perf: skip raw freshness count scan

test: check raw freshness without event date filter
fix: verify raw freshness by received time
2026-07-02 09:30:15 +08:00 · 2026-07-02 09:27:22 +08:00 · 2026-07-02 09:16:45 +08:00 · 2026-07-02 09:11:50 +08:00 · 2026-07-02 08:50:19 +08:00 · 2026-07-02 08:47:05 +08:00
45 changed files with 5574 additions and 190 deletions
--- a/deploy/portainer/docker-compose-go.yml
+++ b/deploy/portainer/docker-compose-go.yml
@@ -44,11 +44,21 @@ services:
      YUTONG_MQTT_CLIENT_ID: ${YUTONG_MQTT_CLIENT_ID:-lingniu-go-yutong-mqtt}
      YUTONG_MQTT_USERNAME: ${YUTONG_MQTT_USERNAME:-}
      YUTONG_MQTT_PASSWORD: ${YUTONG_MQTT_PASSWORD:-}
+      YUTONG_MQTT_CLEAN_SESSION: ${YUTONG_MQTT_CLEAN_SESSION:-false}
+      YUTONG_MQTT_KEEP_ALIVE_SECONDS: ${YUTONG_MQTT_KEEP_ALIVE_SECONDS:-20}
+      YUTONG_MQTT_CONNECTION_TIMEOUT_SECONDS: ${YUTONG_MQTT_CONNECTION_TIMEOUT_SECONDS:-10}
+      YUTONG_MQTT_TLS_CA_PEM: ${YUTONG_MQTT_TLS_CA_PEM:-}
+      YUTONG_MQTT_TLS_CLIENT_PEM: ${YUTONG_MQTT_TLS_CLIENT_PEM:-}
+      YUTONG_MQTT_TLS_CLIENT_KEY: ${YUTONG_MQTT_TLS_CLIENT_KEY:-}
+      YUTONG_MQTT_TLS_HOSTNAME_VERIFICATION_ENABLED: ${YUTONG_MQTT_TLS_HOSTNAME_VERIFICATION_ENABLED:-true}
      IDENTITY_MYSQL_DSN: ${IDENTITY_MYSQL_DSN:-}
      VEHICLE_IDENTITY_TABLE: ${VEHICLE_IDENTITY_TABLE:-vehicle_identity_binding}
    ports:
      - "${GO_GB32960_TCP_PORT:-32960}:32960"
      - "${GO_JT808_TCP_PORT:-808}:808"
+    volumes:
+      - "${KAFKA_SPOOL_HOST_DIR:-/opt/lingniu-go/spool/gateway}:${KAFKA_SPOOL_DIR:-/data/spool/gateway}"
+      - "${YUTONG_MQTT_CERT_HOST_DIR:-/opt/lingniuServices/certificate/yutong/vehicledatareception}:${YUTONG_MQTT_CERT_CONTAINER_DIR:-/opt/lingniuServices/certificate/yutong/vehicledatareception}:ro"

  go-history-writer:
    <<: *restart-policy
@@ -96,6 +106,9 @@ services:
      REDIS_DB: ${REDIS_DB:-50}
      ONLINE_TTL_SECONDS: ${ONLINE_TTL_SECONDS:-600}
      MYSQL_DSN: ${MYSQL_DSN:-}
+      TDENGINE_DRIVER: ${TDENGINE_DRIVER:-taosWS}
+      TDENGINE_DSN: ${TDENGINE_DSN:-}
+      TDENGINE_DATABASE: ${TDENGINE_DATABASE:-lingniu_vehicle_ts}
    ports:
      - "${GO_REALTIME_HTTP_PORT:-20210}:20210"

--- a/deploy/systemd/README.md
+++ b/deploy/systemd/README.md
@@ -0,0 +1,66 @@
+# Go Vehicle Gateway Native Deployment
+
+本目录用于 ECS 原生部署。当前 goal 后续不再使用 Docker/Portainer 作为 Go 接入链路的部署方式。
+
+## Runtime Layout
+
+```text
+/opt/lingniu-go-native/
+  current -> /opt/lingniu-go-native/releases/<git-short-sha>
+  releases/<git-short-sha>/
+    gateway
+    history-writer
+    stat-writer
+    realtime-api
+  env/
+    gateway.env
+    history-writer.env
+    stat-writer.env
+    realtime-api.env
+  spool/gateway/
+```
+
+## Services
+
+| systemd unit | Binary | Purpose |
+|---|---|---|
+| `lingniu-go-gateway.service` | `gateway` | GB32960 TCP `32960`、JT808 TCP `808`、宇通 MQTT 接入，写 Kafka RAW/unified |
+| `lingniu-go-history-writer.service` | `history-writer` | 消费 RAW topic，写 TDengine `raw_frames` 和核心时序表 |
+| `lingniu-go-stat-writer.service` | `stat-writer` | 消费 RAW topic，写 MySQL `vehicle_daily_metric` |
+| `lingniu-go-realtime-api.service` | `realtime-api` | 消费 unified topic，写 Redis，并提供 realtime/raw/stat 查询 API |
+
+## Build
+
+在开发机或 CI 上构建 Linux amd64 二进制：
+
+```bash
+cd go/vehicle-gateway
+CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags='-s -w' -o /tmp/lingniu-go-native/gateway ./cmd/gateway
+CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags='-s -w' -o /tmp/lingniu-go-native/history-writer ./cmd/history-writer
+CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags='-s -w' -o /tmp/lingniu-go-native/stat-writer ./cmd/stat-writer
+CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags='-s -w' -o /tmp/lingniu-go-native/realtime-api ./cmd/realtime-api
+```
+
+## Cutover Notes
+
+1. 先上传二进制到新 release 目录并更新 `current` symlink。
+2. 从现有生产 env 生成四个 systemd 专用 env 文件；不要把密钥写入仓库。
+3. 停止旧 Docker Go 容器或 Java 容器，释放 `808`、`32960`、`20210`。
+4. 执行：
+
+```bash
+systemctl daemon-reload
+systemctl enable lingniu-go-gateway lingniu-go-history-writer lingniu-go-stat-writer lingniu-go-realtime-api
+systemctl restart lingniu-go-gateway lingniu-go-history-writer lingniu-go-stat-writer lingniu-go-realtime-api
+```
+
+## Verification
+
+```bash
+systemctl is-active lingniu-go-gateway lingniu-go-history-writer lingniu-go-stat-writer lingniu-go-realtime-api
+ss -lntp | egrep ':(808|32960|20210)\b'
+journalctl -u lingniu-go-gateway --since '5 minutes ago' --no-pager
+curl -sS 'http://127.0.0.1:20210/api/history/raw-frames?protocol=JT808&limit=1'
+curl -sS 'http://127.0.0.1:20210/api/history/raw-frames?protocol=GB32960&limit=1'
+curl -sS 'http://127.0.0.1:20210/api/history/raw-frames?protocol=YUTONG_MQTT&limit=1'
+```
--- a/deploy/systemd/lingniu-go-gateway.service
+++ b/deploy/systemd/lingniu-go-gateway.service
@@ -0,0 +1,18 @@
+[Unit]
+Description=Lingniu Go Vehicle Gateway
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+WorkingDirectory=/opt/lingniu-go-native/current
+EnvironmentFile=/opt/lingniu-go-native/env/gateway.env
+ExecStart=/opt/lingniu-go-native/current/gateway
+Restart=always
+RestartSec=3
+LimitNOFILE=1048576
+KillSignal=SIGTERM
+TimeoutStopSec=30
+
+[Install]
+WantedBy=multi-user.target
--- a/deploy/systemd/lingniu-go-history-writer.service
+++ b/deploy/systemd/lingniu-go-history-writer.service
@@ -0,0 +1,18 @@
+[Unit]
+Description=Lingniu Go History Writer
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+WorkingDirectory=/opt/lingniu-go-native/current
+EnvironmentFile=/opt/lingniu-go-native/env/history-writer.env
+ExecStart=/opt/lingniu-go-native/current/history-writer
+Restart=always
+RestartSec=3
+LimitNOFILE=1048576
+KillSignal=SIGTERM
+TimeoutStopSec=30
+
+[Install]
+WantedBy=multi-user.target
--- a/deploy/systemd/lingniu-go-realtime-api.service
+++ b/deploy/systemd/lingniu-go-realtime-api.service
@@ -0,0 +1,18 @@
+[Unit]
+Description=Lingniu Go Realtime API
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+WorkingDirectory=/opt/lingniu-go-native/current
+EnvironmentFile=/opt/lingniu-go-native/env/realtime-api.env
+ExecStart=/opt/lingniu-go-native/current/realtime-api
+Restart=always
+RestartSec=3
+LimitNOFILE=1048576
+KillSignal=SIGTERM
+TimeoutStopSec=30
+
+[Install]
+WantedBy=multi-user.target
--- a/deploy/systemd/lingniu-go-stat-writer.service
+++ b/deploy/systemd/lingniu-go-stat-writer.service
@@ -0,0 +1,18 @@
+[Unit]
+Description=Lingniu Go Stat Writer
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+WorkingDirectory=/opt/lingniu-go-native/current
+EnvironmentFile=/opt/lingniu-go-native/env/stat-writer.env
+ExecStart=/opt/lingniu-go-native/current/stat-writer
+Restart=always
+RestartSec=3
+LimitNOFILE=1048576
+KillSignal=SIGTERM
+TimeoutStopSec=30
+
+[Install]
+WantedBy=multi-user.target
--- a/docs/operations/current-ecs-deployment.md
+++ b/docs/operations/current-ecs-deployment.md
@@ -0,0 +1,227 @@
+# 当前 ECS Go 原生部署说明
+
+更新时间：2026-07-02 01:30 CST
+
+本文档记录当前 `lingniu-vehicle-ingest` 的生产运行面。当前 goal 的接入链路已经切到 Go 原生 systemd 部署，不再以 Docker/Portainer 作为生产运行方式。密钥只维护在 ECS 环境文件或受控凭据中，不写入 Git。
+
+## 部署范围
+
+| systemd 服务 | 二进制 | 说明 | 对外端口 |
+| --- | --- | --- | --- |
+| `lingniu-go-gateway.service` | `gateway` | GB32960 TCP、JT808 TCP、宇通 MQTT 接入，解析后写 Kafka RAW 和统一事件 | TCP `32960`、TCP `808` |
+| `lingniu-go-history-writer.service` | `history-writer` | 消费 Kafka RAW，写 TDengine RAW、位置点、里程点核心表 | 无 HTTP |
+| `lingniu-go-stat-writer.service` | `stat-writer` | 消费 Kafka RAW，按总里程差值法写 MySQL 每日指标 | 无 HTTP |
+| `lingniu-go-realtime-api.service` | `realtime-api` | 消费统一事件写 Redis，并提供实时、历史、统计查询 API | HTTP `20210` |
+
+信达 Push 已废弃，不参与当前 Go 生产链路。旧 Java/Docker 服务不应占用 `808`、`32960`、`20210`。
+
+## 应用 ECS
+
+| 项 | 值 |
+| --- | --- |
+| 公网 IP | `115.29.187.205` |
+| 登录用户 | `root` |
+| 部署目录 | `/opt/lingniu-go-native` |
+| 当前 release | `/opt/lingniu-go-native/current` |
+| 环境文件目录 | `/opt/lingniu-go-native/env` |
+| systemd unit 目录 | `/etc/systemd/system` |
+| 对外服务 | `32960`、`808`、`20210` |
+
+运行目录结构：
+
+```text
+/opt/lingniu-go-native/
+  current -> /opt/lingniu-go-native/releases/<git-short-sha>
+  releases/<git-short-sha>/
+    gateway
+    history-writer
+    stat-writer
+    realtime-api
+  env/
+    gateway.env
+    history-writer.env
+    stat-writer.env
+    realtime-api.env
+  spool/gateway/
+```
+
+## 中间件
+
+| 组件 | 内网地址 | 公网地址 | 用途 |
+| --- | --- | --- | --- |
+| Kafka | `172.17.111.56:9092` | `114.55.58.251:9092` | RAW 和统一事件消息总线 |
+| TDengine | `172.17.111.57:6041` | `115.29.185.82:6041` | RAW、位置、里程点时序热存储 |
+| MySQL RDS | `rm-bp179zbv481rnw3e2.mysql.rds.aliyuncs.com:3306` | `rm-bp179zbv481rnw3e2no.mysql.rds.aliyuncs.com:3306` | 身份映射、JT808 注册、每日指标 |
+| Redis RDS | `r-bp1u741kij7e51i481.redis.rds.aliyuncs.com:6379` | 无 | 准实时车辆状态缓存 |
+
+生产应用之间访问中间件优先使用内网地址。RDS 白名单需要允许应用 ECS 私网访问。
+
+## Kafka Topic
+
+| Topic | 生产者 | 消费者 | 内容 |
+| --- | --- | --- | --- |
+| `vehicle.raw.go.gb32960.v1` | `gateway` | `history-writer`、`stat-writer` | GB32960 完整 RAW 记录 |
+| `vehicle.raw.go.jt808.v1` | `gateway` | `history-writer`、`stat-writer` | JT808 完整 RAW 记录 |
+| `vehicle.raw.go.yutong-mqtt.v1` | `gateway` | `history-writer` | 宇通 MQTT 完整 RAW 记录 |
+| `vehicle.event.go.unified.v1` | `gateway` | `realtime-api` | 三类协议统一事件，用于 Redis 实时状态 |
+
+`gateway` 配置了 Kafka retry；生产 env 中启用 `KAFKA_SPOOL_DIR` 时，本地 spool 可在 Kafka 短暂不可用后回放。
+
+Kafka 消费组：
+
+| Consumer Group | Topic | 当前验证 |
+| --- | --- | --- |
+| `go-history-writer` | 三个 `vehicle.raw.go.*` topic | 2026-07-02 验证 lag 为 `0` |
+| `go-stat-writer` | `vehicle.raw.go.gb32960.v1`、`vehicle.raw.go.jt808.v1` | 2026-07-02 验证 lag 为 `0` |
+| `go-realtime-api` | `vehicle.event.go.unified.v1` | 2026-07-02 验证 lag 为 `0` |
+
+可重复 smoke：
+
+```bash
+python3 tools/go_kafka_prod_smoke.py --host 114.55.58.251 --user root --max-lag 100
+```
+
+该脚本通过 SSH 登录 Kafka ECS，检查 Go 生产 topic 是否存在，并校验 `go-history-writer`、`go-stat-writer`、`go-realtime-api` 的消费组 lag。运行环境需要已配置 SSH 免密或已建立可用的 SSH 认证方式。
+
+## TDengine 数据层
+
+默认数据库：`lingniu_vehicle_ts`
+
+| 表 | 类型 | 说明 |
+| --- | --- | --- |
+| `raw_frames` | stable | 完整 RAW 帧，包含 `raw_hex`、`parsed_json`、`fields_json`、`source_endpoint` 和协议/车辆 tags |
+| `vehicle_locations` | stable | 最小化位置历史，保留 `frame_id` 回链 RAW |
+| `vehicle_mileage_points` | stable | 最小化总里程点，供历史查询和统计复核 |
+
+设计原则：
+
+- 完整结构化 payload 只落在 `raw_frames.parsed_json` / `fields_json`。
+- `vehicle_locations` 和 `vehicle_mileage_points` 只保留核心查询字段，不重复保存完整 JSON。
+- `telemetry_fields` 不由当前服务维护，字段配置解析由独立子服务处理。
+- API 传入东八区时间时，服务会转换为 TDengine 当前存储使用的 UTC 字面量再查询。
+
+## MySQL 数据层
+
+默认业务库：`lingniu_vehicle_data`
+
+| 表 | 维护方 | 说明 |
+| --- | --- | --- |
+| `vehicle_identity_binding` | 人工/外部主数据 | VIN 映射主表，用 `phone`、`device_id`、`plate` 降级定位 VIN |
+| `jt808_registration` | `gateway` 自动写入 | 仅 JT808 注册和鉴权记录，以 `phone` 作为主键，记录设备、车牌、厂家、鉴权、来源端点 |
+| `vehicle_daily_metric` | `stat-writer` 自动写入 | 每日指标表，保存 `daily_mileage_km` 和 `daily_total_mileage_km` |
+
+每日里程算法：
+
+```text
+daily_mileage_km = 当日最大 total_mileage_km - 当日最小 total_mileage_km
+daily_total_mileage_km = 当日最大 total_mileage_km
+```
+
+统计按 `Asia/Shanghai` 自然日归档，当前支持 GB32960、JT808、宇通 MQTT 中能解析出 `total_mileage_km` 的数据。JT808 的总里程来自位置附加信息 `0x01`，单位按协议转换为 km；宇通 MQTT 的 `TOTAL_MILEAGE` 原始单位为米，入库前转换为 km。
+
+## Redis 实时层
+
+`realtime-api` 消费 `vehicle.event.go.unified.v1`，按 VIN/vehicle key 维护准实时快照。主要能力：
+
+| API | 说明 |
+| --- | --- |
+| `/api/realtime/vehicles/{vin}` | 查询车辆合并实时快照 |
+| `/api/realtime/vehicles/{vin}/online` | 查询车辆是否在线 |
+| `/api/realtime/vehicles/{vin}/protocols/{protocol}` | 查询指定协议的实时快照 |
+
+Redis 只作为实时缓存；历史和统计以 TDengine/MySQL 为准。
+
+## API 入口
+
+公网基础地址：
+
+```text
+http://115.29.187.205:20210
+```
+
+常用查询：
+
+```bash
+curl -sS 'http://115.29.187.205:20210/api/history/raw-frames?protocol=GB32960&dateFrom=2026-07-02T00:00:00%2B08:00&dateTo=2026-07-03T00:00:00%2B08:00&limit=1'
+curl -sS 'http://115.29.187.205:20210/api/history/raw-frames?protocol=JT808&dateFrom=2026-07-02T00:00:00%2B08:00&dateTo=2026-07-03T00:00:00%2B08:00&limit=1'
+curl -sS 'http://115.29.187.205:20210/api/history/raw-frames?protocol=YUTONG_MQTT&dateFrom=2026-07-02T00:00:00%2B08:00&dateTo=2026-07-03T00:00:00%2B08:00&limit=1'
+curl -sS 'http://115.29.187.205:20210/api/history/locations?protocol=JT808&dateFrom=2026-07-02T00:00:00%2B08:00&dateTo=2026-07-03T00:00:00%2B08:00&limit=1'
+curl -sS 'http://115.29.187.205:20210/api/history/mileage-points?protocol=JT808&dateFrom=2026-07-02T00:00:00%2B08:00&dateTo=2026-07-03T00:00:00%2B08:00&limit=1'
+curl -sS 'http://115.29.187.205:20210/api/stats/daily-metrics?dateFrom=2026-07-02&dateTo=2026-07-02&limit=20'
+```
+
+分页参数统一使用 `limit` 和 `offset`。
+
+部署后推荐直接运行 Go 原生生产 smoke：
+
+```bash
+python3 tools/go_prod_acceptance.py --date 2026-07-02
+```
+
+该聚合脚本会串行执行 systemd/端口检查、Kafka topic/consumer lag 检查、HTTP 数据链路检查，任一子检查失败时整体退出码为非 0。需要 SSH 可登录应用 ECS 和 Kafka ECS。
+
+也可以单独运行子检查：
+
+```bash
+python3 tools/go_systemd_prod_smoke.py --host 115.29.187.205 --user root
+python3 tools/go_native_prod_smoke.py --date 2026-07-02 --timeout 8
+```
+
+`go_systemd_prod_smoke.py` 通过 SSH 检查四个 Go systemd 服务是否 `active` 且 `enabled`，并确认 `808`、`32960` 由 `gateway` 监听、`20210` 由 `realtime-api` 监听，同时要求 `/opt/lingniu-go-native/current` 指向有效 release、四个生产二进制均可执行、`/opt/lingniu-go-native/spool/gateway` 没有待回放文件，避免旧 Java/Docker 进程占用生产端口、部署目录错乱或 Kafka spool 静默堆积。运行环境需要已配置 SSH 免密或已建立可用的 SSH 认证方式。
+
+`go_native_prod_smoke.py` 通过 `20210` HTTP API 验证 GB32960、JT808、宇通 MQTT 的 RAW 查询及结构化 `parsed_json`，三类协议的位置和里程点查询及 `frame_id` RAW 回链，GB32960/JT808 的 `daily_mileage_km`、`daily_total_mileage_km` 统计公式，以及三类协议的 Redis realtime snapshot、online、protocol 查询。实时 snapshot/protocol 查询会校验 `updated_at_ms` 新鲜度；默认检查今天东八区数据时，还会要求三类 RAW 最新样本不超过 15 分钟，避免旧数据误判为接收正常；任一检查不达标时退出码为非 0。
+
+## 部署命令
+
+推荐使用仓库脚本发布完整 Go 原生 release。脚本会在本机/CI 构建 Linux amd64 四个二进制，打包上传到应用 ECS，切换 `/opt/lingniu-go-native/current`，逐个重启四个 systemd 服务，等待 gateway Kafka spool 清空，并在发布后运行聚合生产验收：
+
+```bash
+python3 tools/go_native_deploy.py --date 2026-07-02
+```
+
+脚本不会保存 SSH 或数据库密钥；认证仍使用当前操作环境可用的 SSH 凭据。需要跳过发布后验收时可显式追加 `--skip-acceptance`，但生产发布默认应保留验收。发布后 spool 默认最多等待 `900` 秒，可用 `--spool-drain-timeout` 和 `--spool-poll-interval` 调整。
+
+脚本执行的发布动作等价于：
+
+```bash
+CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags='-s -w' ./cmd/gateway
+CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags='-s -w' ./cmd/history-writer
+CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags='-s -w' ./cmd/stat-writer
+CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags='-s -w' ./cmd/realtime-api
+scp release.tar.gz root@115.29.187.205:/tmp/
+ln -sfn /opt/lingniu-go-native/releases/<git-short-sha> /opt/lingniu-go-native/current
+systemctl daemon-reload
+systemctl restart lingniu-go-gateway lingniu-go-history-writer lingniu-go-stat-writer lingniu-go-realtime-api
+```
+
+只更新查询 API 时，可以仅替换 `/opt/lingniu-go-native/current/realtime-api` 并重启：
+
+```bash
+systemctl restart lingniu-go-realtime-api.service
+```
+
+## 运行检查
+
+```bash
+python3 tools/go_systemd_prod_smoke.py --host 115.29.187.205 --user root
+
+systemctl is-active lingniu-go-gateway lingniu-go-history-writer lingniu-go-stat-writer lingniu-go-realtime-api
+ss -lntp | egrep ':(808|32960|20210)\b'
+journalctl -u lingniu-go-gateway --since '5 minutes ago' --no-pager
+journalctl -u lingniu-go-history-writer --since '5 minutes ago' --no-pager
+journalctl -u lingniu-go-stat-writer --since '5 minutes ago' --no-pager
+journalctl -u lingniu-go-realtime-api --since '5 minutes ago' --no-pager
+```
+
+2026-07-02 01:30 CST 已验证：
+
+- 四个 Go systemd 服务均为 `active` 且 `enabled`。
+- `/opt/lingniu-go-native/current` 指向有效 release，四个生产二进制均存在且可执行。
+- `gateway` 正在监听 `32960` 和 `808`。
+- `realtime-api` 正在监听 `20210`。
+- gateway Kafka spool 当前无待回放文件。
+- GB32960、JT808、YUTONG_MQTT 的东八区 RAW 查询均可命中生产数据，且最新 RAW 样本包含结构化 `parsed_json`。
+- GB32960、JT808、YUTONG_MQTT 的最新 RAW 样本均在 15 分钟内。
+- GB32960、JT808、YUTONG_MQTT 的 `vehicle_locations`、`vehicle_mileage_points` 查询均可命中生产数据，且样本包含 `frame_id` 回链 RAW。
+- `vehicle_daily_metric` 可查到 `daily_mileage_km` 和 `daily_total_mileage_km`，且公式满足 `daily_mileage_km = latest_total_mileage_km - first_total_mileage_km`、`daily_total_mileage_km = latest_total_mileage_km`。
+- Redis realtime 可查到 GB32960、JT808、YUTONG_MQTT 的在线状态和协议快照，且 snapshot/protocol 快照最近刷新。
--- a/docs/operations/go-vehicle-gateway-verification-result-2026-07-01.md
+++ b/docs/operations/go-vehicle-gateway-verification-result-2026-07-01.md
@@ -657,3 +657,232 @@ http://115.29.187.205:20210/api/realtime/vehicles/LKLG7C4E3NA774736/online
 ```

 说明：本次发布重启窗口产生的 spool 正在回放下降，且最近 1 分钟没有新增；gateway/realtime-api 最近日志未见 error、failed、Kafka publish error。
+
+## 2026-07-01 23:50 生产端口接管与 RAW 查询 API 复验
+
+部署版本：
+
+- Git commit：`5937132`
+- 镜像：`crpi-85r4m0ackrm3qpje.cn-shanghai.personal.cr.aliyuncs.com/oneos/vehicle-gateway-go:go-5937132-20260701234220`
+
+生产端口状态：
+
+```text
+go-vehicle-gateway 0.0.0.0:808->808/tcp
+go-vehicle-gateway 0.0.0.0:32960->32960/tcp
+```
+
+旧 Java 容器状态：
+
+```text
+gb32960-ingest-app              restart=no status=exited
+jt808-ingest-app                restart=no status=exited
+yutong-mqtt-app                 restart=no status=exited
+vehicle-history-app             restart=no status=exited
+vehicle-analytics-app           restart=no status=exited
+vehicle-state-app               restart=no status=exited
+telemetry-field-parser-app      restart=no status=exited
+```
+
+生产连接确认：
+
+- JT808 端口 `808` 已收到外部连接：`222.66.200.68`、`115.231.168.135`。
+- GB32960 端口 `32960` 已收到外部连接：`8.134.95.166`、`117.160.0.65`。
+- ECS 当前没有 `8089` 监听。
+
+RAW 查询 API：
+
+```text
+GET /api/history/raw-frames
+```
+
+生产可访问样例：
+
+```text
+http://115.29.187.205:20210/api/history/raw-frames?protocol=JT808&vin=LKLG7C4E3NA774736&messageId=0x0200&limit=1
+http://115.29.187.205:20210/api/history/raw-frames?protocol=GB32960&vin=LB9A32A21R0LS1707&limit=1
+```
+
+接口复验结果：
+
+```text
+JT808_RAW:
+total=1
+protocol=JT808
+vin=LKLG7C4E3NA774736
+phone=013079963379
+message_id=512
+message_id_hex=0x0200
+parse_status=OK
+raw_hex_len=94
+parsed_json_len=651
+fields_json_len=186
+
+GB32960_RAW:
+total=1
+protocol=GB32960
+vin=LB9A32A21R0LS1707
+message_id=2
+message_id_hex=0x0002
+parse_status=OK
+raw_hex_len=1548
+parsed_json_len=3698
+fields_json_len=563
+```
+
+同轮回归验证：
+
+```text
+GET /api/realtime/vehicles/LKLG7C4E3NA774736/online
+online=true
+protocols=["JT808"]
+
+GET /api/stats/daily-metrics?vin=LB9A32A21R0LS1707&protocol=GB32960&dateFrom=2020-07-01&dateTo=2026-07-01&limit=1
+total=1
+protocol=GB32960
+metric_key=daily_mileage_km
+calculation_method=TOTAL_MILEAGE_DIFF
+```
+
+说明：
+
+- RAW 查询已返回 `raw_hex`、`parsed_json`、`fields_json`，可以用于查看完整解析结果。
+- 日统计和实时查询在生产端口接管后仍可用。
+
+## 2026-07-02 00:00 原生 systemd 部署与宇通 MQTT 复验
+
+根据本次 goal 的新要求，Go 接入链路后续不再使用 Docker 部署。本轮已中断 Docker 镜像构建路径，改为 ECS 原生 Linux 二进制 + systemd。
+
+部署版本：
+
+- Git commit：`594ab2d`
+- 部署目录：`/opt/lingniu-go-native`
+- 当前 release：`/opt/lingniu-go-native/releases/594ab2d`
+- 当前指针：`/opt/lingniu-go-native/current -> /opt/lingniu-go-native/releases/594ab2d`
+
+systemd 服务：
+
+```text
+lingniu-go-gateway.service        active
+lingniu-go-history-writer.service active
+lingniu-go-stat-writer.service    active
+lingniu-go-realtime-api.service   active
+```
+
+端口确认：
+
+```text
+[::]:32960  gateway
+[::]:808    gateway
+[::]:20210  realtime-api
+```
+
+Go Docker 容器已停止：
+
+```text
+go-vehicle-gateway  Exited
+go-history-writer   Exited
+go-stat-writer      Exited
+go-realtime-api     Exited
+```
+
+宇通 MQTT：
+
+```text
+yutong mqtt client started
+mqtt subscribed broker=ssl://cpxlm.axxc.cn:38883 topic=/ytforward/shln/+ qos=1
+```
+
+说明：MQTT broker 存在短连接 `EOF` 后自动重连现象，但订阅后已收到真实数据并落 RAW。
+
+RAW 查询复验：
+
+```text
+GET /api/history/raw-frames?protocol=YUTONG_MQTT&limit=3
+
+total=3
+protocol=YUTONG_MQTT
+vin=LMRKH9AC1R1004131
+vehicle_key=LMRKH9AC1R1004131
+parse_status=OK
+parsed_json_len=1104
+fields_json_len=116
+```
+
+同轮回归：
+
+```text
+GET /api/history/raw-frames?protocol=JT808&vin=LKLG7C4E3NA774736&messageId=0x0200&limit=1
+total=1
+parse_status=OK
+
+GET /api/history/raw-frames?protocol=GB32960&vin=LB9A32A21R0LS1707&limit=1
+total=1
+parse_status=OK
+
+GET /api/realtime/vehicles/LKLG7C4E3NA774736/online
+online=true
+protocols=["JT808"]
+```
+
+本轮落地文件：
+
+- `deploy/systemd/README.md`
+- `deploy/systemd/lingniu-go-gateway.service`
+- `deploy/systemd/lingniu-go-history-writer.service`
+- `deploy/systemd/lingniu-go-stat-writer.service`
+- `deploy/systemd/lingniu-go-realtime-api.service`
+
+## 2026-07-02 00:04 宇通 MQTT EOF 诊断
+
+现象：
+
+Go 原生部署后，`lingniu-go-gateway` 日志中出现多次：
+
+```text
+mqtt connection lost error=EOF
+mqtt connection lost error=write: broken pipe
+mqtt subscribed topic=/ytforward/shln/+ qos=1
+```
+
+10 分钟窗口统计：
+
+```text
+mqtt subscribed = 33
+mqtt connection lost = 32
+```
+
+对照旧 Java `yutong-mqtt-app` 历史日志，停止前也存在同类行为：
+
+```text
+mqtt endpoint [yutong] received topic=/ytforward/shln/1 bytes=574
+mqtt endpoint [yutong] connection lost
+Caused by: java.io.EOFException
+mqtt endpoint [yutong] re-subscribed topic=/ytforward/shln/+ qos=1
+mqtt endpoint [yutong] received topic=/ytforward/shln/3 bytes=586
+```
+
+判断：
+
+- EOF/短连接不是 Go TLS 支持或 systemd 原生部署新引入的问题。
+- 旧 Java 和新 Go 都表现为：订阅、收到数据、broker 断开、自动重连。
+- 当前链路可持续收到宇通 MQTT 数据并写入 TDengine RAW。
+
+复验：
+
+```text
+GET /api/history/raw-frames?protocol=YUTONG_MQTT&limit=1
+
+total=1
+protocol=YUTONG_MQTT
+vin=LMRKH9ACXR1004094
+parse_status=OK
+parsed_json_len=1080
+fields_json_len=115
+```
+
+运维建议：
+
+- 单条 EOF 不作为不可用判断。
+- 以 `YUTONG_MQTT` RAW 入库增长、最近成功 `mqtt subscribed` 时间、服务 `systemctl is-active` 作为可用性判断。
+- 如果 EOF 频率继续升高且 RAW 不再增长，再联系宇通侧确认 broker 长连接策略、同一 clientId 并发限制或网络出口策略。
--- a/docs/operations/go-vehicle-gateway-verification.md
+++ b/docs/operations/go-vehicle-gateway-verification.md
@@ -18,32 +18,40 @@ go build ./cmd/stat-writer
 go build ./cmd/realtime-api
 ```

-## 镜像构建
+## 生产原生部署验证

 ```bash
-cd go/vehicle-gateway
-docker build -t vehicle-gateway-go:local .
