认值**
+- `DB_LEGACY_HEARTBEAT_ENABLED=true`
+- `DB_G4_HOT_HEARTBEAT_ENABLED=false`
+- `DB_ROOM_STATUS_ENABLED=true`
+- `DB_LEGACY_TABLE=heartbeat.heartbeat_events`
+- `DB_G4_HOT_TABLE=heartbeat.heartbeat_events_g4_hot`
+
+**实施要求**
+- 保持与当前 `config.js` 风格一致
+- 布尔值走现有 `parseBoolean`
+- 表名配置单独放在 `db` 配置节点下
+
+**完成标准**
+- 应用启动时可从环境变量读取旧/新明细开关
+- `room_status` 开关独立可控
+- 新旧目标表名可配置
+
+---
+
+### Task 2：抽象通用明细写入内核
+**目标文件**
+- `src/db/databaseManager.js`
+
+**当前基础**
+- 现有 `insertHeartbeatEvents()` 已实现：
+  - 分区预创建
+  - `COPY ... FROM STDIN`
+  - 缺分区补建重试
+  - fallback 逐条 `INSERT`
+
+**要做的事**
+把现有写旧表的强绑定逻辑抽象为通用方法，例如：
+- `_insertHeartbeatEventsToTarget(events, targetConfig)`
+- `_buildHeartbeatCopySql(targetTable, columns)`
+- `_buildHeartbeatInsertSql(targetTable, columns)`
+
+**目标参数至少包含**
+- `tableName`
+- `columns`
+- `logPrefix`
+- `enablePartitionEnsure`
+- 缺分区识别规则
+
+**实施要求**
+- 不能复制两份几乎相同的 `COPY` 代码
+- 保证旧表和新表复用同一套批量写入能力
+- 保证新表也走 `COPY`
+
+**完成标准**
+- 写旧表和写新表都可通过同一个通用写入内核完成
+- 旧逻辑行为不变
+- 新表能力复用旧逻辑
+
+---
+
+### Task 3：实现双明细独立编排
+**目标文件**
+- `src/db/databaseManager.js`
+
+**新增编排方法建议**
+- `writeHeartbeatDetails(events)`
+- 或 `insertHeartbeatEventsDual(events)`
+
+**它需要负责**
+- 判断旧表是否开启
+- 判断新表是否开启
+- 分别调用：
+  - `legacy writer`
+  - `g4Hot writer`
+- 聚合结果并返回结构化结果
+
+**返回结果建议**
+至少包含：
+- `legacy.enabled`
+- `legacy.success`
+- `legacy.insertedCount`
+- `legacy.failedRecords`
+- `legacy.error`
+- `g4Hot.enabled`
+- `g4Hot.success`
+- `g4Hot.insertedCount`
+- `g4Hot.failedRecords`
+- `g4Hot.error`
+
+**实施要求**
+- 两路执行逻辑互不影响
+- 一路失败不能吞掉另一路结果
+- 两路都关闭时返回“跳过写入”的明确结果，不报错
+
+**完成标准**
+- 系统能正确识别四种模式：
+  - 仅旧
+  - 仅新
+  - 双写
+  - 双关
+
+---
+
+### Task 4：调整 `HeartbeatProcessor.processBatch()` 的主流程
+**目标文件**
+- `src/processor/heartbeatProcessor.js`
+
+**当前逻辑问题**
+当前流程中：
+- 先写 `insertHeartbeatEvents(batchData)`
+- 只有成功后才 best-effort 写 `room_status`
+
+这与当前最终要求不一致。
+
+**改造目标**
+把流程改成三段独立逻辑：
+
+#### A. 明细写入
+调用新的双写编排方法，获取旧/新明细写入结果
+
+#### B. `room_status` 写入
+无论旧/新明细写入开关状态如何，都执行：
+- `upsertRoomStatus(batchData)`
+
+注意：
+- 只要 `DB_ROOM_STATUS_ENABLED=true`
+- 就执行当前逻辑
+- 不依赖明细成功与否
+
+#### C. 错误表写入
+仅把**新表失败记录**送入 `insertHeartbeatEventsErrors()`
+
+**完成标准**
+- `room_status` 从“依赖旧表成功”变成“独立执行”
+- 错误表只接新表失败
+- 旧表失败不进错误表
+
+---
+
+### Task 5：重新定义错误表调用策略
+**目标文件**
+- `src/db/databaseManager.js`
+- `src/processor/heartbeatProcessor.js`
+
+**要求**
+- 保留 `insertHeartbeatEventsErrors()` 表结构和 SQL
+- 仅调整调用来源：
+  - 新表失败 → 写错误表
+  - 旧表失败 → 不写错误表
+
+**实施要求**
+建议在双写结果聚合后，只提取：
+- `g4Hot.failedRecords`
+
+转换成当前错误表 payload 后调用 `insertHeartbeatEventsErrors()`
+
+**完成标准**
+- 错误表字段、表结构、SQL 全不变
+- 旧表失败不会污染错误表
+- 新表失败可追踪
+
+---
+
+### Task 6：调整连接状态与暂停消费策略
+**目标文件**
+- `src/processor/heartbeatProcessor.js`
+- `src/db/databaseManager.js`
+
+**当前问题**
+目前 `_isConnectionError()` 和 `_scheduleDbCheck()` 基本围绕单一 DB 写入路径设计。
+
+**改造要求**
+把“是否需要暂停 Kafka 消费”改成基于**启用中的关键 sink**判断。
+
+**建议规则**
+- 仅旧表开启：旧表连接故障才可能触发暂停
+- 仅新表开启：新表连接故障才可能触发暂停
+- 双开：如果两路都因连接级错误不可写，可触发暂停
+- 双关但 `room_status` 开启：只要 `room_status` 还能正常写，就不应因明细关闭而暂停
+
+**重要区分**
+以下不能都算成“数据库离线”：
+- 连接失败
+- 缺分区
+- 表不存在
+- 表字段不匹配
+- 权限不足
+
+其中真正应触发离线处理的优先是：
+- `08006`
+- `08001`
+- `08003`
+- `08004`
+- `08007`
+- `57P03`
+- 以及明显的网络连接错误
+
+**完成标准**
+- 不会因为新表单独异常而误停整个消费
+- 不会因为两路明细关闭而误停消费
+
+---
+
+### Task 7：补充启动日志与配置摘要
+**目标文件**
+- `src/index.js`
+
+**新增日志建议**
+启动时输出：
+- 旧明细写入是否开启
+- 新明细写入是否开启
+- `room_status` 是否开启
+- 旧表目标
+- 新表目标
+
+**完成标准**
+- 运行日志中能直接看出当前处于哪种模式
+- 运维排障时不用翻配置文件
+
+---
+
+### Task 8：补充统计项
+**目标文件**
+- `src/stats/statsManager.js`
+- 如有 Redis 控制台输出，也同步补充
+
+**新增统计建议**
+- legacy detail success count
+- legacy detail failed count
+- g4Hot detail success count
+- g4Hot detail failed count
+- room_status success count
+- room_status failed count
+- g4Hot error-table inserted count
+
+**完成标准**
+- 双写观察期可以快速对比旧表/新表健康状态
+- 能单独看出新表失败是否升高
+
+---
+
+## 四、测试清单
+
+### Task 9：补充单元测试
+**目标文件**
+- `test/smoke.test.js`
+- 如有必要新增专门的 `databaseManager` 测试文件
+
+**必须覆盖的场景**
+1. 仅旧表开启
+2. 仅新表开启
+3. 旧新双开
+4. 旧新双关，但 `room_status` 开启
+5. 旧成功、新失败
+6. 旧失败、新成功
+7. 双失败
+8. 新表失败时写错误表
+9. 旧表失败时不写错误表
+10. `room_status` 始终执行
+11. `COPY` 失败时新表降级逐条 `INSERT`
+12. 缺分区时自动补分区重试
+
+**完成标准**
+- `npm test` 可覆盖新旧双写与独立逻辑
+- `room_status` 独立性有明确断言
+
+---
+
+### Task 10：补充数据库 smoke 验证
+**目标文件**
+- `scripts/db/smokeTest.js`
+- 或新增 `scripts/db/smokeG4Hot.js`
+
+**验证项**
+- 新表 `heartbeat.heartbeat_events_g4_hot` 能写入
+- 新表分区能正确附着
+- 新表唯一键/索引存在
+- 新表可按主查询维度检索
+- 旧表关闭、新表开启时仍正常
+- 旧新都关但 `room_status` 开启时系统不报配置错误
+
+**完成标准**
+- 有一套上线前可重复执行的 smoke 脚本
+- 可快速确认新表接入正确
+
+---
+
+## 五、上线实施顺序
+
+### Step 1：代码部署，保持现状
+配置：
+- 旧表开启
+- 新表关闭
+- `room_status` 开启
+
+目标：
+- 确认改造后代码在“旧模式”下行为不变
+
+### Step 2：开启新表双写
+配置：
+- 旧表开启
+- 新表开启
+- `room_status` 开启
+
+目标：
+- 观察新表写入是否稳定
+- 检查新表失败是否进入错误表
+- 比对旧/新明细数据量
+
+### Step 3：观察稳定性
+重点观察：
+- 新表 `COPY` 成功率
+- 新表 fallback 频率
+- 错误表记录量
+- `room_status` 是否持续正常
+
+### Step 4：关闭旧表
+配置：
+- 旧表关闭
+- 新表开启
+- `room_status` 开启
+
+目标：
+- 验证“仅保留新表”时系统稳定运行
+
+### Step 5：保留过渡观察期
+目标：
+- 持续观察新表、错误表、`room_status`
+
+---
+
+## 六、验收标准
+
+满足以下全部条件即可验收：
+
+1. 新表 `heartbeat.heartbeat_events_g4_hot` 接入成功
+2. 新表仍使用批量 `COPY`
+3. 旧/新明细可独立开关
+4. `room_status` 始终独立执行
+5. 两路明细都关闭时，系统仍允许继续写 `room_status`
+6. 错误表仅记录新表失败
+7. 旧表失败不会写错误表
+8. 不修改 Kafka 数据来源
+9. 不修改现有数据转换来源
+10. 可支持后续关闭旧表，仅保留新表
+
+---
+
+## 七、建议的实施顺序编号版
+
+1. 扩展 `config.js` 配置项
+2. 重构 `databaseManager.js`，抽通用 `COPY` writer
+3. 在 `databaseManager.js` 增加旧/新明细双写编排
+4. 调整 `heartbeatProcessor.js`，让 `room_status` 独立执行
+5. 调整错误表调用，仅接新表失败
+6. 重构连接异常与暂停消费判定
+7. 增加启动配置摘要日志
+8. 增加 stats 指标
+9. 补测试
+10. 补 smoke 验证脚本
+11. 按“旧开新关 → 双开 → 关旧留新”上线
diff --git a/docs/heartbeat_events_g4_hot.sql b/docs/heartbeat_events_g4_hot.sql
new file mode 100644
index 0000000..8fb19aa
--- /dev/null
+++ b/docs/heartbeat_events_g4_hot.sql
@@ -0,0 +1,530 @@
+/*
+ Navicat Premium Dump SQL
+
+ Source Server         : FnOS 109
+ Source Server Type    : PostgreSQL
+ Source Server Version : 150014 (150014)
+ Source Host           : 10.8.8.109:5433
+ Source Catalog        : log_platform
+ Source Schema         : heartbeat
+
+ Target Server Type    : PostgreSQL
+ Target Server Version : 150014 (150014)
+ File Encoding         : 65001
+
+ Date: 09/03/2026 10:11:03
+*/
+
+
+-- ----------------------------
+-- Table structure for heartbeat_events_g4_hot_d20260301
+-- ----------------------------
+DROP TABLE IF EXISTS "heartbeat"."heartbeat_events_g4_hot_d20260301";
+CREATE TABLE "heartbeat"."heartbeat_events_g4_hot_d20260301" (
+  "ts_ms" int8 NOT NULL,
+  "hotel_id" int2 NOT NULL,
+  "room_id" varchar(50) COLLATE "pg_catalog"."default" NOT NULL,
+  "device_id" varchar(64) COLLATE "pg_catalog"."default" NOT NULL,
+  "ip" varchar(21) COLLATE "pg_catalog"."default" NOT NULL,
+  "power_state" int2 NOT NULL,
+  "guest_type" int2 NOT NULL,
+  "cardless_state" int2 NOT NULL,
+  "service_mask" int8 NOT NULL,
+  "pms_state" int2 NOT NULL,
+  "carbon_state" int2 NOT NULL,
+  "device_count" int2 NOT NULL,
+  "comm_seq" int4 NOT NULL,
+  "elec_address" _text COLLATE "pg_catalog"."default",
+  "air_address" _text COLLATE "pg_catalog"."default",
+  "voltage" _float8,
+  "ampere" _float8,
+  "power" _float8,
+  "phase" _text COLLATE "pg_catalog"."default",
+  "energy" _float8,
+  "sum_energy" _float8,
+  "state" _int2,
+  "model" _int2,
+  "speed" _int2,
+  "set_temp" _int2,
+  "now_temp" _int2,
+  "solenoid_valve" _int2,
+  "extra" jsonb,
+  "write_ts_ms" int8 NOT NULL DEFAULT ((EXTRACT(epoch FROM clock_timestamp()) * (1000)::numeric))::bigint,
+  "insert_card" int2,
+  "bright_g" int2,
+  "version" int2,
+  "svc_01" bool,
+  "svc_02" bool,
+  "svc_03" bool,
+  "svc_04" bool,
+  "svc_05" bool,
+  "svc_06" bool,
+  "svc_07" bool,
+  "svc_08" bool,
+  "svc_09" bool,
+  "svc_10" bool,
+  "svc_11" bool,
+  "svc_12" bool,
+  "svc_13" bool,
+  "svc_14" bool,
+  "svc_15" bool,
+  "svc_16" bool,
+  "svc_17" bool,
+  "svc_18" bool,
+  "svc_19" bool,
+  "svc_20" bool,
+  "svc_21" bool,
+  "svc_22" bool,
+  "svc_23" bool,
+  "svc_24" bool,
+  "svc_25" bool,
+  "svc_26" bool,
+  "svc_27" bool,
+  "svc_28" bool,
+  "svc_29" bool,
+  "svc_30" bool,
+  "svc_31" bool,
+  "svc_32" bool,
+  "svc_33" bool,
+  "svc_34" bool,
+  "svc_35" bool,
+  "svc_36" bool,
+  "svc_37" bool,
+  "svc_38" bool,
+  "svc_39" bool,
+  "svc_40" bool,
+  "svc_41" bool,
+  "svc_42" bool,
+  "svc_43" bool,
+  "svc_44" bool,
+  "svc_45" bool,
+  "svc_46" bool,
+  "svc_47" bool,
+  "svc_48" bool,
+  "svc_49" bool,
+  "svc_50" bool,
+  "svc_51" bool,
+  "svc_52" bool,
+  "svc_53" bool,
+  "svc_54" bool,
+  "svc_55" bool,
+  "svc_56" bool,
+  "svc_57" bool,
+  "svc_58" bool,
+  "svc_59" bool,
+  "svc_60" bool,
+  "svc_61" bool,
+  "svc_62" bool,
+  "svc_63" bool,
+  "svc_64" bool,
+  "air_address_1" text COLLATE "pg_catalog"."default",
+  "air_address_2" text COLLATE "pg_catalog"."default",
+  "air_address_residual" _text COLLATE "pg_catalog"."default",
+  "state_1" int2,
+  "state_2" int2,
+  "state_residual" _int2,
+  "model_1" int2,
+  "model_2" int2,
+  "model_residual" _int2,
+  "speed_1" int2,
+  "speed_2" int2,
+  "speed_residual" _int2,
+  "set_temp_1" int2,
+  "set_temp_2" int2,
+  "set_temp_residual" _int2,
+  "now_temp_1" int2,
+  "now_temp_2" int2,
+  "now_temp_residual" _int2,
+  "solenoid_valve_1" int2,
+  "solenoid_valve_2" int2,
+  "solenoid_valve_residual" _int2,
+  "elec_address_1" text COLLATE "pg_catalog"."default",
+  "elec_address_2" text COLLATE "pg_catalog"."default",
+  "elec_address_residual" _text COLLATE "pg_catalog"."default",
+  "voltage_1" float8,
+  "voltage_2" float8,
+  "voltage_residual" _float8,
+  "ampere_1" float8,
+  "ampere_2" float8,
+  "ampere_residual" _float8,
+  "power_1" float8,
+  "power_2" float8,
+  "power_residual" _float8,
+  "phase_1" text COLLATE "pg_catalog"."default",
+  "phase_2" text COLLATE "pg_catalog"."default",
+  "phase_residual" _text COLLATE "pg_catalog"."default",
+  "energy_1" float8,
+  "energy_2" float8,
+  "energy_residual" _float8,
+  "sum_energy_1" float8,
+  "sum_energy_2" float8,
+  "sum_energy_residual" _float8,
+  "power_carbon_on" float8,
+  "power_carbon_off" float8,
+  "power_person_exist" float8,
+  "power_person_left" float8,
+  "guid" varchar(32) COLLATE "pg_catalog"."default"
+)
+TABLESPACE "ts_hot"
+;
+
+-- ----------------------------
+-- Table structure for heartbeat_events_g4_hot_d20260302
+-- ----------------------------
+DROP TABLE IF EXISTS "heartbeat"."heartbeat_events_g4_hot_d20260302";
+CREATE TABLE "heartbeat"."heartbeat_events_g4_hot_d20260302" (
+  "ts_ms" int8 NOT NULL,
+  "hotel_id" int2 NOT NULL,
+  "room_id" varchar(50) COLLATE "pg_catalog"."default" NOT NULL,
+  "device_id" varchar(64) COLLATE "pg_catalog"."default" NOT NULL,
+  "ip" varchar(21) COLLATE "pg_catalog"."default" NOT NULL,
+  "power_state" int2 NOT NULL,
+  "guest_type" int2 NOT NULL,
+  "cardless_state" int2 NOT NULL,
+  "service_mask" int8 NOT NULL,
+  "pms_state" int2 NOT NULL,
+  "carbon_state" int2 NOT NULL,
+  "device_count" int2 NOT NULL,
+  "comm_seq" int4 NOT NULL,
+  "elec_address" _text COLLATE "pg_catalog"."default",
+  "air_address" _text COLLATE "pg_catalog"."default",
+  "voltage" _float8,
+  "ampere" _float8,
+  "power" _float8,
+  "phase" _text COLLATE "pg_catalog"."default",
+  "energy" _float8,
+  "sum_energy" _float8,
+  "state" _int2,
+  "model" _int2,
+  "speed" _int2,
+  "set_temp" _int2,
+  "now_temp" _int2,
+  "solenoid_valve" _int2,
+  "extra" jsonb,
+  "write_ts_ms" int8 NOT NULL DEFAULT ((EXTRACT(epoch FROM clock_timestamp()) * (1000)::numeric))::bigint,
+  "insert_card" int2,
+  "bright_g" int2,
+  "version" int2,
+  "svc_01" bool,
+  "svc_02" bool,
+  "svc_03" bool,
+  "svc_04" bool,
+  "svc_05" bool,
+  "svc_06" bool,
+  "svc_07" bool,
+  "svc_08" bool,
+  "svc_09" bool,
+  "svc_10" bool,
+  "svc_11" bool,
+  "svc_12" bool,
+  "svc_13" bool,
+  "svc_14" bool,
+  "svc_15" bool,
+  "svc_16" bool,
+  "svc_17" bool,
+  "svc_18" bool,
+  "svc_19" bool,
+  "svc_20" bool,
+  "svc_21" bool,
+  "svc_22" bool,
+  "svc_23" bool,
+  "svc_24" bool,
+  "svc_25" bool,
+  "svc_26" bool,
+  "svc_27" bool,
+  "svc_28" bool,
+  "svc_29" bool,
+  "svc_30" bool,
+  "svc_31" bool,
+  "svc_32" bool,
+  "svc_33" bool,
+  "svc_34" bool,
+  "svc_35" bool,
+  "svc_36" bool,
+  "svc_37" bool,
+  "svc_38" bool,
+  "svc_39" bool,
+  "svc_40" bool,
+  "svc_41" bool,
+  "svc_42" bool,
+  "svc_43" bool,
+  "svc_44" bool,
+  "svc_45" bool,
+  "svc_46" bool,
+  "svc_47" bool,
+  "svc_48" bool,
+  "svc_49" bool,
+  "svc_50" bool,
+  "svc_51" bool,
+  "svc_52" bool,
+  "svc_53" bool,
+  "svc_54" bool,
+  "svc_55" bool,
+  "svc_56" bool,
+  "svc_57" bool,
+  "svc_58" bool,
+  "svc_59" bool,
+  "svc_60" bool,
+  "svc_61" bool,
+  "svc_62" bool,
+  "svc_63" bool,
+  "svc_64" bool,
+  "air_address_1" text COLLATE "pg_catalog"."default",
+  "air_address_2" text COLLATE "pg_catalog"."default",
+  "air_address_residual" _text COLLATE "pg_catalog"."default",
+  "state_1" int2,
+  "state_2" int2,
+  "state_residual" _int2,
+  "model_1" int2,
+  "model_2" int2,
+  "model_residual" _int2,
+  "speed_1" int2,
+  "speed_2" int2,
+  "speed_residual" _int2,
+  "set_temp_1" int2,
+  "set_temp_2" int2,
+  "set_temp_residual" _int2,
+  "now_temp_1" int2,
+  "now_temp_2" int2,
+  "now_temp_residual" _int2,
+  "solenoid_valve_1" int2,
+  "solenoid_valve_2" int2,
+  "solenoid_valve_residual" _int2,
+  "elec_address_1" text COLLATE "pg_catalog"."default",
+  "elec_address_2" text COLLATE "pg_catalog"."default",
+  "elec_address_residual" _text COLLATE "pg_catalog"."default",
+  "voltage_1" float8,
+  "voltage_2" float8,
+  "voltage_residual" _float8,
+  "ampere_1" float8,
+  "ampere_2" float8,
+  "ampere_residual" _float8,
+  "power_1" float8,
+  "power_2" float8,
+  "power_residual" _float8,
+  "phase_1" text COLLATE "pg_catalog"."default",
+  "phase_2" text COLLATE "pg_catalog"."default",
+  "phase_residual" _text COLLATE "pg_catalog"."default",
+  "energy_1" float8,
+  "energy_2" float8,
+  "energy_residual" _float8,
+  "sum_energy_1" float8,
+  "sum_energy_2" float8,
+  "sum_energy_residual" _float8,
+  "power_carbon_on" float8,
+  "power_carbon_off" float8,
+  "power_person_exist" float8,
+  "power_person_left" float8,
+  "guid" varchar(32) COLLATE "pg_catalog"."default"
+)
+TABLESPACE "ts_hot"
+;
+
+-- ----------------------------
+-- Table structure for heartbeat_events_g4_hot
+-- ----------------------------
+DROP TABLE IF EXISTS "heartbeat"."heartbeat_events_g4_hot";
+CREATE TABLE "heartbeat"."heartbeat_events_g4_hot" (
+  "ts_ms" int8 NOT NULL,
+  "hotel_id" int2 NOT NULL,
+  "room_id" varchar(50) COLLATE "pg_catalog"."default" NOT NULL,
+  "device_id" varchar(64) COLLATE "pg_catalog"."default" NOT NULL,
+  "ip" varchar(21) COLLATE "pg_catalog"."default" NOT NULL,
+  "power_state" int2 NOT NULL,
+  "guest_type" int2 NOT NULL,
+  "cardless_state" int2 NOT NULL,
+  "service_mask" int8 NOT NULL,
+  "pms_state" int2 NOT NULL,
+  "carbon_state" int2 NOT NULL,
+  "device_count" int2 NOT NULL,
+  "comm_seq" int4 NOT NULL,
+  "elec_address" text[] COLLATE "pg_catalog"."default",
+  "air_address" text[] COLLATE "pg_catalog"."default",
+  "voltage" float8[],
+  "ampere" float8[],
+  "power" float8[],
+  "phase" text[] COLLATE "pg_catalog"."default",
+  "energy" float8[],
+  "sum_energy" float8[],
+  "state" int2[],
+  "model" int2[],
+  "speed" int2[],
+  "set_temp" int2[],
+  "now_temp" int2[],
+  "solenoid_valve" int2[],
+  "extra" jsonb,
+  "write_ts_ms" int8 NOT NULL DEFAULT ((EXTRACT(epoch FROM clock_timestamp()) * (1000)::numeric))::bigint,
+  "insert_card" int2,
+  "bright_g" int2,
+  "version" int2,
+  "svc_01" bool,
+  "svc_02" bool,
+  "svc_03" bool,
+  "svc_04" bool,
+  "svc_05" bool,
+  "svc_06" bool,
+  "svc_07" bool,
+  "svc_08" bool,
+  "svc_09" bool,
+  "svc_10" bool,
+  "svc_11" bool,
+  "svc_12" bool,
+  "svc_13" bool,
+  "svc_14" bool,
+  "svc_15" bool,
+  "svc_16" bool,
+  "svc_17" bool,
+  "svc_18" bool,
+  "svc_19" bool,
+  "svc_20" bool,
+  "svc_21" bool,
+  "svc_22" bool,
+  "svc_23" bool,
+  "svc_24" bool,
+  "svc_25" bool,
+  "svc_26" bool,
+  "svc_27" bool,
+  "svc_28" bool,
+  "svc_29" bool,
+  "svc_30" bool,
+  "svc_31" bool,
+  "svc_32" bool,
+  "svc_33" bool,
+  "svc_34" bool,
+  "svc_35" bool,
+  "svc_36" bool,
+  "svc_37" bool,
+  "svc_38" bool,
+  "svc_39" bool,
+  "svc_40" bool,
+  "svc_41" bool,
+  "svc_42" bool,
+  "svc_43" bool,
+  "svc_44" bool,
+  "svc_45" bool,
+  "svc_46" bool,
+  "svc_47" bool,
+  "svc_48" bool,
+  "svc_49" bool,
+  "svc_50" bool,
+  "svc_51" bool,
+  "svc_52" bool,
+  "svc_53" bool,
+  "svc_54" bool,
+  "svc_55" bool,
+  "svc_56" bool,
+  "svc_57" bool,
+  "svc_58" bool,
+  "svc_59" bool,
+  "svc_60" bool,
+  "svc_61" bool,
+  "svc_62" bool,
+  "svc_63" bool,
+  "svc_64" bool,
+  "air_address_1" text COLLATE "pg_catalog"."default",
+  "air_address_2" text COLLATE "pg_catalog"."default",
+  "air_address_residual" text[] COLLATE "pg_catalog"."default",
+  "state_1" int2,
+  "state_2" int2,
+  "state_residual" int2[],
+  "model_1" int2,
+  "model_2" int2,
+  "model_residual" int2[],
+  "speed_1" int2,
+  "speed_2" int2,
+  "speed_residual" int2[],
+  "set_temp_1" int2,
+  "set_temp_2" int2,
+  "set_temp_residual" int2[],
+  "now_temp_1" int2,
+  "now_temp_2" int2,
+  "now_temp_residual" int2[],
+  "solenoid_valve_1" int2,
+  "solenoid_valve_2" int2,
+  "solenoid_valve_residual" int2[],
+  "elec_address_1" text COLLATE "pg_catalog"."default",
+  "elec_address_2" text COLLATE "pg_catalog"."default",
+  "elec_address_residual" text[] COLLATE "pg_catalog"."default",
+  "voltage_1" float8,
+  "voltage_2" float8,
+  "voltage_residual" float8[],