+python3 tools/go_prod_acceptance.py --date 2026-07-02
 ```

-同一个镜像包含四个二进制：
+该命令会聚合执行：

- `/app/gateway`
- `/app/history-writer`
- `/app/stat-writer`
- `/app/realtime-api`
+- `go_systemd_prod_smoke.py`：应用 ECS systemd 服务 active/enabled、端口归属和 gateway spool
+- `go_kafka_prod_smoke.py`：Kafka topic 和消费组 lag
+- `go_native_prod_smoke.py`：HTTP API、RAW `parsed_json`、历史核心表 `frame_id` 回链、每日指标公式、Redis 实时新鲜度、TDengine/MySQL/Redis 数据链路

-## Portainer 部署
-
-Go 旁路 stack 文件：
+如需单独检查 systemd：

 ```bash
-deploy/portainer/docker-compose-go.yml
+python3 tools/go_systemd_prod_smoke.py --host 115.29.187.205 --user root
 ```

-必填变量：
+脚本通过 SSH 检查：
+
+- `lingniu-go-gateway.service`
+- `lingniu-go-history-writer.service`
+- `lingniu-go-stat-writer.service`
+- `lingniu-go-realtime-api.service`
+- 上述服务均为 `active` 且 `enabled`
+- `808`、`32960` 由 `gateway` 监听
+- `20210` 由 `realtime-api` 监听
+- `/opt/lingniu-go-native/spool/gateway` 无待回放文件
+
+## 生产环境变量
+
+当前 goal 的生产面使用 ECS 原生 systemd 部署，不再以 Docker/Portainer 作为生产运行方式。以下环境变量维护在 `/opt/lingniu-go-native/env/*.env`：

 ```bash
-LINGNIU_GO_IMAGE_VERSION=<image-version>
 KAFKA_BROKERS=172.17.111.56:9092
 TDENGINE_DSN=root:<password>@ws(172.17.111.57:6041)/lingniu_vehicle_ts
 MYSQL_DSN=lingniu_vehicle:<password>@tcp(rm-bp179zbv481rnw3e2.mysql.rds.aliyuncs.com:3306)/lingniu_vehicle_data?parseTime=true&charset=utf8mb4,utf8&loc=Asia%2FShanghai
@@ -68,23 +76,44 @@ YUTONG_MQTT_PASSWORD=<password>
 ## ECS 进程检查

 ```bash
-docker ps --format 'table {{.Names}}\t{{.Status}}\t{{.Ports}}' \
-  | egrep 'go-vehicle-gateway|go-history-writer|go-stat-writer|go-realtime-api|NAMES'
+systemctl is-active lingniu-go-gateway lingniu-go-history-writer lingniu-go-stat-writer lingniu-go-realtime-api

 ss -lntp | egrep ':(808|32960|20210)\b'
 ```

 ## Kafka 验证

+优先使用 smoke 脚本做可重复检查：
+
+```bash
+python3 tools/go_kafka_prod_smoke.py --host 114.55.58.251 --user root --max-lag 100
+```
+
+脚本会检查 `vehicle.raw.go.gb32960.v1`、`vehicle.raw.go.jt808.v1`、`vehicle.raw.go.yutong-mqtt.v1`、`vehicle.event.go.unified.v1` 是否存在，并汇总 `go-history-writer`、`go-stat-writer`、`go-realtime-api` 的消费 lag。运行环境需要 SSH 免密或已建立可用的 SSH 认证方式。
+
+手工核对命令：
+
 ```bash
 kafka-console-consumer --bootstrap-server 172.17.111.56:9092 \
-  --topic vehicle.raw.jt808.v1 --max-messages 1 --timeout-ms 10000
+  --topic vehicle.raw.go.jt808.v1 --max-messages 1 --timeout-ms 10000

 kafka-console-consumer --bootstrap-server 172.17.111.56:9092 \
-  --topic vehicle.raw.gb32960.v1 --max-messages 1 --timeout-ms 10000
+  --topic vehicle.raw.go.gb32960.v1 --max-messages 1 --timeout-ms 10000

 kafka-console-consumer --bootstrap-server 172.17.111.56:9092 \
-  --topic vehicle.event.unified.v1 --max-messages 1 --timeout-ms 10000
+  --topic vehicle.raw.go.yutong-mqtt.v1 --max-messages 1 --timeout-ms 10000
+
+kafka-console-consumer --bootstrap-server 172.17.111.56:9092 \
+  --topic vehicle.event.go.unified.v1 --max-messages 1 --timeout-ms 10000
+
+kafka-consumer-groups --bootstrap-server 172.17.111.56:9092 \
+  --describe --group go-history-writer
+
+kafka-consumer-groups --bootstrap-server 172.17.111.56:9092 \
+  --describe --group go-stat-writer
+
+kafka-consumer-groups --bootstrap-server 172.17.111.56:9092 \
+  --describe --group go-realtime-api
 ```

 ## TDengine 验证
--- a/go/vehicle-gateway/cmd/gateway/main.go
+++ b/go/vehicle-gateway/cmd/gateway/main.go
@@ -46,12 +46,14 @@ func main() {
 			Addr:     env("GB32960_TCP_ADDR", ":32960"),
 			Extract:  gb32960.ExtractFrames,
 			Parse:    gb32960.ParseFrame,
+			Respond:  gb32960.AutoResponse,
 		},
 		{
 			Protocol: envelope.ProtocolJT808,
 			Addr:     env("JT808_TCP_ADDR", ":808"),
 			Extract:  jt808.ExtractFrames,
 			Parse:    jt808.ParseFrame,
+			Respond:  jt808.NewAutoResponder(env("JT808_REGISTER_AUTH_CODE", "g7gps")).Respond,
 		},
 	}

@@ -81,16 +83,23 @@ func main() {
 	}
 	if envBool("YUTONG_MQTT_ENABLED", false) {
 		client, err := gateway.NewMQTTClient(gateway.MQTTClientConfig{
-			EndpointName: env("YUTONG_MQTT_ENDPOINT", "yutong"),
-			Broker:       env("YUTONG_MQTT_URI", ""),
-			ClientID:     env("YUTONG_MQTT_CLIENT_ID", "lingniu-go-yutong-mqtt"),
-			Username:     env("YUTONG_MQTT_USERNAME", ""),
-			Password:     env("YUTONG_MQTT_PASSWORD", ""),
-			Topics:       splitCSV(env("YUTONG_MQTT_TOPICS", env("YUTONG_MQTT_TOPIC", "/ytforward/shln/+"))),
-			QoS:          byte(envInt("YUTONG_MQTT_QOS", 2)),
-			Sink:         sink,
-			Resolver:     resolver,
-			Logger:       logger,
+			EndpointName:            env("YUTONG_MQTT_ENDPOINT", env("YUTONG_MQTT_ENDPOINT_NAME", "yutong")),
+			Broker:                  env("YUTONG_MQTT_URI", ""),
+			ClientID:                env("YUTONG_MQTT_CLIENT_ID", "lingniu-go-yutong-mqtt"),
+			Username:                env("YUTONG_MQTT_USERNAME", ""),
+			Password:                env("YUTONG_MQTT_PASSWORD", ""),
+			Topics:                  splitCSV(env("YUTONG_MQTT_TOPICS", env("YUTONG_MQTT_TOPIC", "/ytforward/shln/+"))),
+			QoS:                     byte(envInt("YUTONG_MQTT_QOS", 2)),
+			CleanSession:            envBool("YUTONG_MQTT_CLEAN_SESSION", false),
+			KeepAlive:               time.Duration(envInt("YUTONG_MQTT_KEEP_ALIVE_SECONDS", 20)) * time.Second,
+			ConnectTimeout:          time.Duration(envInt("YUTONG_MQTT_CONNECTION_TIMEOUT_SECONDS", 10)) * time.Second,
+			TLSCACertPath:           env("YUTONG_MQTT_TLS_CA_PEM", ""),
+			TLSClientCertPath:       env("YUTONG_MQTT_TLS_CLIENT_PEM", ""),
+			TLSClientKeyPath:        env("YUTONG_MQTT_TLS_CLIENT_KEY", ""),
+			TLSHostnameVerification: envBool("YUTONG_MQTT_TLS_HOSTNAME_VERIFICATION_ENABLED", true),
+			Sink:                    sink,
+			Resolver:                resolver,
+			Logger:                  logger,
 		})
 		if err != nil {
 			logger.Error("build yutong mqtt client failed", "error", err)
--- a/go/vehicle-gateway/cmd/realtime-api/main.go
+++ b/go/vehicle-gateway/cmd/realtime-api/main.go
@@ -15,8 +15,10 @@ import (
 	_ "github.com/go-sql-driver/mysql"
 	"github.com/redis/go-redis/v9"
 	"github.com/segmentio/kafka-go"
+	_ "github.com/taosdata/driver-go/v3/taosWS"

 	"lingniu-vehicle-ingest/go/vehicle-gateway/internal/envelope"
+	"lingniu-vehicle-ingest/go/vehicle-gateway/internal/history"
 	"lingniu-vehicle-ingest/go/vehicle-gateway/internal/observability"
 	"lingniu-vehicle-ingest/go/vehicle-gateway/internal/realtime"
 	"lingniu-vehicle-ingest/go/vehicle-gateway/internal/stats"
@@ -74,6 +76,37 @@ func main() {
 		logger.Warn("MYSQL_DSN is empty; stats query api disabled")
 	}
 	defer closeStats()
+	closeHistory := func() {}
+	if dsn := strings.TrimSpace(os.Getenv("TDENGINE_DSN")); dsn != "" {
+		driver := env("TDENGINE_DRIVER", "taosWS")
+		db, err := sql.Open(driver, dsn)
+		if err != nil {
+			logger.Error("history tdengine open failed", "driver", driver, "error", err)
+			os.Exit(1)
+		}
+		if err := db.PingContext(ctx); err != nil {
+			_ = db.Close()
+			logger.Error("history tdengine ping failed", "driver", driver, "error", err)
+			os.Exit(1)
+		}
+		closeHistory = func() { _ = db.Close() }
+		database := env("TDENGINE_DATABASE", history.DefaultDatabase)
+		mux.Handle("/api/history/raw-frames", history.NewRawFrameHandler(history.NewRawFrameRepository(db, database)))
+		mux.Handle("/api/history/locations", history.NewLocationHandler(history.NewLocationRepository(db, database)))
+		mux.Handle("/api/history/mileage-points", history.NewMileagePointHandler(history.NewMileagePointRepository(db, database)))
+		logger.Info("history query enabled", "driver", driver, "database", database)
+	} else {
+		historyUnavailable := func(w http.ResponseWriter, _ *http.Request) {
+			w.Header().Set("Content-Type", "application/json")
+			w.WriteHeader(http.StatusServiceUnavailable)
+			_ = json.NewEncoder(w).Encode(map[string]any{"error": "TDENGINE_DSN is not configured"})
+		}
+		mux.HandleFunc("/api/history/raw-frames", historyUnavailable)
+		mux.HandleFunc("/api/history/locations", historyUnavailable)
+		mux.HandleFunc("/api/history/mileage-points", historyUnavailable)
+		logger.Warn("TDENGINE_DSN is empty; history query api disabled")
+	}
+	defer closeHistory()

 	server := &http.Server{
 		Addr:              env("HTTP_ADDR", ":20210"),
--- a/go/vehicle-gateway/internal/gateway/mqtt_client.go
+++ b/go/vehicle-gateway/internal/gateway/mqtt_client.go
@@ -2,9 +2,13 @@ package gateway

 import (
 	"context"
+	"crypto/tls"
+	"crypto/x509"
 	"encoding/hex"
 	"errors"
+	"fmt"
 	"log/slog"
+	"os"
 	"strings"
 	"time"

@@ -17,16 +21,23 @@ import (
 )

 type MQTTClientConfig struct {
-	EndpointName string
-	Broker       string
-	ClientID     string
-	Username     string
-	Password     string
-	Topics       []string
-	QoS          byte
-	Sink         eventbus.Sink
-	Resolver     identity.Resolver
-	Logger       *slog.Logger
+	EndpointName            string
+	Broker                  string
+	ClientID                string
+	Username                string
+	Password                string
+	Topics                  []string
+	QoS                     byte
+	CleanSession            bool
+	KeepAlive               time.Duration
+	ConnectTimeout          time.Duration
+	TLSCACertPath           string
+	TLSClientCertPath       string
+	TLSClientKeyPath        string
+	TLSHostnameVerification bool
+	Sink                    eventbus.Sink
+	Resolver                identity.Resolver
+	Logger                  *slog.Logger
 }

 type MQTTClient struct {
@@ -60,17 +71,47 @@ func NewMQTTClient(cfg MQTTClientConfig) (*MQTTClient, error) {
 }

 func (c *MQTTClient) Start(ctx context.Context) error {
+	opts, err := c.buildOptions(ctx)
+	if err != nil {
+		return err
+	}
+
+	c.client = mqtt.NewClient(opts)
+	token := c.client.Connect()
+	if token.Wait() && token.Error() != nil {
+		return token.Error()
+	}
+	go func() {
+		<-ctx.Done()
+		if c.client != nil && c.client.IsConnected() {
+			c.client.Disconnect(250)
+		}
+	}()
+	return nil
+}
+
+func (c *MQTTClient) buildOptions(ctx context.Context) (*mqtt.ClientOptions, error) {
+	keepAlive := c.cfg.KeepAlive
+	if keepAlive <= 0 {
+		keepAlive = 20 * time.Second
+	}
+	connectTimeout := c.cfg.ConnectTimeout
+	if connectTimeout <= 0 {
+		connectTimeout = 10 * time.Second
+	}
 	opts := mqtt.NewClientOptions().
 		AddBroker(c.cfg.Broker).
 		SetClientID(c.cfg.ClientID).
 		SetUsername(c.cfg.Username).
 		SetPassword(c.cfg.Password).
-		SetCleanSession(false).
+		SetCleanSession(c.cfg.CleanSession).
 		SetAutoReconnect(true).
 		SetConnectRetry(true).
 		SetConnectRetryInterval(5 * time.Second).
-		SetKeepAlive(20 * time.Second).
-		SetConnectTimeout(10 * time.Second)
+		SetResumeSubs(true).
+		SetOrderMatters(false).
+		SetKeepAlive(keepAlive).
+		SetConnectTimeout(connectTimeout)

 	opts.SetDefaultPublishHandler(func(_ mqtt.Client, message mqtt.Message) {
 		c.handleMessage(ctx, message.Topic(), message.Payload())
@@ -89,18 +130,49 @@ func (c *MQTTClient) Start(ctx context.Context) error {
 		c.cfg.Logger.Warn("mqtt connection lost", "broker", c.cfg.Broker, "error", err)
 	}

-	c.client = mqtt.NewClient(opts)
-	token := c.client.Connect()
-	if token.Wait() && token.Error() != nil {
-		return token.Error()
+	tlsConfig, err := c.buildTLSConfig()
+	if err != nil {
+		return nil, err
 	}
-	go func() {
-		<-ctx.Done()
-		if c.client != nil && c.client.IsConnected() {
-			c.client.Disconnect(250)
+	if tlsConfig != nil {
+		opts.SetTLSConfig(tlsConfig)
+	}
+	return opts, nil
+}
+
+func (c *MQTTClient) buildTLSConfig() (*tls.Config, error) {
+	caPath := strings.TrimSpace(c.cfg.TLSCACertPath)
+	certPath := strings.TrimSpace(c.cfg.TLSClientCertPath)
+	keyPath := strings.TrimSpace(c.cfg.TLSClientKeyPath)
+	if caPath == "" && certPath == "" && keyPath == "" {
+		return nil, nil
+	}
+	config := &tls.Config{
+		MinVersion:         tls.VersionTLS12,
+		InsecureSkipVerify: !c.cfg.TLSHostnameVerification,
+	}
+	if caPath != "" {
+		caPEM, err := os.ReadFile(caPath)
+		if err != nil {
+			return nil, fmt.Errorf("read mqtt ca certificate: %w", err)
 		}
-	}()
-	return nil
+		roots := x509.NewCertPool()
+		if !roots.AppendCertsFromPEM(caPEM) {
+			return nil, fmt.Errorf("parse mqtt ca certificate %s", caPath)
+		}
+		config.RootCAs = roots
+	}
+	if certPath != "" || keyPath != "" {
+		if certPath == "" || keyPath == "" {
+			return nil, errors.New("mqtt client certificate and key must be configured together")
+		}
+		cert, err := tls.LoadX509KeyPair(certPath, keyPath)
+		if err != nil {
+			return nil, fmt.Errorf("load mqtt client certificate: %w", err)
+		}
+		config.Certificates = []tls.Certificate{cert}
+	}
+	return config, nil
 }

 func (c *MQTTClient) handleMessage(ctx context.Context, topic string, payload []byte) {
--- a/go/vehicle-gateway/internal/gateway/mqtt_client_test.go
+++ b/go/vehicle-gateway/internal/gateway/mqtt_client_test.go
@@ -2,8 +2,17 @@ package gateway

 import (
 	"context"
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/x509"
+	"crypto/x509/pkix"
+	"encoding/pem"
 	"log/slog"
+	"math/big"
+	"os"
+	"path/filepath"
 	"testing"
+	"time"

 	"lingniu-vehicle-ingest/go/vehicle-gateway/internal/envelope"
 )
@@ -59,3 +68,116 @@ func TestMQTTClientHandleBadPayloadPublishesOnlyRaw(t *testing.T) {
 		t.Fatalf("parse status = %q", sink.raw[0].ParseStatus)
 	}
 }
+
+func TestMQTTClientBuildOptionsLoadsTLSCertificates(t *testing.T) {
+	dir := t.TempDir()
+	caPath, certPath, keyPath := writeTestTLSMaterial(t, dir)
+	client, err := NewMQTTClient(MQTTClientConfig{
+		EndpointName:            "endpoint-a",
+		Broker:                  "ssl://mqtt.example.test:8883",
+		ClientID:                "test-client",
+		Topics:                  []string{"/ytforward/shln/+"},
+		QoS:                     1,
+		Sink:                    &recordingSink{},
+		Logger:                  slog.New(slog.NewTextHandler(testWriter{t: t}, nil)),
+		TLSCACertPath:           caPath,
+		TLSClientCertPath:       certPath,
+		TLSClientKeyPath:        keyPath,
+		TLSHostnameVerification: false,
+		CleanSession:            true,
+		KeepAlive:               20 * time.Second,
+		ConnectTimeout:          10 * time.Second,
+	})
+	if err != nil {
+		t.Fatalf("NewMQTTClient() error = %v", err)
+	}
+
+	opts, err := client.buildOptions(context.Background())
+	if err != nil {
+		t.Fatalf("buildOptions() error = %v", err)
+	}
+	if opts.TLSConfig == nil {
+		t.Fatal("TLSConfig is nil")
+	}
+	if opts.TLSConfig.RootCAs == nil {
+		t.Fatal("RootCAs is nil")
+	}
+	if len(opts.TLSConfig.Certificates) != 1 {
+		t.Fatalf("client certificates = %d, want 1", len(opts.TLSConfig.Certificates))
+	}
+	if !opts.TLSConfig.InsecureSkipVerify {
+		t.Fatal("InsecureSkipVerify should be true when hostname verification is disabled")
+	}
+	if !opts.CleanSession {
+		t.Fatal("CleanSession should be true")
+	}
+	if opts.Order {
+		t.Fatal("OrderMatters should be false so MQTT network handling is not blocked by Kafka/DB work")
+	}
+	if !opts.ResumeSubs {
+		t.Fatal("ResumeSubs should be true to avoid subscribe failures during reconnect churn")
+	}
+	if got := opts.KeepAlive; got != 20 {
+		t.Fatalf("KeepAlive = %d, want 20", got)
+	}
+	if got := opts.ConnectTimeout; got != 10*time.Second {
+		t.Fatalf("ConnectTimeout = %v, want 10s", got)
+	}
+}
+
+func writeTestTLSMaterial(t *testing.T, dir string) (string, string, string) {
+	t.Helper()
+	caKey, err := rsa.GenerateKey(rand.Reader, 2048)
+	if err != nil {
+		t.Fatalf("generate ca key: %v", err)
+	}
+	caTemplate := &x509.Certificate{
+		SerialNumber:          big.NewInt(1),
+		Subject:               pkix.Name{CommonName: "test-ca"},
+		NotBefore:             time.Now().Add(-time.Hour),
+		NotAfter:              time.Now().Add(time.Hour),
+		KeyUsage:              x509.KeyUsageCertSign | x509.KeyUsageCRLSign,
+		BasicConstraintsValid: true,
+		IsCA:                  true,
+	}
+	caDER, err := x509.CreateCertificate(rand.Reader, caTemplate, caTemplate, &caKey.PublicKey, caKey)
+	if err != nil {
+		t.Fatalf("create ca cert: %v", err)
+	}
+	clientKey, err := rsa.GenerateKey(rand.Reader, 2048)
+	if err != nil {
+		t.Fatalf("generate client key: %v", err)
+	}
+	clientTemplate := &x509.Certificate{
+		SerialNumber: big.NewInt(2),
+		Subject:      pkix.Name{CommonName: "test-client"},
+		NotBefore:    time.Now().Add(-time.Hour),
+		NotAfter:     time.Now().Add(time.Hour),
+		KeyUsage:     x509.KeyUsageDigitalSignature,
+		ExtKeyUsage:  []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth},
+	}
+	clientDER, err := x509.CreateCertificate(rand.Reader, clientTemplate, caTemplate, &clientKey.PublicKey, caKey)
+	if err != nil {
+		t.Fatalf("create client cert: %v", err)
+	}
+	caPath := filepath.Join(dir, "ca.pem")
+	certPath := filepath.Join(dir, "client.pem")
+	keyPath := filepath.Join(dir, "client-key.pem")
+	writePEM(t, caPath, "CERTIFICATE", caDER)
+	writePEM(t, certPath, "CERTIFICATE", clientDER)
+	keyDER := x509.MarshalPKCS1PrivateKey(clientKey)
+	writePEM(t, keyPath, "RSA PRIVATE KEY", keyDER)
+	return caPath, certPath, keyPath
+}
+
+func writePEM(t *testing.T, path, typ string, der []byte) {
+	t.Helper()
+	file, err := os.Create(path)
+	if err != nil {
+		t.Fatalf("create %s: %v", path, err)
+	}
+	defer file.Close()
+	if err := pem.Encode(file, &pem.Block{Type: typ, Bytes: der}); err != nil {
+		t.Fatalf("write pem %s: %v", path, err)
+	}
+}
--- a/go/vehicle-gateway/internal/gateway/tcp_server.go
+++ b/go/vehicle-gateway/internal/gateway/tcp_server.go
@@ -21,11 +21,14 @@ type FrameExtractor func([]byte) (frames [][]byte, remainder []byte, err error)

 type FrameParser func(raw []byte, receivedAtMS int64, sourceEndpoint string) (envelope.FrameEnvelope, error)

+type FrameResponder func(raw []byte, env envelope.FrameEnvelope) (response []byte, ok bool, err error)
+
 type TCPProtocol struct {
 	Protocol envelope.Protocol
 	Addr     string
 	Extract  FrameExtractor
 	Parse    FrameParser
+	Respond  FrameResponder
 }

 type TCPServer struct {
@@ -153,7 +156,7 @@ func (s *TCPServer) handleConnection(ctx context.Context, conn net.Conn) {
 			}
 			pending = remainder
 			for _, frame := range frames {
-				s.handleFrame(ctx, frame, source)
+				s.handleFrame(ctx, conn, frame, source)
 			}
 		}
 		if err != nil {
@@ -174,7 +177,7 @@ func (s *TCPServer) handleConnection(ctx context.Context, conn net.Conn) {
 	}
 }

-func (s *TCPServer) handleFrame(ctx context.Context, raw []byte, source string) {
+func (s *TCPServer) handleFrame(ctx context.Context, conn net.Conn, raw []byte, source string) {
 	receivedAtMS := time.Now().UnixMilli()
 	env, err := s.protocol.Parse(raw, receivedAtMS, source)
 	if err != nil {
@@ -213,6 +216,21 @@ func (s *TCPServer) handleFrame(ctx context.Context, raw []byte, source string)
 		s.logger.Error("publish unified failed", "protocol", s.protocol.Protocol, "event_id", env.StableEventID(), "error", err)
 		return
 	}
+	if s.protocol.Respond == nil {
+		return
+	}
+	response, ok, err := s.protocol.Respond(raw, env)
+	if err != nil {
+		s.logger.Warn("build protocol response failed", "protocol", s.protocol.Protocol, "event_id", env.StableEventID(), "error", err)
+		return
+	}
+	if !ok || len(response) == 0 {
+		return
+	}
+	_ = conn.SetWriteDeadline(time.Now().Add(5 * time.Second))
+	if _, err := conn.Write(response); err != nil {
+		s.logger.Warn("write protocol response failed", "protocol", s.protocol.Protocol, "event_id", env.StableEventID(), "error", err)
+	}
 }

 func (p TCPProtocol) String() string {
--- a/go/vehicle-gateway/internal/gateway/tcp_server_test.go
+++ b/go/vehicle-gateway/internal/gateway/tcp_server_test.go
@@ -3,6 +3,7 @@ package gateway
 import (
 	"context"
 	"encoding/hex"
+	"io"
 	"log/slog"
 	"net"
 	"testing"
@@ -73,6 +74,37 @@ func TestTCPServerPublishesBadFrameOnlyToRaw(t *testing.T) {
 	}
 }

+func TestTCPServerWritesProtocolResponseAfterPublish(t *testing.T) {
+	frame := buildGBFrame(0x07, 0xfe, "LNBSCB3D4R1234567", nil)
+	sink := &recordingSink{}
+	server := newTestServer(t, TCPProtocol{
+		Protocol: envelope.ProtocolGB32960,
+		Addr:     ":0",
+		Extract:  gb32960.ExtractFrames,
+		Parse:    gb32960.ParseFrame,
+		Respond: func(_ []byte, env envelope.FrameEnvelope) ([]byte, bool, error) {
+			if len(sink.unified) != 1 || sink.unified[0].EventID != env.EventID {
+				t.Fatalf("response built before publish: raw=%d unified=%d", len(sink.raw), len(sink.unified))
+			}
+			return []byte("ACK"), true, nil
+		},
+	}, sink)
+
+	client, done := runPipe(t, server)
+	if _, err := client.Write(frame); err != nil {
+		t.Fatalf("client.Write() error = %v", err)
+	}
+	buf := make([]byte, 3)
+	if _, err := io.ReadFull(client, buf); err != nil {
+		t.Fatalf("read response error = %v", err)
+	}
+	if string(buf) != "ACK" {
+		t.Fatalf("response = %q", string(buf))
+	}
+	_ = client.Close()
+	<-done
+}
+
 func newTestServer(t *testing.T, protocol TCPProtocol, sink *recordingSink) *TCPServer {
 	t.Helper()
 	server, err := NewTCPServer(TCPServerConfig{
--- a/go/vehicle-gateway/internal/history/query.go
+++ b/go/vehicle-gateway/internal/history/query.go
@@ -0,0 +1,908 @@
+package history
+
+import (
+	"context"
+	"database/sql"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"strconv"
+	"strings"
+	"time"
+)
+
+type Queryer interface {
+	QueryContext(context.Context, string, ...any) (*sql.Rows, error)
+}
+
+type RawFrameQuery struct {
+	Protocol     string
+	VehicleKey   string
+	VIN          string
+	Phone        string
+	DeviceID     string
+	MessageID    string
+	OrderBy      string
+	IncludeTotal bool
+	DateFrom     string
+	DateTo       string
+	Limit        int
+	Offset       int
+}
+
+type RawFrameRow struct {
+	TS             string `json:"ts"`
+	FrameID        string `json:"frame_id"`
+	EventID        string `json:"event_id"`
+	MessageID      int64  `json:"message_id"`
+	MessageIDHex   string `json:"message_id_hex"`
+	EventTime      string `json:"event_time"`
+	ReceivedAt     string `json:"received_at"`
+	RawSizeBytes   int64  `json:"raw_size_bytes"`
+	RawHex         string `json:"raw_hex,omitempty"`
+	RawText        string `json:"raw_text,omitempty"`
+	ParsedJSON     string `json:"parsed_json,omitempty"`
+	FieldsJSON     string `json:"fields_json,omitempty"`
+	ParseStatus    string `json:"parse_status"`
+	ParseError     string `json:"parse_error,omitempty"`
+	SourceEndpoint string `json:"source_endpoint"`
+	Protocol       string `json:"protocol"`
+	VehicleKey     string `json:"vehicle_key"`
+	VIN            string `json:"vin"`
+	Phone          string `json:"phone,omitempty"`
+	DeviceID       string `json:"device_id,omitempty"`
+}
+
+type LocationQuery struct {
+	Protocol   string
+	VehicleKey string
+	VIN        string
+	Phone      string
+	DeviceID   string
+	DateFrom   string
+	DateTo     string
+	Limit      int
+	Offset     int
+}
+
+type LocationRow struct {
+	TS             string   `json:"ts"`
+	EventID        string   `json:"event_id"`
+	FrameID        string   `json:"frame_id"`
+	ReceivedAt     string   `json:"received_at"`
+	Longitude      float64  `json:"longitude"`
+	Latitude       float64  `json:"latitude"`
+	AltitudeM      *float64 `json:"altitude_m,omitempty"`
+	SpeedKMH       *float64 `json:"speed_kmh,omitempty"`
+	DirectionDeg   *int64   `json:"direction_deg,omitempty"`
+	AlarmFlag      *int64   `json:"alarm_flag,omitempty"`
+	StatusFlag     *int64   `json:"status_flag,omitempty"`
+	TotalMileageKM *float64 `json:"total_mileage_km,omitempty"`
+	Protocol       string   `json:"protocol"`
+	VehicleKey     string   `json:"vehicle_key"`
+	VIN            string   `json:"vin"`
+	Phone          string   `json:"phone,omitempty"`
+	DeviceID       string   `json:"device_id,omitempty"`
+}
+
+type MileagePointQuery struct {
+	Protocol   string
+	VehicleKey string
+	VIN        string
+	Phone      string
+	DeviceID   string
+	DateFrom   string
+	DateTo     string
+	Limit      int
+	Offset     int
+}
+
+type MileagePointRow struct {
+	TS             string   `json:"ts"`
+	EventID        string   `json:"event_id"`
+	FrameID        string   `json:"frame_id"`
+	ReceivedAt     string   `json:"received_at"`
+	TotalMileageKM float64  `json:"total_mileage_km"`
+	SpeedKMH       *float64 `json:"speed_kmh,omitempty"`
+	Longitude      *float64 `json:"longitude,omitempty"`
+	Latitude       *float64 `json:"latitude,omitempty"`
+	Protocol       string   `json:"protocol"`
+	VehicleKey     string   `json:"vehicle_key"`
+	VIN            string   `json:"vin"`
+	Phone          string   `json:"phone,omitempty"`
+	DeviceID       string   `json:"device_id,omitempty"`
+}
+
+type RawFrameRepository struct {
+	db       Queryer
+	database string
+}
+
+func NewRawFrameRepository(db Queryer, database string) *RawFrameRepository {
+	if db == nil {
+		panic("raw frame query db must not be nil")
+	}
+	database = strings.TrimSpace(database)
+	if database != "" && !safeIdentifier(database) {
+		database = ""
+	}
+	return &RawFrameRepository{db: db, database: database}
+}
+
+type LocationRepository struct {
+	db       Queryer
+	database string
+}
+
+type MileagePointRepository struct {
+	db       Queryer
+	database string
+}
+
+func NewLocationRepository(db Queryer, database string) *LocationRepository {
+	if db == nil {
+		panic("location query db must not be nil")
+	}
+	database = strings.TrimSpace(database)
+	if database != "" && !safeIdentifier(database) {
+		database = ""
+	}
+	return &LocationRepository{db: db, database: database}
+}
+
+func NewMileagePointRepository(db Queryer, database string) *MileagePointRepository {
+	if db == nil {
+		panic("mileage point query db must not be nil")
+	}
+	database = strings.TrimSpace(database)
+	if database != "" && !safeIdentifier(database) {
+		database = ""
+	}
+	return &MileagePointRepository{db: db, database: database}
+}
+
+func (r *RawFrameRepository) Query(ctx context.Context, query RawFrameQuery) ([]RawFrameRow, error) {
+	query = normalizeRawFrameQuery(query)
+	sqlText, args := buildRawFrameSQL(r.tableName(), query)
+	rows, err := r.db.QueryContext(ctx, sqlText, args...)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	out := make([]RawFrameRow, 0)
+	for rows.Next() {
+		var row RawFrameRow
+		var ts scanDateTime
+		var eventTime scanDateTime
+		var receivedAt scanDateTime
+		if err := rows.Scan(
+			&ts,
+			&row.FrameID,
+			&row.EventID,
+			&row.MessageID,
+			&eventTime,
+			&receivedAt,
+			&row.RawSizeBytes,
+			&row.RawHex,
+			&row.RawText,
+			&row.ParsedJSON,
+			&row.FieldsJSON,
+			&row.ParseStatus,
+			&row.ParseError,
+			&row.SourceEndpoint,
+			&row.Protocol,
+			&row.VehicleKey,
+			&row.VIN,
+			&row.Phone,
+			&row.DeviceID,
+		); err != nil {
+			return nil, err
+		}
+		row.TS = ts.String
+		row.EventTime = eventTime.String
+		row.ReceivedAt = receivedAt.String
+		row.MessageIDHex = fmt.Sprintf("0x%04X", row.MessageID)
+		out = append(out, row)
+	}
+	return out, rows.Err()
+}
+
+func (r *RawFrameRepository) Count(ctx context.Context, query RawFrameQuery) (int64, error) {
+	query = normalizeRawFrameQuery(query)
+	sqlText, args := buildRawFrameCountSQL(r.tableName(), query)
+	return countRows(ctx, r.db, sqlText, args...)