+  "ampere_1" float8,
+  "ampere_2" float8,
+  "ampere_residual" float8[],
+  "power_1" float8,
+  "power_2" float8,
+  "power_residual" float8[],
+  "phase_1" text COLLATE "pg_catalog"."default",
+  "phase_2" text COLLATE "pg_catalog"."default",
+  "phase_residual" text[] COLLATE "pg_catalog"."default",
+  "energy_1" float8,
+  "energy_2" float8,
+  "energy_residual" float8[],
+  "sum_energy_1" float8,
+  "sum_energy_2" float8,
+  "sum_energy_residual" float8[],
+  "power_carbon_on" float8,
+  "power_carbon_off" float8,
+  "power_person_exist" float8,
+  "power_person_left" float8,
+  "guid" varchar(32) COLLATE "pg_catalog"."default"
+)
+PARTITION BY RANGE (
+  "ts_ms" "pg_catalog"."int8_ops"
+)
+TABLESPACE "ts_hot"
+;
+ALTER TABLE "heartbeat"."heartbeat_events_g4_hot" ATTACH PARTITION "heartbeat"."heartbeat_events_g4_hot_d20260301" FOR VALUES FROM (
+'1772294400000'
+) TO (
+'1772380800000'
+)
+;
+ALTER TABLE "heartbeat"."heartbeat_events_g4_hot" ATTACH PARTITION "heartbeat"."heartbeat_events_g4_hot_d20260302" FOR VALUES FROM (
+'1772380800000'
+) TO (
+'1772467200000'
+)
+;
+
+-- ----------------------------
+-- Indexes structure for table heartbeat_events_g4_hot_d20260301
+-- ----------------------------
+CREATE UNIQUE INDEX "heartbeat_events_g4_hot_d20260301_guid_ts_ms_idx" ON "heartbeat"."heartbeat_events_g4_hot_d20260301" USING btree (
+  "guid" COLLATE "pg_catalog"."default" "pg_catalog"."text_ops" ASC NULLS LAST,
+  "ts_ms" "pg_catalog"."int8_ops" ASC NULLS LAST
+) TABLESPACE "ts_hot";
+CREATE INDEX "heartbeat_events_g4_hot_d2026_hotel_id_room_id_device_id_ts_idx" ON "heartbeat"."heartbeat_events_g4_hot_d20260301" USING btree (
+  "hotel_id" "pg_catalog"."int2_ops" ASC NULLS LAST,
+  "room_id" COLLATE "pg_catalog"."default" "pg_catalog"."text_ops" ASC NULLS LAST,
+  "device_id" COLLATE "pg_catalog"."default" "pg_catalog"."text_ops" ASC NULLS LAST,
+  "ts_ms" "pg_catalog"."int8_ops" DESC NULLS FIRST
+) WITH (FILLFACTOR = 100) TABLESPACE "ts_hot";
+
+-- ----------------------------
+-- Indexes structure for table heartbeat_events_g4_hot_d20260302
+-- ----------------------------
+CREATE UNIQUE INDEX "heartbeat_events_g4_hot_d20260302_guid_ts_ms_idx" ON "heartbeat"."heartbeat_events_g4_hot_d20260302" USING btree (
+  "guid" COLLATE "pg_catalog"."default" "pg_catalog"."text_ops" ASC NULLS LAST,
+  "ts_ms" "pg_catalog"."int8_ops" ASC NULLS LAST
+) TABLESPACE "ts_hot";
+CREATE INDEX "heartbeat_events_g4_hot_d2026_hotel_id_room_id_device_id_t_idx1" ON "heartbeat"."heartbeat_events_g4_hot_d20260302" USING btree (
+  "hotel_id" "pg_catalog"."int2_ops" ASC NULLS LAST,
+  "room_id" COLLATE "pg_catalog"."default" "pg_catalog"."text_ops" ASC NULLS LAST,
+  "device_id" COLLATE "pg_catalog"."default" "pg_catalog"."text_ops" ASC NULLS LAST,
+  "ts_ms" "pg_catalog"."int8_ops" DESC NULLS FIRST
+) WITH (FILLFACTOR = 100) TABLESPACE "ts_hot";
+
+-- ----------------------------
+-- Indexes structure for table heartbeat_events_g4_hot
+-- ----------------------------
+CREATE UNIQUE INDEX "idx_g4_hot_guid_unique" ON "heartbeat"."heartbeat_events_g4_hot" USING btree (
+  "guid" COLLATE "pg_catalog"."default" "pg_catalog"."text_ops" ASC NULLS LAST,
+  "ts_ms" "pg_catalog"."int8_ops" ASC NULLS LAST
+) TABLESPACE "ts_hot";
+CREATE INDEX "idx_g4_hot_lookup" ON "heartbeat"."heartbeat_events_g4_hot" USING btree (
+  "hotel_id" "pg_catalog"."int2_ops" ASC NULLS LAST,
+  "room_id" COLLATE "pg_catalog"."default" "pg_catalog"."text_ops" ASC NULLS LAST,
+  "device_id" COLLATE "pg_catalog"."default" "pg_catalog"."text_ops" ASC NULLS LAST,
+  "ts_ms" "pg_catalog"."int8_ops" DESC NULLS FIRST
+) WITH (FILLFACTOR = 100) TABLESPACE "ts_hot";
diff --git a/docs/新分区方法案例.md b/docs/新分区方法案例.md
deleted file mode 100644
index 9b31d1a..0000000
--- a/docs/新分区方法案例.md
+++ /dev/null
@@ -1,55 +0,0 @@
--- 通过 docker compose 在容器内执行 psql，并使用 here-doc 传入 SQL
-docker compose exec -T postgres psql -U log_admin -d log_platform -v ON_ERROR_STOP=1 <<'SQL'
-
--- 使用匿名代码块批量处理分区创建与索引迁移
-DO $$
-DECLARE
-  d date;          -- 循环日期（从今天到未来 29 天）
-  pname text;      -- 分区表名，例如 heartbeat_events_20260303
-  start_ms bigint; -- 分区起始毫秒时间戳（UTC，含）
-  end_ms bigint;   -- 分区结束毫秒时间戳（UTC，不含）
-  idx record;      -- 遍历分区索引时的游标记录
-BEGIN
-  -- 生成从 current_date 到 current_date+29 的日期序列（共 30 天）
-  FOR d IN
-    SELECT generate_series(current_date, current_date + 29, interval '1 day')::date
-  LOOP
-    -- 按约定命名分区名：heartbeat_events_YYYYMMDD
-    pname := format('heartbeat_events_%s', to_char(d, 'YYYYMMDD'));
-
-    -- 计算该日期 00:00:00 UTC 的毫秒时间戳作为分区下界
-    start_ms := (extract(epoch from (d::timestamp at time zone 'UTC')) * 1000)::bigint;
-
-    -- 计算下一天 00:00:00 UTC 的毫秒时间戳作为分区上界
-    end_ms := (extract(epoch from ((d + 1)::timestamp at time zone 'UTC')) * 1000)::bigint;
-
-    -- 若分区不存在则创建；存在则跳过（幂等）
-    EXECUTE format(
-      'CREATE TABLE IF NOT EXISTS heartbeat.%I PARTITION OF heartbeat.heartbeat_events FOR VALUES FROM (%s) TO (%s) TABLESPACE ts_hot',
-      pname, start_ms, end_ms
-    );
-
-    -- 无论新建或已存在，强制把分区表迁移到 ts_hot（保证热分区落热盘）
-    EXECUTE format('ALTER TABLE heartbeat.%I SET TABLESPACE ts_hot', pname);
-
-    -- 遍历该分区的全部索引，筛出不在 ts_hot 的索引
-    FOR idx IN
-      SELECT idxn.nspname AS index_schema, i.relname AS index_name
-      FROM pg_index x
-      JOIN pg_class t ON t.oid = x.indrelid
-      JOIN pg_namespace nt ON nt.oid = t.relnamespace
-      JOIN pg_class i ON i.oid = x.indexrelid
-      JOIN pg_namespace idxn ON idxn.oid = i.relnamespace
-      LEFT JOIN pg_tablespace ts ON ts.oid = i.reltablespace
-      WHERE nt.nspname = 'heartbeat'
-        AND t.relname = pname
-        AND COALESCE(ts.spcname, 'pg_default') <> 'ts_hot'
-    LOOP
-      -- 将索引迁移到 ts_hot，确保“分区与索引同盘”
-      EXECUTE format('ALTER INDEX %I.%I SET TABLESPACE ts_hot', idx.index_schema, idx.index_name);
-    END LOOP;
-  END LOOP;
-END $$;
-
--- here-doc 结束标记
-SQL
\ No newline at end of file
diff --git a/openspec/changes/add-g4-hot-dual-write/design.md b/openspec/changes/add-g4-hot-dual-write/design.md
new file mode 100644
index 0000000..e89fd9c
--- /dev/null
+++ b/openspec/changes/add-g4-hot-dual-write/design.md
@@ -0,0 +1,76 @@
+## Context
+当前系统只有一个明细写入目标 `heartbeat.heartbeat_events`。需要新增 `heartbeat.heartbeat_events_g4_hot` 作为第二个独立写入目标，两路完全解耦，支持平滑迁移。
+
+约束：
+- 同一 PostgreSQL 实例/数据库，共享同一连接池
+- 数据来源（Kafka）、解包、校验、转换逻辑完全不变
+- `room_status` 始终独立执行，不依赖任何明细写入
+- 错误表仅服务新表写入失败
+
+## Goals / Non-Goals
+- Goals:
+  - 旧/新明细表可通过启动配置独立开关
+  - 新表复用现有批量 COPY 写入内核
+  - 两路写入互不影响（错误隔离、重试隔离、fallback 隔离）
+  - `room_status` 始终执行，不受明细开关影响
+  - 错误表仅记录新表失败
+  - 支持"旧开新关 → 双开 → 关旧留新"迁移路径
+
+- Non-Goals:
+  - 不引入第二套 PostgreSQL 连接配置（同库新表）
+  - 不改变 Kafka 消费链路、消息格式、数据转换
+  - 不做运行时热开关（重启生效即可）
+  - 不在本次改造中删除旧表相关代码
+
+## Decisions
+
+### Decision 1: 共享连接池，不新建第二个 Pool
+- **What**: 旧表和新表都使用同一个 `pg.Pool`
+- **Why**: 两个目标表在同一 PostgreSQL 实例/数据库下，共享连接池避免资源浪费
+- **Alternatives**: 为新表创建独立连接池 → 复杂度高，同库下无必要
+
+### Decision 2: 抽象通用写入内核而非复制代码
+- **What**: 把现有 `insertHeartbeatEvents()` 中与表名绑定的逻辑抽象为 `_insertEventsToTarget(events, targetConfig)`
+- **Why**: 避免维护两份几乎相同的 COPY/INSERT 代码；新表和旧表的列清单不同但写入流程一致
+- **Alternatives**: 复制一份改表名 → 双维护成本高
+
+### Decision 3: 编排层聚合结果，Processor 不感知双写细节
+- **What**: `DatabaseManager.insertHeartbeatEventsDual()` 负责编排两路写入并聚合结果；`HeartbeatProcessor` 只消费聚合结果
+- **Why**: 保持 Processor 职责单一，不引入 DB 路由逻辑
+
+### Decision 4: room_status 独立于明细写入
+- **What**: `upsertRoomStatus()` 始终在 `processBatch()` 中独立执行，不依赖旧/新明细写入成功
+- **Why**: 用户明确要求即使两路明细都关闭，仍需写 `room_status`
+
+### Decision 5: 错误表仅服务新表
+- **What**: `insertHeartbeatEventsErrors()` 仅接收新表 (`g4Hot`) 写入失败的记录
+- **Why**: 旧表即将下线，错误追踪聚焦新表；旧表失败仅记日志/统计
+
+### Decision 6: 消费暂停基于"启用中的关键 sink"
+- **What**: 只有当前启用的写入路径全部发生连接级不可恢复故障时，才暂停 Kafka 消费
+- **Why**: 避免新表结构/权限问题误停全局消费
+
+## Risks / Trade-offs
+
+### Risk 1: 新表列映射不完整
+- 新表字段比旧表更宽，旧数据可能缺少部分新表列（如 `svc_*`, `*_1`, `*_2`, `*_residual`, `guid`）
+- **Mitigation**: 旧数据确认可完整映射到新表必填字段与唯一键；新增列允许 NULL 或有默认值
+
+### Risk 2: 同库双写增加连接池压力
+- 单批数据写两次，连接池使用量翻倍
+- **Mitigation**: 两路顺序执行而非并发，复用同一连接池；必要时可调大 `maxConnections`
+
+### Risk 3: 新表分区函数可能与旧表不同
+- `heartbeat.ensure_partitions` 是否也涵盖新表的分区维护
+- **Mitigation**: 实现时需确认分区保障函数对新表的覆盖，或为新表配置独立的分区保障调用
+
+## Migration Plan
+1. 部署代码，保持 `DB_LEGACY_HEARTBEAT_ENABLED=true`、`DB_G4_HOT_HEARTBEAT_ENABLED=false`
+2. 验证旧模式下行为不变
+3. 开启 `DB_G4_HOT_HEARTBEAT_ENABLED=true`，双写观测
+4. 确认新表写入稳定后，关闭 `DB_LEGACY_HEARTBEAT_ENABLED=false`
+5. 过渡观察期后清理旧表相关配置
+
+## Open Questions
+- 新表 `heartbeat.heartbeat_events_g4_hot` 的分区预创建是否由同一个 `heartbeat.ensure_partitions` 函数覆盖？还是需要独立的分区保障函数？
+- 新表的 `guid` 列是否需要在写入时由应用层生成？还是有数据库默认值？
diff --git a/openspec/changes/add-g4-hot-dual-write/proposal.md b/openspec/changes/add-g4-hot-dual-write/proposal.md
new file mode 100644
index 0000000..fff09c5
--- /dev/null
+++ b/openspec/changes/add-g4-hot-dual-write/proposal.md
@@ -0,0 +1,25 @@
+# Change: 新增 G4 热表独立双写能力
+
+## Why
+当前系统仅写入旧明细表 `heartbeat.heartbeat_events`。需要新增对 `heartbeat.heartbeat_events_g4_hot` 的独立写入能力，两路写入完全解耦、可分别开关，支持后续平滑关闭旧表、仅保留新表。
+
+## What Changes
+- 新增配置项：旧/新明细表写入开关、目标表名、`room_status` 独立开关
+- 重构 `DatabaseManager`：抽象通用批量 COPY 写入内核，支持面向不同目标表的复用
+- 新增双明细写入编排器：旧/新表各自独立执行、独立重试、独立 fallback
+- 调整 `HeartbeatProcessor.processBatch()`：`room_status` 从"依赖旧表成功"改为"始终独立执行"
+- 错误表 `heartbeat_events_errors` 仅记录新表写入失败，旧表失败不再写错误表
+- 重新定义消费暂停策略：基于"当前启用的关键 sink"判断，非全局一刀切
+- 补充按 sink 维度的统计项与启动日志
+
+## Impact
+- Affected specs: `db`, `processor`
+- Affected code:
+  - `src/config/config.js` — 新增配置项
+  - `src/db/databaseManager.js` — 核心重构
+  - `src/processor/heartbeatProcessor.js` — 主流程调整
+  - `src/index.js` — 启动日志
+  - `src/stats/statsManager.js` — 统计项
+  - `src/config/config.example.js` — 配置示例
+- No breaking changes to external APIs or Kafka consumer behavior
+- Data source and transformation logic remain unchanged
diff --git a/openspec/changes/add-g4-hot-dual-write/specs/db/spec.md b/openspec/changes/add-g4-hot-dual-write/specs/db/spec.md
new file mode 100644
index 0000000..483b120
--- /dev/null
+++ b/openspec/changes/add-g4-hot-dual-write/specs/db/spec.md
@@ -0,0 +1,129 @@
+## ADDED Requirements
+
+### Requirement: G4 热表独立写入能力
+系统 SHALL 支持向 `heartbeat.heartbeat_events_g4_hot` 分区表执行批量 COPY 写入，写入内核（COPY 流式写入、失败逐条 INSERT 降级）SHALL 与旧表 `heartbeat.heartbeat_events` 共享同一套通用实现。
+
+#### Scenario: G4 热表批量 COPY 写入
+- **WHEN** `g4HotHeartbeatEnabled=true` 且有一批心跳数据待写入
+- **THEN** 系统应使用批量 COPY 将数据写入 `heartbeat.heartbeat_events_g4_hot`
+- **AND** 写入流程应与旧表共享同一通用写入内核
+
+#### Scenario: G4 热表分区由外部维护
+- **WHEN** 写入 `heartbeat.heartbeat_events_g4_hot`
+- **THEN** 系统不应在运行时为该表执行分区预创建、缺分区补建或其他分区维护逻辑
+- **AND** 分区应由外部脚本或外部调度系统维护
+
+#### Scenario: G4 热表 COPY 失败降级
+- **WHEN** G4 热表批量 COPY 写入失败且重试次数耗尽
+- **THEN** 系统应降级为逐条 INSERT 写入
+- **AND** 单条失败不影响同批次其他记录
+
+### Requirement: G4 热表 guid 写入规则
+系统 SHALL 在写入 `heartbeat.heartbeat_events_g4_hot` 时为每条记录提供 `guid` 字段值，格式为无连接符的小写 GUID。
+
+#### Scenario: 缺失 guid 时自动生成
+- **WHEN** 待写入记录未提供 `guid`
+- **THEN** 系统应为该记录生成一个新的 GUID
+- **AND** 生成结果应为 32 位十六进制小写字符串
+- **AND** 结果中不应包含 `-`
+
+#### Scenario: 已提供 guid 时规范化
+- **WHEN** 待写入记录已提供 `guid`
+- **THEN** 系统应将该值转换为小写
+- **AND** 应去除其中的 `-`
+- **AND** 规范化后的值应写入 `heartbeat.heartbeat_events_g4_hot`
+
+### Requirement: G4 热表 power 辅助字段当前阶段写空
+系统 SHALL 在当前阶段将 `power_carbon_on`、`power_carbon_off`、`power_person_exist`、`power_person_left` 固定写为 `null`，待后续计算逻辑接入后再启用实际赋值。
+
+#### Scenario: 当前阶段统一写 null
+- **WHEN** 系统写入 `heartbeat.heartbeat_events_g4_hot`
+- **THEN** `power_carbon_on` 应写入 `null`
+- **AND** `power_carbon_off` 应写入 `null`
+- **AND** `power_person_exist` 应写入 `null`
+- **AND** `power_person_left` 应写入 `null`
+- **AND** 不应从来源数据的 `extra` 或其他字段提取这 4 个值
+
+### Requirement: 双明细独立编排
+系统 SHALL 提供双明细写入编排能力，按启动配置分别控制旧表与 G4 热表的写入，两路写入结果完全独立。
+
+#### Scenario: 仅旧表开启
+- **WHEN** `legacyHeartbeatEnabled=true` 且 `g4HotHeartbeatEnabled=false`
+- **THEN** 系统应仅写入旧表 `heartbeat.heartbeat_events`
+- **AND** 不应尝试写入 G4 热表
+
+#### Scenario: 仅新表开启
+- **WHEN** `legacyHeartbeatEnabled=false` 且 `g4HotHeartbeatEnabled=true`
+- **THEN** 系统应仅写入 G4 热表 `heartbeat.heartbeat_events_g4_hot`
+- **AND** 不应尝试写入旧表
+
+#### Scenario: 双写模式
+- **WHEN** `legacyHeartbeatEnabled=true` 且 `g4HotHeartbeatEnabled=true`
+- **THEN** 系统应分别写入旧表与 G4 热表
+- **AND** 旧表写入失败不影响 G4 热表写入
+- **AND** G4 热表写入失败不影响旧表写入
+
+#### Scenario: 双关模式
+- **WHEN** `legacyHeartbeatEnabled=false` 且 `g4HotHeartbeatEnabled=false`
+- **THEN** 系统应跳过所有明细写入
+- **AND** 不应报错或阻止消费
+
+### Requirement: 写入目标启动配置
+系统 SHALL 通过启动配置（环境变量）分别控制旧表、G4 热表和 room_status 的写入开关与目标表名。
+
+#### Scenario: 配置加载
+- **WHEN** 系统启动时
+- **THEN** 应从环境变量读取 `DB_LEGACY_HEARTBEAT_ENABLED`（默认 true）、`DB_G4_HOT_HEARTBEAT_ENABLED`（默认 false）、`DB_ROOM_STATUS_ENABLED`（默认 true）
+- **AND** 应从环境变量读取 `DB_LEGACY_TABLE`（默认 `heartbeat.heartbeat_events`）、`DB_G4_HOT_TABLE`（默认 `heartbeat.heartbeat_events_g4_hot`）
+
+#### Scenario: 启动日志输出配置摘要
+- **WHEN** 系统启动完成时
+- **THEN** 应在日志中输出旧/新明细写入开关状态、目标表名和 room_status 开关状态
+
+### Requirement: 错误表仅服务 G4 热表
+系统 SHALL 将 `heartbeat.heartbeat_events_errors` 仅用于记录 G4 热表写入失败的记录，旧表写入失败不写入错误表。
+
+#### Scenario: G4 热表写入失败记录错误
+- **WHEN** G4 热表写入产生失败记录
+- **THEN** 系统应将失败记录写入 `heartbeat.heartbeat_events_errors`
+- **AND** 错误表字段和结构不变
+
+#### Scenario: 旧表写入失败不记录错误表
+- **WHEN** 旧表写入产生失败记录
+- **THEN** 系统不应将失败记录写入 `heartbeat.heartbeat_events_errors`
+- **AND** 应仅记录日志/统计
+
+## MODIFIED Requirements
+
+### Requirement: 心跳数据写入
+系统 MUST 能够将处理后的心跳数据写入 PostgreSQL 数据库，支持多目标表独立写入。
+
+#### Scenario: 写入单条心跳数据
+- **WHEN** 接收到单条处理后的心跳数据时
+- **THEN** 系统应该将数据写入已启用的目标表
+- **AND** 返回写入结果
+
+#### Scenario: 批量写入心跳数据
+- **WHEN** 接收到批量处理后的心跳数据时
+- **THEN** 系统应该对每个已启用的目标表使用批量 COPY 写入机制
+- **AND** 各目标表写入结果独立
+- **AND** 提高写入效率
+
+### Requirement: 数据库连接管理
+系统 MUST 能够建立和维护与 PostgreSQL 数据库的连接。
+
+#### Scenario: 成功连接数据库
+- **WHEN** 系统启动时
+- **THEN** 应该成功连接到配置的PostgreSQL数据库
+- **AND** 应该监控连接状态
+
+#### Scenario: 数据库连接断开重连
+- **WHEN** 数据库连接断开时
+- **THEN** 系统应该自动尝试重连
+- **AND** 重连失败时应该记录错误日志
+
+#### Scenario: 消费暂停判定
+- **WHEN** 当前启用的明细写入目标全部因连接级不可恢复故障不可写时
+- **THEN** 系统应暂停 Kafka 消费
+- **WHEN** 仅某一路非关键 sink 失败（如新表结构错误）
+- **THEN** 系统不应暂停全局消费
diff --git a/openspec/changes/add-g4-hot-dual-write/specs/processor/spec.md b/openspec/changes/add-g4-hot-dual-write/specs/processor/spec.md
new file mode 100644
index 0000000..2c0d5fb
--- /dev/null
+++ b/openspec/changes/add-g4-hot-dual-write/specs/processor/spec.md
@@ -0,0 +1,52 @@
+## MODIFIED Requirements
+
+### Requirement: 心跳数据转换
+系统 MUST 在批次处理中始终独立执行 room_status 同步，不依赖任何明细写入的成功与否。
+
+#### Scenario: room_status 始终独立执行
+- **WHEN** 一批心跳数据完成验证与转换
+- **THEN** 系统应始终调用 room_status 的 upsert 同步逻辑（当 `roomStatusEnabled=true`）
+- **AND** 不依赖旧表明细写入是否开启
+- **AND** 不依赖新表明细写入是否开启
+- **AND** 不依赖旧/新表写入是否成功
+- **AND** 同步失败不应阻塞主处理流程
+
+#### Scenario: 明细双关仍写 room_status
+- **WHEN** `legacyHeartbeatEnabled=false` 且 `g4HotHeartbeatEnabled=false` 且 `roomStatusEnabled=true`
+- **THEN** 系统仍应对当前批次数据执行 room_status upsert
+- **AND** Kafka 消费不应因明细双关而暂停
+
+### Requirement: 批量写库容错
+系统 MUST 在批量写库时确保单条失败不影响同批次其他记录的写入，且区分旧/新目标的失败处理路径。
+
+#### Scenario: 单条数据写库失败不影响同批次
+- **WHEN** 批量写库中存在某条记录违反约束或写入失败
+- **THEN** 系统应继续写入同批次其他合法记录
+- **AND** 失败记录应按错误日志规则写入 Redis 项目控制台
+
+#### Scenario: 新表失败记录写入错误表
+- **WHEN** G4 热表批量写入中存在失败记录
+- **THEN** 系统应将失败记录写入 `heartbeat.heartbeat_events_errors`
+
+#### Scenario: 旧表失败记录不写入错误表
+- **WHEN** 旧表批量写入中存在失败记录
+- **THEN** 系统不应将失败记录写入 `heartbeat.heartbeat_events_errors`
+- **AND** 应仅记录日志与统计
+
+## ADDED Requirements
+
+### Requirement: 按 sink 维度的统计与监控
+系统 SHALL 按写入目标维度分别统计成功数、失败数与降级事件。
+
+#### Scenario: legacy 与 g4Hot 分别统计
+- **WHEN** 系统完成一批次的双写编排
+- **THEN** 应分别统计 legacy 写入成功数、失败数
+- **AND** 应分别统计 g4Hot 写入成功数、失败数
+- **AND** 统计项应在 Redis 控制台输出或 stats 汇总中可见
+
+#### Scenario: 启动时输出双写配置摘要
+- **WHEN** 服务完成数据库连接并进入启动阶段
+- **THEN** 系统应输出双写配置摘要
+- **AND** 摘要中应包含 legacy 开关与目标表
+- **AND** 摘要中应包含 g4Hot 开关与目标表
+- **AND** 摘要中应包含 room_status 开关
diff --git a/openspec/changes/add-g4-hot-dual-write/tasks.md b/openspec/changes/add-g4-hot-dual-write/tasks.md
new file mode 100644
index 0000000..5629213
--- /dev/null
+++ b/openspec/changes/add-g4-hot-dual-write/tasks.md
@@ -0,0 +1,28 @@
+## 1. Configuration
+- [x] 1.1 在 `src/config/config.js` 新增旧/新明细写入开关、目标表名、`room_status` 独立开关配置
+- [x] 1.2 在 `src/config/config.example.js` 同步新增对应示例配置
+
+## 2. Database Layer Refactor
+- [x] 2.1 抽象通用批量 COPY 写入内核 `_insertEventsToTarget(events, targetConfig)`，支持接收目标表名、列清单、日志前缀等参数
+- [x] 2.2 将旧表 `insertHeartbeatEvents()` 迁移为调用通用内核，保证旧逻辑行为不变
+- [x] 2.3 新增新表 `heartbeat.heartbeat_events_g4_hot` 的目标配置与列映射
+- [x] 2.4 新增双明细独立编排方法 `insertHeartbeatEventsDual(events)`，按配置分别调用旧/新 writer，聚合返回结构化结果
+
+## 3. Processor Flow Adjustment
+- [x] 3.1 调整 `HeartbeatProcessor.processBatch()` 调用链：改用 `insertHeartbeatEventsDual()` 替代原 `insertHeartbeatEvents()`
+- [x] 3.2 将 `upsertRoomStatus()` 从"依赖旧表成功"改为"独立执行"——无论旧/新明细开关状态如何，只要 `roomStatusEnabled=true` 就始终执行
+- [x] 3.3 调整错误表调用：仅将新表 (`g4Hot`) 失败记录送入 `insertHeartbeatEventsErrors()`，旧表失败不写错误表
+
+## 4. Connection & Pause Strategy
+- [x] 4.1 重构消费暂停判定：基于"当前启用的 sink 是否全部连接级不可写"，而非单一旧表状态
+- [x] 4.2 区分连接错误与表级错误，避免新表结构问题误触发全局暂停
+
+## 5. Observability
+- [x] 5.1 在 `src/index.js` 启动时输出双写配置摘要（旧/新开关状态、目标表名、`room_status` 开关）
+- [x] 5.2 在 `src/stats/statsManager.js` 新增按 sink 维度的统计项（legacy/g4Hot 成功数、失败数、room_status 成功/失败数）
+
+## 6. Testing
+- [x] 6.1 补充 `databaseManager` 双写编排单元测试（仅旧、仅新、双开、双关、交叉失败等场景）
+- [x] 6.2 补充 `room_status` 独立性断言测试
+- [x] 6.3 补充错误表仅接新表失败的断言测试
+- [x] 6.4 补充/扩展数据库 smoke 验证脚本，覆盖新表写入、分区、索引验证
diff --git a/openspec/specs/db/spec.md b/openspec/specs/db/spec.md
index d8e915a..44cf7a1 100644
--- a/openspec/specs/db/spec.md
+++ b/openspec/specs/db/spec.md
@@ -102,6 +102,99 @@
 - **AND** 调用后应重试当前批次写入
 - **AND** 系统不应在运行时创建或替换数据库 schema 对象
 
+### Requirement: G4 热表独立写入能力
+系统 MUST 支持向 `heartbeat.heartbeat_events_g4_hot` 分区表执行批量 COPY 写入，并与旧表 `heartbeat.heartbeat_events` 共享同一套通用写入内核。
+
+#### Scenario: G4 热表批量 COPY 写入
+- **WHEN** `g4HotHeartbeatEnabled=true` 且有一批心跳数据待写入
+- **THEN** 系统应使用批量 COPY 将数据写入 `heartbeat.heartbeat_events_g4_hot`
+- **AND** 写入流程应与旧表共享同一通用写入内核
+
+#### Scenario: G4 热表分区由外部维护
+- **WHEN** 写入 `heartbeat.heartbeat_events_g4_hot`
+- **THEN** 系统不应在运行时为该表执行分区预创建、缺分区补建或其他分区维护逻辑
+- **AND** 分区应由外部脚本或外部调度系统维护
+
+#### Scenario: G4 热表 COPY 失败降级
+- **WHEN** G4 热表批量 COPY 写入失败且重试次数耗尽
+- **THEN** 系统应降级为逐条 INSERT 写入
+- **AND** 单条失败不影响同批次其他记录
+
+### Requirement: G4 热表 guid 写入规则
+系统 MUST 在写入 `heartbeat.heartbeat_events_g4_hot` 时为每条记录提供 `guid` 字段值，格式为无连接符的小写 GUID。
+
+#### Scenario: 缺失 guid 时自动生成
+- **WHEN** 待写入记录未提供 `guid`
+- **THEN** 系统应为该记录生成一个新的 GUID
+- **AND** 生成结果应为 32 位十六进制小写字符串
+- **AND** 结果中不应包含 `-`
+
+#### Scenario: 已提供 guid 时规范化
+- **WHEN** 待写入记录已提供 `guid`
+- **THEN** 系统应将该值转换为小写
+- **AND** 应去除其中的 `-`
+- **AND** 规范化后的值应写入 `heartbeat.heartbeat_events_g4_hot`
+
+### Requirement: G4 热表 power 辅助字段当前阶段写空
+系统 MUST 在当前阶段将 `power_carbon_on`、`power_carbon_off`、`power_person_exist`、`power_person_left` 固定写为 `null`，待后续计算逻辑接入后再启用实际赋值。
+
+#### Scenario: 当前阶段统一写 null
+- **WHEN** 系统写入 `heartbeat.heartbeat_events_g4_hot`
+- **THEN** `power_carbon_on` 应写入 `null`
+- **AND** `power_carbon_off` 应写入 `null`
+- **AND** `power_person_exist` 应写入 `null`
+- **AND** `power_person_left` 应写入 `null`
+- **AND** 不应从来源数据的 `extra` 或其他字段提取这 4 个值
+
+### Requirement: 双明细独立编排
+系统 MUST 提供双明细写入编排能力，按启动配置分别控制旧表与 G4 热表的写入，两路写入结果完全独立。
+
+#### Scenario: 仅旧表开启
+- **WHEN** `legacyHeartbeatEnabled=true` 且 `g4HotHeartbeatEnabled=false`
+- **THEN** 系统应仅写入旧表 `heartbeat.heartbeat_events`
+- **AND** 不应尝试写入 G4 热表
+
+#### Scenario: 仅新表开启
+- **WHEN** `legacyHeartbeatEnabled=false` 且 `g4HotHeartbeatEnabled=true`
+- **THEN** 系统应仅写入 G4 热表 `heartbeat.heartbeat_events_g4_hot`
+- **AND** 不应尝试写入旧表
+
+#### Scenario: 双写模式
+- **WHEN** `legacyHeartbeatEnabled=true` 且 `g4HotHeartbeatEnabled=true`
+- **THEN** 系统应分别写入旧表与 G4 热表
+- **AND** 旧表写入失败不影响 G4 热表写入
+- **AND** G4 热表写入失败不影响旧表写入
+
+#### Scenario: 双关模式
+- **WHEN** `legacyHeartbeatEnabled=false` 且 `g4HotHeartbeatEnabled=false`
+- **THEN** 系统应跳过所有明细写入
+- **AND** 不应报错或阻止消费
+
+### Requirement: 写入目标启动配置
+系统 MUST 通过启动配置（环境变量）分别控制旧表、G4 热表和 room_status 的写入开关与目标表名。
+
+#### Scenario: 配置加载
+- **WHEN** 系统启动时
+- **THEN** 应从环境变量读取 `DB_LEGACY_HEARTBEAT_ENABLED`（默认 true）、`DB_G4_HOT_HEARTBEAT_ENABLED`（默认 false）、`DB_ROOM_STATUS_ENABLED`（默认 true）
+- **AND** 应从环境变量读取 `DB_LEGACY_TABLE`（默认 `heartbeat.heartbeat_events`）、`DB_G4_HOT_TABLE`（默认 `heartbeat.heartbeat_events_g4_hot`）
+
+#### Scenario: 启动日志输出配置摘要
+- **WHEN** 系统启动完成时
+- **THEN** 应在日志中输出旧/新明细写入开关状态、目标表名和 room_status 开关状态
+
+### Requirement: 错误表仅服务 G4 热表
+系统 MUST 将 `heartbeat.heartbeat_events_errors` 仅用于记录 G4 热表写入失败的记录，旧表写入失败不写入错误表。
+
+#### Scenario: G4 热表写入失败记录错误
+- **WHEN** G4 热表写入产生失败记录
+- **THEN** 系统应将失败记录写入 `heartbeat.heartbeat_events_errors`
+- **AND** 错误表字段和结构不变
+
+#### Scenario: 旧表写入失败不记录错误表
+- **WHEN** 旧表写入产生失败记录
+- **THEN** 系统不应将失败记录写入 `heartbeat.heartbeat_events_errors`
+- **AND** 应仅记录日志/统计
+
 ### Requirement: 建库与分区维护能力必须以外部脚本提供
 系统 MUST 在仓库根目录 `SQL_Script/` 提供可被外部程序调用的建库/分区维护脚本。
 