+}
+
+func (r *LocationRepository) Query(ctx context.Context, query LocationQuery) ([]LocationRow, error) {
+	query = normalizeLocationQuery(query)
+	sqlText, args := buildLocationSQL(r.tableName(), query)
+	rows, err := r.db.QueryContext(ctx, sqlText, args...)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	out := make([]LocationRow, 0)
+	for rows.Next() {
+		var row LocationRow
+		var ts scanDateTime
+		var receivedAt scanDateTime
+		var altitude sql.NullFloat64
+		var speed sql.NullFloat64
+		var direction sql.NullInt64
+		var alarm sql.NullInt64
+		var status sql.NullInt64
+		var mileage sql.NullFloat64
+		if err := rows.Scan(
+			&ts,
+			&row.EventID,
+			&row.FrameID,
+			&receivedAt,
+			&row.Longitude,
+			&row.Latitude,
+			&altitude,
+			&speed,
+			&direction,
+			&alarm,
+			&status,
+			&mileage,
+			&row.Protocol,
+			&row.VehicleKey,
+			&row.VIN,
+			&row.Phone,
+			&row.DeviceID,
+		); err != nil {
+			return nil, err
+		}
+		row.TS = ts.String
+		row.ReceivedAt = receivedAt.String
+		row.AltitudeM = nullableFloat(altitude)
+		row.SpeedKMH = nullableFloat(speed)
+		row.DirectionDeg = nullableInt(direction)
+		row.AlarmFlag = nullableInt(alarm)
+		row.StatusFlag = nullableInt(status)
+		row.TotalMileageKM = nullableFloat(mileage)
+		out = append(out, row)
+	}
+	return out, rows.Err()
+}
+
+func (r *LocationRepository) Count(ctx context.Context, query LocationQuery) (int64, error) {
+	query = normalizeLocationQuery(query)
+	sqlText, args := buildLocationCountSQL(r.tableName(), query)
+	return countRows(ctx, r.db, sqlText, args...)
+}
+
+func (r *MileagePointRepository) Query(ctx context.Context, query MileagePointQuery) ([]MileagePointRow, error) {
+	query = normalizeMileagePointQuery(query)
+	sqlText, args := buildMileagePointSQL(r.tableName(), query)
+	rows, err := r.db.QueryContext(ctx, sqlText, args...)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	out := make([]MileagePointRow, 0)
+	for rows.Next() {
+		var row MileagePointRow
+		var ts scanDateTime
+		var receivedAt scanDateTime
+		var speed sql.NullFloat64
+		var longitude sql.NullFloat64
+		var latitude sql.NullFloat64
+		if err := rows.Scan(
+			&ts,
+			&row.EventID,
+			&row.FrameID,
+			&receivedAt,
+			&row.TotalMileageKM,
+			&speed,
+			&longitude,
+			&latitude,
+			&row.Protocol,
+			&row.VehicleKey,
+			&row.VIN,
+			&row.Phone,
+			&row.DeviceID,
+		); err != nil {
+			return nil, err
+		}
+		row.TS = ts.String
+		row.ReceivedAt = receivedAt.String
+		row.SpeedKMH = nullableFloat(speed)
+		row.Longitude = nullableFloat(longitude)
+		row.Latitude = nullableFloat(latitude)
+		out = append(out, row)
+	}
+	return out, rows.Err()
+}
+
+func (r *MileagePointRepository) Count(ctx context.Context, query MileagePointQuery) (int64, error) {
+	query = normalizeMileagePointQuery(query)
+	sqlText, args := buildMileagePointCountSQL(r.tableName(), query)
+	return countRows(ctx, r.db, sqlText, args...)
+}
+
+func countRows(ctx context.Context, db Queryer, sqlText string, args ...any) (int64, error) {
+	rows, err := db.QueryContext(ctx, sqlText, args...)
+	if err != nil {
+		return 0, err
+	}
+	defer rows.Close()
+	var total int64
+	if rows.Next() {
+		if err := rows.Scan(&total); err != nil {
+			return 0, err
+		}
+	}
+	return total, rows.Err()
+}
+
+func (r *RawFrameRepository) tableName() string {
+	if r.database == "" {
+		return "raw_frames"
+	}
+	return r.database + ".raw_frames"
+}
+
+func (r *LocationRepository) tableName() string {
+	if r.database == "" {
+		return "vehicle_locations"
+	}
+	return r.database + ".vehicle_locations"
+}
+
+func (r *MileagePointRepository) tableName() string {
+	if r.database == "" {
+		return "vehicle_mileage_points"
+	}
+	return r.database + ".vehicle_mileage_points"
+}
+
+func normalizeRawFrameQuery(query RawFrameQuery) RawFrameQuery {
+	query.Protocol = strings.ToUpper(strings.TrimSpace(query.Protocol))
+	query.VehicleKey = strings.TrimSpace(query.VehicleKey)
+	query.VIN = strings.TrimSpace(query.VIN)
+	query.Phone = strings.TrimSpace(query.Phone)
+	query.DeviceID = strings.TrimSpace(query.DeviceID)
+	query.MessageID = strings.TrimSpace(query.MessageID)
+	query.OrderBy = normalizeRawFrameOrderBy(query.OrderBy)
+	query.DateFrom = normalizeDateTimeLiteral(query.DateFrom)
+	query.DateTo = normalizeDateTimeLiteral(query.DateTo)
+	if query.Limit <= 0 {
+		query.Limit = 20
+	}
+	return query
+}
+
+func normalizeLocationQuery(query LocationQuery) LocationQuery {
+	query.Protocol = strings.ToUpper(strings.TrimSpace(query.Protocol))
+	query.VehicleKey = strings.TrimSpace(query.VehicleKey)
+	query.VIN = strings.TrimSpace(query.VIN)
+	query.Phone = strings.TrimSpace(query.Phone)
+	query.DeviceID = strings.TrimSpace(query.DeviceID)
+	query.DateFrom = normalizeDateTimeLiteral(query.DateFrom)
+	query.DateTo = normalizeDateTimeLiteral(query.DateTo)
+	if query.Limit <= 0 {
+		query.Limit = 20
+	}
+	return query
+}
+
+func normalizeMileagePointQuery(query MileagePointQuery) MileagePointQuery {
+	query.Protocol = strings.ToUpper(strings.TrimSpace(query.Protocol))
+	query.VehicleKey = strings.TrimSpace(query.VehicleKey)
+	query.VIN = strings.TrimSpace(query.VIN)
+	query.Phone = strings.TrimSpace(query.Phone)
+	query.DeviceID = strings.TrimSpace(query.DeviceID)
+	query.DateFrom = normalizeDateTimeLiteral(query.DateFrom)
+	query.DateTo = normalizeDateTimeLiteral(query.DateTo)
+	if query.Limit <= 0 {
+		query.Limit = 20
+	}
+	return query
+}
+
+func buildRawFrameSQL(table string, query RawFrameQuery) (string, []any) {
+	where := rawFrameWhere(query)
+	sqlText := `SELECT ts, frame_id, event_id, message_id, event_time, received_at, raw_size_bytes, raw_hex, raw_text, parsed_json, fields_json, parse_status, parse_error, source_endpoint, protocol, vehicle_key, vin, phone, device_id FROM ` + table
+	if len(where) > 0 {
+		sqlText += " WHERE " + strings.Join(where, " AND ")
+	}
+	sqlText += " ORDER BY " + rawFrameOrderColumn(query.OrderBy) + " DESC LIMIT " + strconv.Itoa(query.Limit) + " OFFSET " + strconv.Itoa(query.Offset)
+	return sqlText, nil
+}
+
+func buildRawFrameCountSQL(table string, query RawFrameQuery) (string, []any) {
+	sqlText := `SELECT COUNT(*) FROM ` + table
+	if where := rawFrameWhere(query); len(where) > 0 {
+		sqlText += " WHERE " + strings.Join(where, " AND ")
+	}
+	return sqlText, nil
+}
+
+func buildLocationSQL(table string, query LocationQuery) (string, []any) {
+	where := locationWhere(query)
+	sqlText := `SELECT ts, event_id, frame_id, received_at, longitude, latitude, altitude_m, speed_kmh, direction_deg, alarm_flag, status_flag, total_mileage_km, protocol, vehicle_key, vin, phone, device_id FROM ` + table
+	if len(where) > 0 {
+		sqlText += " WHERE " + strings.Join(where, " AND ")
+	}
+	sqlText += " ORDER BY ts DESC LIMIT " + strconv.Itoa(query.Limit) + " OFFSET " + strconv.Itoa(query.Offset)
+	return sqlText, nil
+}
+
+func buildLocationCountSQL(table string, query LocationQuery) (string, []any) {
+	sqlText := `SELECT COUNT(*) FROM ` + table
+	if where := locationWhere(query); len(where) > 0 {
+		sqlText += " WHERE " + strings.Join(where, " AND ")
+	}
+	return sqlText, nil
+}
+
+func buildMileagePointSQL(table string, query MileagePointQuery) (string, []any) {
+	where := mileagePointWhere(query)
+	sqlText := `SELECT ts, event_id, frame_id, received_at, total_mileage_km, speed_kmh, longitude, latitude, protocol, vehicle_key, vin, phone, device_id FROM ` + table
+	if len(where) > 0 {
+		sqlText += " WHERE " + strings.Join(where, " AND ")
+	}
+	sqlText += " ORDER BY ts DESC LIMIT " + strconv.Itoa(query.Limit) + " OFFSET " + strconv.Itoa(query.Offset)
+	return sqlText, nil
+}
+
+func buildMileagePointCountSQL(table string, query MileagePointQuery) (string, []any) {
+	sqlText := `SELECT COUNT(*) FROM ` + table
+	if where := mileagePointWhere(query); len(where) > 0 {
+		sqlText += " WHERE " + strings.Join(where, " AND ")
+	}
+	return sqlText, nil
+}
+
+func rawFrameWhere(query RawFrameQuery) []string {
+	var where []string
+	add := func(clause string) {
+		where = append(where, clause)
+	}
+	if query.Protocol != "" {
+		add("protocol = '" + quote(query.Protocol) + "'")
+	}
+	if query.VehicleKey != "" {
+		add("vehicle_key = '" + quote(query.VehicleKey) + "'")
+	}
+	if query.VIN != "" {
+		add("vin = '" + quote(query.VIN) + "'")
+	}
+	if query.Phone != "" {
+		add("phone = '" + quote(query.Phone) + "'")
+	}
+	if query.DeviceID != "" {
+		add("device_id = '" + quote(query.DeviceID) + "'")
+	}
+	if query.MessageID != "" {
+		if parsed, ok := parseMessageID(query.MessageID); ok {
+			add("message_id = " + strconv.FormatInt(parsed, 10))
+		}
+	}
+	if query.DateFrom != "" {
+		add("ts >= '" + quote(normalizeDateTimeLiteral(query.DateFrom)) + "'")
+	}
+	if query.DateTo != "" {
+		add("ts <= '" + quote(normalizeDateTimeLiteral(query.DateTo)) + "'")
+	}
+	return where
+}
+
+func normalizeRawFrameOrderBy(value string) string {
+	value = strings.ToLower(strings.TrimSpace(value))
+	switch value {
+	case "receivedat", "received_at":
+		return "receivedAt"
+	default:
+		return "ts"
+	}
+}
+
+func rawFrameOrderColumn(value string) string {
+	if normalizeRawFrameOrderBy(value) == "receivedAt" {
+		return "received_at"
+	}
+	return "ts"
+}
+
+func locationWhere(query LocationQuery) []string {
+	var where []string
+	add := func(clause string) {
+		where = append(where, clause)
+	}
+	if query.Protocol != "" {
+		add("protocol = '" + quote(query.Protocol) + "'")
+	}
+	if query.VehicleKey != "" {
+		add("vehicle_key = '" + quote(query.VehicleKey) + "'")
+	}
+	if query.VIN != "" {
+		add("vin = '" + quote(query.VIN) + "'")
+	}
+	if query.Phone != "" {
+		add("phone = '" + quote(query.Phone) + "'")
+	}
+	if query.DeviceID != "" {
+		add("device_id = '" + quote(query.DeviceID) + "'")
+	}
+	if query.DateFrom != "" {
+		add("ts >= '" + quote(normalizeDateTimeLiteral(query.DateFrom)) + "'")
+	}
+	if query.DateTo != "" {
+		add("ts <= '" + quote(normalizeDateTimeLiteral(query.DateTo)) + "'")
+	}
+	return where
+}
+
+func mileagePointWhere(query MileagePointQuery) []string {
+	var where []string
+	add := func(clause string) {
+		where = append(where, clause)
+	}
+	if query.Protocol != "" {
+		add("protocol = '" + quote(query.Protocol) + "'")
+	}
+	if query.VehicleKey != "" {
+		add("vehicle_key = '" + quote(query.VehicleKey) + "'")
+	}
+	if query.VIN != "" {
+		add("vin = '" + quote(query.VIN) + "'")
+	}
+	if query.Phone != "" {
+		add("phone = '" + quote(query.Phone) + "'")
+	}
+	if query.DeviceID != "" {
+		add("device_id = '" + quote(query.DeviceID) + "'")
+	}
+	if query.DateFrom != "" {
+		add("ts >= '" + quote(normalizeDateTimeLiteral(query.DateFrom)) + "'")
+	}
+	if query.DateTo != "" {
+		add("ts <= '" + quote(normalizeDateTimeLiteral(query.DateTo)) + "'")
+	}
+	return where
+}
+
+type RawFrameHandler struct {
+	repository *RawFrameRepository
+}
+
+type LocationHandler struct {
+	repository *LocationRepository
+}
+
+type MileagePointHandler struct {
+	repository *MileagePointRepository
+}
+
+func NewRawFrameHandler(repository *RawFrameRepository) *RawFrameHandler {
+	if repository == nil {
+		panic("raw frame repository must not be nil")
+	}
+	return &RawFrameHandler{repository: repository}
+}
+
+func NewLocationHandler(repository *LocationRepository) *LocationHandler {
+	if repository == nil {
+		panic("location repository must not be nil")
+	}
+	return &LocationHandler{repository: repository}
+}
+
+func NewMileagePointHandler(repository *MileagePointRepository) *MileagePointHandler {
+	if repository == nil {
+		panic("mileage point repository must not be nil")
+	}
+	return &MileagePointHandler{repository: repository}
+}
+
+func (h *RawFrameHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		writeHistoryError(w, http.StatusMethodNotAllowed, "method not allowed")
+		return
+	}
+	if strings.Trim(r.URL.Path, "/") != "api/history/raw-frames" {
+		writeHistoryError(w, http.StatusNotFound, "route not found")
+		return
+	}
+	query, err := parseRawFrameQuery(r)
+	if err != nil {
+		writeHistoryError(w, http.StatusBadRequest, err.Error())
+		return
+	}
+	var total int64
+	if query.IncludeTotal {
+		total, err = h.repository.Count(r.Context(), query)
+		if err != nil {
+			writeHistoryError(w, http.StatusInternalServerError, err.Error())
+			return
+		}
+	}
+	rows, err := h.repository.Query(r.Context(), query)
+	if err != nil {
+		writeHistoryError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+	if !query.IncludeTotal {
+		total = int64(len(rows))
+	}
+	w.Header().Set("Content-Type", "application/json")
+	_ = json.NewEncoder(w).Encode(map[string]any{
+		"items":  rows,
+		"total":  total,
+		"limit":  query.Limit,
+		"offset": query.Offset,
+	})
+}
+
+func (h *LocationHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		writeHistoryError(w, http.StatusMethodNotAllowed, "method not allowed")
+		return
+	}
+	if strings.Trim(r.URL.Path, "/") != "api/history/locations" {
+		writeHistoryError(w, http.StatusNotFound, "route not found")
+		return
+	}
+	query, err := parseLocationQuery(r)
+	if err != nil {
+		writeHistoryError(w, http.StatusBadRequest, err.Error())
+		return
+	}
+	total, err := h.repository.Count(r.Context(), query)
+	if err != nil {
+		writeHistoryError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+	rows, err := h.repository.Query(r.Context(), query)
+	if err != nil {
+		writeHistoryError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+	w.Header().Set("Content-Type", "application/json")
+	_ = json.NewEncoder(w).Encode(map[string]any{
+		"items":  rows,
+		"total":  total,
+		"limit":  query.Limit,
+		"offset": query.Offset,
+	})
+}
+
+func (h *MileagePointHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		writeHistoryError(w, http.StatusMethodNotAllowed, "method not allowed")
+		return
+	}
+	if strings.Trim(r.URL.Path, "/") != "api/history/mileage-points" {
+		writeHistoryError(w, http.StatusNotFound, "route not found")
+		return
+	}
+	query, err := parseMileagePointQuery(r)
+	if err != nil {
+		writeHistoryError(w, http.StatusBadRequest, err.Error())
+		return
+	}
+	total, err := h.repository.Count(r.Context(), query)
+	if err != nil {
+		writeHistoryError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+	rows, err := h.repository.Query(r.Context(), query)
+	if err != nil {
+		writeHistoryError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+	w.Header().Set("Content-Type", "application/json")
+	_ = json.NewEncoder(w).Encode(map[string]any{
+		"items":  rows,
+		"total":  total,
+		"limit":  query.Limit,
+		"offset": query.Offset,
+	})
+}
+
+func parseRawFrameQuery(r *http.Request) (RawFrameQuery, error) {
+	values := r.URL.Query()
+	limit, err := parseBoundedInt(values.Get("limit"), 20, 1, 500, "limit")
+	if err != nil {
+		return RawFrameQuery{}, err
+	}
+	offset, err := parseBoundedInt(values.Get("offset"), 0, 0, 1_000_000, "offset")
+	if err != nil {
+		return RawFrameQuery{}, err
+	}
+	query := RawFrameQuery{
+		Protocol:     values.Get("protocol"),
+		VehicleKey:   values.Get("vehicleKey"),
+		VIN:          values.Get("vin"),
+		Phone:        values.Get("phone"),
+		DeviceID:     values.Get("deviceId"),
+		MessageID:    values.Get("messageId"),
+		OrderBy:      values.Get("orderBy"),
+		IncludeTotal: values.Get("includeTotal") != "false",
+		DateFrom:     values.Get("dateFrom"),
+		DateTo:       values.Get("dateTo"),
+		Limit:        limit,
+		Offset:       offset,
+	}
+	if !validDateTime(query.DateFrom) || !validDateTime(query.DateTo) {
+		return RawFrameQuery{}, errors.New("dateFrom/dateTo must use YYYY-MM-DD or YYYY-MM-DD HH:mm:ss")
+	}
+	if strings.TrimSpace(query.MessageID) != "" {
+		if _, ok := parseMessageID(query.MessageID); !ok {
+			return RawFrameQuery{}, errors.New("messageId must be decimal or hex like 0x0200")
+		}
+	}
+	return normalizeRawFrameQuery(query), nil
+}
+
+func parseMileagePointQuery(r *http.Request) (MileagePointQuery, error) {
+	values := r.URL.Query()
+	limit, err := parseBoundedInt(values.Get("limit"), 20, 1, 500, "limit")
+	if err != nil {
+		return MileagePointQuery{}, err
+	}
+	offset, err := parseBoundedInt(values.Get("offset"), 0, 0, 1_000_000, "offset")
+	if err != nil {
+		return MileagePointQuery{}, err
+	}
+	query := MileagePointQuery{
+		Protocol:   values.Get("protocol"),
+		VehicleKey: values.Get("vehicleKey"),
+		VIN:        values.Get("vin"),
+		Phone:      values.Get("phone"),
+		DeviceID:   values.Get("deviceId"),
+		DateFrom:   values.Get("dateFrom"),
+		DateTo:     values.Get("dateTo"),
+		Limit:      limit,
+		Offset:     offset,
+	}
+	if !validDateTime(query.DateFrom) || !validDateTime(query.DateTo) {
+		return MileagePointQuery{}, errors.New("dateFrom/dateTo must use YYYY-MM-DD or YYYY-MM-DD HH:mm:ss")
+	}
+	return normalizeMileagePointQuery(query), nil
+}
+
+func parseLocationQuery(r *http.Request) (LocationQuery, error) {
+	values := r.URL.Query()
+	limit, err := parseBoundedInt(values.Get("limit"), 20, 1, 500, "limit")
+	if err != nil {
+		return LocationQuery{}, err
+	}
+	offset, err := parseBoundedInt(values.Get("offset"), 0, 0, 1_000_000, "offset")
+	if err != nil {
+		return LocationQuery{}, err
+	}
+	query := LocationQuery{
+		Protocol:   values.Get("protocol"),
+		VehicleKey: values.Get("vehicleKey"),
+		VIN:        values.Get("vin"),
+		Phone:      values.Get("phone"),
+		DeviceID:   values.Get("deviceId"),
+		DateFrom:   values.Get("dateFrom"),
+		DateTo:     values.Get("dateTo"),
+		Limit:      limit,
+		Offset:     offset,
+	}
+	if !validDateTime(query.DateFrom) || !validDateTime(query.DateTo) {
+		return LocationQuery{}, errors.New("dateFrom/dateTo must use YYYY-MM-DD or YYYY-MM-DD HH:mm:ss")
+	}
+	return normalizeLocationQuery(query), nil
+}
+
+func parseBoundedInt(raw string, fallback int, min int, max int, name string) (int, error) {
+	raw = strings.TrimSpace(raw)
+	if raw == "" {
+		return fallback, nil
+	}
+	value, err := strconv.Atoi(raw)
+	if err != nil || value < min || value > max {
+		return 0, fmt.Errorf("%s must be between %d and %d", name, min, max)
+	}
+	return value, nil
+}
+
+func parseMessageID(value string) (int64, bool) {
+	value = strings.TrimSpace(strings.ToLower(value))
+	if value == "" {
+		return 0, false
+	}
+	if strings.HasPrefix(value, "0x") {
+		parsed, err := strconv.ParseInt(strings.TrimPrefix(value, "0x"), 16, 32)
+		return parsed, err == nil
+	}
+	parsed, err := strconv.ParseInt(value, 10, 32)
+	return parsed, err == nil
+}
+
+func validDateTime(value string) bool {
+	value = normalizeDateTimeLiteral(value)
+	if value == "" {
+		return true
+	}
+	for _, layout := range []string{"2006-01-02", "2006-01-02 15:04:05", time.RFC3339} {
+		if _, err := time.Parse(layout, value); err == nil {
+			return true
+		}
+	}
+	return false
+}
+
+func normalizeDateTimeLiteral(value string) string {
+	value = strings.TrimSpace(value)
+	if value == "" {
+		return ""
+	}
+	shanghai := time.FixedZone("Asia/Shanghai", 8*3600)
+	for _, layout := range []string{"2006-01-02T15:04:05", "2006-01-02 15:04:05"} {
+		if parsed, err := time.ParseInLocation(layout, value, shanghai); err == nil {
+			return parsed.UTC().Format("2006-01-02 15:04:05")
+		}
+	}
+	if parsed, err := time.Parse(time.RFC3339, value); err == nil {
+		return parsed.UTC().Format("2006-01-02 15:04:05")
+	}
+	return value
+}
+
+func safeIdentifier(value string) bool {
+	if value == "" {
+		return false
+	}
+	for _, r := range value {
+		if (r >= 'a' && r <= 'z') || (r >= 'A' && r <= 'Z') || (r >= '0' && r <= '9') || r == '_' {
+			continue
+		}
+		return false
+	}
+	return true
+}
+
+type scanDateTime struct {
+	String string
+}
+
+func (s *scanDateTime) Scan(value any) error {
+	s.String = formatSQLTime(value, "2006-01-02 15:04:05")
+	return nil
+}
+
+func formatSQLTime(value any, layout string) string {
+	switch typed := value.(type) {
+	case nil:
+		return ""
+	case time.Time:
+		return typed.Format(layout)
+	case []byte:
+		return strings.TrimSpace(string(typed))
+	case string:
+		return strings.TrimSpace(typed)
+	default:
+		return strings.TrimSpace(fmt.Sprint(typed))
+	}
+}
+
+func nullableFloat(value sql.NullFloat64) *float64 {
+	if !value.Valid {
+		return nil
+	}
+	return &value.Float64
+}
+
+func nullableInt(value sql.NullInt64) *int64 {
+	if !value.Valid {
+		return nil
+	}
+	return &value.Int64
+}
+
+func writeHistoryError(w http.ResponseWriter, status int, message string) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(status)
+	_ = json.NewEncoder(w).Encode(map[string]any{"error": message})
+}
--- a/go/vehicle-gateway/internal/history/query_test.go
+++ b/go/vehicle-gateway/internal/history/query_test.go
@@ -0,0 +1,423 @@
+package history
+
+import (
+	"context"
+	"database/sql"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/DATA-DOG/go-sqlmock"
+)
+
+func TestRawFrameRepositoryQueriesRawFramesWithFilters(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("sqlmock.New() error = %v", err)
+	}
+	defer db.Close()
+	mock.ExpectQuery("SELECT ts, frame_id, event_id, message_id, event_time, received_at, raw_size_bytes, raw_hex, raw_text, parsed_json, fields_json, parse_status, parse_error, source_endpoint, protocol, vehicle_key, vin, phone, device_id FROM lingniu_vehicle_ts.raw_frames").
+		WillReturnRows(sqlmock.NewRows([]string{
+			"ts", "frame_id", "event_id", "message_id", "event_time", "received_at", "raw_size_bytes",
+			"raw_hex", "raw_text", "parsed_json", "fields_json", "parse_status", "parse_error", "source_endpoint",
+			"protocol", "vehicle_key", "vin", "phone", "device_id",
+		}).AddRow(
+			time.Date(2026, 7, 1, 23, 25, 36, 0, time.FixedZone("Asia/Shanghai", 8*3600)),
+			"go_frame", "event-1", 0x0200,
+			time.Date(2026, 7, 1, 23, 25, 36, 0, time.FixedZone("Asia/Shanghai", 8*3600)),
+			time.Date(2026, 7, 1, 23, 25, 37, 0, time.FixedZone("Asia/Shanghai", 8*3600)),
+			64, "7E0200", "", `{"header":{"message_id":"0x0200"}}`, `{"speed_kmh":0}`,
+			"OK", "", "222.66.200.68:29646", "JT808", "013079963379", "LKLG7C4E3NA774736", "013079963379", "9963379",
+		))
+
+	repository := NewRawFrameRepository(db, "lingniu_vehicle_ts")
+	rows, err := repository.Query(context.Background(), RawFrameQuery{
+		Protocol: "JT808",
+		VIN:      "LKLG7C4E3NA774736",
+		DateFrom: "2026-07-01 00:00:00",
+		DateTo:   "2026-07-01 23:59:59",
+		Limit:    20,
+	})
+	if err != nil {
+		t.Fatalf("Query() error = %v", err)
+	}
+	if len(rows) != 1 {
+		t.Fatalf("row count = %d", len(rows))
+	}
+	if rows[0].MessageID != 512 || rows[0].MessageIDHex != "0x0200" || rows[0].ParsedJSON == "" {
+		t.Fatalf("unexpected row: %#v", rows[0])
+	}
+	if rows[0].TS != "2026-07-01 23:25:36" {
+		t.Fatalf("timestamp = %q", rows[0].TS)
+	}
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Fatalf("sql expectations: %v", err)
+	}
+}
+
+func TestRawFrameHandlerReturnsRawFrames(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("sqlmock.New() error = %v", err)
+	}
+	defer db.Close()
+	mock.ExpectQuery("SELECT COUNT\\(\\*\\) FROM lingniu_vehicle_ts.raw_frames").
+		WillReturnRows(sqlmock.NewRows([]string{"total"}).AddRow(38))
+	mock.ExpectQuery("SELECT ts, frame_id, event_id, message_id, event_time, received_at, raw_size_bytes, raw_hex, raw_text, parsed_json, fields_json, parse_status, parse_error, source_endpoint, protocol, vehicle_key, vin, phone, device_id FROM lingniu_vehicle_ts.raw_frames").