diff --git a/openspec/specs/processor/spec.md b/openspec/specs/processor/spec.md
index 9c32f32..8a4a7b7 100644
--- a/openspec/specs/processor/spec.md
+++ b/openspec/specs/processor/spec.md
@@ -94,6 +94,50 @@
 - **THEN** 系统应继续写入同批次其他合法记录
 - **AND** 失败记录应按错误日志规则写入 Redis 项目控制台
 
+### Requirement: room_status 独立执行
+系统 MUST 在批次处理中始终独立执行 room_status 同步，不依赖任何明细写入的成功与否。
+
+#### Scenario: room_status 始终独立执行
+- **WHEN** 一批心跳数据完成验证与转换
+- **THEN** 系统应始终调用 room_status 的 upsert 同步逻辑（当 `roomStatusEnabled=true`）
+- **AND** 不依赖旧表明细写入是否开启
+- **AND** 不依赖新表明细写入是否开启
+- **AND** 不依赖旧/新表写入是否成功
+- **AND** 同步失败不应阻塞主处理流程
+
+#### Scenario: 明细双关仍写 room_status
+- **WHEN** `legacyHeartbeatEnabled=false` 且 `g4HotHeartbeatEnabled=false` 且 `roomStatusEnabled=true`
+- **THEN** 系统仍应对当前批次数据执行 room_status upsert
+- **AND** Kafka 消费不应因明细双关而暂停
+
+### Requirement: 区分旧新目标失败处理
+系统 MUST 在批量写库时区分旧表与 G4 热表的失败处理路径。
+
+#### Scenario: 新表失败记录写入错误表
+- **WHEN** G4 热表批量写入中存在失败记录
+- **THEN** 系统应将失败记录写入 `heartbeat.heartbeat_events_errors`
+
+#### Scenario: 旧表失败记录不写入错误表
+- **WHEN** 旧表批量写入中存在失败记录
+- **THEN** 系统不应将失败记录写入 `heartbeat.heartbeat_events_errors`
+- **AND** 应仅记录日志与统计
+
+### Requirement: 按 sink 维度的统计与监控
+系统 MUST 按写入目标维度分别统计成功数、失败数与降级事件。
+
+#### Scenario: legacy 与 g4Hot 分别统计
+- **WHEN** 系统完成一批次的双写编排
+- **THEN** 应分别统计 legacy 写入成功数、失败数
+- **AND** 应分别统计 g4Hot 写入成功数、失败数
+- **AND** 统计项应在 Redis 控制台输出或 stats 汇总中可见
+
+#### Scenario: 启动时输出双写配置摘要
+- **WHEN** 服务完成数据库连接并进入启动阶段
+- **THEN** 系统应输出双写配置摘要
+- **AND** 摘要中应包含 legacy 开关与目标表
+- **AND** 摘要中应包含 g4Hot 开关与目标表
+- **AND** 摘要中应包含 room_status 开关
+
 ## ADDED Requirements
 ### Requirement: 数组字段聚合为列数组
 系统 SHALL �?`electricity[]` �?`air_conditioner[]` 按原始顺序聚合为数据库写入结构的列数组�?
diff --git a/scripts/db/smokeG4Hot.js b/scripts/db/smokeG4Hot.js
new file mode 100644
index 0000000..91bf344
--- /dev/null
+++ b/scripts/db/smokeG4Hot.js
@@ -0,0 +1,182 @@
+import { Client } from 'pg';
+import config from '../../src/config/config.js';
+import { DatabaseManager } from '../../src/db/databaseManager.js';
+
+async function main() {
+  const client = new Client({
+    host: config.db.host,
+    port: config.db.port,
+    user: config.db.user,
+    password: config.db.password,
+    database: config.db.database,
+  });
+
+  await client.connect();
+  console.log('=== G4 Hot Smoke Test ===\n');
+
+  // 1. 检查新表是否存在
+  const tableExists = await client.query(
+    `SELECT 1 FROM pg_class c
+     JOIN pg_namespace n ON n.oid = c.relnamespace
+     WHERE n.nspname = 'heartbeat' AND c.relname = 'heartbeat_events_g4_hot'`
+  );
+  if (tableExists.rowCount === 0) {
+    console.error('FAIL: heartbeat.heartbeat_events_g4_hot 表不存在');
+    process.exit(1);
+  }
+  console.log('[OK] 新表 heartbeat_events_g4_hot 已存在');
+
+  // 2. 检查分区表类型
+  const parentKind = await client.query(
+    `SELECT c.relkind AS kind FROM pg_class c
+     JOIN pg_namespace n ON n.oid = c.relnamespace
+     WHERE n.nspname = 'heartbeat' AND c.relname = 'heartbeat_events_g4_hot'`
+  );
+  const kind = parentKind.rows?.[0]?.kind;
+  console.log('[INFO] 父表 relkind:', kind, kind === 'p' ? '(分区表)' : '(非分区表)');
+
+  // 3. 列出已有分区
+  const partitions = await client.query(
+    `SELECT c.relname AS partition
+     FROM pg_inherits i
+     JOIN pg_class c ON c.oid = i.inhrelid
+     JOIN pg_class p ON p.oid = i.inhparent
+     JOIN pg_namespace n ON n.oid = p.relnamespace
+     WHERE n.nspname = 'heartbeat' AND p.relname = 'heartbeat_events_g4_hot'
+     ORDER BY c.relname`
+  );
+  console.log('[INFO] 现有分区:', partitions.rows.map((r) => r.partition));
+
+  // 4. 检查唯一索引
+  const indexes = await client.query(
+    `SELECT indexname, indexdef FROM pg_indexes
+     WHERE schemaname = 'heartbeat' AND tablename = 'heartbeat_events_g4_hot'
+     ORDER BY indexname`
+  );
+  console.log('[INFO] 索引:');
+  for (const r of indexes.rows) {
+    console.log('  -', r.indexname);
+  }
+
+  // 5. 使用 DatabaseManager 验证 COPY 写入
+  const dm = new DatabaseManager({ ...config.db, maxConnections: 1, g4HotHeartbeatEnabled: true });
+  await dm.connect();
+
+  const ts = Date.now();
+  const testEvent = {
+    ts_ms: ts,
+    hotel_id: 1,
+    room_id: '101',
+    device_id: 'smoke-g4hot-test',
+    ip: '10.0.0.1',
+    power_state: 1,
+    guest_type: 0,
+    cardless_state: 0,
+    service_mask: 7, // bits 0,1,2
+    pms_state: 1,
+    carbon_state: 0,
+    device_count: 2,
+    comm_seq: 1,
+    insert_card: null,
+    bright_g: 50,
+    version: 1,
+    elec_address: ['e1', 'e2'],
+    air_address: ['ac1', 'ac2', 'ac3'],
+    voltage: [220.1, 220.2],
+    ampere: [1.1, 1.2],
+    power: [242.0, 264.0],
+    phase: ['A', 'B'],
+    energy: [10.5, 11.5],
+    sum_energy: [100.1, 200.2],
+    state: [1, 2, 3],
+    model: [1, 1, 2],
+    speed: [3, 3, 1],
+    set_temp: [26, 25, 24],
+    now_temp: [27, 26, 25],
+    solenoid_valve: [1, 0, 1],
+    extra: { source: 'smoke-g4hot', power_carbon_on: 1.5, power_person_exist: 2.5 },
+  };
+
+  try {
+    const result = await dm._insertEventsToTarget([testEvent], {
+      tableName: config.db.g4HotTable ?? 'heartbeat.heartbeat_events_g4_hot',
+      columns: dm._getG4HotColumns(),
+      toRowValues: (e) => dm._g4HotToRowValues(e),
+      ensurePartitions: false,
+      logPrefix: '[g4hot-smoke]',
+      missingPartitionTable: null,
+    });
+
+    if (result.success) {
+      console.log(`[OK] G4 Hot COPY 写入成功: ${result.insertedCount} 条`);
+    } else {
+      console.error('[FAIL] G4 Hot COPY 写入失败:', result.error?.message);
+      if (result.error?.message?.includes('no partition')) {
+        console.error('  说明: 新表当日分区尚未创建，请先创建分区');
+      }
+    }
+  } catch (err) {
+    console.error('[FAIL] G4 Hot 写入异常:', err.message);
+  }
+
+  // 6. 验证写入的数据
+  try {
+    const readback = await client.query(
+      `SELECT svc_01, svc_02, svc_03, svc_04,
+              air_address_1, air_address_2, air_address_residual,
+              elec_address_1, elec_address_2,
+              power_carbon_on, power_person_exist, guid
+       FROM heartbeat.heartbeat_events_g4_hot
+       WHERE device_id = 'smoke-g4hot-test' AND ts_ms = $1`,
+      [ts]
+    );
+    if (readback.rowCount > 0) {
+      const row = readback.rows[0];
+      console.log('[OK] 数据回读成功:');
+      console.log('  svc_01:', row.svc_01, '(期望 true)');
+      console.log('  svc_02:', row.svc_02, '(期望 true)');
+      console.log('  svc_03:', row.svc_03, '(期望 true)');
+      console.log('  svc_04:', row.svc_04, '(期望 false)');
+      console.log('  air_address_1:', row.air_address_1, '(期望 ac1)');
+      console.log('  air_address_2:', row.air_address_2, '(期望 ac2)');
+      console.log('  air_address_residual:', row.air_address_residual, '(期望 [ac3])');
+      console.log('  elec_address_1:', row.elec_address_1, '(期望 e1)');
+      console.log('  elec_address_2:', row.elec_address_2, '(期望 e2)');
+      console.log('  power_carbon_on:', row.power_carbon_on, '(期望 1.5)');
+      console.log('  power_person_exist:', row.power_person_exist, '(期望 2.5)');
+      console.log('  guid:', row.guid, '(期望 32 位无连接符小写)');
+    } else {
+      console.warn('[WARN] 未读回数据（可能因分区缺失而写入失败）');
+    }
+  } catch (err) {
+    console.warn('[WARN] 数据回读失败:', err.message);
+  }
+
+  // 7. 清理测试数据
+  try {
+    await client.query(
+      `DELETE FROM heartbeat.heartbeat_events_g4_hot WHERE device_id = 'smoke-g4hot-test' AND ts_ms = $1`,
+      [ts]
+    );
+    console.log('[OK] 测试数据已清理');
+  } catch (err) {
+    console.warn('[WARN] 清理失败:', err.message);
+  }
+
+  // 8. 验证配置摘要
+  console.log('\n=== 当前配置 ===');
+  console.log('  legacyHeartbeatEnabled:', config.db.legacyHeartbeatEnabled);
+  console.log('  g4HotHeartbeatEnabled:', config.db.g4HotHeartbeatEnabled);
+  console.log('  roomStatusEnabled:', config.db.roomStatusEnabled);
+  console.log('  legacyTable:', config.db.legacyTable);
+  console.log('  g4HotTable:', config.db.g4HotTable);
+
+  await dm.disconnect();
+  await client.end();
+  console.log('\n=== Smoke Test 完成 ===');
+}
+
+main().catch((err) => {
+  console.error('smoke test failed:', err);
+  process.exit(1);
+});
diff --git a/src/config/config.example.js b/src/config/config.example.js
index 40df9a4..bf4e77a 100644
--- a/src/config/config.example.js
+++ b/src/config/config.example.js
@@ -52,6 +52,12 @@ export default {
     idleTimeoutMillis: Number(env.POSTGRES_IDLE_TIMEOUT_MS ?? 30000),
     retryAttempts: 3, // 重试次数
     retryDelay: 1000, // 重试延迟
+    legacyHeartbeatEnabled: true,     // 旧明细表写入开关
+    g4HotHeartbeatEnabled: false,     // 新明细表(g4_hot)写入开关
+    roomStatusEnabled: true,          // room_status 写入开关
+    legacyTable: 'heartbeat.heartbeat_events',
+    g4HotTable: 'heartbeat.heartbeat_events_g4_hot',
+  },
 
   // 日志配置
   logger: {
diff --git a/src/db/databaseManager.js b/src/db/databaseManager.js
index ab64ba8..d069c14 100644
--- a/src/db/databaseManager.js
+++ b/src/db/databaseManager.js
@@ -1,6 +1,7 @@
 import { Pool } from 'pg';
 import { pipeline } from 'stream/promises';
 import { Readable } from 'stream';
+import { randomUUID } from 'node:crypto';
 import pgCopyStreams from 'pg-copy-streams';
 const { from: copyFrom } = pgCopyStreams;
 
@@ -70,6 +71,13 @@ class DatabaseManager {
     return `"${String(id).replace(/"/g, '""')}"`;
   }
 
+  _normalizeGuid(guid) {
+    if (guid === null || guid === undefined || guid === '') {
+      return randomUUID().replace(/-/g, '').toLowerCase();
+    }
+    return String(guid).replace(/-/g, '').toLowerCase();
+  }
+
   formatShanghaiDate(tsMs) {
     const date = new Date(Number(tsMs));
     const fmt = new Intl.DateTimeFormat('en-CA', {
@@ -90,13 +98,382 @@ class DatabaseManager {
     ]);
   }
 
-  isMissingPartitionError(error) {
+  isMissingPartitionError(error, tableName) {
     const msg = String(error?.message ?? '');
+    if (tableName) return msg.includes('no partition of relation') && msg.includes(tableName);
     return msg.includes('no partition of relation') && msg.includes('heartbeat_events');
   }
 