+		WillReturnRows(sqlmock.NewRows([]string{
+			"ts", "frame_id", "event_id", "message_id", "event_time", "received_at", "raw_size_bytes",
+			"raw_hex", "raw_text", "parsed_json", "fields_json", "parse_status", "parse_error", "source_endpoint",
+			"protocol", "vehicle_key", "vin", "phone", "device_id",
+		}).AddRow(
+			"2026-07-01 22:28:25", "go_frame", "event-2", 2, "2026-07-01 22:28:25", "2026-07-01 22:28:25",
+			128, "2323", "", `{"command":"REALTIME"}`, `{"total_mileage_km":53490.9}`,
+			"OK", "", "8.134.95.166:53702", "GB32960", "LB9A32A21R0LS1707", "LB9A32A21R0LS1707", "", "",
+		))
+
+	handler := NewRawFrameHandler(NewRawFrameRepository(db, "lingniu_vehicle_ts"))
+	request := httptest.NewRequest(http.MethodGet, "/api/history/raw-frames?protocol=GB32960&vin=LB9A32A21R0LS1707&limit=5", nil)
+	response := httptest.NewRecorder()
+
+	handler.ServeHTTP(response, request)
+
+	if response.Code != http.StatusOK {
+		t.Fatalf("status = %d body=%s", response.Code, response.Body.String())
+	}
+	body := response.Body.String()
+	for _, want := range []string{`"vin":"LB9A32A21R0LS1707"`, `"message_id_hex":"0x0002"`, `"total":38`} {
+		if !strings.Contains(body, want) {
+			t.Fatalf("response missing %s: %s", want, body)
+		}
+	}
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Fatalf("sql expectations: %v", err)
+	}
+}
+
+func TestRawFrameHandlerFiltersByVehicleKey(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("sqlmock.New() error = %v", err)
+	}
+	defer db.Close()
+	mock.ExpectQuery("SELECT COUNT\\(\\*\\) FROM lingniu_vehicle_ts.raw_frames").
+		WillReturnRows(sqlmock.NewRows([]string{"total"}).AddRow(11))
+	mock.ExpectQuery("vehicle_key = 'JT808:013307811350'").
+		WillReturnRows(sqlmock.NewRows([]string{
+			"ts", "frame_id", "event_id", "message_id", "event_time", "received_at", "raw_size_bytes",
+			"raw_hex", "raw_text", "parsed_json", "fields_json", "parse_status", "parse_error", "source_endpoint",
+			"protocol", "vehicle_key", "vin", "phone", "device_id",
+		}).AddRow(
+			"2026-07-02 00:18:22", "go_frame", "event-3", 0x0200, "2026-07-02 00:18:22", "2026-07-02 00:22:43",
+			63, "7E0200", "", `{"header":{"message_id":"0x0200"}}`, `{"total_mileage_km":8792.8}`,
+			"OK", "", "115.231.168.135:22170", "JT808", "JT808:013307811350", "", "013307811350", "",
+		))
+
+	handler := NewRawFrameHandler(NewRawFrameRepository(db, "lingniu_vehicle_ts"))
+	request := httptest.NewRequest(http.MethodGet, "/api/history/raw-frames?vehicleKey=JT808:013307811350&protocol=JT808&limit=1", nil)
+	response := httptest.NewRecorder()
+
+	handler.ServeHTTP(response, request)
+
+	if response.Code != http.StatusOK {
+		t.Fatalf("status = %d body=%s", response.Code, response.Body.String())
+	}
+	body := response.Body.String()
+	for _, want := range []string{`"vehicle_key":"JT808:013307811350"`, `"phone":"013307811350"`, `"total":11`} {
+		if !strings.Contains(body, want) {
+			t.Fatalf("response missing %s: %s", want, body)
+		}
+	}
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Fatalf("sql expectations: %v", err)
+	}
+}
+
+func TestRawFrameHandlerCanSkipTotalCountForFreshnessProbe(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("sqlmock.New() error = %v", err)
+	}
+	defer db.Close()
+	mock.ExpectQuery("ORDER BY received_at DESC LIMIT 1 OFFSET 0").
+		WillReturnRows(sqlmock.NewRows([]string{
+			"ts", "frame_id", "event_id", "message_id", "event_time", "received_at", "raw_size_bytes",
+			"raw_hex", "raw_text", "parsed_json", "fields_json", "parse_status", "parse_error", "source_endpoint",
+			"protocol", "vehicle_key", "vin", "phone", "device_id",
+		}).AddRow(
+			"2026-07-02 01:26:48", "go_frame", "event-4", 0x0200, "2026-07-02 01:20:46", "2026-07-02 01:26:48",
+			63, "7E0200", "", `{"header":{"message_id":"0x0200"}}`, `{"speed_kmh":0}`,
+			"OK", "", "115.231.168.135:22170", "JT808", "JT808:013307811254", "", "013307811254", "",
+		))
+
+	handler := NewRawFrameHandler(NewRawFrameRepository(db, "lingniu_vehicle_ts"))
+	request := httptest.NewRequest(http.MethodGet, "/api/history/raw-frames?protocol=JT808&orderBy=receivedAt&includeTotal=false&limit=1", nil)
+	response := httptest.NewRecorder()
+
+	handler.ServeHTTP(response, request)
+
+	if response.Code != http.StatusOK {
+		t.Fatalf("status = %d body=%s", response.Code, response.Body.String())
+	}
+	body := response.Body.String()
+	for _, want := range []string{`"total":1`, `"received_at":"2026-07-02 01:26:48"`} {
+		if !strings.Contains(body, want) {
+			t.Fatalf("response missing %s: %s", want, body)
+		}
+	}
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Fatalf("sql expectations: %v", err)
+	}
+}
+
+func TestRawFrameHandlerReturnsEmptyItemsArrayWhenNoRows(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("sqlmock.New() error = %v", err)
+	}
+	defer db.Close()
+	mock.ExpectQuery("SELECT COUNT\\(\\*\\) FROM lingniu_vehicle_ts.raw_frames").
+		WillReturnRows(sqlmock.NewRows([]string{"total"}).AddRow(0))
+	mock.ExpectQuery("SELECT ts, frame_id, event_id, message_id, event_time, received_at, raw_size_bytes, raw_hex, raw_text, parsed_json, fields_json, parse_status, parse_error, source_endpoint, protocol, vehicle_key, vin, phone, device_id FROM lingniu_vehicle_ts.raw_frames").
+		WillReturnRows(sqlmock.NewRows([]string{
+			"ts", "frame_id", "event_id", "message_id", "event_time", "received_at", "raw_size_bytes",
+			"raw_hex", "raw_text", "parsed_json", "fields_json", "parse_status", "parse_error", "source_endpoint",
+			"protocol", "vehicle_key", "vin", "phone", "device_id",
+		}))
+
+	handler := NewRawFrameHandler(NewRawFrameRepository(db, "lingniu_vehicle_ts"))
+	request := httptest.NewRequest(http.MethodGet, "/api/history/raw-frames?protocol=NOT_EXISTS&limit=1", nil)
+	response := httptest.NewRecorder()
+
+	handler.ServeHTTP(response, request)
+
+	if response.Code != http.StatusOK {
+		t.Fatalf("status = %d body=%s", response.Code, response.Body.String())
+	}
+	body := response.Body.String()
+	if !strings.Contains(body, `"items":[]`) || strings.Contains(body, `"items":null`) {
+		t.Fatalf("expected empty items array, got: %s", body)
+	}
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Fatalf("sql expectations: %v", err)
+	}
+}
+
+func TestLocationHandlerReturnsLocationsByVehicleKey(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("sqlmock.New() error = %v", err)
+	}
+	defer db.Close()
+	mock.ExpectQuery("SELECT COUNT\\(\\*\\) FROM lingniu_vehicle_ts.vehicle_locations").
+		WillReturnRows(sqlmock.NewRows([]string{"total"}).AddRow(17))
+	mock.ExpectQuery("vehicle_key = 'JT808:013307811350'").
+		WillReturnRows(sqlmock.NewRows([]string{
+			"ts", "event_id", "frame_id", "received_at", "longitude", "latitude", "altitude_m", "speed_kmh",
+			"direction_deg", "alarm_flag", "status_flag", "total_mileage_km", "protocol", "vehicle_key", "vin", "phone", "device_id",
+		}).AddRow(
+			"2026-07-02 00:18:22", "event-3", "go_frame", "2026-07-02 00:22:43",
+			121.07764, 30.585928, 11.0, 8.0, 171, 0, 4718595, 8792.8,
+			"JT808", "JT808:013307811350", "", "013307811350", "",
+		))
+
+	handler := NewLocationHandler(NewLocationRepository(db, "lingniu_vehicle_ts"))
+	request := httptest.NewRequest(http.MethodGet, "/api/history/locations?vehicleKey=JT808:013307811350&protocol=JT808&limit=1", nil)
+	response := httptest.NewRecorder()
+
+	handler.ServeHTTP(response, request)
+
+	if response.Code != http.StatusOK {
+		t.Fatalf("status = %d body=%s", response.Code, response.Body.String())
+	}
+	body := response.Body.String()
+	for _, want := range []string{`"vehicle_key":"JT808:013307811350"`, `"longitude":121.07764`, `"total_mileage_km":8792.8`, `"total":17`} {
+		if !strings.Contains(body, want) {
+			t.Fatalf("response missing %s: %s", want, body)
+		}
+	}
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Fatalf("sql expectations: %v", err)
+	}
+}
+
+func TestMileagePointHandlerReturnsMileageByVehicleKey(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("sqlmock.New() error = %v", err)
+	}
+	defer db.Close()
+	mock.ExpectQuery("SELECT COUNT\\(\\*\\) FROM lingniu_vehicle_ts.vehicle_mileage_points").
+		WillReturnRows(sqlmock.NewRows([]string{"total"}).AddRow(19))
+	mock.ExpectQuery("vehicle_key = 'JT808:013307811350'").
+		WillReturnRows(sqlmock.NewRows([]string{
+			"ts", "event_id", "frame_id", "received_at", "total_mileage_km", "speed_kmh", "longitude", "latitude",
+			"protocol", "vehicle_key", "vin", "phone", "device_id",
+		}).AddRow(
+			"2026-07-02 00:18:22", "event-3", "go_frame", "2026-07-02 00:22:43",
+			8792.8, 8.0, 121.07764, 30.585928,
+			"JT808", "JT808:013307811350", "", "013307811350", "",
+		))
+
+	handler := NewMileagePointHandler(NewMileagePointRepository(db, "lingniu_vehicle_ts"))
+	request := httptest.NewRequest(http.MethodGet, "/api/history/mileage-points?vehicleKey=JT808:013307811350&protocol=JT808&limit=1", nil)
+	response := httptest.NewRecorder()
+
+	handler.ServeHTTP(response, request)
+
+	if response.Code != http.StatusOK {
+		t.Fatalf("status = %d body=%s", response.Code, response.Body.String())
+	}
+	body := response.Body.String()
+	for _, want := range []string{`"vehicle_key":"JT808:013307811350"`, `"total_mileage_km":8792.8`, `"speed_kmh":8`, `"total":19`} {
+		if !strings.Contains(body, want) {
+			t.Fatalf("response missing %s: %s", want, body)
+		}
+	}
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Fatalf("sql expectations: %v", err)
+	}
+}
+
+func TestRawFrameHandlerRejectsInvalidLimit(t *testing.T) {
+	handler := NewRawFrameHandler(NewRawFrameRepository(&sql.DB{}, ""))
+	request := httptest.NewRequest(http.MethodGet, "/api/history/raw-frames?limit=501", nil)
+	response := httptest.NewRecorder()
+
+	handler.ServeHTTP(response, request)
+
+	if response.Code != http.StatusBadRequest {
+		t.Fatalf("status = %d body=%s", response.Code, response.Body.String())
+	}
+}
+
+func TestParseRawFrameQueryAcceptsDatetimeLocalValues(t *testing.T) {
+	request := httptest.NewRequest(http.MethodGet, "/api/history/raw-frames?dateFrom=2026-07-01T00:00:00&dateTo=2026-07-02T00:00:00", nil)
+
+	query, err := parseRawFrameQuery(request)
+	if err != nil {
+		t.Fatalf("parseRawFrameQuery() error = %v", err)
+	}
+	if query.DateFrom != "2026-06-30 16:00:00" || query.DateTo != "2026-07-01 16:00:00" {
+		t.Fatalf("date range = %q -> %q", query.DateFrom, query.DateTo)
+	}
+}
+
+func TestNormalizeDateTimeLiteralConvertsInputToTDengineUTCTime(t *testing.T) {
+	for raw, want := range map[string]string{
+		"2026-07-01T00:00:00":       "2026-06-30 16:00:00",
+		"2026-07-01 00:00:00":       "2026-06-30 16:00:00",
+		"2026-07-01T00:00:00+08:00": "2026-06-30 16:00:00",
+		"2026-06-30T16:00:00Z":      "2026-06-30 16:00:00",
+	} {
+		if got := normalizeDateTimeLiteral(raw); got != want {
+			t.Fatalf("normalizeDateTimeLiteral(%q) = %q, want %q", raw, got, want)
+		}
+	}
+}
+
+func TestParseMessageIDSupportsDecimalAndHex(t *testing.T) {
+	for raw, want := range map[string]int64{
+		"512":    512,
+		"0x0200": 512,
+		"0X0100": 256,
+	} {
+		got, ok := parseMessageID(raw)
+		if !ok || got != want {
+			t.Fatalf("parseMessageID(%q) = %d,%v want %d,true", raw, got, ok, want)
+		}
+	}
+}
+
+func TestBuildMileagePointSQLUsesLiteralsForTDengine(t *testing.T) {
+	sqlText, args := buildMileagePointSQL("lingniu_vehicle_ts.vehicle_mileage_points", MileagePointQuery{
+		Protocol:   "JT808",
+		VehicleKey: "JT808:013307811350",
+		DateFrom:   "2026-07-02 00:00:00",
+		DateTo:     "2026-07-02 23:59:59",
+		Limit:      20,
+		Offset:     5,
+	})
+	if len(args) != 0 {
+		t.Fatalf("expected no query args for TDengine, got %#v", args)
+	}
+	for _, want := range []string{
+		"protocol = 'JT808'",
+		"vehicle_key = 'JT808:013307811350'",
+		"ts >= '2026-07-01 16:00:00'",
+		"LIMIT 20 OFFSET 5",
+	} {
+		if !strings.Contains(sqlText, want) {
+			t.Fatalf("sql missing %s: %s", want, sqlText)
+		}
+	}
+}
+
+func TestBuildLocationSQLUsesLiteralsForTDengine(t *testing.T) {
+	sqlText, args := buildLocationSQL("lingniu_vehicle_ts.vehicle_locations", LocationQuery{
+		Protocol:   "JT808",
+		VehicleKey: "JT808:013307811350",
+		DateFrom:   "2026-07-02 00:00:00",
+		DateTo:     "2026-07-02 23:59:59",
+		Limit:      20,
+		Offset:     5,
+	})
+	if len(args) != 0 {
+		t.Fatalf("expected no query args for TDengine, got %#v", args)
+	}
+	for _, want := range []string{
+		"protocol = 'JT808'",
+		"vehicle_key = 'JT808:013307811350'",
+		"ts >= '2026-07-01 16:00:00'",
+		"LIMIT 20 OFFSET 5",
+	} {
+		if !strings.Contains(sqlText, want) {
+			t.Fatalf("sql missing %s: %s", want, sqlText)
+		}
+	}
+}
+
+func TestBuildRawFrameSQLUsesLiteralsForTDengine(t *testing.T) {
+	sqlText, args := buildRawFrameSQL("lingniu_vehicle_ts.raw_frames", RawFrameQuery{
+		Protocol:   "JT808",
+		VehicleKey: "JT808:013307811350",
+		VIN:        "VIN'1",
+		MessageID:  "0x0200",
+		DateFrom:   "2026-07-01T00:00:00",
+		DateTo:     "2026-07-01T23:59:59",
+		Limit:      20,
+		Offset:     5,
+	})
+	if len(args) != 0 {
+		t.Fatalf("expected no query args for TDengine, got %#v", args)
+	}
+	for _, want := range []string{
+		"protocol = 'JT808'",
+		"vehicle_key = 'JT808:013307811350'",
+		"vin = 'VIN''1'",
+		"message_id = 512",
+		"ts >= '2026-06-30 16:00:00'",
+		"ts <= '2026-07-01 15:59:59'",
+		"LIMIT 20 OFFSET 5",
+	} {
+		if !strings.Contains(sqlText, want) {
+			t.Fatalf("sql missing %s: %s", want, sqlText)
+		}
+	}
+}
+
+func TestBuildRawFrameSQLCanOrderByReceivedAt(t *testing.T) {
+	sqlText, args := buildRawFrameSQL("lingniu_vehicle_ts.raw_frames", RawFrameQuery{
+		Protocol: "JT808",
+		OrderBy:  "receivedAt",
+		Limit:    1,
+	})
+	if len(args) != 0 {
+		t.Fatalf("expected no query args for TDengine, got %#v", args)
+	}
+	if !strings.Contains(sqlText, "ORDER BY received_at DESC LIMIT 1 OFFSET 0") {
+		t.Fatalf("sql should order by received_at: %s", sqlText)
+	}
+}
--- a/go/vehicle-gateway/internal/history/writer.go
+++ b/go/vehicle-gateway/internal/history/writer.go
@@ -133,7 +133,7 @@ func rawValues(env envelope.FrameEnvelope) []any {
 		messageIDInt(env.MessageID),
 		eventTime,
 		received,
-		rawSize(env.RawHex),
+		rawSizeBytes(env),
 		env.RawHex,
 		env.RawText,
 		jsonString(env.Parsed),
@@ -200,12 +200,15 @@ func messageIDInt(value string) int64 {
 	return parsed
 }

-func rawSize(rawHex string) int {
-	rawHex = strings.TrimSpace(rawHex)
+func rawSizeBytes(env envelope.FrameEnvelope) int {
+	rawHex := strings.TrimSpace(env.RawHex)
 	if len(rawHex)%2 != 0 {
 		return len(rawHex) / 2
 	}
-	return len(rawHex) / 2
+	if rawHex != "" {
+		return len(rawHex) / 2
+	}
+	return len([]byte(env.RawText))
 }

 func jsonString(value any) string {
--- a/go/vehicle-gateway/internal/history/writer_test.go
+++ b/go/vehicle-gateway/internal/history/writer_test.go
@@ -75,6 +75,18 @@ func TestWriterSkipsSparseDerivedRows(t *testing.T) {
 	}
 }

+func TestRawSizeBytesUsesRawTextWhenHexIsEmpty(t *testing.T) {
+	env := envelope.FrameEnvelope{RawText: `{"code":"0F80","data":{"speed":12}}`}
+	if got, want := rawSizeBytes(env), len([]byte(env.RawText)); got != want {
+		t.Fatalf("raw text size = %d, want %d", got, want)
+	}
+
+	env.RawHex = "7E0200"
+	if got, want := rawSizeBytes(env), 3; got != want {
+		t.Fatalf("raw hex size = %d, want %d", got, want)
+	}
+}
+
 func sampleEnvelope() envelope.FrameEnvelope {
 	return envelope.FrameEnvelope{
 		Protocol:       envelope.ProtocolJT808,
--- a/go/vehicle-gateway/internal/protocol/gb32960/parser.go
+++ b/go/vehicle-gateway/internal/protocol/gb32960/parser.go
@@ -38,7 +38,7 @@ func ExtractFrames(stream []byte) (frames [][]byte, remainder []byte, err error)
 			return frames, append([]byte(nil), remaining...), nil
 		}
 		bodyLen := int(binary.BigEndian.Uint16(remaining[22:24]))
-		frameLen := headerLen + bodyLen + 1
+		frameLen := frameLength(remaining, bodyLen)
 		if len(remaining) < frameLen {
 			return frames, append([]byte(nil), remaining...), nil
 		}
@@ -59,7 +59,8 @@ func ParseFrame(raw []byte, receivedAtMS int64, sourceEndpoint string) (envelope
 		return envelope.FrameEnvelope{}, fmt.Errorf("%w: %s", ErrBadStartSymbol, hex.EncodeToString(raw[:2]))
 	}
 	bodyLen := int(binary.BigEndian.Uint16(raw[22:24]))
-	if len(raw) != headerLen+bodyLen+1 {
+	actualBodyLen := len(raw) - headerLen - 1
+	if len(raw) != headerLen+bodyLen+1 && !isExtendedPlatformLogin(raw[2], bodyLen, actualBodyLen) {
 		return envelope.FrameEnvelope{}, fmt.Errorf("%w: declared=%d actual=%d", ErrBodyLength, bodyLen, len(raw)-headerLen-1)
 	}
 	if got, want := bcc(raw[2:len(raw)-1]), raw[len(raw)-1]; got != want {
@@ -69,15 +70,16 @@ func ParseFrame(raw []byte, receivedAtMS int64, sourceEndpoint string) (envelope
 	command := raw[2]
 	responseFlag := raw[3]
 	vin := strings.TrimRight(string(raw[4:21]), "\x00 ")
-	body := raw[headerLen : headerLen+bodyLen]
+	body := raw[headerLen : headerLen+actualBodyLen]
 	parsed := map[string]any{
 		"header": map[string]any{
-			"version":       version,
-			"command":       fmt.Sprintf("0x%02X", command),
-			"response_flag": fmt.Sprintf("0x%02X", responseFlag),
-			"vin":           vin,
-			"encrypt":       raw[21],
-			"body_length":   bodyLen,
+			"version":            version,
+			"command":            fmt.Sprintf("0x%02X", command),
+			"response_flag":      fmt.Sprintf("0x%02X", responseFlag),
+			"vin":                vin,
+			"encrypt":            raw[21],
+			"body_length":        bodyLen,
+			"actual_body_length": actualBodyLen,
 		},
 	}
 	fields := map[string]any{}
@@ -91,6 +93,16 @@ func ParseFrame(raw []byte, receivedAtMS int64, sourceEndpoint string) (envelope
 			parsed["device_time"] = eventTime.Format(time.RFC3339)
 		}
 		parsed["data_units"] = units
+	} else if command == 0x05 {
+		login := parsePlatformLogin(body)
+		parsed["platform_login"] = login
+		if deviceTime, ok := login["login_time"].(string); ok && deviceTime != "" {
+			fields["device_time"] = deviceTime
+			parsed["device_time"] = deviceTime
+		}
+		if account, ok := login["username"].(string); ok && account != "" {
+			fields["platform_account"] = account
+		}
 	}

 	env := envelope.FrameEnvelope{
@@ -113,7 +125,7 @@ func parseDataBody(version string, body []byte, fields map[string]any) (time.Tim
 	if len(body) < 6 {
 		return time.Time{}, nil
 	}
-	eventTime := parseBCDTime(body[:6])
+	eventTime := parseGBTime(body[:6])
 	cursor := 6
 	var units []map[string]any
 	for cursor < len(body) {
@@ -303,6 +315,54 @@ func parseDataBody(version string, body []byte, fields map[string]any) (time.Tim
 	return eventTime, units
 }

+func frameLength(frameStart []byte, bodyLen int) int {
+	standardLen := headerLen + bodyLen + 1
+	if len(frameStart) < headerLen || frameStart[2] != 0x05 || bodyLen != 41 {
+		return standardLen
+	}
+	// Some field platform-login frames declare the standard 41-byte body but
+	// carry a 32-byte password, making the actual body 53 bytes. Only consume
+	// the extended form when its own BCC verifies so the splitter does not eat
+	// bytes from the next frame.
+	extendedLen := headerLen + 53 + 1
+	if len(frameStart) < extendedLen {
+		return standardLen
+	}
+	extended := frameStart[:extendedLen]
+	if bcc(extended[2:len(extended)-1]) == extended[len(extended)-1] {
+		return extendedLen
+	}
+	return standardLen
+}
+
+func isExtendedPlatformLogin(command byte, declaredBodyLen int, actualBodyLen int) bool {
+	return command == 0x05 && declaredBodyLen == 41 && actualBodyLen == 53
+}
+
+func parsePlatformLogin(body []byte) map[string]any {
+	login := map[string]any{
+		"raw_body_length": len(body),
+	}
+	if len(body) < 9 {
+		login["error"] = "truncated"
+		return login
+	}
+	loginTime := parseGBTime(body[:6])
+	if !loginTime.IsZero() {
+		login["login_time"] = loginTime.Format(time.RFC3339)
+	}
+	login["serial_no"] = binary.BigEndian.Uint16(body[6:8])
+	if len(body) >= 21 {
+		login["username"] = trimASCII(body[8:20])
+	}
+	if len(body) > 21 {
+		passwordEnd := len(body) - 1
+		login["password"] = trimASCII(body[20:passwordEnd])
+		login["encrypt_rule"] = body[passwordEnd]
+	}
+	return login
+}
+
 func parseVehicleData(data []byte) map[string]any {
 	return map[string]any{
 		"vehicle_status":   int(data[0]),
@@ -751,24 +811,24 @@ func version(a byte, b byte) (string, bool) {
 	}
 }

-func parseBCDTime(data []byte) time.Time {
+func parseGBTime(data []byte) time.Time {
 	if len(data) != 6 {
 		return time.Time{}
 	}
-	year := 2000 + bcdByte(data[0])
-	month := time.Month(bcdByte(data[1]))
-	day := bcdByte(data[2])
-	hour := bcdByte(data[3])
-	minute := bcdByte(data[4])
-	second := bcdByte(data[5])
+	year := 2000 + int(data[0])
+	month := time.Month(data[1])
+	day := int(data[2])
+	hour := int(data[3])
+	minute := int(data[4])
+	second := int(data[5])
 	if month < 1 || month > 12 || day < 1 || day > 31 || hour > 23 || minute > 59 || second > 59 {
 		return time.Time{}
 	}
 	return time.Date(year, month, day, hour, minute, second, 0, time.FixedZone("Asia/Shanghai", 8*3600))
 }

-func bcdByte(value byte) int {
-	return int(value>>4)*10 + int(value&0x0f)
+func trimASCII(data []byte) string {
+	return strings.TrimRight(string(data), "\x00 ")
 }

 func bcc(data []byte) byte {
--- a/go/vehicle-gateway/internal/protocol/gb32960/parser_test.go
+++ b/go/vehicle-gateway/internal/protocol/gb32960/parser_test.go
@@ -12,7 +12,7 @@ import (
 const realFuelCellFrame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

 func TestExtractFramesKeepsPartialRemainderAndParsesHeader(t *testing.T) {
-	first := buildFrame(0x02, 0xfe, "LNBSCB3D4R1234567", []byte{0x1a, 0x06, 0x30, 0x16, 0x23, 0x57})
+	first := buildFrame(0x02, 0xfe, "LNBSCB3D4R1234567", []byte{0x1a, 0x06, 0x1e, 0x16, 0x17, 0x39})
 	second := buildFrame(0x05, 0xfe, "PLATFORM-LOGIN001", nil)
 	stream := append([]byte{0x00, 0x01}, first...)
 	stream = append(stream, second[:len(second)-3]...)
@@ -49,8 +49,81 @@ func TestParseFrameRejectsBadBCC(t *testing.T) {
 	}
 }

+func TestExtractFramesSupportsExtendedPlatformLogin(t *testing.T) {
+	body := []byte{0x1a, 0x07, 0x02, 0x00, 0x26, 0x1f, 0x00, 0x01}
+	body = append(body, fixedASCII("Hyundai", 12)...)
+	body = append(body, fixedASCII("f2e3445d7cda409fb4f278f6fb890734", 32)...)
+	body = append(body, 0x01)
+	frame := buildFrameWithDeclaredLength(0x05, 0xfe, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", body, 41)
+
+	frames, remainder, err := ExtractFrames(append(frame, []byte{0x23, 0x23, 0x05}...))
+	if err != nil {
+		t.Fatalf("ExtractFrames() error = %v", err)
+	}
+	if len(frames) != 1 || len(remainder) != 3 {
+		t.Fatalf("unexpected split frames=%d remainder=%s", len(frames), hex.EncodeToString(remainder))
+	}
+	if len(frames[0]) != headerLen+53+1 {
+		t.Fatalf("extended frame len = %d", len(frames[0]))
+	}
+
+	env, err := ParseFrame(frames[0], 1782745114999, "8.134.95.166:39376")
+	if err != nil {
+		t.Fatalf("ParseFrame() error = %v", err)
+	}
+	if env.MessageID != "0x05" || env.ParseStatus != envelope.ParseOK {
+		t.Fatalf("unexpected env: %#v", env)
+	}
+	header := env.Parsed["header"].(map[string]any)
+	if header["body_length"] != 41 || header["actual_body_length"] != 53 {
+		t.Fatalf("unexpected length header: %#v", header)
+	}
+	login := env.Parsed["platform_login"].(map[string]any)
+	if login["username"] != "Hyundai" || login["password"] != "f2e3445d7cda409fb4f278f6fb890734" {
+		t.Fatalf("unexpected platform login: %#v", login)
+	}
+	if login["login_time"] != "2026-07-02T00:38:31+08:00" {
+		t.Fatalf("unexpected login time: %#v", login)
+	}
+	if env.Fields["platform_account"] != "Hyundai" {
+		t.Fatalf("platform account not exposed: %#v", env.Fields)
+	}
+}
+
+func TestAutoResponseEchoesRawVINAndOriginalTime(t *testing.T) {
+	body := []byte{0x1a, 0x07, 0x02, 0x00, 0x26, 0x0f, 0x00, 0x01}
+	body = append(body, fixedASCII("Hyundai", 12)...)
+	body = append(body, fixedASCII("ack-test-password", 32)...)
+	body = append(body, 0x01)
+	request := buildFrameWithDeclaredLength(0x05, 0xfe, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", body, 41)
+	env, err := ParseFrame(request, 1782914969584, "8.134.95.166:39376")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	response, ok, err := AutoResponse(request, env)
+	if err != nil {
+		t.Fatalf("AutoResponse() error = %v", err)
+	}
+	if !ok {
+		t.Fatal("expected response")
+	}
+	if response[2] != 0x05 || response[3] != 0x01 {
+		t.Fatalf("unexpected response header: %x", response[:4])
+	}
+	if hex.EncodeToString(response[4:21]) != "0000000000000000000000000000000000" {
+		t.Fatalf("raw vin not echoed: %x", response[4:21])
+	}
+	if hex.EncodeToString(response[24:30]) != "1a070200260f" {
+		t.Fatalf("timestamp body not preserved: %x", response[24:30])
+	}
+	if got, want := bcc(response[2:len(response)-1]), response[len(response)-1]; got != want {
+		t.Fatalf("response bcc got=0x%02x want=0x%02x", got, want)
+	}
+}
+
 func TestParseFrameExtractsRealtimeVehicleMileageAndPosition(t *testing.T) {
-	body := []byte{0x1a, 0x06, 0x30, 0x16, 0x23, 0x57}
+	body := []byte{0x1a, 0x06, 0x1e, 0x16, 0x17, 0x39}
 	body = append(body, 0x01)
 	body = append(body,
 		0x01,       // vehicle status
@@ -163,13 +236,23 @@ func assertIntField(t *testing.T, env envelope.FrameEnvelope, key string, want i
 }

 func buildFrame(command byte, response byte, vin string, body []byte) []byte {
+	return buildFrameWithDeclaredLength(command, response, vin, body, len(body))
+}
+
+func buildFrameWithDeclaredLength(command byte, response byte, vin string, body []byte, declaredBodyLen int) []byte {
 	frame := []byte{'#', '#', command, response}
 	vinBytes := []byte(vin)
 	if len(vinBytes) < 17 {
 		vinBytes = append(vinBytes, make([]byte, 17-len(vinBytes))...)
 	}
 	frame = append(frame, vinBytes[:17]...)