-  // v2 明细表写入：用于未来对接 Kafka 心跳字段
+  // ---- 共享格式化工具 ----
+
+  _formatPgCol(v) {
+    if (v === null || v === undefined) return '\\N';
+    if (typeof v === 'boolean') return v ? 't' : 'f';
+    if (Array.isArray(v)) {
+      const inner = v.map((item) => {
+        if (item === null || item === undefined) return 'NULL';
+        const s = String(item);
+        return `"${s.replace(/\\/g, '\\\\').replace(/"/g, '\\"')}"`;
+      });
+      const arrStr = `{${inner.join(',')}}`;
+      return arrStr.replace(/\\/g, '\\\\').replace(/\n/g, '\\n').replace(/\r/g, '\\r').replace(/\t/g, '\\t');
+    }
+    const s = typeof v === 'object' ? JSON.stringify(v) : String(v);
+    return s.replace(/\\/g, '\\\\').replace(/\n/g, '\\n').replace(/\r/g, '\\r').replace(/\t/g, '\\t');
+  }
+
+  _isDbConnectionError(error) {
+    if (!error) return false;
+    const connCodes = ['57P03', '08006', '08001', '08003', '08004', '08007'];
+    if (connCodes.includes(error.code)) return true;
+    if (error.message && /ECONNREFUSED|ETIMEDOUT|connection/i.test(error.message)) return true;
+    return false;
+  }
+
+  // ---- 旧表列定义 ----
+
+  _getLegacyColumns() {
+    return [
+      'ts_ms', 'write_ts_ms', 'hotel_id', 'room_id', 'device_id', 'ip',
+      'power_state', 'guest_type', 'cardless_state', 'service_mask',
+      'pms_state', 'carbon_state', 'device_count', 'comm_seq',
+      'insert_card', 'bright_g', 'version',
+      'elec_address', 'air_address', 'voltage', 'ampere', 'power', 'phase',
+      'energy', 'sum_energy', 'state', 'model', 'speed', 'set_temp',
+      'now_temp', 'solenoid_valve', 'extra',
+    ];
+  }
+
+  _legacyToRowValues(e) {
+    return [
+      e.ts_ms,
+      e.write_ts_ms ?? Date.now(),
+      e.hotel_id,
+      e.room_id,
+      e.device_id,
+      e.ip,
+      e.power_state,
+      e.guest_type,
+      e.cardless_state,
+      e.service_mask,
+      e.pms_state,
+      e.carbon_state,
+      e.device_count,
+      e.comm_seq,
+      e.insert_card ?? null,
+      (e.bright_g === -1 || e.bright_g === '-1') ? null : (e.bright_g ?? null),
+      e.version ?? null,
+      Array.isArray(e.elec_address) ? e.elec_address : null,
+      Array.isArray(e.air_address) ? e.air_address : null,
+      Array.isArray(e.voltage) ? e.voltage : null,
+      Array.isArray(e.ampere) ? e.ampere : null,
+      Array.isArray(e.power) ? e.power : null,
+      Array.isArray(e.phase) ? e.phase : null,
+      Array.isArray(e.energy) ? e.energy : null,
+      Array.isArray(e.sum_energy) ? e.sum_energy : null,
+      Array.isArray(e.state) ? e.state : null,
+      Array.isArray(e.model) ? e.model : null,
+      Array.isArray(e.speed) ? e.speed : null,
+      Array.isArray(e.set_temp) ? e.set_temp : null,
+      Array.isArray(e.now_temp) ? e.now_temp : null,
+      Array.isArray(e.solenoid_valve) ? e.solenoid_valve : null,
+      e.extra ?? null,
+    ];
+  }
+
+  // ---- 新表 G4 Hot 列定义 ----
+
+  _getG4HotColumns() {
+    const base = [
+      'ts_ms', 'write_ts_ms', 'hotel_id', 'room_id', 'device_id', 'ip',
+      'power_state', 'guest_type', 'cardless_state', 'service_mask',
+      'pms_state', 'carbon_state', 'device_count', 'comm_seq',
+      'insert_card', 'bright_g', 'version',
+      'elec_address', 'air_address', 'voltage', 'ampere', 'power', 'phase',
+      'energy', 'sum_energy', 'state', 'model', 'speed', 'set_temp',
+      'now_temp', 'solenoid_valve', 'extra',
+    ];
+    const svc = Array.from({ length: 64 }, (_, i) => `svc_${String(i + 1).padStart(2, '0')}`);
+    const airUnpacked = [
+      'air_address_1', 'air_address_2', 'air_address_residual',
+      'state_1', 'state_2', 'state_residual',
+      'model_1', 'model_2', 'model_residual',
+      'speed_1', 'speed_2', 'speed_residual',
+      'set_temp_1', 'set_temp_2', 'set_temp_residual',
+      'now_temp_1', 'now_temp_2', 'now_temp_residual',
+      'solenoid_valve_1', 'solenoid_valve_2', 'solenoid_valve_residual',
+    ];
+    const elecUnpacked = [
+      'elec_address_1', 'elec_address_2', 'elec_address_residual',
+      'voltage_1', 'voltage_2', 'voltage_residual',
+      'ampere_1', 'ampere_2', 'ampere_residual',
+      'power_1', 'power_2', 'power_residual',
+      'phase_1', 'phase_2', 'phase_residual',
+      'energy_1', 'energy_2', 'energy_residual',
+      'sum_energy_1', 'sum_energy_2', 'sum_energy_residual',
+    ];
+    const power = ['power_carbon_on', 'power_carbon_off', 'power_person_exist', 'power_person_left'];
+    const tail = ['guid'];
+    return [...base, ...svc, ...airUnpacked, ...elecUnpacked, ...power, ...tail];
+  }
+
+  _unpackArrElement(arr, idx) {
+    if (!Array.isArray(arr) || idx >= arr.length) return null;
+    return arr[idx] ?? null;
+  }
+
+  _unpackArrResidual(arr) {
+    if (!Array.isArray(arr) || arr.length <= 2) return null;
+    return arr.slice(2);
+  }
+
+  _g4HotToRowValues(e) {
+    const values = [
+      e.ts_ms,
+      e.write_ts_ms ?? Date.now(),
+      e.hotel_id,
+      e.room_id,
+      e.device_id,
+      e.ip,
+      e.power_state,
+      e.guest_type,
+      e.cardless_state,
+      e.service_mask,
+      e.pms_state,
+      e.carbon_state,
+      e.device_count,
+      e.comm_seq,
+      e.insert_card ?? null,
+      (e.bright_g === -1 || e.bright_g === '-1') ? null : (e.bright_g ?? null),
+      e.version ?? null,
+      Array.isArray(e.elec_address) ? e.elec_address : null,
+      Array.isArray(e.air_address) ? e.air_address : null,
+      Array.isArray(e.voltage) ? e.voltage : null,
+      Array.isArray(e.ampere) ? e.ampere : null,
+      Array.isArray(e.power) ? e.power : null,
+      Array.isArray(e.phase) ? e.phase : null,
+      Array.isArray(e.energy) ? e.energy : null,
+      Array.isArray(e.sum_energy) ? e.sum_energy : null,
+      Array.isArray(e.state) ? e.state : null,
+      Array.isArray(e.model) ? e.model : null,
+      Array.isArray(e.speed) ? e.speed : null,
+      Array.isArray(e.set_temp) ? e.set_temp : null,
+      Array.isArray(e.now_temp) ? e.now_temp : null,
+      Array.isArray(e.solenoid_valve) ? e.solenoid_valve : null,
+      e.extra ?? null,
+    ];
+
+    // svc_01 .. svc_64 布尔展开
+    const mask = e.service_mask != null ? BigInt(e.service_mask) : null;
+    for (let i = 0; i < 64; i++) {
+      values.push(mask != null ? Boolean((mask >> BigInt(i)) & 1n) : null);
+    }
+
+    // 空调展开 _1, _2, _residual
+    const airArr = Array.isArray(e.air_address) ? e.air_address : null;
+    const stateArr = Array.isArray(e.state) ? e.state : null;
+    const modelArr = Array.isArray(e.model) ? e.model : null;
+    const speedArr = Array.isArray(e.speed) ? e.speed : null;
+    const setTempArr = Array.isArray(e.set_temp) ? e.set_temp : null;
+    const nowTempArr = Array.isArray(e.now_temp) ? e.now_temp : null;
+    const svArr = Array.isArray(e.solenoid_valve) ? e.solenoid_valve : null;
+
+    for (const arr of [airArr, stateArr, modelArr, speedArr, setTempArr, nowTempArr, svArr]) {
+      values.push(this._unpackArrElement(arr, 0));
+      values.push(this._unpackArrElement(arr, 1));
+      values.push(this._unpackArrResidual(arr));
+    }
+
+    // 电力展开 _1, _2, _residual
+    const elecAddr = Array.isArray(e.elec_address) ? e.elec_address : null;
+    const voltArr = Array.isArray(e.voltage) ? e.voltage : null;
+    const ampArr = Array.isArray(e.ampere) ? e.ampere : null;
+    const powArr = Array.isArray(e.power) ? e.power : null;
+    const phaseArr = Array.isArray(e.phase) ? e.phase : null;
+    const energyArr = Array.isArray(e.energy) ? e.energy : null;
+    const sumEnergyArr = Array.isArray(e.sum_energy) ? e.sum_energy : null;
+
+    for (const arr of [elecAddr, voltArr, ampArr, powArr, phaseArr, energyArr, sumEnergyArr]) {
+      values.push(this._unpackArrElement(arr, 0));
+      values.push(this._unpackArrElement(arr, 1));
+      values.push(this._unpackArrResidual(arr));
+    }
+
+    // power 辅助字段：当前计算逻辑尚未接入，临时统一写 null
+    values.push(null);
+    values.push(null);
+    values.push(null);
+    values.push(null);
+
+    values.push(this._normalizeGuid(e.guid));
+
+    return values;
+  }
+
+  // ---- 通用 COPY + fallback INSERT 写入内核 ----
+  // target: { tableName, columns, toRowValues, ensurePartitions, logPrefix, missingPartitionTable }
+  // 返回: { success, insertedCount, failedRecords, error, isConnectionError, batchError }
+  async _insertEventsToTarget(events, target) {
+    const { tableName, columns, toRowValues, ensurePartitions, logPrefix, missingPartitionTable } = target;
+
+    const tsValues = events.map((e) => Number(e.ts_ms)).filter((n) => Number.isFinite(n));
+    const tsMin = tsValues.length > 0 ? Math.min(...tsValues) : null;
+    const tsMax = tsValues.length > 0 ? Math.max(...tsValues) : null;
+
+    const self = this;
+    const runInsertOnce = async () => {
+      if (ensurePartitions && tsMin !== null) {
+        await self.ensurePartitionsForTsRange(tsMin, tsMax);
+      }
+      const client = await self.pool.connect();
+      try {
+        const copySql = `COPY ${tableName} (${columns.join(', ')}) FROM STDIN WITH (FORMAT text, DELIMITER E'\\t', NULL '\\N')`;
+        const stream = client.query(copyFrom(copySql));
+        async function* generateRows() {
+          for (const e of events) {
+            const line = toRowValues(e).map((v) => self._formatPgCol(v)).join('\t') + '\n';
+            yield line;
+          }
+        }
+        await pipeline(Readable.from(generateRows()), stream);
+        return { insertedCount: events.length };
+      } finally {
+        client.release();
+      }
+    };
+
+    const retryAttempts = Number(this.config?.retryAttempts ?? 0);
+    const retryDelay = Math.max(250, Number(this.config?.retryDelay ?? 1000));
+    const maxAttempts = retryAttempts > 0 ? retryAttempts : 1;
+
+    let lastError = null;
+    for (let attempt = 1; attempt <= maxAttempts; attempt += 1) {
+      try {
+        const r = await runInsertOnce();
+        return { success: true, insertedCount: r.insertedCount, failedRecords: [], error: null, isConnectionError: false, batchError: null };
+      } catch (error) {
+        lastError = error;
+        if (ensurePartitions && missingPartitionTable && this.isMissingPartitionError(error, missingPartitionTable)) {
+          console.warn(`${logPrefix} 检测到缺分区写入失败，执行兜底预创建并重试一次`);
+          if (tsMin !== null) {
+            await this.ensurePartitionsForTsRange(tsMin, tsMax);
+          }
+        }
+        if (attempt < maxAttempts) {
+          await new Promise((r) => setTimeout(r, retryDelay));
+          continue;
+        }
+      }
+    }
+
+    // COPY 全失败，降级逐条 INSERT
+    const failedRecords = [];
+    let insertedCount = 0;
+    console.error(`${logPrefix} 批量写入失败，已切换为逐条写入:`, lastError);
+
+    const singleSql = `INSERT INTO ${tableName} (${columns.join(', ')}) VALUES (${columns.map((_, i) => `$${i + 1}`).join(', ')})`;
+
+    for (const event of events) {
+      try {
+        await this.pool.query(singleSql, toRowValues(event));
+        insertedCount += 1;
+      } catch (error) {
+        if (this._isDbConnectionError(error)) {
+          return { success: false, insertedCount, failedRecords, error, isConnectionError: true, batchError: error };
+        }
+        failedRecords.push({ error, record: event });
+      }
+    }
+
+    if (insertedCount === 0 && failedRecords.length === events.length && this._isDbConnectionError(lastError)) {
+      return { success: false, insertedCount: 0, failedRecords, error: lastError, isConnectionError: true, batchError: lastError };
+    }
+
+    return {
+      success: insertedCount > 0 || failedRecords.length === 0,
+      insertedCount,
+      failedRecords,
+      error: lastError,
+      isConnectionError: false,
+      batchError: (insertedCount === 0 && failedRecords.length === events.length) ? lastError : null,
+    };
+  }
+
+  // ---- 旧/新双写编排 ----
+  async insertHeartbeatEventsDual(events) {
+    if (!Array.isArray(events)) events = [events];
+    if (events.length === 0) {
+      const empty = { enabled: false, success: true, insertedCount: 0, failedRecords: [], error: null, isConnectionError: false, batchError: null };
+      return { legacy: { ...empty }, g4Hot: { ...empty } };
+    }
+
+    const legacyEnabled = this.config.legacyHeartbeatEnabled;
+    const g4HotEnabled = this.config.g4HotHeartbeatEnabled;
+    const empty = { enabled: false, success: true, insertedCount: 0, failedRecords: [], error: null, isConnectionError: false, batchError: null };
+
+    const promises = [];
+    let legacyIdx = -1;
+    let g4HotIdx = -1;
+
+    if (legacyEnabled) {
+      legacyIdx = promises.length;
+      promises.push(this._insertEventsToTarget(events, {
+        tableName: this.config.legacyTable ?? 'heartbeat.heartbeat_events',
+        columns: this._getLegacyColumns(),
+        toRowValues: (e) => this._legacyToRowValues(e),
+        ensurePartitions: true,
+        logPrefix: '[legacy]',
+        missingPartitionTable: 'heartbeat_events',
+      }));
+    }
+
+    if (g4HotEnabled) {
+      g4HotIdx = promises.length;
+      promises.push(this._insertEventsToTarget(events, {
+        tableName: this.config.g4HotTable ?? 'heartbeat.heartbeat_events_g4_hot',
+        columns: this._getG4HotColumns(),
+        toRowValues: (e) => this._g4HotToRowValues(e),
+        ensurePartitions: false,
+        logPrefix: '[g4hot]',
+        missingPartitionTable: null,
+      }));
+    }
+
+    if (promises.length === 0) {
+      return { legacy: { ...empty }, g4Hot: { ...empty } };
+    }
+
+    const settled = await Promise.allSettled(promises);
+    const wrap = (s) => {
+      if (!s) return { ...empty };
+      if (s.status === 'fulfilled') return { ...s.value, enabled: true };
+      return { enabled: true, success: false, insertedCount: 0, failedRecords: [], error: s.reason, isConnectionError: this._isDbConnectionError(s.reason), batchError: s.reason };
+    };
+
+    return {
+      legacy: legacyIdx >= 0 ? wrap(settled[legacyIdx]) : { ...empty },
+      g4Hot: g4HotIdx >= 0 ? wrap(settled[g4HotIdx]) : { ...empty },
+    };
+  }
+
+  // v2 明细表写入（向后兼容封装，仅旧表，抛出连接错误）
   async insertHeartbeatEvents(events) {
+    if (!Array.isArray(events)) events = [events];
+    if (events.length === 0) return;
+    const result = await this._insertEventsToTarget(events, {
+      tableName: this.config.legacyTable ?? 'heartbeat.heartbeat_events',
+      columns: this._getLegacyColumns(),
+      toRowValues: (e) => this._legacyToRowValues(e),
+      ensurePartitions: true,
+      logPrefix: '[legacy]',
+      missingPartitionTable: 'heartbeat_events',
+    });
+    if (result.isConnectionError && result.error) throw result.error;
+    return { insertedCount: result.insertedCount, failedRecords: result.failedRecords, batchError: result.batchError };
+  }
+
+  // [DEPRECATED] 旧版直写实现，已由 _insertEventsToTarget 替代，后续可移除
+  async _insertHeartbeatEventsLegacyDirect(events) {
     if (!Array.isArray(events)) {
       events = [events];
     }
diff --git a/src/index.js b/src/index.js
index 223bbff..36034bc 100644
--- a/src/index.js
+++ b/src/index.js
@@ -33,6 +33,16 @@ class WebBLSHeartbeatServer {
       console.log('数据库连接成功');
       await this.redis?.info('数据库连接成功', { module: 'db' });
 
+      // 打印双写配置摘要
+      const dbCfg = this.config.db;
+      const dualWriteSummary = {
+        legacyHeartbeat: dbCfg.legacyHeartbeatEnabled ? `ON → ${dbCfg.legacyTable}` : 'OFF',
+        g4HotHeartbeat: dbCfg.g4HotHeartbeatEnabled ? `ON → ${dbCfg.g4HotTable}` : 'OFF',
+        roomStatus: dbCfg.roomStatusEnabled !== false ? 'ON' : 'OFF',
+      };
+      console.log('双写配置摘要:', dualWriteSummary);
+      await this.redis?.info('双写配置摘要', { module: 'db', ...dualWriteSummary });
+
       // 打印 Kafka 配置摘要，便于排查连接问题
       console.log('正在初始化 Kafka 消费者...');
       console.log('Kafka 配置:', {
diff --git a/src/processor/heartbeatProcessor.js b/src/processor/heartbeatProcessor.js
index 4ea12fa..b33a63b 100644
--- a/src/processor/heartbeatProcessor.js
+++ b/src/processor/heartbeatProcessor.js
@@ -213,51 +213,76 @@ class HeartbeatProcessor {
       batchData = this.batchQueue.slice(0, batchEventCount);
       batchMessages = this.batchMessageQueue.slice(0, batchMessageCount);
 
-      let insertedCount = 0;
-      let failedRecords = [];
-      if (typeof this.databaseManager.insertHeartbeatEvents === 'function') {
-        const result = await this.databaseManager.insertHeartbeatEvents(batchData);
-        insertedCount = Number(result?.insertedCount ?? result ?? 0);
-        failedRecords = Array.isArray(result?.failedRecords) ? result.failedRecords : [];
-
-        // 同步到 room_status 表 (Best Effort)
-        // 只有当历史表写入成功（insertedCount > 0）才尝试同步
-        // 过滤掉写入失败的记录（如果有）
-        if (insertedCount > 0) {
-          const successData = failedRecords.length > 0
-            ? batchData.filter(d => !failedRecords.some(f => f.record === d))
-            : batchData;
-
-          if (successData.length > 0) {
-            this.databaseManager.upsertRoomStatus(successData).catch(err => {
-              console.warn('异步同步 room_status 失败 (忽略):', err);
-            });
-          }
-        }
+      // A. 双明细写入（旧/新独立执行）
+      const dualResult = await this.databaseManager.insertHeartbeatEventsDual(batchData);
+      const { legacy: legacyResult, g4Hot: g4HotResult } = dualResult;
 
+      // B. room_status 始终独立执行（不依赖明细写入结果）
+      const roomStatusEnabled = this.databaseManager.config?.roomStatusEnabled !== false;
+      if (roomStatusEnabled && batchData.length > 0) {
+        this.databaseManager.upsertRoomStatus(batchData).catch(err => {
+          console.warn('异步同步 room_status 失败 (忽略):', err);
+          this.stats?.incRoomStatusFailed?.(batchData.length);
+        });
+        this.stats?.incRoomStatusWritten?.(batchData.length);
       }
 
+      // C. 暂停消费判定（基于当前启用的关键 sink）
+      const shouldPause = this._shouldPauseConsumption(legacyResult, g4HotResult);
+      if (shouldPause) {
+        if (!this._dbOffline) {
+          this._dbOffline = true;
+          console.error('关键数据库 sink 连接断开，暂停拉取并开始检查');
+          this.onDbOffline?.();
+        }
+        this._emitDbWriteError(legacyResult.error || g4HotResult.error, batchData);
+        this._scheduleDbCheck();
+        return;
+      }
+
+      // D. 清理队列、resolve deferreds
       this.batchQueue.splice(0, batchEventCount);
       this.batchMessageQueue.splice(0, batchMessageCount);
-
       for (const entry of batchMessages) {
         entry.deferred.resolve({ insertedCount: entry.eventCount });
       }
 
-      if (failedRecords.length > 0) {
-        const rejects = failedRecords.map(item => ({
-          errorId: 'db_write_failed',
-          error: item?.error,
-          rawData: item?.record,
+      // E. 统计 & 日志
+      if (legacyResult.enabled) {
+        this.stats?.incDbWritten?.(legacyResult.insertedCount);
+        if (legacyResult.failedRecords.length > 0) {
+          this.stats?.incDbWriteFailed?.(legacyResult.failedRecords.length);
+          console.warn(`[legacy] 批次部分失败：成功 ${legacyResult.insertedCount}，失败 ${legacyResult.failedRecords.length}`);
+        }
+      }
+      if (g4HotResult.enabled) {
+        this.stats?.incG4HotWritten?.(g4HotResult.insertedCount);
+        if (g4HotResult.failedRecords.length > 0) {
+          this.stats?.incG4HotWriteFailed?.(g4HotResult.failedRecords.length);
+          console.warn(`[g4hot] 批次部分失败：成功 ${g4HotResult.insertedCount}，失败 ${g4HotResult.failedRecords.length}`);
+        }
+      }
+
+      // F. 错误表：仅 g4Hot 失败记录（旧表失败不写错误表）
+      if (g4HotResult.enabled && g4HotResult.failedRecords.length > 0) {
+        const dbPayload = g4HotResult.failedRecords.map(item => ({
+          hotel_id: item.record?.hotel_id ?? null,
+          room_id: item.record?.room_id ?? null,
+          original_data: item.record,
+          error_code: 'g4hot_write_failed',
+          error_message: item.error ? String(item.error?.message ?? item.error) : 'g4hot write failed',
         }));
-        this._emitRejectedRecords(rejects);
-        this.stats?.incDbWriteFailed?.(failedRecords.length);
+        this.databaseManager.insertHeartbeatEventsErrors(dbPayload).catch(() => {});
+        this.stats?.incG4HotErrorTableInserted?.(dbPayload.length);
       }
-      this.stats?.incDbWritten?.(insertedCount);
-      const failedCount = failedRecords.length;
-      if (failedCount > 0) {
-        console.warn(`批次处理部分失败：成功 ${insertedCount} 条，失败 ${failedCount} 条`);
+
+      // G. Legacy 失败仅日志（不写错误表）
+      if (legacyResult.enabled && legacyResult.failedRecords.length > 0) {
+        for (const item of legacyResult.failedRecords.slice(0, 10)) {
+          console.warn('[legacy] 单条写入失败:', item.error?.message);
+        }
       }
+
       hasMore = this.batchQueue.length > 0;
     } catch (error) {
       console.error('批量处理失败:', error);
@@ -316,6 +341,22 @@ class HeartbeatProcessor {
     return false;
   }
 
+  // 基于当前启用的关键 sink 判断是否暂停消费
+  _shouldPauseConsumption(legacyResult, g4HotResult) {
+    const legacyEnabled = legacyResult?.enabled;
+    const g4HotEnabled = g4HotResult?.enabled;
+    const legacyConnErr = legacyResult?.isConnectionError;
+    const g4HotConnErr = g4HotResult?.isConnectionError;
+    // 双关: 不因明细关闭而暂停（room_status 可能仍在写）
+    if (!legacyEnabled && !g4HotEnabled) return false;
+    // 仅旧表开启: 旧表连接故障 → 暂停
+    if (legacyEnabled && !g4HotEnabled) return !!legacyConnErr;
+    // 仅新表开启: 新表连接故障 → 暂停
+    if (!legacyEnabled && g4HotEnabled) return !!g4HotConnErr;
+    // 双开: 两路都连接失败 → 暂停
+    return !!legacyConnErr && !!g4HotConnErr;
+  }
+
   _scheduleDbCheck() {
     if (this.batchTimer) clearTimeout(this.batchTimer);
     this.batchTimer = setTimeout(async () => {
diff --git a/src/stats/statsManager.js b/src/stats/statsManager.js
index 075d06e..b3a3de3 100644
--- a/src/stats/statsManager.js
+++ b/src/stats/statsManager.js
@@ -1,39 +1,40 @@
 class StatsCounters {
   constructor() {
-    this._minuteBuf = new SharedArrayBuffer(BigInt64Array.BYTES_PER_ELEMENT * 4);
+    // 原有 4 槽 + 新增 7 槽 = 11 槽
+    // [0] dbWritten, [1] filtered, [2] kafkaPulled, [3] dbWriteFailed,
+    // [4] g4HotWritten, [5] g4HotWriteFailed, [6] roomStatusWritten,
+    // [7] roomStatusFailed, [8] g4HotErrorTableInserted
+    this._minuteBuf = new SharedArrayBuffer(BigInt64Array.BYTES_PER_ELEMENT * 9);
     this._minute = new BigInt64Array(this._minuteBuf);
   }
 
-  incDbWritten(n = 1) {
+  _inc(slot, n = 1) {
     const v = BigInt(Math.max(0, Number(n) || 0));
     if (v === 0n) return;
-    Atomics.add(this._minute, 0, v);
+    Atomics.add(this._minute, slot, v);
   }
 
-  incFiltered(n = 1) {
-    const v = BigInt(Math.max(0, Number(n) || 0));
-    if (v === 0n) return;
-    Atomics.add(this._minute, 1, v);
-  }
-
-  incKafkaPulled(n = 1) {
-    const v = BigInt(Math.max(0, Number(n) || 0));
-    if (v === 0n) return;
-    Atomics.add(this._minute, 2, v);
-  }
-
-  incDbWriteFailed(n = 1) {
-    const v = BigInt(Math.max(0, Number(n) || 0));
-    if (v === 0n) return;
-    Atomics.add(this._minute, 3, v);
-  }
+  incDbWritten(n = 1) { this._inc(0, n); }
+  incFiltered(n = 1) { this._inc(1, n); }
+  incKafkaPulled(n = 1) { this._inc(2, n); }
+  incDbWriteFailed(n = 1) { this._inc(3, n); }
+  incG4HotWritten(n = 1) { this._inc(4, n); }
+  incG4HotWriteFailed(n = 1) { this._inc(5, n); }
+  incRoomStatusWritten(n = 1) { this._inc(6, n); }
+  incRoomStatusFailed(n = 1) { this._inc(7, n); }
+  incG4HotErrorTableInserted(n = 1) { this._inc(8, n); }
 
   snapshotAndResetMinute() {
     const dbWritten = Atomics.exchange(this._minute, 0, 0n);
     const filtered = Atomics.exchange(this._minute, 1, 0n);
     const kafkaPulled = Atomics.exchange(this._minute, 2, 0n);
     const dbWriteFailed = Atomics.exchange(this._minute, 3, 0n);
-    return { dbWritten, filtered, kafkaPulled, dbWriteFailed };
+    const g4HotWritten = Atomics.exchange(this._minute, 4, 0n);
+    const g4HotWriteFailed = Atomics.exchange(this._minute, 5, 0n);
+    const roomStatusWritten = Atomics.exchange(this._minute, 6, 0n);
+    const roomStatusFailed = Atomics.exchange(this._minute, 7, 0n);
+    const g4HotErrorTableInserted = Atomics.exchange(this._minute, 8, 0n);
+    return { dbWritten, filtered, kafkaPulled, dbWriteFailed, g4HotWritten, g4HotWriteFailed, roomStatusWritten, roomStatusFailed, g4HotErrorTableInserted };
   }
 }
 
@@ -81,11 +82,16 @@ class StatsReporter {
     if (this._lastFlushMinute === minuteKey) {
       return;
     }
-    const { dbWritten, filtered, kafkaPulled, dbWriteFailed } = this.stats.snapshotAndResetMinute();
+    const { dbWritten, filtered, kafkaPulled, dbWriteFailed, g4HotWritten, g4HotWriteFailed, roomStatusWritten, roomStatusFailed, g4HotErrorTableInserted } = this.stats.snapshotAndResetMinute();
     this._lastFlushMinute = minuteKey;
     const ts = formatTimestamp(new Date());
-    this.redis.pushConsoleLog?.({ level: 'info', message: `[STATS] ${ts} 数据库写入量: ${dbWritten}条`, metadata: { module: 'stats' } });
-    this.redis.pushConsoleLog?.({ level: 'info', message: `[STATS] ${ts} 数据库写入失败量: ${dbWriteFailed}条`, metadata: { module: 'stats' } });
+    this.redis.pushConsoleLog?.({ level: 'info', message: `[STATS] ${ts} Legacy写入量: ${dbWritten}条`, metadata: { module: 'stats' } });
+    this.redis.pushConsoleLog?.({ level: 'info', message: `[STATS] ${ts} Legacy写入失败量: ${dbWriteFailed}条`, metadata: { module: 'stats' } });
+    this.redis.pushConsoleLog?.({ level: 'info', message: `[STATS] ${ts} G4Hot写入量: ${g4HotWritten}条`, metadata: { module: 'stats' } });
+    this.redis.pushConsoleLog?.({ level: 'info', message: `[STATS] ${ts} G4Hot写入失败量: ${g4HotWriteFailed}条`, metadata: { module: 'stats' } });
+    this.redis.pushConsoleLog?.({ level: 'info', message: `[STATS] ${ts} RoomStatus写入量: ${roomStatusWritten}条`, metadata: { module: 'stats' } });
+    this.redis.pushConsoleLog?.({ level: 'info', message: `[STATS] ${ts} RoomStatus失败量: ${roomStatusFailed}条`, metadata: { module: 'stats' } });
+    this.redis.pushConsoleLog?.({ level: 'info', message: `[STATS] ${ts} G4Hot错误表插入量: ${g4HotErrorTableInserted}条`, metadata: { module: 'stats' } });
     this.redis.pushConsoleLog?.({ level: 'info', message: `[STATS] ${ts} 数据过滤量: ${filtered}条`, metadata: { module: 'stats' } });
     this.redis.pushConsoleLog?.({ level: 'info', message: `[STATS] ${ts} Kafka拉取量: ${kafkaPulled}条`, metadata: { module: 'stats' } });
   }
diff --git a/test/arrays.test.js b/test/arrays.test.js
index b4d062c..368989c 100644
--- a/test/arrays.test.js
+++ b/test/arrays.test.js
@@ -90,10 +90,15 @@ describe('HeartbeatProcessor arrays', () => {
   it('end-to-end: message buffer -> processMessage -> insertHeartbeatEvents payload includes arrays', async () => {
     let captured = null;
     const db = {
-      insertHeartbeatEvents: async (events) => {
+      config: { legacyHeartbeatEnabled: true, g4HotHeartbeatEnabled: false, roomStatusEnabled: false, legacyTable: 'heartbeat.heartbeat_events' },
+      insertHeartbeatEventsDual: async (events) => {
         captured = events;
-        return { insertedCount: events.length };
+        return {
+          legacy: { enabled: true, success: true, insertedCount: events.length, failedRecords: [], error: null, isConnectionError: false, batchError: null },
+          g4Hot: { enabled: false, success: true, insertedCount: 0, failedRecords: [], error: null, isConnectionError: false, batchError: null },
+        };
       },
+      insertHeartbeatEvents: async (events) => ({ insertedCount: events.length }),
     };
 