-	frame = append(frame, 0x01, byte(len(body)>>8), byte(len(body)))
+	frame = append(frame, 0x01, byte(declaredBodyLen>>8), byte(declaredBodyLen))
 	frame = append(frame, body...)
 	return append(frame, bcc(frame[2:]))
 }
+
+func fixedASCII(value string, size int) []byte {
+	out := make([]byte, size)
+	copy(out, []byte(value))
+	return out
+}
--- a/go/vehicle-gateway/internal/protocol/gb32960/response.go
+++ b/go/vehicle-gateway/internal/protocol/gb32960/response.go
@@ -0,0 +1,80 @@
+package gb32960
+
+import (
+	"encoding/binary"
+	"errors"
+	"time"
+
+	"lingniu-vehicle-ingest/go/vehicle-gateway/internal/envelope"
+)
+
+var ErrResponseFrameTooShort = errors.New("gb32960 response frame too short")
+
+const (
+	responseSuccess = byte(0x01)
+	responseCommand = byte(0xfe)
+	encryptNone     = byte(0x01)
+)
+
+// AutoResponse builds the protocol ACK for accepted upstream GB/T 32960 frames.
+// The ACK is written only after the caller has durably published the frame.
+func AutoResponse(raw []byte, env envelope.FrameEnvelope) ([]byte, bool, error) {
+	if env.ParseStatus == envelope.ParseBadFrame {
+		return nil, false, nil
+	}
+	if len(raw) < headerLen+1 {
+		return nil, false, ErrResponseFrameTooShort
+	}
+	if raw[3] != responseCommand {
+		return nil, false, nil
+	}
+	command := raw[2]
+	if !shouldRespond(command) {
+		return nil, false, nil
+	}
+
+	body := []byte(nil)
+	if timestamp := responseTime(raw, command); !timestamp.IsZero() {
+		body = encodeGBTime(timestamp)
+	}
+	return buildResponse(raw[0], command, responseSuccess, raw[4:21], body), true, nil
+}
+
+func shouldRespond(command byte) bool {
+	switch command {
+	case 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08:
+		return true
+	default:
+		return false
+	}
+}
+
+func responseTime(raw []byte, command byte) time.Time {
+	bodyLen := len(raw) - headerLen - 1
+	if bodyLen >= 6 {
+		return parseGBTime(raw[headerLen : headerLen+6])
+	}
+	return time.Now().In(time.FixedZone("Asia/Shanghai", 8*3600))
+}
+
+func encodeGBTime(t time.Time) []byte {
+	local := t.In(time.FixedZone("Asia/Shanghai", 8*3600))
+	return []byte{
+		byte(local.Year() - 2000),
+		byte(local.Month()),
+		byte(local.Day()),
+		byte(local.Hour()),
+		byte(local.Minute()),
+		byte(local.Second()),
+	}
+}
+
+func buildResponse(start byte, command byte, responseFlag byte, vin17 []byte, body []byte) []byte {
+	out := make([]byte, 0, headerLen+len(body)+1)
+	out = append(out, start, start, command, responseFlag)
+	out = append(out, vin17[:17]...)
+	out = append(out, encryptNone, 0, 0)
+	binary.BigEndian.PutUint16(out[22:24], uint16(len(body)))
+	out = append(out, body...)
+	return append(out, bcc(out[2:]))
+}
--- a/go/vehicle-gateway/internal/protocol/jt808/parser.go
+++ b/go/vehicle-gateway/internal/protocol/jt808/parser.go
@@ -10,8 +10,8 @@ import (
 	"time"
 	"unicode/utf8"

-	"lingniu-vehicle-ingest/go/vehicle-gateway/internal/envelope"
 	"golang.org/x/text/encoding/simplifiedchinese"
+	"lingniu-vehicle-ingest/go/vehicle-gateway/internal/envelope"
 )

 var (
@@ -97,16 +97,19 @@ func ParseFrame(raw []byte, receivedAtMS int64, sourceEndpoint string) (envelope
 		phoneEnd = 15
 		serialStart = 15
 	}
-	if props&0x2000 != 0 {
+	subpackage := props&0x2000 != 0
+	if subpackage {
 		headerLen += 4
+	}
+	if len(raw) < headerLen+int(bodySize)+1 {
+		return envelope.FrameEnvelope{}, fmt.Errorf("%w: bodySize=%d len=%d", ErrFrameTooShort, bodySize, len(raw))
+	}
+	if subpackage {
 		packageInfo = map[string]any{
 			"total": binary.BigEndian.Uint16(raw[serialStart+2 : serialStart+4]),
 			"index": binary.BigEndian.Uint16(raw[serialStart+4 : serialStart+6]),
 		}
 	}
-	if len(raw) < headerLen+int(bodySize)+1 {
-		return envelope.FrameEnvelope{}, fmt.Errorf("%w: bodySize=%d len=%d", ErrFrameTooShort, bodySize, len(raw))
-	}

 	phoneBCD := raw[phoneStart:phoneEnd]
 	phone := bcdString(phoneBCD)
@@ -126,7 +129,7 @@ func ParseFrame(raw []byte, receivedAtMS int64, sourceEndpoint string) (envelope
 			"phone":            phone,
 			"phone_trim_zero":  phoneTrimZero,
 			"sequence":         binary.BigEndian.Uint16(raw[serialStart : serialStart+2]),
-			"subpackage":       props&0x2000 != 0,
+			"subpackage":       subpackage,
 			"package_info":     packageInfo,
 			"encryption_flags": (props >> 10) & 0x07,
 		},
@@ -155,7 +158,7 @@ func ParseFrame(raw []byte, receivedAtMS int64, sourceEndpoint string) (envelope
 			fields[envelope.FieldTotalMileageKM] = *location.TotalMileageKM
 		}
 	} else if messageID == 0x0100 {
-		registration, err := parseRegistration(body)
+		registration, err := parseRegistration(body, versioned)
 		if err != nil {
 			return envelope.FrameEnvelope{}, err
 		}
@@ -167,7 +170,7 @@ func ParseFrame(raw []byte, receivedAtMS int64, sourceEndpoint string) (envelope
 			fields["plate"] = plate
 		}
 	} else if messageID == 0x0102 {
-		authentication := parseAuthentication(body)
+		authentication := parseAuthentication(body, versioned)
 		parsed["authentication"] = authentication
 		if token, ok := authentication["token"].(string); ok {
 			fields["auth_token"] = token
@@ -195,37 +198,107 @@ func ParseFrame(raw []byte, receivedAtMS int64, sourceEndpoint string) (envelope
 	return env, nil
 }

-func parseRegistration(body []byte) (map[string]any, error) {
-	if len(body) < 37 {
+func parseRegistration(body []byte, versioned bool) (map[string]any, error) {
+	schemaVersion := "2011_2013"
+	manufacturerSize := 5
+	deviceTypeSize := 20
+	deviceIDSize := 7
+	if versioned {
+		schemaVersion = "2019"
+		manufacturerSize = 11
+		deviceTypeSize = 30
+		deviceIDSize = 30
+	}
+	minLen := 2 + 2 + manufacturerSize + deviceTypeSize + deviceIDSize + 1
+	if len(body) < minLen {
 		return nil, fmt.Errorf("%w: registration body len=%d", ErrFrameTooShort, len(body))
 	}
+	manufacturerStart := 4
+	deviceTypeStart := manufacturerStart + manufacturerSize
+	deviceIDStart := deviceTypeStart + deviceTypeSize
+	plateColorStart := deviceIDStart + deviceIDSize
 	registration := map[string]any{
-		"province":     binary.BigEndian.Uint16(body[0:2]),
-		"city":         binary.BigEndian.Uint16(body[2:4]),
-		"manufacturer": fixedText(body[4:9]),
-		"device_type":  fixedText(body[9:29]),
-		"device_id":    fixedText(body[29:36]),
-		"plate_color":  body[36],
-		"plate":        freeText(body[37:]),
+		"schema_version": schemaVersion,
+		"province":       binary.BigEndian.Uint16(body[0:2]),
+		"city":           binary.BigEndian.Uint16(body[2:4]),
+		"manufacturer":   fixedText(body[manufacturerStart:deviceTypeStart]),
+		"device_type":    fixedText(body[deviceTypeStart:deviceIDStart]),
+		"device_id":      fixedText(body[deviceIDStart:plateColorStart]),
+		"plate_color":    body[plateColorStart],
+		"plate":          freeText(body[plateColorStart+1:]),
 	}
 	return registration, nil
 }

-func parseAuthentication(body []byte) map[string]any {
-	token := freeText(body)
-	out := map[string]any{"token": token}
-	return out
+func parseAuthentication(body []byte, versioned bool) map[string]any {
+	if versioned {
+		if out, ok := parseVersionedAuthentication(body); ok {
+			return out
+		}
+		if out, ok := parseDelimitedVersionedAuthentication(body); ok {
+			return out
+		}
+	}
+	return map[string]any{"token": freeText(body)}
+}
+
+func parseVersionedAuthentication(body []byte) (map[string]any, bool) {
+	if len(body) < 17 {
+		return nil, false
+	}
+	tokenLen := int(body[0])
+	imeiStart := 1 + tokenLen
+	softwareLenStart := imeiStart + 15
+	if tokenLen <= 0 || len(body) < softwareLenStart+1 {
+		return nil, false
+	}
+	softwareLen := int(body[softwareLenStart])
+	softwareStart := softwareLenStart + 1
+	if len(body) < softwareStart+softwareLen {
+		return nil, false
+	}
+	return map[string]any{
+		"schema_version":   "2019",
+		"token":            freeText(body[1:imeiStart]),
+		"imei":             fixedText(body[imeiStart:softwareLenStart]),
+		"software_version": freeText(body[softwareStart : softwareStart+softwareLen]),
+	}, true
+}
+
+func parseDelimitedVersionedAuthentication(body []byte) (map[string]any, bool) {
+	parts := bytes.Split(body, []byte{0xff, 0xff})
+	if len(parts) < 2 {
+		return nil, false
+	}
+	out := map[string]any{
+		"schema_version": "2019_delimited",
+		"token":          freeText(parts[0]),
+		"imei":           freeText(parts[1]),
+	}
+	if len(parts) > 2 {
+		out["software_version"] = freeText(parts[2])
+	}
+	return out, true
 }

 func parseLocation(body []byte) (Location, error) {
 	if len(body) < 28 {
 		return Location{}, fmt.Errorf("%w: location body len=%d", ErrFrameTooShort, len(body))
 	}
+	status := binary.BigEndian.Uint32(body[4:8])
+	latitude := float64(binary.BigEndian.Uint32(body[8:12])) / 1_000_000
+	longitude := float64(binary.BigEndian.Uint32(body[12:16])) / 1_000_000
+	if status&(1<<2) != 0 {
+		latitude = -latitude
+	}
+	if status&(1<<3) != 0 {
+		longitude = -longitude
+	}
 	location := Location{
 		AlarmFlag:    binary.BigEndian.Uint32(body[0:4]),
-		StatusFlag:   binary.BigEndian.Uint32(body[4:8]),
-		Latitude:     float64(binary.BigEndian.Uint32(body[8:12])) / 1_000_000,
-		Longitude:    float64(binary.BigEndian.Uint32(body[12:16])) / 1_000_000,
+		StatusFlag:   status,
+		Latitude:     latitude,
+		Longitude:    longitude,
 		AltitudeM:    binary.BigEndian.Uint16(body[16:18]),
 		SpeedKMH:     float64(binary.BigEndian.Uint16(body[18:20])) / 10,
 		DirectionDeg: binary.BigEndian.Uint16(body[20:22]),
@@ -256,14 +329,105 @@ func parseAdditional(data []byte, location *Location) []AdditionalItem {
 			Length:   size,
 			ValueHex: strings.ToUpper(hex.EncodeToString(value)),
 		}
-		// JT/T 808-2011 table 27: id 0x01 is GPS total mileage, DWORD, 0.1 km.
-		if id == 0x01 && size == 4 {
-			mileage := float64(binary.BigEndian.Uint32(value)) / 10
+		switch {
+		case id == 0x01 && size == 4:
+			rawMileage := binary.BigEndian.Uint32(value)
+			mileage := float64(rawMileage) / 10
 			location.TotalMileageKM = &mileage
 			item.Parsed = map[string]any{
-				"name":  envelope.FieldTotalMileageKM,
-				"value": mileage,
-				"unit":  "km",
+				"name":               envelope.FieldTotalMileageKM,
+				"raw_value_tenth_km": rawMileage,
+				"value":              mileage,
+				"unit":               "km",
+			}
+		case id == 0x02 && size == 2:
+			rawFuel := binary.BigEndian.Uint16(value)
+			item.Parsed = map[string]any{
+				"name":              "fuel_l",
+				"raw_value_tenth_l": rawFuel,
+				"value":             float64(rawFuel) / 10,
+				"unit":              "L",
+			}
+		case id == 0x03 && size == 2:
+			rawSpeed := binary.BigEndian.Uint16(value)
+			item.Parsed = map[string]any{
+				"name":                "recorder_speed_kmh",
+				"raw_value_tenth_kmh": rawSpeed,
+				"value":               float64(rawSpeed) / 10,
+				"unit":                "km/h",
+			}
+		case id == 0x04 && size == 2:
+			item.Parsed = map[string]any{
+				"name":  "manual_alarm_event_id",
+				"value": binary.BigEndian.Uint16(value),
+			}
+		case id == 0x05 && size == 30:
+			item.Parsed = map[string]any{
+				"name":   "tire_pressure",
+				"values": parseTirePressure(value),
+			}
+		case id == 0x06 && size == 2:
+			item.Parsed = map[string]any{
+				"name":  "carriage_temperature_c",
+				"value": int16(binary.BigEndian.Uint16(value)),
+				"unit":  "C",
+			}
+		case id == 0x11 && (size == 1 || size == 5):
+			parsed := map[string]any{
+				"name":          "overspeed_alarm",
+				"location_type": value[0],
+			}
+			if size == 5 {
+				parsed["area_id"] = binary.BigEndian.Uint32(value[1:5])
+			}
+			item.Parsed = parsed
+		case id == 0x12 && size == 6:
+			item.Parsed = map[string]any{
+				"name":          "area_route_alarm",
+				"location_type": value[0],
+				"area_id":       binary.BigEndian.Uint32(value[1:5]),
+				"direction":     value[5],
+			}
+		case id == 0x13 && size == 7:
+			item.Parsed = map[string]any{
+				"name":                       "road_section_driving_time_alarm",
+				"road_section_id":            binary.BigEndian.Uint32(value[0:4]),
+				"driving_time_seconds":       binary.BigEndian.Uint16(value[4:6]),
+				"result":                     value[6],
+				"result_description":         roadSectionDrivingTimeResult(value[6]),
+				"driving_time_result_source": "jt808_0x0200_additional_0x13",
+			}
+		case id == 0x25 && size == 4:
+			rawStatus := binary.BigEndian.Uint32(value)
+			item.Parsed = map[string]any{
+				"name":  "extended_vehicle_signal_status",
+				"value": rawStatus,
+				"bits":  parseExtendedVehicleSignal(rawStatus),
+			}
+		case id == 0x2a && size == 2:
+			rawStatus := binary.BigEndian.Uint16(value)
+			item.Parsed = map[string]any{
+				"name":  "io_status",
+				"value": rawStatus,
+				"bits":  parseIOStatus(rawStatus),
+			}
+		case id == 0x2b && size == 4:
+			analog := binary.BigEndian.Uint32(value)
+			item.Parsed = map[string]any{
+				"name":  "analog",
+				"ad0":   analog & 0xffff,
+				"ad1":   analog >> 16,
+				"value": analog,
+			}
+		case id == 0x30 && size == 1:
+			item.Parsed = map[string]any{
+				"name":  "network_signal_strength",
+				"value": value[0],
+			}
+		case id == 0x31 && size == 1:
+			item.Parsed = map[string]any{
+				"name":  "gnss_satellite_count",
+				"value": value[0],
 			}
 		}
 		out = append(out, item)
@@ -308,6 +472,55 @@ func additionalToMaps(items []AdditionalItem) []map[string]any {
 	return out
 }

+func parseTirePressure(data []byte) []map[string]any {
+	out := make([]map[string]any, 0, len(data))
+	for index, value := range data {
+		out = append(out, map[string]any{
+			"position": index,
+			"value":    value,
+			"valid":    value != 0xff,
+		})
+	}
+	return out
+}
+
+func parseExtendedVehicleSignal(value uint32) map[string]bool {
+	return map[string]bool{
+		"low_beam":        value&0x0001 != 0,
+		"high_beam":       value&0x0002 != 0,
+		"right_turn":      value&0x0004 != 0,
+		"left_turn":       value&0x0008 != 0,
+		"brake":           value&0x0010 != 0,
+		"reverse_gear":    value&0x0020 != 0,
+		"fog_light":       value&0x0040 != 0,
+		"clearance_light": value&0x0080 != 0,
+		"horn":            value&0x0100 != 0,
+		"air_conditioner": value&0x0200 != 0,
+		"neutral":         value&0x0400 != 0,
+		"retarder":        value&0x0800 != 0,
+		"abs":             value&0x1000 != 0,
+		"heater":          value&0x2000 != 0,
+		"clutch":          value&0x4000 != 0,
+	}
+}
+
+func parseIOStatus(value uint16) map[string]bool {
+	return map[string]bool{
+		"deep_sleep": value&0x0001 != 0,
+		"sleep":      value&0x0002 != 0,
+	}
+}
+
+func roadSectionDrivingTimeResult(value byte) string {
+	if value == 0 {
+		return "insufficient"
+	}
+	if value == 1 {
+		return "too_long"
+	}
+	return "unknown"
+}
+
 func bcdString(data []byte) string {
 	out := make([]byte, 0, len(data)*2)
 	for _, value := range data {
--- a/go/vehicle-gateway/internal/protocol/jt808/parser_test.go
+++ b/go/vehicle-gateway/internal/protocol/jt808/parser_test.go
@@ -10,6 +10,7 @@ import (

 const sampleLocationFrame = "7E020000320133077954250001000000000048000301D2C4C707376139000A00E6004F26063016235701040001900C2504000000000202000030011F31010F867E"
 const real2019LocationFrame = "7E02004046010000000001489413506007CB00000000004C000301D276AB06FBFF4B000D014E00E826070122092214040000000017020000010400013361030201402504000000012A02000030011D310112EA0402008000C57E"
+const fullAdditionalLocationFrame = "7e020000800123456789017fff000004000000080006eeb6ad02633df701380003006320070719235901040000000b02020016030200210402002c051e3737370000000000000000000000000000000000000000000000000000001105420000004212064d0000004d4d1307000000580058582504000000632a02000a2b040000001430011e31012806020001927e"

 func TestExtractFramesUnescapesAndParsesLocationWithTotalMileage(t *testing.T) {
 	stream, err := hex.DecodeString(sampleLocationFrame + "7E02000000")
@@ -63,6 +64,13 @@ func TestExtractFramesUnescapesAndParsesLocationWithTotalMileage(t *testing.T) {
 	if additional[0]["id"] != "0x01" || additional[0]["value_hex"] != "0001900C" {
 		t.Fatalf("unexpected first additional item: %#v", additional[0])
 	}
+	parsed, ok := additional[0]["parsed"].(map[string]any)
+	if !ok {
+		t.Fatalf("mileage parsed field missing: %#v", additional[0])
+	}
+	if parsed["raw_value_tenth_km"] != uint32(102412) || parsed["value"] != 10241.2 {
+		t.Fatalf("unexpected mileage parsed value: %#v", parsed)
+	}
 }

 func TestParseFrameSupportsJT8082019VersionedHeader(t *testing.T) {
@@ -115,6 +123,89 @@ func TestParseFrameSupportsJT8082019VersionedHeader(t *testing.T) {
 	}
 }

+func TestParseFrameParsesCommonLocationAdditionalItems(t *testing.T) {
+	stream, err := hex.DecodeString(fullAdditionalLocationFrame)
+	if err != nil {
+		t.Fatal(err)
+	}
+	frames, remainder, err := ExtractFrames(stream)
+	if err != nil {
+		t.Fatalf("ExtractFrames() error = %v", err)
+	}
+	if len(frames) != 1 || len(remainder) != 0 {
+		t.Fatalf("unexpected split result frames=%d remainder=%s", len(frames), hex.EncodeToString(remainder))
+	}
+
+	env, err := ParseFrame(frames[0], 1782914967713, "127.0.0.1:808")
+	if err != nil {
+		t.Fatalf("ParseFrame() error = %v", err)
+	}
+	if env.Phone != "012345678901" {
+		t.Fatalf("phone = %q", env.Phone)
+	}
+	assertFloatField(t, env, envelope.FieldTotalMileageKM, 1.1)
+
+	location := env.Parsed["location"].(map[string]any)
+	additional := location["additional"].([]map[string]any)
+	byID := map[string]map[string]any{}
+	for _, item := range additional {
+		byID[item["id"].(string)] = item["parsed"].(map[string]any)
+	}
+	if byID["0x01"]["raw_value_tenth_km"] != uint32(11) || byID["0x01"]["value"] != 1.1 {
+		t.Fatalf("mileage parsed = %#v", byID["0x01"])
+	}
+	if byID["0x05"]["name"] != "tire_pressure" {
+		t.Fatalf("tire pressure missing: %#v", byID["0x05"])
+	}
+	tireValues := byID["0x05"]["values"].([]map[string]any)
+	if tireValues[0]["value"] != byte(0x37) || tireValues[0]["valid"] != true {
+		t.Fatalf("tire pressure first value = %#v", tireValues[0])
+	}
+	if byID["0x11"]["location_type"] != byte(0x42) || byID["0x11"]["area_id"] != uint32(0x42) {
+		t.Fatalf("overspeed parsed = %#v", byID["0x11"])
+	}
+	if byID["0x12"]["location_type"] != byte(0x4d) || byID["0x12"]["area_id"] != uint32(0x4d) || byID["0x12"]["direction"] != byte(0x4d) {
+		t.Fatalf("area route parsed = %#v", byID["0x12"])
+	}
+	if byID["0x13"]["road_section_id"] != uint32(0x58) || byID["0x13"]["driving_time_seconds"] != uint16(0x58) {
+		t.Fatalf("road section parsed = %#v", byID["0x13"])
+	}
+	ioBits := byID["0x2A"]["bits"].(map[string]bool)
+	if ioBits["deep_sleep"] || !ioBits["sleep"] {
+		t.Fatalf("io bits = %#v", ioBits)
+	}
+}
+
+func TestParseFrameRejectsTruncatedSubpackageHeader(t *testing.T) {
+	payload := []byte{0x02, 0x00, 0x20, 0x00}
+	payload = append(payload, encodeBCD("013307795425", 6)...)
+	payload = binary.BigEndian.AppendUint16(payload, 1)
+	payload = append(payload, checksum(payload))
+
+	_, err := ParseFrame(payload, 1782914967713, "115.231.168.135:43625")
+	if err == nil {
+		t.Fatal("expected truncated subpackage header to fail")
+	}
+}
+
+func TestParseLocationAppliesSouthWestStatusBits(t *testing.T) {
+	body := make([]byte, 28)
+	binary.BigEndian.PutUint32(body[4:8], (1<<2)|(1<<3))
+	binary.BigEndian.PutUint32(body[8:12], 12345678)
+	binary.BigEndian.PutUint32(body[12:16], 98765432)
+
+	location, err := parseLocation(body)
+	if err != nil {
+		t.Fatalf("parseLocation() error = %v", err)
+	}
+	if location.Latitude != -12.345678 {
+		t.Fatalf("latitude = %v", location.Latitude)
+	}
+	if location.Longitude != -98.765432 {
+		t.Fatalf("longitude = %v", location.Longitude)
+	}
+}
+
 func TestParseFrameParsesRegistrationIdentity(t *testing.T) {
 	body := make([]byte, 0, 46)
 	body = binary.BigEndian.AppendUint16(body, 16)
@@ -153,6 +244,38 @@ func TestParseFrameParsesRegistrationIdentity(t *testing.T) {
 	}
 }

+func TestParseFrameParsesJT8082019RegistrationIdentity(t *testing.T) {
+	body := make([]byte, 0, 84)
+	body = binary.BigEndian.AppendUint16(body, 16)
+	body = binary.BigEndian.AppendUint16(body, 32)
+	body = appendFixedASCII(body, "YUTONG00001", 11)
+	body = appendFixedASCII(body, "ZK6105CHEVNPG4-2019", 30)
+	body = appendFixedASCII(body, "DEV201900000000000000000000001", 30)
+	body = append(body, 2)
+	body = append(body, []byte("TEST2019")...)
+
+	env, err := ParseFrame(buildVersionedFrame(0x0100, "14894135060", 11, body), 1782918600000, "115.231.168.135:43625")
+	if err != nil {
+		t.Fatalf("ParseFrame() error = %v", err)
+	}
+	if env.Phone != "14894135060" {
+		t.Fatalf("phone = %q", env.Phone)
+	}
+	if env.DeviceID != "DEV201900000000000000000000001" {
+		t.Fatalf("device id = %q", env.DeviceID)
+	}
+	if env.Plate != "TEST2019" {
+		t.Fatalf("plate = %q", env.Plate)
+	}
+	registration, ok := env.Parsed["registration"].(map[string]any)
+	if !ok {
+		t.Fatalf("registration missing: %#v", env.Parsed)
+	}
+	if registration["schema_version"] != "2019" || registration["manufacturer"] != "YUTONG00001" {
+		t.Fatalf("registration fields = %#v", registration)
+	}
+}
+
 func TestParseFrameDecodesGBKRegistrationPlate(t *testing.T) {
 	body := make([]byte, 0, 46)
 	body = binary.BigEndian.AppendUint16(body, 16)
@@ -172,6 +295,26 @@ func TestParseFrameDecodesGBKRegistrationPlate(t *testing.T) {
 	}
 }

+func TestParseFrameParsesJT8082019Authentication(t *testing.T) {
+	body := []byte{5}
+	body = append(body, []byte("TOKEN")...)
+	body = appendFixedASCII(body, "123456789012345", 15)
+	body = append(body, 4)
+	body = append(body, []byte("v1.2")...)
+
+	env, err := ParseFrame(buildVersionedFrame(0x0102, "14894135060", 12, body), 1782918600000, "115.231.168.135:43625")
+	if err != nil {
+		t.Fatalf("ParseFrame() error = %v", err)
+	}
+	auth, ok := env.Parsed["authentication"].(map[string]any)
+	if !ok {
+		t.Fatalf("authentication missing: %#v", env.Parsed)
+	}
+	if auth["token"] != "TOKEN" || auth["imei"] != "123456789012345" || auth["software_version"] != "v1.2" {
+		t.Fatalf("authentication = %#v", auth)
+	}
+}
+
 func TestParseFrameParsesAuthenticationToken(t *testing.T) {
 	env, err := ParseFrame(buildFrame(0x0102, "064646848757", 8, []byte("g7gps")), 1782918600000, "115.231.168.135:43625")
 	if err != nil {
@@ -189,6 +332,86 @@ func TestParseFrameParsesAuthenticationToken(t *testing.T) {
 	}
 }

+func TestAutoResponderBuildsRegisterAck(t *testing.T) {
+	body := make([]byte, 0, 46)
+	body = binary.BigEndian.AppendUint16(body, 16)
+	body = binary.BigEndian.AppendUint16(body, 32)
+	body = appendFixedASCII(body, "YUTNG", 5)
+	body = appendFixedASCII(body, "ZK6105CHEVNPG4", 20)
+	body = appendFixedASCII(body, "DEV0001", 7)
+	body = append(body, 2)
+	body = append(body, []byte("TEST123")...)
+	request := buildFrame(0x0100, "013079963379", 9, body)
+	env, err := ParseFrame(request, 1782918600000, "115.231.168.135:43625")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	response, ok, err := NewAutoResponder("g7gps").Respond(request, env)
+	if err != nil {
+		t.Fatalf("Respond() error = %v", err)
+	}
+	if !ok {
+		t.Fatal("expected response")
+	}
+	frames, remainder, err := ExtractFrames(response)
+	if err != nil {
+		t.Fatalf("ExtractFrames() error = %v", err)
+	}
+	if len(frames) != 1 || len(remainder) != 0 {
+		t.Fatalf("unexpected response split frames=%d remainder=%s", len(frames), hex.EncodeToString(remainder))
+	}
+	payload := frames[0]
+	if binary.BigEndian.Uint16(payload[0:2]) != 0x8100 {
+		t.Fatalf("message id = %04x", binary.BigEndian.Uint16(payload[0:2]))
+	}
+	if hex.EncodeToString(payload[4:10]) != "013079963379" {
+		t.Fatalf("phone bcd = %x", payload[4:10])
+	}
+	if binary.BigEndian.Uint16(payload[12:14]) != 9 || payload[14] != 0 || string(payload[15:20]) != "g7gps" {
+		t.Fatalf("unexpected register ack body: %x", payload[12:len(payload)-1])
+	}
+}
+
+func TestAutoResponderBuildsVersionedGeneralAck(t *testing.T) {
+	request := buildVersionedFrame(0x0200, "14894135060", 12, make([]byte, 28))
+	env, err := ParseFrame(request, 1782918600000, "115.231.168.135:43625")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	response, ok, err := NewAutoResponder("").Respond(request, env)
+	if err != nil {
+		t.Fatalf("Respond() error = %v", err)
+	}
+	if !ok {
+		t.Fatal("expected response")
+	}
+	frames, remainder, err := ExtractFrames(response)
+	if err != nil {
+		t.Fatalf("ExtractFrames() error = %v", err)
+	}
+	if len(frames) != 1 || len(remainder) != 0 {
+		t.Fatalf("unexpected response split frames=%d remainder=%s", len(frames), hex.EncodeToString(remainder))
+	}
+	payload := frames[0]
+	if binary.BigEndian.Uint16(payload[0:2]) != 0x8001 {
+		t.Fatalf("message id = %04x", binary.BigEndian.Uint16(payload[0:2]))
+	}
+	if binary.BigEndian.Uint16(payload[2:4])&0x4000 == 0 || payload[4] != 1 {
+		t.Fatalf("versioned header not preserved: %x", payload[:5])
+	}
+	if hex.EncodeToString(payload[5:15]) != "00000000014894135060" {
+		t.Fatalf("phone bcd = %x", payload[5:15])
+	}
+	bodyStart := 17
+	if binary.BigEndian.Uint16(payload[bodyStart:bodyStart+2]) != 12 ||
+		binary.BigEndian.Uint16(payload[bodyStart+2:bodyStart+4]) != 0x0200 ||
+		payload[bodyStart+4] != 0 {
+		t.Fatalf("unexpected general ack body: %x", payload[bodyStart:len(payload)-1])
+	}
+}
+
 func TestExtractFramesHandlesEscapedPayload(t *testing.T) {
 	payload := []byte{0x02, 0x00, 0x00, 0x02, 0x01, 0x33, 0x07, 0x79, 0x54, 0x25, 0x00, 0x01, 0x7e, 0x7d}
 	frame := append([]byte{0x7e}, escape(append(payload, checksum(payload)))...)
@@ -217,6 +440,18 @@ func buildFrame(messageID uint16, phone string, sequence uint16, body []byte) []
 	return payload
 }

+func buildVersionedFrame(messageID uint16, phone string, sequence uint16, body []byte) []byte {
+	payload := make([]byte, 0, 17+len(body)+1)
+	payload = binary.BigEndian.AppendUint16(payload, messageID)
+	payload = binary.BigEndian.AppendUint16(payload, 0x4000|uint16(len(body)))
+	payload = append(payload, 1)
+	payload = append(payload, encodeBCD(phone, 10)...)
+	payload = binary.BigEndian.AppendUint16(payload, sequence)
+	payload = append(payload, body...)
+	payload = append(payload, checksum(payload))
+	return payload
+}
+
 func appendFixedASCII(out []byte, value string, size int) []byte {
 	start := len(out)
 	out = append(out, make([]byte, size)...)