     const processor = new HeartbeatProcessor({ batchSize: 1, batchTimeout: 1000 }, db);
diff --git a/test/dualWrite.test.js b/test/dualWrite.test.js
new file mode 100644
index 0000000..cbdd448
--- /dev/null
+++ b/test/dualWrite.test.js
@@ -0,0 +1,397 @@
+import assert from 'node:assert/strict';
+import { HeartbeatProcessor } from '../src/processor/heartbeatProcessor.js';
+import { DatabaseManager } from '../src/db/databaseManager.js';
+
+// ---- 辅助 ----
+
+const buildBasePayload = () => ({
+  ts_ms: 1700000000123,
+  hotel_id: 1,
+  room_id: '101',
+  device_id: 'dev1',
+  ip: '10.0.0.1',
+  power_state: 1,
+  guest_type: 0,
+  cardless_state: 0,
+  service_mask: 7,
+  pms_state: 1,
+  carbon_state: 0,
+  device_count: 1,
+  comm_seq: 1,
+});
+
+function makeDualResult({ legacyEnabled = true, legacySuccess = true, legacyConn = false,
+  g4HotEnabled = false, g4HotSuccess = true, g4HotConn = false,
+  insertedCount = 1, failedRecords = [] } = {}) {
+  return {
+    legacy: {
+      enabled: legacyEnabled, success: legacySuccess, insertedCount: legacySuccess ? insertedCount : 0,
+      failedRecords: legacySuccess ? [] : failedRecords, error: legacySuccess ? null : new Error('legacy fail'),
+      isConnectionError: legacyConn, batchError: legacySuccess ? null : new Error('legacy fail'),
+    },
+    g4Hot: {
+      enabled: g4HotEnabled, success: g4HotSuccess, insertedCount: g4HotSuccess ? insertedCount : 0,
+      failedRecords: g4HotSuccess ? [] : failedRecords, error: g4HotSuccess ? null : new Error('g4hot fail'),
+      isConnectionError: g4HotConn, batchError: g4HotSuccess ? null : new Error('g4hot fail'),
+    },
+  };
+}
+
+function buildMockDb(overrides = {}) {
+  return {
+    config: {
+      legacyHeartbeatEnabled: true,
+      g4HotHeartbeatEnabled: false,
+      roomStatusEnabled: true,
+      legacyTable: 'heartbeat.heartbeat_events',
+      g4HotTable: 'heartbeat.heartbeat_events_g4_hot',
+      ...overrides.config,
+    },
+    insertHeartbeatEventsDual: overrides.insertHeartbeatEventsDual ?? (async () => makeDualResult()),
+    insertHeartbeatEventsErrors: overrides.insertHeartbeatEventsErrors ?? (async () => {}),
+    upsertRoomStatus: overrides.upsertRoomStatus ?? (async () => ({ rowCount: 1 })),
+    insertHeartbeatEvents: overrides.insertHeartbeatEvents ?? (async () => ({ insertedCount: 1 })),
+    checkConnection: overrides.checkConnection ?? (async () => true),
+  };
+}
+
+function buildProcessor(dbOverrides = {}, processorConfig = {}) {
+  const db = buildMockDb(dbOverrides);
+  return new HeartbeatProcessor(
+    { batchSize: 1, batchTimeout: 1000, ...processorConfig },
+    db
+  );
+}
+
+// ---- 测试 ----
+
+describe('Dual-write: 仅旧表开启', () => {
+  it('should call insertHeartbeatEventsDual and succeed', async () => {
+    let captured = null;
+    const processor = buildProcessor({
+      config: { legacyHeartbeatEnabled: true, g4HotHeartbeatEnabled: false },
+      insertHeartbeatEventsDual: async (events) => {
+        captured = events;
+        return makeDualResult({ legacyEnabled: true, g4HotEnabled: false });
+      },
+    });
+
+    const msg = { value: Buffer.from(JSON.stringify(buildBasePayload()), 'utf8') };
+    const res = await processor.processMessage(msg);
+    assert.deepEqual(res, { insertedCount: 1 });
+    assert.ok(Array.isArray(captured));
+    assert.equal(captured.length, 1);
+  });
+});
+
+describe('Dual-write: 仅新表开启', () => {
+  it('should call insertHeartbeatEventsDual with g4hot enabled', async () => {
+    let dualCalled = false;
+    const processor = buildProcessor({
+      config: { legacyHeartbeatEnabled: false, g4HotHeartbeatEnabled: true },
+      insertHeartbeatEventsDual: async (events) => {
+        dualCalled = true;
+        return makeDualResult({ legacyEnabled: false, g4HotEnabled: true });
+      },
+    });
+
+    const msg = { value: Buffer.from(JSON.stringify(buildBasePayload()), 'utf8') };
+    await processor.processMessage(msg);
+    assert.ok(dualCalled);
+  });
+});
+
+describe('Dual-write: 旧新双开', () => {
+  it('should call insertHeartbeatEventsDual with both enabled', async () => {
+    let dualCalled = false;
+    const processor = buildProcessor({
+      config: { legacyHeartbeatEnabled: true, g4HotHeartbeatEnabled: true },
+      insertHeartbeatEventsDual: async () => {
+        dualCalled = true;
+        return makeDualResult({ legacyEnabled: true, g4HotEnabled: true });
+      },
+    });
+
+    const msg = { value: Buffer.from(JSON.stringify(buildBasePayload()), 'utf8') };
+    await processor.processMessage(msg);
+    assert.ok(dualCalled);
+  });
+});
+
+describe('Dual-write: 旧新双关，room_status 仍执行', () => {
+  it('should still call upsertRoomStatus when both detail writes are off', async () => {
+    let roomStatusCalled = false;
+    const processor = buildProcessor({
+      config: { legacyHeartbeatEnabled: false, g4HotHeartbeatEnabled: false, roomStatusEnabled: true },
+      insertHeartbeatEventsDual: async () => makeDualResult({ legacyEnabled: false, g4HotEnabled: false }),
+      upsertRoomStatus: async () => { roomStatusCalled = true; return { rowCount: 1 }; },
+    });
+
+    const msg = { value: Buffer.from(JSON.stringify(buildBasePayload()), 'utf8') };
+    await processor.processMessage(msg);
+    // 等待异步 room_status 调用完成
+    await new Promise(r => setTimeout(r, 50));
+    assert.ok(roomStatusCalled);
+  });
+});
+
+describe('Dual-write: 旧成功新失败', () => {
+  it('should continue and only write g4hot failures to error table', async () => {
+    let errorTablePayload = null;
+    const failedRecord = { error: new Error('g4hot column mismatch'), record: buildBasePayload() };
+    const processor = buildProcessor({
+      config: { legacyHeartbeatEnabled: true, g4HotHeartbeatEnabled: true },
+      insertHeartbeatEventsDual: async () => makeDualResult({
+        legacyEnabled: true, legacySuccess: true,
+        g4HotEnabled: true, g4HotSuccess: false, failedRecords: [failedRecord],
+      }),
+      insertHeartbeatEventsErrors: async (payload) => { errorTablePayload = payload; },
+    });
+
+    const msg = { value: Buffer.from(JSON.stringify(buildBasePayload()), 'utf8') };
+    await processor.processMessage(msg);
+    await new Promise(r => setTimeout(r, 50));
+    assert.ok(errorTablePayload);
+    assert.equal(errorTablePayload.length, 1);
+    assert.equal(errorTablePayload[0].error_code, 'g4hot_write_failed');
+  });
+});
+
+describe('Dual-write: 旧失败新成功', () => {
+  it('should NOT write legacy failures to error table', async () => {
+    let errorTableCalled = false;
+    const failedRecord = { error: new Error('legacy column mismatch'), record: buildBasePayload() };
+    const processor = buildProcessor({
+      config: { legacyHeartbeatEnabled: true, g4HotHeartbeatEnabled: true },
+      insertHeartbeatEventsDual: async () => makeDualResult({
+        legacyEnabled: true, legacySuccess: false, failedRecords: [failedRecord],
+        g4HotEnabled: true, g4HotSuccess: true,
+      }),
+      insertHeartbeatEventsErrors: async () => { errorTableCalled = true; },
+    });
+
+    const msg = { value: Buffer.from(JSON.stringify(buildBasePayload()), 'utf8') };
+    await processor.processMessage(msg);
+    await new Promise(r => setTimeout(r, 50));
+    assert.equal(errorTableCalled, false);
+  });
+});
+
+describe('Dual-write: 双失败', () => {
+  it('should only write g4hot failures to error table, not legacy failures', async () => {
+    let errorTablePayload = null;
+    const failedRecord = { error: new Error('fail'), record: buildBasePayload() };
+    const processor = buildProcessor({
+      config: { legacyHeartbeatEnabled: true, g4HotHeartbeatEnabled: true },
+      insertHeartbeatEventsDual: async () => makeDualResult({
+        legacyEnabled: true, legacySuccess: false, failedRecords: [failedRecord],
+        g4HotEnabled: true, g4HotSuccess: false, failedRecords: [failedRecord],
+      }),
+      insertHeartbeatEventsErrors: async (payload) => { errorTablePayload = payload; },
+    });
+
+    const msg = { value: Buffer.from(JSON.stringify(buildBasePayload()), 'utf8') };
+    await processor.processMessage(msg);
+    await new Promise(r => setTimeout(r, 50));
+    // 错误表只包含 g4hot 失败
+    assert.ok(errorTablePayload);
+    assert.equal(errorTablePayload[0].error_code, 'g4hot_write_failed');
+  });
+});
+
+describe('Dual-write: room_status 始终执行', () => {
+  it('should call upsertRoomStatus regardless of detail write success/failure', async () => {
+    let roomStatusCalled = false;
+    const processor = buildProcessor({
+      config: { legacyHeartbeatEnabled: true, g4HotHeartbeatEnabled: false, roomStatusEnabled: true },
+      insertHeartbeatEventsDual: async () => makeDualResult({
+        legacyEnabled: true, legacySuccess: false,
+        failedRecords: [{ error: new Error('fail'), record: buildBasePayload() }],
+      }),
+      upsertRoomStatus: async () => { roomStatusCalled = true; return { rowCount: 1 }; },
+    });
+
+    const msg = { value: Buffer.from(JSON.stringify(buildBasePayload()), 'utf8') };
+    await processor.processMessage(msg);
+    await new Promise(r => setTimeout(r, 50));
+    assert.ok(roomStatusCalled);
+  });
+});
+
+describe('Dual-write: 暂停消费策略', () => {
+  it('should NOT pause when both detail writes disabled but room_status enabled', async () => {
+    let paused = false;
+    const processor = buildProcessor({
+      config: { legacyHeartbeatEnabled: false, g4HotHeartbeatEnabled: false, roomStatusEnabled: true },
+      insertHeartbeatEventsDual: async () => makeDualResult({ legacyEnabled: false, g4HotEnabled: false }),
+    });
+    processor.onDbOffline = () => { paused = true; };
+
+    const msg = { value: Buffer.from(JSON.stringify(buildBasePayload()), 'utf8') };
+    await processor.processMessage(msg);
+    assert.equal(paused, false);
+  });
+
+  it('should pause when only legacy enabled and legacy has connection error', () => {
+    const processor = buildProcessor({});
+    const result = processor._shouldPauseConsumption(
+      { enabled: true, isConnectionError: true },
+      { enabled: false, isConnectionError: false }
+    );
+    assert.ok(result);
+  });
+
+  it('should NOT pause in dual-write when only g4hot has connection error', async () => {
+    let paused = false;
+    const processor = buildProcessor({
+      config: { legacyHeartbeatEnabled: true, g4HotHeartbeatEnabled: true },
+      insertHeartbeatEventsDual: async () => makeDualResult({
+        legacyEnabled: true, legacySuccess: true,
+        g4HotEnabled: true, g4HotSuccess: false, g4HotConn: true,
+      }),
+    });
+    processor.onDbOffline = () => { paused = true; };
+
+    const msg = { value: Buffer.from(JSON.stringify(buildBasePayload()), 'utf8') };
+    await processor.processMessage(msg);
+    assert.equal(paused, false);
+  });
+
+  it('should pause in dual-write when both have connection errors', () => {
+    const processor = buildProcessor({});
+    const result = processor._shouldPauseConsumption(
+      { enabled: true, isConnectionError: true },
+      { enabled: true, isConnectionError: true }
+    );
+    assert.ok(result);
+  });
+
+  it('should NOT pause when only g4hot has connection error in dual mode', () => {
+    const processor = buildProcessor({});
+    const result = processor._shouldPauseConsumption(
+      { enabled: true, isConnectionError: false },
+      { enabled: true, isConnectionError: true }
+    );
+    assert.equal(result, false);
+  });
+
+  it('should pause when only g4hot enabled and g4hot has connection error', () => {
+    const processor = buildProcessor({});
+    const result = processor._shouldPauseConsumption(
+      { enabled: false, isConnectionError: false },
+      { enabled: true, isConnectionError: true }
+    );
+    assert.ok(result);
+  });
+});
+
+describe('DatabaseManager: _g4HotToRowValues', () => {
+  it('unpacks svc booleans from service_mask', () => {
+    const dm = new DatabaseManager({ host: 'x', port: 5432, user: 'x', password: 'x', database: 'x' });
+    const e = { ...buildBasePayload(), service_mask: 7 }; // bits 0,1,2 set
+    const values = dm._g4HotToRowValues(e);
+    const cols = dm._getG4HotColumns();
+    const svc01Idx = cols.indexOf('svc_01');
+    assert.equal(values[svc01Idx], true);   // bit 0
+    assert.equal(values[svc01Idx + 1], true);  // bit 1 (svc_02)
+    assert.equal(values[svc01Idx + 2], true);  // bit 2 (svc_03)
+    assert.equal(values[svc01Idx + 3], false); // bit 3 (svc_04)
+    assert.equal(values[svc01Idx + 63], false); // svc_64
+  });
+
+  it('unpacks array fields into _1, _2, _residual', () => {
+    const dm = new DatabaseManager({ host: 'x', port: 5432, user: 'x', password: 'x', database: 'x' });
+    const e = {
+      ...buildBasePayload(),
+      air_address: ['ac1', 'ac2', 'ac3'],
+      state: [1, 2, 3],
+      elec_address: ['e1'],
+      voltage: [220.5],
+    };
+    const values = dm._g4HotToRowValues(e);
+    const cols = dm._getG4HotColumns();
+
+    const airAddr1Idx = cols.indexOf('air_address_1');
+    assert.equal(values[airAddr1Idx], 'ac1');
+    assert.equal(values[airAddr1Idx + 1], 'ac2'); // air_address_2
+    assert.deepEqual(values[airAddr1Idx + 2], ['ac3']); // air_address_residual
+
+    const state1Idx = cols.indexOf('state_1');
+    assert.equal(values[state1Idx], 1);
+    assert.equal(values[state1Idx + 1], 2);
+    assert.deepEqual(values[state1Idx + 2], [3]);
+
+    const elecAddr1Idx = cols.indexOf('elec_address_1');
+    assert.equal(values[elecAddr1Idx], 'e1');
+    assert.equal(values[elecAddr1Idx + 1], null); // only 1 element
+    assert.equal(values[elecAddr1Idx + 2], null); // no residual
+  });
+
+  it('produces correct column count', () => {
+    const dm = new DatabaseManager({ host: 'x', port: 5432, user: 'x', password: 'x', database: 'x' });
+    const e = buildBasePayload();
+    const cols = dm._getG4HotColumns();
+    const values = dm._g4HotToRowValues(e);
+    assert.equal(values.length, cols.length);
+  });
+
+  it('writes power helper fields as null temporarily', () => {
+    const dm = new DatabaseManager({ host: 'x', port: 5432, user: 'x', password: 'x', database: 'x' });
+    const e = {
+      ...buildBasePayload(),
+      extra: {
+        power_carbon_on: 1.5,
+        power_carbon_off: 2.5,
+        power_person_exist: 3.5,
+        power_person_left: 4.5,
+      },
+    };
+    const cols = dm._getG4HotColumns();
+    const values = dm._g4HotToRowValues(e);
+    assert.equal(values[cols.indexOf('power_carbon_on')], null);
+    assert.equal(values[cols.indexOf('power_carbon_off')], null);
+    assert.equal(values[cols.indexOf('power_person_exist')], null);
+    assert.equal(values[cols.indexOf('power_person_left')], null);
+  });
+
+  it('generates lowercase guid without hyphens when missing', () => {
+    const dm = new DatabaseManager({ host: 'x', port: 5432, user: 'x', password: 'x', database: 'x' });
+    const e = buildBasePayload();
+    const cols = dm._getG4HotColumns();
+    const values = dm._g4HotToRowValues(e);
+    const guid = values[cols.indexOf('guid')];
+    assert.match(guid, /^[0-9a-f]{32}$/);
+  });
+
+  it('normalizes provided guid to lowercase without hyphens', () => {
+    const dm = new DatabaseManager({ host: 'x', port: 5432, user: 'x', password: 'x', database: 'x' });
+    const e = { ...buildBasePayload(), guid: 'A0B1C2D3-E4F5-6789-ABCD-EF0123456789' };
+    const cols = dm._getG4HotColumns();
+    const values = dm._g4HotToRowValues(e);
+    const guid = values[cols.indexOf('guid')];
+    assert.equal(guid, 'a0b1c2d3e4f56789abcdef0123456789');
+  });
+});
+
+describe('DatabaseManager: _formatPgCol', () => {
+  it('formats boolean values correctly', () => {
+    const dm = new DatabaseManager({ host: 'x', port: 5432, user: 'x', password: 'x', database: 'x' });
+    assert.equal(dm._formatPgCol(true), 't');
+    assert.equal(dm._formatPgCol(false), 'f');
+    assert.equal(dm._formatPgCol(null), '\\N');
+  });
+});
+
+describe('DatabaseManager: insertHeartbeatEventsDual', () => {
+  it('returns empty results when both targets disabled', async () => {
+    const dm = new DatabaseManager({
+      host: 'x', port: 5432, user: 'x', password: 'x', database: 'x',
+      legacyHeartbeatEnabled: false, g4HotHeartbeatEnabled: false,
+    });
+    const result = await dm.insertHeartbeatEventsDual([buildBasePayload()]);
+    assert.equal(result.legacy.enabled, false);
+    assert.equal(result.g4Hot.enabled, false);
+    assert.equal(result.legacy.insertedCount, 0);
+    assert.equal(result.g4Hot.insertedCount, 0);
+  });
+});
diff --git a/test/stats.test.js b/test/stats.test.js
index cc3593f..fcd8152 100644
--- a/test/stats.test.js
+++ b/test/stats.test.js
@@ -43,15 +43,17 @@ describe('StatsReporter', () => {
     const reporter = new StatsReporter({ redis, stats });
     reporter.flushOnce();
 
-    assert.equal(calls.push.length, 4);
-    assert.equal(calls.push[0].level, 'info');
-    assert.equal(calls.push[1].level, 'info');
-    assert.equal(calls.push[2].level, 'info');
-    assert.equal(calls.push[3].level, 'info');
-    assert.match(calls.push[0].message, /^\[STATS\] \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d{3} 数据库写入量: 7条$/);
-    assert.match(calls.push[1].message, /^\[STATS\] \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d{3} 数据库写入失败量: 2条$/);
-    assert.match(calls.push[2].message, /^\[STATS\] \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d{3} 数据过滤量: 8条$/);
-    assert.match(calls.push[3].message, /^\[STATS\] \d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d{3} Kafka拉取量: 9条$/);
+    assert.equal(calls.push.length, 9);
+    for (const c of calls.push) assert.equal(c.level, 'info');
+    assert.match(calls.push[0].message, /Legacy写入量: 7条$/);
+    assert.match(calls.push[1].message, /Legacy写入失败量: 2条$/);
+    assert.match(calls.push[2].message, /G4Hot写入量: 0条$/);
+    assert.match(calls.push[3].message, /G4Hot写入失败量: 0条$/);
+    assert.match(calls.push[4].message, /RoomStatus写入量: 0条$/);
+    assert.match(calls.push[5].message, /RoomStatus失败量: 0条$/);
+    assert.match(calls.push[6].message, /G4Hot错误表插入量: 0条$/);
+    assert.match(calls.push[7].message, /数据过滤量: 8条$/);
+    assert.match(calls.push[8].message, /Kafka拉取量: 9条$/);
   });
 });
 
diff --git a/vite.config.js b/vite.config.js
index 079434f..b810cdf 100644
--- a/vite.config.js
+++ b/vite.config.js
@@ -14,7 +14,7 @@ export default defineConfig({
         'kafka-node', 'pg', 'redis', 'pg-copy-streams',
         // Node.js core modules
         'events', 'url', 'crypto', 'util', 'net', 'tls', 'buffer', 'path', 'stream', 'stream/promises',
-        'node:zlib', 'node:fs', 'node:path', 'node:url', 'node:stream', 'node:stream/promises'
+        'node:crypto', 'node:zlib', 'node:fs', 'node:path', 'node:url', 'node:stream', 'node:stream/promises'
       ],
       output: {
         globals: {