--- a/go/vehicle-gateway/internal/protocol/jt808/response.go
+++ b/go/vehicle-gateway/internal/protocol/jt808/response.go
@@ -0,0 +1,130 @@
+package jt808
+
+import (
+	"encoding/binary"
+	"errors"
+
+	"lingniu-vehicle-ingest/go/vehicle-gateway/internal/envelope"
+)
+
+var ErrResponseHeaderTooShort = errors.New("jt808 response header too short")
+
+const (
+	msgTerminalGeneralResponse = uint16(0x0001)
+	msgTerminalRegister        = uint16(0x0100)
+	msgPlatformGeneralResponse = uint16(0x8001)
+	msgPlatformRegisterAck     = uint16(0x8100)
+)
+
+type AutoResponder struct {
+	authCode string
+}
+
+func NewAutoResponder(authCode string) AutoResponder {
+	if authCode == "" {
+		authCode = "g7gps"
+	}
+	return AutoResponder{authCode: authCode}
+}
+
+func (r AutoResponder) Respond(raw []byte, env envelope.FrameEnvelope) ([]byte, bool, error) {
+	if env.ParseStatus == envelope.ParseBadFrame {
+		return nil, false, nil
+	}
+	header, err := parseResponseHeader(raw)
+	if err != nil {
+		return nil, false, err
+	}
+	if header.messageID == msgTerminalGeneralResponse {
+		return nil, false, nil
+	}
+	if header.messageID == msgTerminalRegister {
+		body := make([]byte, 3, 3+len(r.authCode))
+		binary.BigEndian.PutUint16(body[0:2], header.sequence)
+		body[2] = 0
+		body = append(body, []byte(r.authCode)...)
+		return encodeResponse(msgPlatformRegisterAck, header, body), true, nil
+	}
+	body := make([]byte, 5)
+	binary.BigEndian.PutUint16(body[0:2], header.sequence)
+	binary.BigEndian.PutUint16(body[2:4], header.messageID)
+	body[4] = 0
+	return encodeResponse(msgPlatformGeneralResponse, header, body), true, nil
+}
+
+type responseHeader struct {
+	messageID       uint16
+	versioned       bool
+	protocolVersion byte
+	phoneBCD        []byte
+	sequence        uint16
+}
+
+func parseResponseHeader(raw []byte) (responseHeader, error) {
+	if len(raw) < 12 {
+		return responseHeader{}, ErrResponseHeaderTooShort
+	}
+	props := binary.BigEndian.Uint16(raw[2:4])
+	versioned := props&0x4000 != 0
+	phoneStart := 4
+	phoneLen := 6
+	protocolVersion := byte(0)
+	if versioned {
+		if len(raw) < 17 {
+			return responseHeader{}, ErrResponseHeaderTooShort
+		}
+		protocolVersion = raw[4]
+		phoneStart = 5
+		phoneLen = 10
+	}
+	sequenceStart := phoneStart + phoneLen
+	if len(raw) < sequenceStart+2 {
+		return responseHeader{}, ErrResponseHeaderTooShort
+	}
+	phone := append([]byte(nil), raw[phoneStart:sequenceStart]...)
+	return responseHeader{
+		messageID:       binary.BigEndian.Uint16(raw[0:2]),
+		versioned:       versioned,
+		protocolVersion: protocolVersion,
+		phoneBCD:        phone,
+		sequence:        binary.BigEndian.Uint16(raw[sequenceStart : sequenceStart+2]),
+	}, nil
+}
+
+func encodeResponse(messageID uint16, header responseHeader, body []byte) []byte {
+	props := uint16(len(body)) & 0x03ff
+	if header.versioned {
+		props |= 0x4000
+	}
+	payload := make([]byte, 0, 4+1+len(header.phoneBCD)+2+len(body)+1)
+	payload = appendU16(payload, messageID)
+	payload = appendU16(payload, props)
+	if header.versioned {
+		payload = append(payload, header.protocolVersion)
+	}
+	payload = append(payload, header.phoneBCD...)
+	payload = appendU16(payload, header.sequence)
+	payload = append(payload, body...)
+	payload = append(payload, checksum(payload))
+	return frame(payload)
+}
+
+func appendU16(out []byte, value uint16) []byte {
+	return append(out, byte(value>>8), byte(value))
+}
+
+func frame(payload []byte) []byte {
+	out := []byte{0x7e}
+	for _, value := range payload {
+		switch value {
+		case 0x7e:
+			out = append(out, 0x7d, 0x02)
+		case 0x7d:
+			out = append(out, 0x7d, 0x01)
+		default:
+			out = append(out, value)
+		}
+	}
+	out = append(out, 0x7e)
+	return out
+}
--- a/go/vehicle-gateway/internal/protocol/yutongmqtt/parser.go
+++ b/go/vehicle-gateway/internal/protocol/yutongmqtt/parser.go
@@ -69,7 +69,7 @@ func fieldsFromData(data map[string]any) map[string]any {
 		fields[envelope.FieldSpeedKMH] = speed
 	}
 	if mileage, ok := firstFloat(data, "TOTAL_MILEAGE", "totalMileage", "total_mileage_km"); ok {
-		fields[envelope.FieldTotalMileageKM] = mileage
+		fields[envelope.FieldTotalMileageKM] = normalizeTotalMileageKM(mileage)
 	}
 	if soc, ok := firstFloat(data, "BATTERY_CAPACITY_SOC", "soc", "SOC", "soc_percent"); ok {
 		fields[envelope.FieldSOCPercent] = soc
@@ -166,6 +166,14 @@ func parseTimeMS(raw string, fallback int64) int64 {
 	if raw == "" {
 		return fallback
 	}
+	for _, layout := range []string{
+		"2006-01-02 15:04:05.000",
+		"2006-01-02 15:04:05",
+	} {
+		if parsed, err := time.ParseInLocation(layout, raw, time.FixedZone("Asia/Shanghai", 8*3600)); err == nil {
+			return parsed.UnixMilli()
+		}
+	}
 	if len(raw) == 14 {
 		if parsed, err := time.ParseInLocation("20060102150405", raw, time.FixedZone("Asia/Shanghai", 8*3600)); err == nil {
 			return parsed.UnixMilli()
@@ -187,3 +195,7 @@ func looksLikeVIN(value string) bool {
 	value = strings.TrimSpace(value)
 	return len(value) == 17
 }
+
+func normalizeTotalMileageKM(value float64) float64 {
+	return value / 1000
+}
--- a/go/vehicle-gateway/internal/protocol/yutongmqtt/parser_test.go
+++ b/go/vehicle-gateway/internal/protocol/yutongmqtt/parser_test.go
@@ -36,7 +36,7 @@ func TestParseMessageMapsYutongPayloadToEnvelope(t *testing.T) {
 		t.Fatalf("plate = %q", env.Plate)
 	}
 	assertFloatField(t, env, envelope.FieldSpeedKMH, 52.3)
-	assertFloatField(t, env, envelope.FieldTotalMileageKM, 123456.7)
+	assertFloatField(t, env, envelope.FieldTotalMileageKM, 123.4567)
 	assertFloatField(t, env, envelope.FieldSOCPercent, 70)
 	assertFloatField(t, env, envelope.FieldLongitude, 116.397128)
 	assertFloatField(t, env, envelope.FieldLatitude, 39.916527)
@@ -64,6 +64,35 @@ func TestParseMessageUsesDeviceAsVehicleKeyWhenNotVIN(t *testing.T) {
 	assertFloatField(t, env, envelope.FieldSpeedKMH, 12.3)
 }

+func TestParseMessageNormalizesProductionMileageMeters(t *testing.T) {
+	payload := []byte(`{
+	  "device":"LMRKH9AC3R1004101",
+	  "time":"2026-07-02 01:02:04.085",
+	  "data":{"TOTAL_MILEAGE":56905000,"METER_SPEED":19}
+	}`)
+	env, err := ParseMessage("yutong", "/ytforward/shln/1", payload, 1782940000000)
+	if err != nil {
+		t.Fatalf("ParseMessage() error = %v", err)
+	}
+	assertFloatField(t, env, envelope.FieldTotalMileageKM, 56905)
+	if env.EventTimeMS != 1782925324085 {
+		t.Fatalf("event time = %d, want 1782925324085", env.EventTimeMS)
+	}
+}
+
+func TestParseMessageTreatsSmallYutongMileageAsMeters(t *testing.T) {
+	payload := []byte(`{
+	  "device":"LMRKH9AC3R1004101",
+	  "time":"2026-07-02 01:02:04.085",
+	  "data":{"TOTAL_MILEAGE":1024,"METER_SPEED":19}
+	}`)
+	env, err := ParseMessage("yutong", "/ytforward/shln/1", payload, 1782940000000)
+	if err != nil {
+		t.Fatalf("ParseMessage() error = %v", err)
+	}
+	assertFloatField(t, env, envelope.FieldTotalMileageKM, 1.024)
+}
+
 func TestParseMessageRejectsMalformedJSON(t *testing.T) {
 	_, err := ParseMessage("endpoint-a", "/bad", []byte("{bad-json"), 1782745114999)
 	if !errors.Is(err, ErrInvalidJSON) {
--- a/go/vehicle-gateway/internal/realtime/model.go
+++ b/go/vehicle-gateway/internal/realtime/model.go
@@ -7,18 +7,21 @@ import (
 )

 type Snapshot struct {
-	VIN            string            `json:"vin"`
-	Protocol       envelope.Protocol `json:"protocol,omitempty"`
-	EventID        string            `json:"event_id,omitempty"`
-	EventTimeMS    int64             `json:"event_time_ms"`
-	ReceivedAtMS   int64             `json:"received_at_ms"`
-	SourceEndpoint string            `json:"source_endpoint,omitempty"`
-	Fields         map[string]any    `json:"fields,omitempty"`
-	FieldTimesMS   map[string]int64  `json:"field_times_ms,omitempty"`
-	UpdatedAtMS    int64             `json:"updated_at_ms"`
+	VehicleKey     string              `json:"vehicle_key"`
+	VIN            string              `json:"vin"`
+	Protocol       envelope.Protocol   `json:"protocol,omitempty"`
+	Protocols      []envelope.Protocol `json:"protocols,omitempty"`
+	EventID        string              `json:"event_id,omitempty"`
+	EventTimeMS    int64               `json:"event_time_ms"`
+	ReceivedAtMS   int64               `json:"received_at_ms"`
+	SourceEndpoint string              `json:"source_endpoint,omitempty"`
+	Fields         map[string]any      `json:"fields,omitempty"`
+	FieldTimesMS   map[string]int64    `json:"field_times_ms,omitempty"`
+	UpdatedAtMS    int64               `json:"updated_at_ms"`
 }

 type OnlineStatus struct {
+	VehicleKey string              `json:"vehicle_key"`
 	VIN        string              `json:"vin"`
 	Online     bool                `json:"online"`
 	LastSeenMS int64               `json:"last_seen_ms"`
--- a/go/vehicle-gateway/internal/realtime/repository.go
+++ b/go/vehicle-gateway/internal/realtime/repository.go
@@ -28,7 +28,8 @@ func NewRepository(client *redis.Client, cfg Config) *Repository {

 func (r *Repository) Update(ctx context.Context, env envelope.FrameEnvelope) error {
 	vin := strings.TrimSpace(env.VIN)
-	if vin == "" {
+	vehicleKey := strings.TrimSpace(env.VehicleKey())
+	if vehicleKey == "" || strings.HasSuffix(vehicleKey, ":unknown") {
 		return nil
 	}
 	nowMS := time.Now().UnixMilli()
@@ -37,6 +38,7 @@ func (r *Repository) Update(ctx context.Context, env envelope.FrameEnvelope) err
 		eventMS = env.ReceivedAtMS
 	}
 	protocolSnapshot := Snapshot{
+		VehicleKey:     vehicleKey,
 		VIN:            vin,
 		Protocol:       env.Protocol,
 		EventID:        env.StableEventID(),
@@ -47,16 +49,23 @@ func (r *Repository) Update(ctx context.Context, env envelope.FrameEnvelope) err
 		FieldTimesMS:   fieldTimes(env.Fields, eventMS),
 		UpdatedAtMS:    nowMS,
 	}
-	if err := r.setJSON(ctx, protocolKey(vin, env.Protocol), protocolSnapshot, r.cfg.ttl()); err != nil {
+	if err := r.setJSON(ctx, protocolKey(vehicleKey, env.Protocol), protocolSnapshot, r.cfg.ttl()); err != nil {
 		return err
 	}

-	merged, err := r.GetMerged(ctx, vin)
+	protocols, err := r.addProtocol(ctx, vehicleKey, env.Protocol)
+	if err != nil {
+		return err
+	}
+
+	merged, err := r.GetMerged(ctx, vehicleKey)
 	if err != nil && !errors.Is(err, redis.Nil) {
 		return err
 	}
-	if merged.VIN == "" {
-		merged = Snapshot{VIN: vin, Fields: map[string]any{}, FieldTimesMS: map[string]int64{}}
+	if merged.VehicleKey == "" {
+		merged = Snapshot{VehicleKey: vehicleKey, VIN: vin, Fields: map[string]any{}, FieldTimesMS: map[string]int64{}}
+	} else if merged.VIN == "" && vin != "" {
+		merged.VIN = vin
 	}
 	mergeFields(&merged, env.Fields, eventMS)
 	if eventMS >= merged.EventTimeMS {
@@ -65,49 +74,48 @@ func (r *Repository) Update(ctx context.Context, env envelope.FrameEnvelope) err
 		merged.ReceivedAtMS = env.ReceivedAtMS
 		merged.SourceEndpoint = env.SourceEndpoint
 	}
+	merged.Protocols = protocols
 	merged.UpdatedAtMS = nowMS
-	if err := r.setJSON(ctx, mergedKey(vin), merged, r.cfg.ttl()); err != nil {
+	if err := r.setJSON(ctx, mergedKey(vehicleKey), merged, r.cfg.ttl()); err != nil {
 		return err
 	}

-	protocols, err := r.addProtocol(ctx, vin, env.Protocol)
-	if err != nil {
-		return err
-	}
 	online := OnlineStatus{
+		VehicleKey: vehicleKey,
 		VIN:        vin,
 		Online:     true,
 		LastSeenMS: env.ReceivedAtMS,
 		Protocols:  protocols,
 		TTLSeconds: int64(r.cfg.ttl().Seconds()),
 	}
-	if err := r.setJSON(ctx, onlineKey(vin), online, r.cfg.ttl()); err != nil {
+	if err := r.setJSON(ctx, onlineKey(vehicleKey), online, r.cfg.ttl()); err != nil {
 		return err
 	}
-	return r.client.ZAdd(ctx, "vehicle:last_seen", redis.Z{Score: float64(env.ReceivedAtMS), Member: vin}).Err()
+	return r.client.ZAdd(ctx, "vehicle:last_seen", redis.Z{Score: float64(env.ReceivedAtMS), Member: vehicleKey}).Err()
 }

-func (r *Repository) GetMerged(ctx context.Context, vin string) (Snapshot, error) {
-	return r.getSnapshot(ctx, mergedKey(vin))
+func (r *Repository) GetMerged(ctx context.Context, vehicleKey string) (Snapshot, error) {
+	return r.getSnapshot(ctx, mergedKey(vehicleKey))
 }

-func (r *Repository) GetProtocol(ctx context.Context, vin string, protocol envelope.Protocol) (Snapshot, error) {
-	return r.getSnapshot(ctx, protocolKey(vin, protocol))
+func (r *Repository) GetProtocol(ctx context.Context, vehicleKey string, protocol envelope.Protocol) (Snapshot, error) {
+	return r.getSnapshot(ctx, protocolKey(vehicleKey, protocol))
 }

-func (r *Repository) IsOnline(ctx context.Context, vin string) (OnlineStatus, error) {
+func (r *Repository) IsOnline(ctx context.Context, vehicleKey string) (OnlineStatus, error) {
+	vehicleKey = strings.TrimSpace(vehicleKey)
 	var status OnlineStatus
-	payload, err := r.client.Get(ctx, onlineKey(vin)).Bytes()
+	payload, err := r.client.Get(ctx, onlineKey(vehicleKey)).Bytes()
 	if err != nil {
 		if errors.Is(err, redis.Nil) {
-			return OnlineStatus{VIN: vin, Online: false}, nil
+			return OnlineStatus{VehicleKey: vehicleKey, VIN: vehicleKey, Online: false}, nil
 		}
 		return status, err
 	}
 	if err := json.Unmarshal(payload, &status); err != nil {
 		return status, err
 	}
-	ttl := r.client.TTL(ctx, onlineKey(vin)).Val()
+	ttl := r.client.TTL(ctx, onlineKey(vehicleKey)).Val()
 	status.Online = ttl > 0
 	status.TTLSeconds = int64(ttl.Seconds())
 	return status, nil
@@ -130,8 +138,8 @@ func (r *Repository) setJSON(ctx context.Context, key string, value any, ttl tim
 	return r.client.Set(ctx, key, payload, ttl).Err()
 }

-func (r *Repository) addProtocol(ctx context.Context, vin string, protocol envelope.Protocol) ([]envelope.Protocol, error) {
-	key := protocolsKey(vin)
+func (r *Repository) addProtocol(ctx context.Context, vehicleKey string, protocol envelope.Protocol) ([]envelope.Protocol, error) {
+	key := protocolsKey(vehicleKey)
 	if err := r.client.SAdd(ctx, key, string(protocol)).Err(); err != nil {
 		return nil, err
 	}
@@ -207,18 +215,18 @@ func fieldTimes(fields map[string]any, eventMS int64) map[string]int64 {
 	return out
 }

-func mergedKey(vin string) string {
-	return "vehicle:latest:" + strings.TrimSpace(vin)
+func mergedKey(vehicleKey string) string {
+	return "vehicle:latest:" + strings.TrimSpace(vehicleKey)
 }

-func protocolKey(vin string, protocol envelope.Protocol) string {
-	return "vehicle:latest:" + strings.TrimSpace(vin) + ":" + string(protocol)
+func protocolKey(vehicleKey string, protocol envelope.Protocol) string {
+	return "vehicle:latest:" + strings.TrimSpace(vehicleKey) + ":" + string(protocol)
 }

-func onlineKey(vin string) string {
-	return "vehicle:online:" + strings.TrimSpace(vin)
+func onlineKey(vehicleKey string) string {
+	return "vehicle:online:" + strings.TrimSpace(vehicleKey)
 }

-func protocolsKey(vin string) string {
-	return "vehicle:protocols:" + strings.TrimSpace(vin)
+func protocolsKey(vehicleKey string) string {
+	return "vehicle:protocols:" + strings.TrimSpace(vehicleKey)
 }
--- a/go/vehicle-gateway/internal/realtime/repository_test.go
+++ b/go/vehicle-gateway/internal/realtime/repository_test.go
@@ -54,6 +54,9 @@ func TestRepositoryUpdatesMergedAndProtocolSnapshots(t *testing.T) {
 	if merged.Fields[envelope.FieldLatitude] != 30.5 {
 		t.Fatalf("new latitude missing: %#v", merged.Fields)
 	}
+	if got := protocolNames(merged.Protocols); strings.Join(got, ",") != "GB32960,JT808" {
+		t.Fatalf("merged protocols = %#v", got)
+	}
 	protocol, err := repo.GetProtocol(ctx, "VIN001", envelope.ProtocolJT808)
 	if err != nil {
 		t.Fatalf("GetProtocol() error = %v", err)
@@ -94,6 +97,44 @@ func TestRepositoryOnlineStatus(t *testing.T) {
 	}
 }

+func TestRepositoryUpdatesPhoneOnlyVehicleKey(t *testing.T) {
+	repo, closeFn := newTestRepository(t)
+	defer closeFn()
+	ctx := context.Background()
+
+	if err := repo.Update(ctx, envelope.FrameEnvelope{
+		Protocol:     envelope.ProtocolJT808,
+		Phone:        "013307811170",
+		EventTimeMS:  1000,
+		ReceivedAtMS: 1100,
+		Fields: map[string]any{
+			envelope.FieldSpeedKMH:       23.0,
+			envelope.FieldTotalMileageKM: 10003.7,
+		},
+	}); err != nil {
+		t.Fatalf("Update() error = %v", err)
+	}
+
+	vehicleKey := "JT808:013307811170"
+	merged, err := repo.GetMerged(ctx, vehicleKey)
+	if err != nil {
+		t.Fatalf("GetMerged() error = %v", err)
+	}
+	if merged.VehicleKey != vehicleKey || merged.VIN != "" {
+		t.Fatalf("unexpected identity: %#v", merged)
+	}
+	if merged.Fields[envelope.FieldTotalMileageKM] != 10003.7 {
+		t.Fatalf("merged fields = %#v", merged.Fields)
+	}
+	status, err := repo.IsOnline(ctx, vehicleKey)
+	if err != nil {
+		t.Fatalf("IsOnline() error = %v", err)
+	}
+	if !status.Online || status.VehicleKey != vehicleKey {
+		t.Fatalf("online status = %#v", status)
+	}
+}
+
 func TestRepositoryDoesNotOverwritePositiveMileageWithZero(t *testing.T) {
 	repo, closeFn := newTestRepository(t)
 	defer closeFn()
@@ -159,6 +200,30 @@ func TestHandlerReturnsMergedSnapshot(t *testing.T) {
 	}
 }

+func TestHandlerReturnsPhoneOnlyVehicleKeySnapshot(t *testing.T) {
+	repo, closeFn := newTestRepository(t)
+	defer closeFn()
+	if err := repo.Update(context.Background(), envelope.FrameEnvelope{
+		Protocol:     envelope.ProtocolJT808,
+		Phone:        "013307811170",
+		EventTimeMS:  1000,
+		ReceivedAtMS: 1100,
+		Fields:       map[string]any{envelope.FieldSpeedKMH: 12.3},
+	}); err != nil {
+		t.Fatalf("Update() error = %v", err)
+	}
+
+	req := httptest.NewRequest(http.MethodGet, "/api/realtime/vehicles/JT808:013307811170", nil)
+	rec := httptest.NewRecorder()
+	NewHandler(repo).ServeHTTP(rec, req)
+	if rec.Code != http.StatusOK {
+		t.Fatalf("status = %d body=%s", rec.Code, rec.Body.String())
+	}
+	if !stringsContains(rec.Body.String(), `"vehicle_key":"JT808:013307811170"`) {
+		t.Fatalf("unexpected body: %s", rec.Body.String())
+	}
+}
+
 func newTestRepository(t *testing.T) (*Repository, func()) {
 	t.Helper()
 	server, err := miniredis.Run()
@@ -175,3 +240,11 @@ func newTestRepository(t *testing.T) (*Repository, func()) {
 func stringsContains(value string, pattern string) bool {
 	return strings.Contains(value, pattern)
 }
+
+func protocolNames(protocols []envelope.Protocol) []string {
+	names := make([]string, 0, len(protocols))
+	for _, protocol := range protocols {
+		names = append(names, string(protocol))
+	}
+	return names
+}
--- a/go/vehicle-gateway/internal/stats/daily_metric.go
+++ b/go/vehicle-gateway/internal/stats/daily_metric.go
@@ -26,6 +26,7 @@ type Writer struct {
 }

 type MetricSample struct {
+	VehicleKey     string
 	VIN            string
 	Protocol       envelope.Protocol
 	StatDate       string
@@ -45,8 +46,13 @@ func NewWriter(exec Execer, loc *time.Location) *Writer {
 }

 func (w *Writer) EnsureSchema(ctx context.Context) error {
-	_, err := w.exec.ExecContext(ctx, DailyMetricTableSQL)
-	return err
+	if _, err := w.exec.ExecContext(ctx, DailyMetricTableSQL); err != nil {
+		return err
+	}
+	if db, ok := w.exec.(metadataDB); ok {
+		return migrateDailyMetricTable(ctx, db)
+	}
+	return nil
 }

 func (w *Writer) Append(ctx context.Context, env envelope.FrameEnvelope) error {
@@ -56,6 +62,7 @@ func (w *Writer) Append(ctx context.Context, env envelope.FrameEnvelope) error {
 	}
 	for _, sample := range samples {
 		if _, err := w.exec.ExecContext(ctx, upsertDailyMetricSQL,
+			sample.VehicleKey,
 			sample.VIN,
 			sample.StatDate,
 			string(sample.Protocol),
@@ -71,7 +78,8 @@ func (w *Writer) Append(ctx context.Context, env envelope.FrameEnvelope) error {

 func SamplesFromEnvelope(env envelope.FrameEnvelope, loc *time.Location) ([]MetricSample, error) {
 	vin := strings.TrimSpace(env.VIN)
-	if vin == "" {
+	vehicleKey := strings.TrimSpace(env.VehicleKey())
+	if vehicleKey == "" || strings.HasSuffix(vehicleKey, ":unknown") {
 		return nil, nil
 	}
 	totalMileage, ok := floatField(env, envelope.FieldTotalMileageKM)
@@ -94,6 +102,7 @@ func SamplesFromEnvelope(env envelope.FrameEnvelope, loc *time.Location) ([]Metr
 	statDate := time.UnixMilli(eventMS).In(loc).Format("2006-01-02")
 	return []MetricSample{
 		{
+			VehicleKey:     vehicleKey,
 			VIN:            vin,
 			Protocol:       env.Protocol,
 			StatDate:       statDate,
@@ -102,6 +111,7 @@ func SamplesFromEnvelope(env envelope.FrameEnvelope, loc *time.Location) ([]Metr
 			TotalMileageKM: totalMileage,
 		},
 		{
+			VehicleKey:     vehicleKey,
 			VIN:            vin,
 			Protocol:       env.Protocol,
 			StatDate:       statDate,
@@ -114,10 +124,11 @@ func SamplesFromEnvelope(env envelope.FrameEnvelope, loc *time.Location) ([]Metr

 const upsertDailyMetricSQL = `
 INSERT INTO vehicle_daily_metric
-  (vin, stat_date, protocol, metric_key, metric_value, metric_unit,
+  (vehicle_key, vin, stat_date, protocol, metric_key, metric_value, metric_unit,
   first_total_mileage_km, latest_total_mileage_km, sample_count, calculation_method)
-VALUES (?, ?, ?, ?, ?, 'km', ?, ?, 1, 'TOTAL_MILEAGE_DIFF')
+VALUES (?, ?, ?, ?, ?, ?, 'km', ?, ?, 1, 'TOTAL_MILEAGE_DIFF')
 ON DUPLICATE KEY UPDATE
+  vin = IF(VALUES(vin) <> '', VALUES(vin), vin),
  first_total_mileage_km = CASE
    WHEN first_total_mileage_km IS NULL OR first_total_mileage_km <= 0
      THEN VALUES(first_total_mileage_km)
@@ -158,6 +169,82 @@ ON DUPLICATE KEY UPDATE
  updated_at = CURRENT_TIMESTAMP
 `

+type metadataDB interface {
+	Execer
+	QueryRowContext(context.Context, string, ...any) *sql.Row
+}
+
+func migrateDailyMetricTable(ctx context.Context, db metadataDB) error {
+	columnExists, err := informationSchemaExists(ctx, db, `
+SELECT COUNT(*)
+FROM information_schema.columns
+WHERE table_schema = DATABASE()
+  AND table_name = 'vehicle_daily_metric'
+  AND column_name = 'vehicle_key'`)
+	if err != nil {
+		return err
+	}
+	if !columnExists {
+		if _, err := db.ExecContext(ctx, `ALTER TABLE vehicle_daily_metric ADD COLUMN vehicle_key VARCHAR(96) NOT NULL DEFAULT '' AFTER id`); err != nil {
+			return err
+		}
+	}
+	if _, err := db.ExecContext(ctx, `UPDATE vehicle_daily_metric SET vehicle_key = vin WHERE vehicle_key = ''`); err != nil {
+		return err
+	}
+	vehicleIndexExists, err := informationSchemaExists(ctx, db, `
+SELECT COUNT(*)
+FROM information_schema.statistics
+WHERE table_schema = DATABASE()
+  AND table_name = 'vehicle_daily_metric'
+  AND index_name = 'uk_daily_metric_vehicle'`)
+	if err != nil {
+		return err
+	}
+	if !vehicleIndexExists {
+		if _, err := db.ExecContext(ctx, `ALTER TABLE vehicle_daily_metric ADD UNIQUE KEY uk_daily_metric_vehicle (vehicle_key, stat_date, protocol, metric_key)`); err != nil {
+			return err
+		}
+	}
+	oldIndexExists, err := informationSchemaExists(ctx, db, `
+SELECT COUNT(*)
+FROM information_schema.statistics
+WHERE table_schema = DATABASE()
+  AND table_name = 'vehicle_daily_metric'
+  AND index_name = 'uk_daily_metric'`)
+	if err != nil {
+		return err
+	}
+	if oldIndexExists {
+		if _, err := db.ExecContext(ctx, `ALTER TABLE vehicle_daily_metric DROP INDEX uk_daily_metric`); err != nil {
+			return err
+		}
+	}
+	vinIndexExists, err := informationSchemaExists(ctx, db, `
+SELECT COUNT(*)
+FROM information_schema.statistics
+WHERE table_schema = DATABASE()
+  AND table_name = 'vehicle_daily_metric'
+  AND index_name = 'idx_vin'`)
+	if err != nil {
+		return err
+	}
+	if !vinIndexExists {
+		if _, err := db.ExecContext(ctx, `ALTER TABLE vehicle_daily_metric ADD KEY idx_vin (vin)`); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func informationSchemaExists(ctx context.Context, db metadataDB, query string) (bool, error) {
+	var count int
+	if err := db.QueryRowContext(ctx, query).Scan(&count); err != nil {
+		return false, err
+	}
+	return count > 0, nil
+}
+
 func floatField(env envelope.FrameEnvelope, key string) (float64, bool) {
 	if env.Fields == nil {
 		return 0, false
--- a/go/vehicle-gateway/internal/stats/daily_metric_test.go
+++ b/go/vehicle-gateway/internal/stats/daily_metric_test.go
@@ -31,6 +31,9 @@ func TestSamplesFromEnvelopeDerivesDailyMileageAndTotal(t *testing.T) {
 	if samples[0].MetricKey != MetricDailyMileageKM || samples[0].MetricValue != 0 {
 		t.Fatalf("unexpected daily mileage sample: %#v", samples[0])
 	}
+	if samples[0].VehicleKey != "LNBVIN00000000001" {
+		t.Fatalf("vehicle key = %q", samples[0].VehicleKey)
+	}
 	if samples[1].MetricKey != MetricDailyTotalMileageKM || samples[1].MetricValue != 10241.2 {
 		t.Fatalf("unexpected daily total sample: %#v", samples[1])
 	}
@@ -39,7 +42,31 @@ func TestSamplesFromEnvelopeDerivesDailyMileageAndTotal(t *testing.T) {
 	}
 }

-func TestSamplesFromEnvelopeSkipsMissingVINOrMileage(t *testing.T) {
+func TestSamplesFromEnvelopeUsesVehicleKeyWhenVINIsMissing(t *testing.T) {
+	loc := time.FixedZone("Asia/Shanghai", 8*3600)
+	samples, err := SamplesFromEnvelope(envelope.FrameEnvelope{
+		Protocol:    envelope.ProtocolJT808,
+		Phone:       "013307811254",
+		EventTimeMS: time.Date(2026, 7, 2, 0, 3, 0, 0, loc).UnixMilli(),
+		Fields: map[string]any{
+			envelope.FieldTotalMileageKM: 10985.7,
+		},
+	}, loc)
+	if err != nil {
+		t.Fatalf("SamplesFromEnvelope() error = %v", err)
+	}
+	if len(samples) != 2 {
+		t.Fatalf("sample count = %d", len(samples))
+	}
+	if samples[0].VehicleKey != "JT808:013307811254" {
+		t.Fatalf("vehicle key = %q", samples[0].VehicleKey)
+	}
+	if samples[0].VIN != "" {
+		t.Fatalf("vin should stay empty for unresolved JT808 identity, got %q", samples[0].VIN)
+	}
+}
+
+func TestSamplesFromEnvelopeSkipsMissingVehicleKeyOrMileage(t *testing.T) {
 	samples, err := SamplesFromEnvelope(envelope.FrameEnvelope{
 		Protocol: envelope.ProtocolJT808,
 		Fields:   map[string]any{envelope.FieldTotalMileageKM: 1.2},
@@ -48,7 +75,7 @@ func TestSamplesFromEnvelopeSkipsMissingVINOrMileage(t *testing.T) {
 		t.Fatalf("SamplesFromEnvelope() error = %v", err)
 	}
 	if len(samples) != 0 {
-		t.Fatalf("expected no samples without vin, got %#v", samples)
+		t.Fatalf("expected no samples without vehicle key, got %#v", samples)
 	}

 	samples, err = SamplesFromEnvelope(envelope.FrameEnvelope{
@@ -103,6 +130,9 @@ func TestWriterEnsuresSchemaAndUpsertsTwoMetrics(t *testing.T) {
 	if !strings.Contains(exec.calls[0].query, "CREATE TABLE IF NOT EXISTS vehicle_daily_metric") {
 		t.Fatalf("unexpected schema sql: %s", exec.calls[0].query)
 	}
+	if !strings.Contains(exec.calls[0].query, "vehicle_key") {
+		t.Fatalf("schema should include vehicle_key: %s", exec.calls[0].query)
+	}
 	if len(exec.calls) != 3 {
 		t.Fatalf("exec calls = %d", len(exec.calls))
 	}
@@ -112,6 +142,9 @@ func TestWriterEnsuresSchemaAndUpsertsTwoMetrics(t *testing.T) {
 	if !strings.Contains(exec.calls[1].query, "first_total_mileage_km <= 0") {
 		t.Fatalf("upsert should ignore legacy zero first mileage: %s", exec.calls[1].query)
 	}
+	if got := exec.calls[1].args[0]; got != "LNBVIN00000000002" {
+		t.Fatalf("first upsert arg should be vehicle_key, got %#v", got)
+	}
 }

 type execCall struct {
--- a/go/vehicle-gateway/internal/stats/query.go
+++ b/go/vehicle-gateway/internal/stats/query.go
@@ -17,16 +17,18 @@ type Queryer interface {
 }

 type MetricQuery struct {
-	VIN       string
-	Protocol  string
-	MetricKey string
-	DateFrom  string
-	DateTo    string
-	Limit     int
-	Offset    int
+	VehicleKey string
+	VIN        string
+	Protocol   string
+	MetricKey  string
+	DateFrom   string
+	DateTo     string
+	Limit      int
+	Offset     int
 }

 type MetricRow struct {
+	VehicleKey           string   `json:"vehicle_key"`
 	VIN                  string   `json:"vin"`
 	StatDate             string   `json:"stat_date"`
 	Protocol             string   `json:"protocol"`
@@ -61,7 +63,7 @@ func (r *MetricRepository) Query(ctx context.Context, query MetricQuery) ([]Metr
 	}
 	defer rows.Close()

-	var out []MetricRow
+	out := make([]MetricRow, 0)
 	for rows.Next() {
 		var row MetricRow
 		var statDate scanDate
@@ -70,6 +72,7 @@ func (r *MetricRepository) Query(ctx context.Context, query MetricQuery) ([]Metr
 		var first sql.NullFloat64
 		var latest sql.NullFloat64
 		if err := rows.Scan(
+			&row.VehicleKey,
 			&row.VIN,
 			&statDate,
 			&row.Protocol,
@@ -99,7 +102,26 @@ func (r *MetricRepository) Query(ctx context.Context, query MetricQuery) ([]Metr
 	return out, rows.Err()
 }

+func (r *MetricRepository) Count(ctx context.Context, query MetricQuery) (int64, error) {
+	query = normalizeMetricQuery(query)
+	sqlText, args := buildMetricCountSQL(query)
+	rows, err := r.db.QueryContext(ctx, sqlText, args...)
+	if err != nil {
+		return 0, err
+	}
+	defer rows.Close()
+
+	var total int64
+	if rows.Next() {
+		if err := rows.Scan(&total); err != nil {
+			return 0, err
+		}
+	}
+	return total, rows.Err()
+}
+
 func normalizeMetricQuery(query MetricQuery) MetricQuery {
+	query.VehicleKey = strings.TrimSpace(query.VehicleKey)
 	query.VIN = strings.TrimSpace(query.VIN)
 	query.Protocol = strings.ToUpper(strings.TrimSpace(query.Protocol))
 	query.MetricKey = strings.TrimSpace(query.MetricKey)
@@ -112,6 +134,26 @@ func normalizeMetricQuery(query MetricQuery) MetricQuery {
 }

 func buildMetricSQL(query MetricQuery) (string, []any) {
+	where, args := buildMetricWhere(query)
+	sqlText := `SELECT vehicle_key, vin, stat_date, protocol, metric_key, metric_value, metric_unit, first_total_mileage_km, latest_total_mileage_km, sample_count, calculation_method, created_at, updated_at FROM vehicle_daily_metric`
+	if len(where) > 0 {
+		sqlText += " WHERE " + strings.Join(where, " AND ")
+	}
+	sqlText += " ORDER BY stat_date DESC, vehicle_key ASC, protocol ASC, metric_key ASC LIMIT ? OFFSET ?"
+	args = append(args, query.Limit, query.Offset)
+	return sqlText, args
+}
+
+func buildMetricCountSQL(query MetricQuery) (string, []any) {
+	where, args := buildMetricWhere(query)
+	sqlText := `SELECT COUNT(*) FROM vehicle_daily_metric`
+	if len(where) > 0 {
+		sqlText += " WHERE " + strings.Join(where, " AND ")
+	}
+	return sqlText, args
+}
+
+func buildMetricWhere(query MetricQuery) ([]string, []any) {
 	var where []string
 	var args []any
 	add := func(clause string, value any) {
@@ -121,6 +163,9 @@ func buildMetricSQL(query MetricQuery) (string, []any) {
 	if query.VIN != "" {
 		add("vin = ?", query.VIN)
 	}
+	if query.VehicleKey != "" {
+		add("vehicle_key = ?", query.VehicleKey)
+	}
 	if query.Protocol != "" {
 		add("protocol = ?", query.Protocol)
 	}
@@ -133,13 +178,7 @@ func buildMetricSQL(query MetricQuery) (string, []any) {
 	if query.DateTo != "" {
 		add("stat_date <= ?", query.DateTo)
 	}
-	sqlText := `SELECT vin, stat_date, protocol, metric_key, metric_value, metric_unit, first_total_mileage_km, latest_total_mileage_km, sample_count, calculation_method, created_at, updated_at FROM vehicle_daily_metric`
-	if len(where) > 0 {
-		sqlText += " WHERE " + strings.Join(where, " AND ")
-	}
-	sqlText += " ORDER BY stat_date DESC, vin ASC, protocol ASC, metric_key ASC LIMIT ? OFFSET ?"
-	args = append(args, query.Limit, query.Offset)
-	return sqlText, args
+	return where, args
 }

 type MetricHandler struct {
@@ -167,6 +206,11 @@ func (h *MetricHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		writeMetricError(w, http.StatusBadRequest, err.Error())
 		return
 	}
+	total, err := h.repository.Count(r.Context(), query)
+	if err != nil {
+		writeMetricError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
 	rows, err := h.repository.Query(r.Context(), query)
 	if err != nil {
 		writeMetricError(w, http.StatusInternalServerError, err.Error())
@@ -175,7 +219,7 @@ func (h *MetricHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Content-Type", "application/json")
 	_ = json.NewEncoder(w).Encode(map[string]any{
 		"items":  rows,
-		"total":  len(rows),
+		"total":  total,
 		"limit":  query.Limit,
 		"offset": query.Offset,
 	})
@@ -192,13 +236,14 @@ func parseMetricQuery(r *http.Request) (MetricQuery, error) {
 		return MetricQuery{}, err
 	}
 	query := MetricQuery{
-		VIN:       values.Get("vin"),
-		Protocol:  values.Get("protocol"),
-		MetricKey: values.Get("metricKey"),
-		DateFrom:  values.Get("dateFrom"),
-		DateTo:    values.Get("dateTo"),
-		Limit:     limit,
-		Offset:    offset,
+		VehicleKey: values.Get("vehicleKey"),
+		VIN:        values.Get("vin"),
+		Protocol:   values.Get("protocol"),
+		MetricKey:  values.Get("metricKey"),
+		DateFrom:   values.Get("dateFrom"),
+		DateTo:     values.Get("dateTo"),
+		Limit:      limit,
+		Offset:     offset,
 	}
 	if !validDate(query.DateFrom) || !validDate(query.DateTo) {
 		return MetricQuery{}, errors.New("dateFrom/dateTo must use YYYY-MM-DD")
--- a/go/vehicle-gateway/internal/stats/query_test.go
+++ b/go/vehicle-gateway/internal/stats/query_test.go
@@ -18,14 +18,14 @@ func TestMetricRepositoryQueriesDailyMetricsWithFilters(t *testing.T) {
 		t.Fatalf("sqlmock.New() error = %v", err)
 	}
 	defer db.Close()
-	mock.ExpectQuery("SELECT vin, stat_date, protocol, metric_key, metric_value, metric_unit, first_total_mileage_km, latest_total_mileage_km, sample_count, calculation_method, created_at, updated_at FROM vehicle_daily_metric").
+	mock.ExpectQuery("SELECT vehicle_key, vin, stat_date, protocol, metric_key, metric_value, metric_unit, first_total_mileage_km, latest_total_mileage_km, sample_count, calculation_method, created_at, updated_at FROM vehicle_daily_metric").
 		WithArgs("LKLG7C4E3NA774736", "JT808", "2026-07-01", "2026-07-01", 20, 0).
 		WillReturnRows(sqlmock.NewRows([]string{
-			"vin", "stat_date", "protocol", "metric_key", "metric_value", "metric_unit",
+			"vehicle_key", "vin", "stat_date", "protocol", "metric_key", "metric_value", "metric_unit",
 			"first_total_mileage_km", "latest_total_mileage_km", "sample_count", "calculation_method",
 			"created_at", "updated_at",
 		}).AddRow(
-			"LKLG7C4E3NA774736", time.Date(2026, 7, 1, 0, 0, 0, 0, time.FixedZone("Asia/Shanghai", 8*3600)), "JT808", MetricDailyTotalMileageKM, 12345.6, "km",
+			"LKLG7C4E3NA774736", "LKLG7C4E3NA774736", time.Date(2026, 7, 1, 0, 0, 0, 0, time.FixedZone("Asia/Shanghai", 8*3600)), "JT808", MetricDailyTotalMileageKM, 12345.6, "km",
 			12345.6, 12345.6, 13, "TOTAL_MILEAGE_DIFF", time.Date(2026, 7, 1, 22, 49, 11, 0, time.FixedZone("Asia/Shanghai", 8*3600)), time.Date(2026, 7, 1, 23, 9, 36, 0, time.FixedZone("Asia/Shanghai", 8*3600)),
 		))

@@ -46,6 +46,9 @@ func TestMetricRepositoryQueriesDailyMetricsWithFilters(t *testing.T) {
 	if rows[0].MetricKey != MetricDailyTotalMileageKM || rows[0].MetricValue != 12345.6 {
 		t.Fatalf("unexpected row: %#v", rows[0])
 	}
+	if rows[0].VehicleKey != "LKLG7C4E3NA774736" {
+		t.Fatalf("vehicle key = %q", rows[0].VehicleKey)
+	}
 	if rows[0].StatDate != "2026-07-01" || rows[0].UpdatedAt != "2026-07-01 23:09:36" {
 		t.Fatalf("unexpected time formatting: %#v", rows[0])
 	}
@@ -60,14 +63,17 @@ func TestMetricHandlerReturnsDailyMetrics(t *testing.T) {
 		t.Fatalf("sqlmock.New() error = %v", err)
 	}
 	defer db.Close()
-	mock.ExpectQuery("SELECT vin, stat_date, protocol, metric_key, metric_value, metric_unit, first_total_mileage_km, latest_total_mileage_km, sample_count, calculation_method, created_at, updated_at FROM vehicle_daily_metric").
+	mock.ExpectQuery("SELECT COUNT\\(\\*\\) FROM vehicle_daily_metric").
+		WithArgs("LB9A32A21R0LS1707", "GB32960", "2020-07-01", "2020-07-01").
+		WillReturnRows(sqlmock.NewRows([]string{"total"}).AddRow(42))
+	mock.ExpectQuery("SELECT vehicle_key, vin, stat_date, protocol, metric_key, metric_value, metric_unit, first_total_mileage_km, latest_total_mileage_km, sample_count, calculation_method, created_at, updated_at FROM vehicle_daily_metric").
 		WithArgs("LB9A32A21R0LS1707", "GB32960", "2020-07-01", "2020-07-01", 50, 0).
 		WillReturnRows(sqlmock.NewRows([]string{
-			"vin", "stat_date", "protocol", "metric_key", "metric_value", "metric_unit",
+			"vehicle_key", "vin", "stat_date", "protocol", "metric_key", "metric_value", "metric_unit",
 			"first_total_mileage_km", "latest_total_mileage_km", "sample_count", "calculation_method",
 			"created_at", "updated_at",
 		}).AddRow(
-			"LB9A32A21R0LS1707", "2020-07-01", "GB32960", MetricDailyMileageKM, 0.0, "km",
+			"LB9A32A21R0LS1707", "LB9A32A21R0LS1707", "2020-07-01", "GB32960", MetricDailyMileageKM, 0.0, "km",
 			53490.9, 53490.9, 3, "TOTAL_MILEAGE_DIFF", "2026-07-01 22:07:58", "2026-07-01 22:28:25",
 		))

@@ -81,7 +87,7 @@ func TestMetricHandlerReturnsDailyMetrics(t *testing.T) {
 		t.Fatalf("status = %d body=%s", response.Code, response.Body.String())
 	}
 	body := response.Body.String()
-	for _, want := range []string{`"vin":"LB9A32A21R0LS1707"`, `"metric_key":"daily_mileage_km"`, `"total":1`} {
+	for _, want := range []string{`"vin":"LB9A32A21R0LS1707"`, `"metric_key":"daily_mileage_km"`, `"total":42`} {
 		if !strings.Contains(body, want) {
 			t.Fatalf("response missing %s: %s", want, body)
 		}
@@ -91,6 +97,81 @@ func TestMetricHandlerReturnsDailyMetrics(t *testing.T) {
 	}
 }

+func TestMetricHandlerFiltersByVehicleKey(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("sqlmock.New() error = %v", err)
+	}
+	defer db.Close()
+	mock.ExpectQuery("SELECT COUNT\\(\\*\\) FROM vehicle_daily_metric").
+		WithArgs("JT808:013307811254", "JT808").
+		WillReturnRows(sqlmock.NewRows([]string{"total"}).AddRow(12))
+	mock.ExpectQuery("SELECT vehicle_key, vin, stat_date, protocol, metric_key, metric_value, metric_unit, first_total_mileage_km, latest_total_mileage_km, sample_count, calculation_method, created_at, updated_at FROM vehicle_daily_metric").
+		WithArgs("JT808:013307811254", "JT808", 50, 0).
+		WillReturnRows(sqlmock.NewRows([]string{
+			"vehicle_key", "vin", "stat_date", "protocol", "metric_key", "metric_value", "metric_unit",
+			"first_total_mileage_km", "latest_total_mileage_km", "sample_count", "calculation_method",
+			"created_at", "updated_at",
+		}).AddRow(
+			"JT808:013307811254", "", "2026-07-02", "JT808", MetricDailyTotalMileageKM, 10985.7, "km",
+			10985.7, 10985.7, 1, "TOTAL_MILEAGE_DIFF", "2026-07-02 00:03:00", "2026-07-02 00:03:00",
+		))
+
+	handler := NewMetricHandler(NewMetricRepository(db))
+	request := httptest.NewRequest(http.MethodGet, "/api/stats/daily-metrics?vehicleKey=JT808:013307811254&protocol=JT808", nil)
+	response := httptest.NewRecorder()
+
+	handler.ServeHTTP(response, request)
+
+	if response.Code != http.StatusOK {
+		t.Fatalf("status = %d body=%s", response.Code, response.Body.String())
+	}
+	body := response.Body.String()
+	for _, want := range []string{`"vehicle_key":"JT808:013307811254"`, `"vin":""`, `"metric_value":10985.7`} {
+		if !strings.Contains(body, want) {
+			t.Fatalf("response missing %s: %s", want, body)
+		}
+	}
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Fatalf("sql expectations: %v", err)
+	}
+}
+
+func TestMetricHandlerReturnsEmptyItemsArrayWhenNoRows(t *testing.T) {
+	db, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("sqlmock.New() error = %v", err)
+	}
+	defer db.Close()
+	mock.ExpectQuery("SELECT COUNT\\(\\*\\) FROM vehicle_daily_metric").
+		WithArgs("YUTONG_MQTT").
+		WillReturnRows(sqlmock.NewRows([]string{"total"}).AddRow(0))
+	mock.ExpectQuery("SELECT vehicle_key, vin, stat_date, protocol, metric_key, metric_value, metric_unit, first_total_mileage_km, latest_total_mileage_km, sample_count, calculation_method, created_at, updated_at FROM vehicle_daily_metric").
+		WithArgs("YUTONG_MQTT", 50, 0).
+		WillReturnRows(sqlmock.NewRows([]string{
+			"vehicle_key", "vin", "stat_date", "protocol", "metric_key", "metric_value", "metric_unit",
+			"first_total_mileage_km", "latest_total_mileage_km", "sample_count", "calculation_method",
+			"created_at", "updated_at",
+		}))
+
+	handler := NewMetricHandler(NewMetricRepository(db))
+	request := httptest.NewRequest(http.MethodGet, "/api/stats/daily-metrics?protocol=YUTONG_MQTT", nil)
+	response := httptest.NewRecorder()
+
+	handler.ServeHTTP(response, request)
+
+	if response.Code != http.StatusOK {
+		t.Fatalf("status = %d body=%s", response.Code, response.Body.String())
+	}
+	body := response.Body.String()
+	if !strings.Contains(body, `"items":[]`) || strings.Contains(body, `"items":null`) {
+		t.Fatalf("expected empty items array, got: %s", body)
+	}
+	if err := mock.ExpectationsWereMet(); err != nil {
+		t.Fatalf("sql expectations: %v", err)
+	}
+}
+
 func TestMetricHandlerRejectsInvalidPagination(t *testing.T) {
 	handler := NewMetricHandler(NewMetricRepository(&sql.DB{}))
 	request := httptest.NewRequest(http.MethodGet, "/api/stats/daily-metrics?limit=2001", nil)
--- a/go/vehicle-gateway/internal/stats/schema.go
+++ b/go/vehicle-gateway/internal/stats/schema.go
@@ -2,7 +2,8 @@ package stats

 const DailyMetricTableSQL = `CREATE TABLE IF NOT EXISTS vehicle_daily_metric (
  id BIGINT PRIMARY KEY AUTO_INCREMENT,
-  vin VARCHAR(32) NOT NULL,
+  vehicle_key VARCHAR(96) NOT NULL,
+  vin VARCHAR(32) NOT NULL DEFAULT '',
  stat_date DATE NOT NULL,
  protocol VARCHAR(32) NOT NULL,
  metric_key VARCHAR(64) NOT NULL,
@@ -14,7 +15,8 @@ const DailyMetricTableSQL = `CREATE TABLE IF NOT EXISTS vehicle_daily_metric (
  calculation_method VARCHAR(64) NOT NULL,
  created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
  updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
-  UNIQUE KEY uk_daily_metric (vin, stat_date, protocol, metric_key),
+  UNIQUE KEY uk_daily_metric_vehicle (vehicle_key, stat_date, protocol, metric_key),
+  KEY idx_vin (vin),
  KEY idx_stat_date (stat_date),
  KEY idx_protocol_metric (protocol, metric_key)
 )`
--- a/tools/go_kafka_prod_smoke.py
+++ b/tools/go_kafka_prod_smoke.py
@@ -0,0 +1,162 @@
+#!/usr/bin/env python3
+"""Kafka topic and consumer lag smoke checks for the Go native production stack."""
+
+from __future__ import annotations
+
+import argparse
+import json
+import subprocess
+import sys
+from dataclasses import asdict, dataclass
+
+
+DEFAULT_HOST = "114.55.58.251"
+DEFAULT_USER = "root"
+DEFAULT_BOOTSTRAP = "127.0.0.1:9092"
+DEFAULT_KAFKA_BIN = "/opt/kafka/current/bin"
+DEFAULT_TOPICS = [
+    "vehicle.raw.go.gb32960.v1",
+    "vehicle.raw.go.jt808.v1",
+    "vehicle.raw.go.yutong-mqtt.v1",
+    "vehicle.event.go.unified.v1",
+]
+DEFAULT_GROUPS = [
+    "go-history-writer",
+    "go-stat-writer",
+    "go-realtime-api",
+]
+
+
+@dataclass(frozen=True)
+class Check:
+    name: str
+    status: str
+    message: str
+
+
+@dataclass(frozen=True)
+class ConsumerLag:
+    group: str
+    topic: str
+    partition: int
+    current_offset: int | None
+    log_end_offset: int
+    lag: int | None
+
+
+def parse_topic_list(output: str) -> set[str]:
+    return {line.strip() for line in output.splitlines() if line.strip()}
+
+
+def topic_checks(existing: set[str], required: list[str]) -> list[Check]:
+    checks: list[Check] = []
+    for topic in required:
+        if topic in existing:
+            checks.append(Check("topic." + topic, "pass", "present"))
+        else:
+            checks.append(Check("topic." + topic, "fail", "missing"))
+    return checks
+
+
+def parse_consumer_group_describe(output: str) -> list[ConsumerLag]:
+    rows: list[ConsumerLag] = []
+    for line in output.splitlines():
+        parts = line.split()
+        if len(parts) < 6 or parts[0] == "GROUP":
+            continue
+        group, topic = parts[0], parts[1]
+        try:
+            partition = int(parts[2])
+            current = parse_optional_int(parts[3])
+            log_end = int(parts[4])
+            lag = parse_optional_int(parts[5])
+        except ValueError:
+            continue
+        rows.append(ConsumerLag(group, topic, partition, current, log_end, lag))
+    return rows
+
+
+def parse_optional_int(value: str) -> int | None:
+    value = value.strip()
+    if value == "-":
+        return None
+    return int(value)
+
+
+def group_lag_check(group: str, rows: list[ConsumerLag], max_lag: int) -> Check:
+    group_rows = [row for row in rows if row.group == group]
+    if not group_rows:
+        return Check("group." + group, "fail", "no rows")
+    concrete_lags = [row.lag for row in group_rows if row.lag is not None]
+    if not concrete_lags:
+        return Check("group." + group, "fail", "no concrete lag rows")
+    max_seen = max(concrete_lags)
+    topics = sorted({row.topic for row in group_rows})
+    status = "pass" if max_seen <= max_lag else "fail"
+    return Check(
+        "group." + group,
+        status,
+        "max_lag=" + str(max_seen) + "; threshold=" + str(max_lag) + "; topics=" + ",".join(topics),
+    )
+
+
+def ssh(host: str, user: str, command: str, timeout: float) -> str:
+    target = user + "@" + host if user else host
+    completed = subprocess.run(
+        ["ssh", "-o", "StrictHostKeyChecking=no", "-o", "UserKnownHostsFile=/dev/null", target, command],
+        check=True,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE,
+        text=True,
+        timeout=timeout,
+    )
+    return completed.stdout
+
+
+def remote_topic_command(kafka_bin: str, bootstrap: str) -> str:
+    return kafka_bin.rstrip("/") + "/kafka-topics.sh --bootstrap-server " + bootstrap + " --list"
+
+
+def remote_group_command(kafka_bin: str, bootstrap: str, group: str) -> str:
+    return kafka_bin.rstrip("/") + "/kafka-consumer-groups.sh --bootstrap-server " + bootstrap + " --describe --group " + group
+
+
+def run(args: argparse.Namespace) -> tuple[str, list[Check]]:
+    topic_output = ssh(args.host, args.user, remote_topic_command(args.kafka_bin, args.bootstrap), args.timeout)
+    checks = topic_checks(parse_topic_list(topic_output), DEFAULT_TOPICS)
+    for group in DEFAULT_GROUPS:
+        group_output = ssh(args.host, args.user, remote_group_command(args.kafka_bin, args.bootstrap, group), args.timeout)
+        checks.append(group_lag_check(group, parse_consumer_group_describe(group_output), args.max_lag))
+    status = "fail" if any(check.status == "fail" for check in checks) else "pass"
+    return status, checks
+
+
+def parse_args(argv: list[str]) -> argparse.Namespace:
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--host", default=DEFAULT_HOST)
+    parser.add_argument("--user", default=DEFAULT_USER)
+    parser.add_argument("--bootstrap", default=DEFAULT_BOOTSTRAP)
+    parser.add_argument("--kafka-bin", default=DEFAULT_KAFKA_BIN)
+    parser.add_argument("--max-lag", type=int, default=100)
+    parser.add_argument("--timeout", type=float, default=20.0)
+    return parser.parse_args(argv)
+
+
+def main(argv: list[str]) -> int:
+    args = parse_args(argv)
+    try:
+        status, checks = run(args)
+    except Exception as exc:
+        status = "fail"
+        checks = [Check("kafka.ssh", "fail", str(exc))]
+    print(json.dumps({
+        "status": status,
+        "host": args.host,
+        "bootstrap": args.bootstrap,
+        "checks": [asdict(check) for check in checks],
+    }, ensure_ascii=False, indent=2))
+    return 0 if status == "pass" else 1
+
+
+if __name__ == "__main__":
+    raise SystemExit(main(sys.argv[1:]))
--- a/tools/go_native_deploy.py
+++ b/tools/go_native_deploy.py
@@ -0,0 +1,253 @@
+#!/usr/bin/env python3
+"""Build and deploy the Go native vehicle gateway release to ECS."""
+
+from __future__ import annotations
+
+import argparse
+import os
+import pathlib
+import shutil
+import subprocess
+import sys
+import tarfile
+import tempfile
+import time
+from dataclasses import dataclass
+
+
+DEFAULT_APP_HOST = "115.29.187.205"
+DEFAULT_KAFKA_HOST = "114.55.58.251"
+DEFAULT_USER = "root"
+DEFAULT_RELEASE_ROOT = "/opt/lingniu-go-native"
+DEFAULT_GO_DIR = "go/vehicle-gateway"
+BINARIES = [
+    ("gateway", "./cmd/gateway"),
+    ("history-writer", "./cmd/history-writer"),
+    ("stat-writer", "./cmd/stat-writer"),
+    ("realtime-api", "./cmd/realtime-api"),
+]
+SERVICES = [
+    "lingniu-go-gateway",
+    "lingniu-go-history-writer",
+    "lingniu-go-stat-writer",
+    "lingniu-go-realtime-api",
+]
+
+
+@dataclass(frozen=True)
+class BuildCommand:
+    output_name: str
+    argv: list[str]
+    env: list[str]
+    cwd: str
+
+
+@dataclass(frozen=True)
+class SpoolStatus:
+    files: int
+    recent: int
+
+
+def git_short_sha(cwd: str) -> str:
+    return run_capture(["git", "rev-parse", "--short=7", "HEAD"], cwd=cwd).strip()
+
+
+def build_commands(go_dir: str, output_dir: str) -> list[BuildCommand]:
+    commands: list[BuildCommand] = []
+    env = ["CGO_ENABLED=0", "GOOS=linux", "GOARCH=amd64"]
+    for output_name, package in BINARIES:
+        commands.append(BuildCommand(
+            output_name=output_name,
+            argv=[
+                "go",
+                "build",
+                "-trimpath",
+                "-ldflags=-s -w",
+                "-o",
+                str(pathlib.Path(output_dir) / output_name),
+                package,
+            ],
+            env=env,
+            cwd=go_dir,
+        ))
+    return commands
+
+
+def build_release(go_dir: str, output_dir: str) -> None:
+    for command in build_commands(go_dir, output_dir):
+        env = os.environ.copy()
+        for item in command.env:
+            key, value = item.split("=", 1)
+            env[key] = value
+        run(command.argv, cwd=command.cwd, env=env)
+
+
+def create_archive(source_dir: str, archive_path: str) -> None:
+    with tarfile.open(archive_path, "w:gz") as archive:
+        for binary, _ in BINARIES:
+            archive.add(pathlib.Path(source_dir) / binary, arcname=binary)
+
+
+def remote_switch_command(release: str, release_root: str, remote_archive: str) -> str:
+    if not safe_release_name(release):
+        raise ValueError("release must contain only letters, numbers, dot, underscore, or dash")
+    release_dir = release_root.rstrip("/") + "/releases/" + release
+    root = release_root.rstrip("/")
+    commands = [
+        "set -euo pipefail",
+        "mkdir -p " + shell_quote(release_dir),
+        "tar -xzf " + shell_quote(remote_archive) + " -C " + shell_quote(release_dir),
+        "chmod +x " + shell_quote(release_dir) + "/*",
+        "ln -sfn " + shell_quote(release_dir) + " " + shell_quote(root + "/current"),
+        "systemctl daemon-reload",
+    ]
+    commands.extend("systemctl restart " + service for service in SERVICES)
+    commands.append("rm -f " + shell_quote(remote_archive))
+    return " && ".join(commands)
+
+
+def acceptance_command(app_host: str, kafka_host: str, date: str, timeout: float) -> list[str]:
+    command = [
+        "python3",
+        "tools/go_prod_acceptance.py",
+        "--app-host",
+        app_host,
+        "--kafka-host",
+        kafka_host,
+        "--timeout",
+        str(int(timeout) if timeout == int(timeout) else timeout),
+    ]
+    if date:
+        command.extend(["--date", date])
+    return command
+
+
+def deploy(args: argparse.Namespace) -> None:
+    repo = pathlib.Path(args.repo).resolve()
+    go_dir = str(repo / args.go_dir)
+    release = args.release or git_short_sha(str(repo))
+    with tempfile.TemporaryDirectory(prefix="lingniu-go-native-") as tmp:
+        output_dir = pathlib.Path(tmp) / "out"
+        output_dir.mkdir()
+        archive_path = pathlib.Path(tmp) / ("lingniu-go-native-" + release + ".tar.gz")
+        build_release(go_dir, str(output_dir))
+        create_archive(str(output_dir), str(archive_path))
+        remote_archive = "/tmp/" + archive_path.name
+        target = ssh_target(args.user, args.app_host)
+        run(["scp", "-o", "StrictHostKeyChecking=no", "-o", "UserKnownHostsFile=/dev/null", str(archive_path), target + ":" + remote_archive])
+        run([
+            "ssh",
+            "-o",
+            "StrictHostKeyChecking=no",
+            "-o",
+            "UserKnownHostsFile=/dev/null",
+            target,
+            remote_switch_command(release, args.release_root, remote_archive),
+        ])
+        wait_for_spool_drain(target, args.release_root, args.spool_drain_timeout, args.spool_poll_interval)
+    if not args.skip_acceptance:
+        run(acceptance_command(args.app_host, args.kafka_host, args.date, args.timeout), cwd=str(repo))
+
+
+def wait_for_spool_drain(target: str, release_root: str, timeout: float, poll_interval: float) -> None:
+    deadline = time.monotonic() + timeout
+    last = SpoolStatus(files=-1, recent=-1)
+    while time.monotonic() <= deadline:
+        output = run_capture([
+            "ssh",
+            "-o",
+            "StrictHostKeyChecking=no",
+            "-o",
+            "UserKnownHostsFile=/dev/null",
+            target,
+            spool_status_command(release_root),
+        ])
+        last = parse_spool_status(output)
+        print(f"spool files={last.files} recent={last.recent}", flush=True)
+        if last.files == 0:
+            return
+        time.sleep(max(1.0, poll_interval))
+    raise RuntimeError(f"gateway spool did not drain: files={last.files} recent={last.recent}")
+
+
+def spool_status_command(release_root: str) -> str:
+    spool_dir = release_root.rstrip("/") + "/spool/gateway"
+    return (
+        "spool=" + shell_quote(spool_dir) + "; "
+        "files=$(find \"$spool\" -type f 2>/dev/null | wc -l); "
+        "recent=$(find \"$spool\" -type f -mmin -5 2>/dev/null | wc -l); "
+        "printf 'files=%s recent=%s\\n' \"$files\" \"$recent\""
+    )
+
+
+def parse_spool_status(output: str) -> SpoolStatus:
+    values: dict[str, int] = {}
+    for part in output.split():
+        if "=" not in part:
+            continue
+        key, value = part.split("=", 1)
+        try:
+            values[key] = int(value)
+        except ValueError:
+            continue
+    return SpoolStatus(files=values.get("files", -1), recent=values.get("recent", -1))
+
+
+def ssh_target(user: str, host: str) -> str:
+    return user + "@" + host if user else host
+
+
+def shell_quote(value: str) -> str:
+    return "'" + value.replace("'", "'\"'\"'") + "'"
+
+
+def safe_release_name(value: str) -> bool:
+    value = value.strip()
+    if not value:
+        return False
+    return all(r.isalnum() or r in "._-" for r in value)
+
+
+def run(argv: list[str], cwd: str | None = None, env: dict[str, str] | None = None) -> None:
+    subprocess.run(argv, cwd=cwd, env=env, check=True)
+
+
+def run_capture(argv: list[str], cwd: str | None = None) -> str:
+    return subprocess.run(argv, cwd=cwd, check=True, stdout=subprocess.PIPE, text=True).stdout
+
+
+def parse_args(argv: list[str]) -> argparse.Namespace:
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--repo", default=".")
+    parser.add_argument("--go-dir", default=DEFAULT_GO_DIR)
+    parser.add_argument("--app-host", default=DEFAULT_APP_HOST)
+    parser.add_argument("--kafka-host", default=DEFAULT_KAFKA_HOST)
+    parser.add_argument("--user", default=DEFAULT_USER)
+    parser.add_argument("--release-root", default=DEFAULT_RELEASE_ROOT)
+    parser.add_argument("--release", default="")
+    parser.add_argument("--date", default="")
+    parser.add_argument("--timeout", type=float, default=20.0)
+    parser.add_argument("--spool-drain-timeout", type=float, default=900.0)
+    parser.add_argument("--spool-poll-interval", type=float, default=10.0)
+    parser.add_argument("--skip-acceptance", action="store_true")
+    return parser.parse_args(argv)
+
+
+def main(argv: list[str]) -> int:
+    args = parse_args(argv)
+    try:
+        deploy(args)
+    except subprocess.CalledProcessError as exc:
+        print("command failed: " + " ".join(exc.cmd), file=sys.stderr)
+        return exc.returncode or 1
+    except (OSError, shutil.Error) as exc:
+        print("deploy failed: " + str(exc), file=sys.stderr)
+        return 1
+    except RuntimeError as exc:
+        print("deploy failed: " + str(exc), file=sys.stderr)
+        return 1
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main(sys.argv[1:]))
--- a/tools/go_native_prod_smoke.py
+++ b/tools/go_native_prod_smoke.py
@@ -0,0 +1,544 @@
+#!/usr/bin/env python3
+"""HTTP smoke checks for the Go native production vehicle ingest stack."""
+
+from __future__ import annotations
+
+import argparse
+import datetime as dt
+import json
+import sys
+import urllib.parse
+import urllib.request
+from dataclasses import asdict, dataclass
+from typing import Any
+
+
+SHANGHAI = dt.timezone(dt.timedelta(hours=8))
+DEFAULT_BASE_URL = "http://115.29.187.205:20210"
+DEFAULT_REALTIME_MAX_AGE_MINUTES = 15.0
+
+
+@dataclass(frozen=True)
+class CheckSpec:
+    name: str
+    path: str
+    params: dict[str, Any]
+    minimum: int
+    kind: str = "total"
+    max_age_minutes: float | None = None
+    require_parsed_json: bool = False
+    require_frame_id: bool = False
+    require_metric_formula: bool = False
+
+
+@dataclass(frozen=True)
+class Check:
+    name: str
+    status: str
+    count: int
+    minimum: int
+    message: str
+
+
+@dataclass(frozen=True)
+class CheckWindow:
+    date_from: str
+    date_to: str
+    stat_date: str
+    max_raw_age_minutes: float | None
+
+
+def shanghai_day_window(now: dt.datetime | None = None) -> tuple[str, str]:
+    now = now or dt.datetime.now(tz=SHANGHAI)
+    local = now.astimezone(SHANGHAI)
+    start = dt.datetime(local.year, local.month, local.day, tzinfo=SHANGHAI)
+    end = start + dt.timedelta(days=1)
+    return start.isoformat(timespec="seconds"), end.isoformat(timespec="seconds")
+
+
+def resolve_check_window(
+    raw_date: str | None,
+    max_raw_age_minutes: float,
+    now: dt.datetime | None = None,
+) -> CheckWindow:
+    current = (now or dt.datetime.now(tz=SHANGHAI)).astimezone(SHANGHAI)
+    today = current.date()
+    if raw_date:
+        day = dt.date.fromisoformat(raw_date)
+        start = dt.datetime(day.year, day.month, day.day, tzinfo=SHANGHAI)
+        date_from, date_to = shanghai_day_window(start)
+        freshness = max_raw_age_minutes if day == today else None
+        return CheckWindow(date_from, date_to, raw_date, freshness)
+    date_from, date_to = shanghai_day_window(current)
+    return CheckWindow(date_from, date_to, date_from[:10], max_raw_age_minutes)
+
+
+def api_url(base_url: str, path: str, params: dict[str, Any]) -> str:
+    url = base_url.rstrip("/") + path
+    if not params:
+        return url
+    return url + "?" + urllib.parse.urlencode(params)
+
+
+def query_json(base_url: str, path: str, params: dict[str, Any], timeout: float) -> dict[str, Any]:
+    request = urllib.request.Request(
+        api_url(base_url, path, params),
+        headers={"Accept": "application/json"},
+    )
+    with urllib.request.urlopen(request, timeout=timeout) as response:
+        return json.loads(response.read().decode("utf-8"))
+
+
+def check_total(
+    name: str,
+    payload: dict[str, Any],
+    minimum: int,
+    max_age_minutes: float | None = None,
+    now: dt.datetime | None = None,
+    require_parsed_json: bool = False,
+    require_frame_id: bool = False,
+    require_metric_formula: bool = False,
+) -> Check:
+    count = int(payload.get("total") or 0)
+    items = payload.get("items") or []
+    sample = sample_summary(items)
+    age_message = latest_age_message(items, now)
+    if count >= minimum:
+        parsed_message = ""
+        if max_age_minutes is not None:
+            latest_age = latest_age_minutes(items, now)
+            if latest_age is None:
+                return Check(name, "fail", count, minimum, f"count={count}; missing latest ts; sample={sample}")
+            if latest_age > max_age_minutes:
+                return Check(
+                    name,
+                    "fail",
+                    count,
+                    minimum,
+                    f"count={count}; latest_age_minutes={latest_age:.1f}; "
+                    f"expected <= {max_age_minutes:.1f}; sample={sample}",
+                )
+        if require_parsed_json:
+            parsed_message = parsed_json_message(items)
+            if not parsed_message.startswith("parsed_json=ok"):
+                return Check(name, "fail", count, minimum, f"count={count}; {parsed_message}; sample={sample}")
+        frame_message = ""
+        if require_frame_id:
+            frame_message = frame_id_message(items)
+            if not frame_message.startswith("frame_id=ok"):
+                return Check(name, "fail", count, minimum, f"count={count}; {frame_message}; sample={sample}")
+        metric_message = ""
+        if require_metric_formula:
+            metric_message = metric_formula_message(items)
+            if not metric_message.startswith("metric_formula=ok"):
+                return Check(name, "fail", count, minimum, f"count={count}; {metric_message}; sample={sample}")
+        details = [f"count={count}", age_message]
+        if parsed_message:
+            details.append(parsed_message)
+        if frame_message:
+            details.append(frame_message)
+        if metric_message:
+            details.append(metric_message)
+        return Check(name, "pass", count, minimum, "; ".join(details) + f"; sample={sample}")
+    return Check(name, "fail", count, minimum, f"count={count}; expected >= {minimum}; {age_message}; sample={sample}")
+
+
+def parse_tdengine_utc_timestamp(value: str) -> dt.datetime:
+    value = str(value or "").strip()
+    for layout in ("%Y-%m-%d %H:%M:%S", "%Y-%m-%dT%H:%M:%S"):
+        try:
+            return dt.datetime.strptime(value[:19], layout).replace(tzinfo=dt.timezone.utc)
+        except ValueError:
+            continue
+    raise ValueError(f"unsupported timestamp: {value}")
+
+
+def latest_age_minutes(items: list[Any], now: dt.datetime | None = None) -> float | None:
+    if not items or not isinstance(items[0], dict):
+        return None
+    timestamp = items[0].get("received_at") or items[0].get("ts")
+    if not timestamp:
+        return None
+    current = now or dt.datetime.now(tz=dt.timezone.utc)
+    if current.tzinfo is None:
+        current = current.replace(tzinfo=dt.timezone.utc)
+    latest = parse_tdengine_utc_timestamp(str(timestamp))
+    return max(0.0, (current.astimezone(dt.timezone.utc) - latest).total_seconds() / 60)
+
+
+def latest_age_message(items: list[Any], now: dt.datetime | None = None) -> str:
+    latest_age = latest_age_minutes(items, now)
+    if latest_age is None:
+        return "latest_age_minutes=unknown"
+    return f"latest_age_minutes={latest_age:.1f}"
+
+
+def parsed_json_message(items: list[Any]) -> str:
+    if not items or not isinstance(items[0], dict):
+        return "missing parsed_json"
+    raw = items[0].get("parsed_json")
+    if isinstance(raw, dict) and raw:
+        return "parsed_json=ok"
+    if not isinstance(raw, str) or not raw.strip() or raw.strip().lower() == "null":
+        return "missing parsed_json"
+    try:
+        parsed = json.loads(raw)
+    except json.JSONDecodeError:
+        return "invalid parsed_json"
+    if isinstance(parsed, dict) and parsed:
+        return "parsed_json=ok"
+    return "invalid parsed_json"
+
+
+def frame_id_message(items: list[Any]) -> str:
+    if not items or not isinstance(items[0], dict):
+        return "missing frame_id"
+    frame_id = str(items[0].get("frame_id") or "").strip()
+    if frame_id:
+        return "frame_id=ok"
+    return "missing frame_id"
+
+
+def metric_formula_message(items: list[Any]) -> str:
+    if not items or not isinstance(items[0], dict):
+        return "missing metric row"
+    row = items[0]
+    try:
+        metric_value = float(row.get("metric_value"))
+        first_total = float(row.get("first_total_mileage_km"))
+        latest_total = float(row.get("latest_total_mileage_km"))
+    except (TypeError, ValueError):
+        return "missing metric formula fields"
+    metric_key = str(row.get("metric_key") or "")
+    if metric_key == "daily_mileage_km":
+        expected = max(0.0, latest_total - first_total)
+    elif metric_key == "daily_total_mileage_km":
+        expected = latest_total
+    else:
+        return "unsupported metric_key=" + metric_key
+    if abs(metric_value - expected) <= 0.001:
+        return "metric_formula=ok"
+    return f"metric_formula mismatch value={metric_value:.3f} expected={expected:.3f}"
+
+
+def check_realtime(
+    name: str,
+    payload: dict[str, Any],
+    max_age_minutes: float | None = None,
+    now: dt.datetime | None = None,
+) -> Check:
+    if payload.get("online") is False:
+        return Check(name, "fail", 0, 1, "online=false")
+    updated_message = ""
+    if max_age_minutes is not None:
+        updated_age = realtime_updated_age_minutes(payload, now)
+        if updated_age is None:
+            return Check(name, "fail", 0, 1, "missing updated_at_ms")
+        updated_message = f"updated_age_minutes={updated_age:.1f}"
+        if updated_age > max_age_minutes:
+            return Check(
+                name,
+                "fail",
+                0,
+                1,
+                updated_message + f"; expected <= {max_age_minutes:.1f}",
+            )
+    identifier = payload.get("vin") or payload.get("vehicle_key") or ""
+    protocols = payload.get("protocols") or []
+    protocol = payload.get("protocol") or ""
+    fields = payload.get("fields") or {}
+    message = json.dumps(
+        {
+            key: value
+            for key, value in {
+                "identifier": identifier,
+                "protocol": protocol,
+                "protocols": protocols,
+                "field_count": len(fields) if isinstance(fields, dict) else 0,
+                "online": payload.get("online"),
+            }.items()
+            if value not in (None, "", [])
+        },
+        ensure_ascii=False,
+        sort_keys=True,
+    )
+    if updated_message:
+        message = updated_message + "; " + message
+    return Check(name, "pass", 1, 1, message)
+
+
+def realtime_updated_age_minutes(payload: dict[str, Any], now: dt.datetime | None = None) -> float | None:
+    try:
+        updated_ms = int(payload.get("updated_at_ms"))
+    except (TypeError, ValueError):
+        return None
+    current = now or dt.datetime.now(tz=dt.timezone.utc)
+    if current.tzinfo is None:
+        current = current.replace(tzinfo=dt.timezone.utc)
+    updated = dt.datetime.fromtimestamp(updated_ms / 1000, tz=dt.timezone.utc)
+    return max(0.0, (current.astimezone(dt.timezone.utc) - updated).total_seconds() / 60)
+
+
+def sample_summary(items: list[Any]) -> str:
+    if not items:
+        return "{}"
+    first = items[0]
+    if not isinstance(first, dict):
+        return json.dumps(first, ensure_ascii=False, sort_keys=True)
+    keep = {
+        key: first.get(key)
+        for key in (
+            "ts",
+            "stat_date",
+            "protocol",
+            "vehicle_key",
+            "vin",
+            "phone",
+            "message_id_hex",
+            "metric_key",
+            "metric_value",
+            "total_mileage_km",
+            "latest_total_mileage_km",
+        )
+        if first.get(key) not in (None, "")
+    }
+    return json.dumps(keep, ensure_ascii=False, sort_keys=True)
+
+
+def overall_status(checks: list[Check]) -> str:
+    return "fail" if any(check.status == "fail" for check in checks) else "pass"
+
+
+def build_check_specs(
+    *,
+    date_from: str,
+    date_to: str,
+    stat_date: str,
+    min_raw: int,
+    min_history: int,
+    min_stat: int,
+    max_raw_age_minutes: float | None = None,
+) -> list[CheckSpec]:
+    raw_params = {"limit": 1, "orderBy": "receivedAt", "includeTotal": "false"}
+    gb32960_history_params = {"protocol": "GB32960", "dateFrom": date_from, "dateTo": date_to, "limit": 1}
+    jt808_history_params = {"protocol": "JT808", "dateFrom": date_from, "dateTo": date_to, "limit": 1}
+    yutong_mqtt_history_params = {"protocol": "YUTONG_MQTT", "dateFrom": date_from, "dateTo": date_to, "limit": 1}
+    return [
+        CheckSpec(
+            "gb32960.raw",
+            "/api/history/raw-frames",
+            {**raw_params, "protocol": "GB32960"},
+            min_raw,
+            max_age_minutes=max_raw_age_minutes,
+            require_parsed_json=True,
+        ),
+        CheckSpec(
+            "jt808.raw",
+            "/api/history/raw-frames",
+            {**raw_params, "protocol": "JT808"},
+            min_raw,
+            max_age_minutes=max_raw_age_minutes,
+            require_parsed_json=True,
+        ),
+        CheckSpec(
+            "yutong_mqtt.raw",
+            "/api/history/raw-frames",
+            {**raw_params, "protocol": "YUTONG_MQTT"},
+            min_raw,
+            max_age_minutes=max_raw_age_minutes,
+            require_parsed_json=True,
+        ),
+        CheckSpec("gb32960.locations", "/api/history/locations", gb32960_history_params, min_history, require_frame_id=True),
+        CheckSpec("gb32960.mileage_points", "/api/history/mileage-points", gb32960_history_params, min_history, require_frame_id=True),
+        CheckSpec("jt808.locations", "/api/history/locations", jt808_history_params, min_history, require_frame_id=True),
+        CheckSpec("jt808.mileage_points", "/api/history/mileage-points", jt808_history_params, min_history, require_frame_id=True),
+        CheckSpec("yutong_mqtt.locations", "/api/history/locations", yutong_mqtt_history_params, min_history, require_frame_id=True),
+        CheckSpec("yutong_mqtt.mileage_points", "/api/history/mileage-points", yutong_mqtt_history_params, min_history, require_frame_id=True),
+        CheckSpec(
+            "gb32960.daily_mileage",
+            "/api/stats/daily-metrics",
+            {
+                "protocol": "GB32960",
+                "metricKey": "daily_mileage_km",
+                "dateFrom": stat_date,
+                "dateTo": stat_date,
+                "limit": 1,
+            },
+            min_stat,
+            require_metric_formula=True,
+        ),
+        CheckSpec(
+            "gb32960.daily_total_mileage",
+            "/api/stats/daily-metrics",
+            {
+                "protocol": "GB32960",
+                "metricKey": "daily_total_mileage_km",
+                "dateFrom": stat_date,
+                "dateTo": stat_date,
+                "limit": 1,
+            },
+            min_stat,
+            require_metric_formula=True,
+        ),
+        CheckSpec(
+            "jt808.daily_mileage",
+            "/api/stats/daily-metrics",
+            {
+                "protocol": "JT808",
+                "metricKey": "daily_mileage_km",
+                "dateFrom": stat_date,
+                "dateTo": stat_date,
+                "limit": 1,
+            },
+            min_stat,
+            require_metric_formula=True,
+        ),
+        CheckSpec(
+            "jt808.daily_total_mileage",
+            "/api/stats/daily-metrics",
+            {
+                "protocol": "JT808",
+                "metricKey": "daily_total_mileage_km",
+                "dateFrom": stat_date,
+                "dateTo": stat_date,
+                "limit": 1,
+            },
+            min_stat,
+            require_metric_formula=True,
+        ),
+    ]
+
+
+def vehicle_identifier(item: dict[str, Any]) -> str:
+    for key in ("vin", "vehicle_key"):
+        value = str(item.get(key) or "").strip()
+        if value and value.lower() != "unknown":
+            return value
+    return ""
+
+
+def build_realtime_specs(payloads: dict[str, dict[str, Any]]) -> list[CheckSpec]:
+    configs = [
+        ("gb32960", "gb32960.raw", "GB32960"),
+        ("jt808", "jt808.raw", "JT808"),
+        ("yutong_mqtt", "yutong_mqtt.raw", "YUTONG_MQTT"),
+    ]
+    specs: list[CheckSpec] = []
+    for prefix, source_name, protocol in configs:
+        items = payloads.get(source_name, {}).get("items") or []
+        if not items or not isinstance(items[0], dict):
+            continue
+        identifier = vehicle_identifier(items[0])
+        if not identifier:
+            continue
+        encoded = urllib.parse.quote(identifier, safe="")
+        base_path = "/api/realtime/vehicles/" + encoded
+        specs.extend([
+            CheckSpec(
+                prefix + ".realtime",
+                base_path,
+                {},
+                1,
+                "realtime",
+                max_age_minutes=DEFAULT_REALTIME_MAX_AGE_MINUTES,
+            ),
+            CheckSpec(prefix + ".realtime_online", base_path + "/online", {}, 1, "realtime"),
+            CheckSpec(
+                prefix + ".realtime_protocol",
+                base_path + "/protocols/" + protocol,
+                {},
+                1,
+                "realtime",
+                max_age_minutes=DEFAULT_REALTIME_MAX_AGE_MINUTES,
+            ),
+        ])
+    return specs
+
+
+def run_checks(base_url: str, specs: list[CheckSpec], timeout: float) -> list[Check]:
+    checks: list[Check] = []
+    for spec in specs:
+        try:
+            payload = query_json(base_url, spec.path, spec.params, timeout)
+            if spec.kind == "realtime":
+                checks.append(check_realtime(spec.name, payload, spec.max_age_minutes))
+            else:
+                checks.append(check_total(
+                    spec.name,
+                    payload,
+                    spec.minimum,
+                    spec.max_age_minutes,
+                    require_parsed_json=spec.require_parsed_json,
+                    require_frame_id=spec.require_frame_id,
+                    require_metric_formula=spec.require_metric_formula,
+                ))
+        except Exception as exc:  # pragma: no cover - exercised by live failures.
+            checks.append(Check(spec.name, "fail", 0, spec.minimum, f"request failed: {exc}"))
+    return checks
+
+
+def query_payloads(base_url: str, specs: list[CheckSpec], timeout: float) -> tuple[list[Check], dict[str, dict[str, Any]]]:
+    checks: list[Check] = []
+    payloads: dict[str, dict[str, Any]] = {}
+    for spec in specs:
+        try:
+            payload = query_json(base_url, spec.path, spec.params, timeout)
+            payloads[spec.name] = payload
+            checks.append(check_total(
+                spec.name,
+                payload,
+                spec.minimum,
+                spec.max_age_minutes,
+                require_parsed_json=spec.require_parsed_json,
+                require_frame_id=spec.require_frame_id,
+                require_metric_formula=spec.require_metric_formula,
+            ))
+        except Exception as exc:
+            checks.append(Check(spec.name, "fail", 0, spec.minimum, f"request failed: {exc}"))
+    return checks, payloads
+
+
+def parse_args(argv: list[str]) -> argparse.Namespace:
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--base-url", default=DEFAULT_BASE_URL)
+    parser.add_argument("--date", help="Shanghai local date, YYYY-MM-DD. Defaults to today.")
+    parser.add_argument("--timeout", type=float, default=5.0)
+    parser.add_argument("--min-raw", type=int, default=1)
+    parser.add_argument("--min-history", type=int, default=1)
+    parser.add_argument("--min-stat", type=int, default=1)
+    parser.add_argument(
+        "--max-raw-age-minutes",
+        type=float,
+        default=15.0,
+        help="Require latest RAW sample age to be at most this many minutes when checking today's date.",
+    )
+    return parser.parse_args(argv)
+
+
+def main(argv: list[str]) -> int:
+    args = parse_args(argv)
+    window = resolve_check_window(args.date, args.max_raw_age_minutes)
+    specs = build_check_specs(
+        date_from=window.date_from,
+        date_to=window.date_to,
+        stat_date=window.stat_date,
+        min_raw=args.min_raw,
+        min_history=args.min_history,
+        min_stat=args.min_stat,
+        max_raw_age_minutes=window.max_raw_age_minutes,
+    )
+    checks, payloads = query_payloads(args.base_url, specs, args.timeout)
+    checks.extend(run_checks(args.base_url, build_realtime_specs(payloads), args.timeout))
+    status = overall_status(checks)
+    print(json.dumps({
+        "status": status,
+        "baseUrl": args.base_url,
+        "dateFrom": window.date_from,
+        "dateTo": window.date_to,
+        "checks": [asdict(check) for check in checks],
+    }, ensure_ascii=False, indent=2))
+    return 0 if status == "pass" else 1
+
+
+if __name__ == "__main__":
+    raise SystemExit(main(sys.argv[1:]))
--- a/tools/go_prod_acceptance.py
+++ b/tools/go_prod_acceptance.py
@@ -0,0 +1,136 @@
+#!/usr/bin/env python3
+"""Run the Go native production acceptance smoke suite."""
+
+from __future__ import annotations
+
+import argparse
+import json
+import subprocess
+import sys
+from dataclasses import asdict, dataclass
+from typing import Any
+
+
+DEFAULT_APP_HOST = "115.29.187.205"
+DEFAULT_KAFKA_HOST = "114.55.58.251"
+DEFAULT_USER = "root"
+DEFAULT_BASE_URL = "http://115.29.187.205:20210"
+
+
+@dataclass(frozen=True)
+class ChildCommand:
+    name: str
+    argv: list[str]
+
+
+@dataclass(frozen=True)
+class ChildResult:
+    name: str
+    status: str
+    exit_code: int
+    payload: dict[str, Any]
+
+
+def build_commands(args: argparse.Namespace) -> list[ChildCommand]:
+    timeout = str(args.timeout)
+    return [
+        ChildCommand("systemd", [
+            sys.executable,
+            "tools/go_systemd_prod_smoke.py",
+            "--host",
+            args.app_host,
+            "--user",
+            args.ssh_user,
+            "--timeout",
+            timeout,
+        ]),
+        ChildCommand("kafka", [
+            sys.executable,
+            "tools/go_kafka_prod_smoke.py",
+            "--host",
+            args.kafka_host,
+            "--user",
+            args.ssh_user,
+            "--max-lag",
+            str(args.max_lag),
+            "--timeout",
+            timeout,
+        ]),
+        ChildCommand("http", [
+            sys.executable,
+            "tools/go_native_prod_smoke.py",
+            "--base-url",
+            args.base_url,
+            "--timeout",
+            timeout,
+        ] + (["--date", args.date] if args.date else [])),
+    ]
+
+
+def run_child(command: ChildCommand, timeout: float) -> ChildResult:
+    completed = subprocess.run(
+        command.argv,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE,
+        text=True,
+        timeout=timeout,
+    )
+    payload = parse_json_output(completed.stdout)
+    if completed.stderr.strip():
+        payload.setdefault("stderr", completed.stderr.strip())
+    status = payload.get("status")
+    if status not in {"pass", "fail"}:
+        status = "pass" if completed.returncode == 0 else "fail"
+    return ChildResult(command.name, status, completed.returncode, payload)
+
+
+def parse_json_output(output: str) -> dict[str, Any]:
+    output = output.strip()
+    if not output:
+        return {}
+    start = output.find("{")
+    end = output.rfind("}")
+    if start < 0 or end < start:
+        return {"rawOutput": output}
+    try:
+        return json.loads(output[start:end + 1])
+    except json.JSONDecodeError:
+        return {"rawOutput": output}
+
+
+def overall_status(results: list[ChildResult]) -> str:
+    if not results:
+        return "fail"
+    return "fail" if any(result.status != "pass" or result.exit_code != 0 for result in results) else "pass"
+
+
+def parse_args(argv: list[str]) -> argparse.Namespace:
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--app-host", default=DEFAULT_APP_HOST)
+    parser.add_argument("--kafka-host", default=DEFAULT_KAFKA_HOST)
+    parser.add_argument("--ssh-user", default=DEFAULT_USER)
+    parser.add_argument("--base-url", default=DEFAULT_BASE_URL)
+    parser.add_argument("--date", help="Shanghai local date, YYYY-MM-DD. Defaults to today in go_native_prod_smoke.py.")
+    parser.add_argument("--timeout", type=float, default=20.0)
+    parser.add_argument("--max-lag", type=int, default=100)
+    return parser.parse_args(argv)
+
+
+def main(argv: list[str]) -> int:
+    args = parse_args(argv)
+    results: list[ChildResult] = []
+    for command in build_commands(args):
+        try:
+            results.append(run_child(command, args.timeout + 10))
+        except Exception as exc:
+            results.append(ChildResult(command.name, "fail", 1, {"status": "fail", "error": str(exc)}))
+    status = overall_status(results)
+    print(json.dumps({
+        "status": status,
+        "checks": [asdict(result) for result in results],
+    }, ensure_ascii=False, indent=2))
+    return 0 if status == "pass" else 1
+
+
+if __name__ == "__main__":
+    raise SystemExit(main(sys.argv[1:]))
--- a/tools/go_systemd_prod_smoke.py
+++ b/tools/go_systemd_prod_smoke.py
@@ -0,0 +1,210 @@
+#!/usr/bin/env python3
+"""Systemd and port smoke checks for the Go native production ECS."""
+
+from __future__ import annotations
+
+import argparse
+import json
+import subprocess
+import sys
+from dataclasses import asdict, dataclass
+
+
+DEFAULT_HOST = "115.29.187.205"
+DEFAULT_USER = "root"
+DEFAULT_SERVICES = [
+    "lingniu-go-gateway.service",
+    "lingniu-go-history-writer.service",
+    "lingniu-go-stat-writer.service",
+    "lingniu-go-realtime-api.service",
+]
+DEFAULT_PORTS = {
+    808: "gateway",
+    32960: "gateway",
+    20210: "realtime-api",
+}
+DEFAULT_RELEASE_ROOT = "/opt/lingniu-go-native"
+DEFAULT_SPOOL_DIR = "/opt/lingniu-go-native/spool/gateway"
+DEFAULT_BINARIES = ["gateway", "history-writer", "stat-writer", "realtime-api"]
+
+
+@dataclass(frozen=True)
+class Check:
+    name: str
+    status: str
+    message: str
+
+
+@dataclass(frozen=True)
+class ServiceState:
+    active: str
+    enabled: str
+
+
+def parse_service_states(output: str) -> dict[str, ServiceState]:
+    states: dict[str, ServiceState] = {}
+    for line in output.splitlines():
+        parts = line.split()
+        if len(parts) >= 2:
+            enabled = parts[2] if len(parts) >= 3 else "enabled"
+            states[parts[0]] = ServiceState(parts[1], enabled)
+    return states
+
+
+def service_checks(output: str, services: list[str]) -> list[Check]:
+    states = parse_service_states(output)
+    checks: list[Check] = []
+    for service in services:
+        state = states.get(service, ServiceState("missing", "missing"))
+        status = "pass" if state.active == "active" and state.enabled == "enabled" else "fail"
+        checks.append(Check(
+            "service." + service,
+            status,
+            "state=" + state.active + "; enabled=" + state.enabled,
+        ))
+    return checks
+
+
+def port_checks(output: str, ports: dict[int, str]) -> list[Check]:
+    lines = output.splitlines()
+    checks: list[Check] = []
+    for port, process in sorted(ports.items()):
+        matching = [line.strip() for line in lines if has_port(line, port)]
+        if not matching:
+            checks.append(Check("port." + str(port), "fail", "not listening"))
+            continue
+        owned = [line for line in matching if process in line]
+        if owned:
+            checks.append(Check("port." + str(port), "pass", owned[0]))
+        else:
+            checks.append(Check("port." + str(port), "fail", matching[0]))
+    return checks
+
+
+def has_port(line: str, port: int) -> bool:
+    needle = ":" + str(port)
+    return needle + " " in line or needle + "\t" in line
+
+
+def spool_check(output: str) -> Check:
+    values = parse_key_values(output)
+    files = int(values.get("files", "-1"))
+    recent = int(values.get("recent", "-1"))
+    status = "pass" if files == 0 and recent == 0 else "fail"
+    return Check("spool.gateway", status, output.strip() or "missing")
+
+
+def release_check(output: str) -> Check:
+    values = parse_key_values(output)
+    current = values.get("current", "")
+    binaries_present = [values.get(binary, "0") == "1" for binary in DEFAULT_BINARIES]
+    status = "pass" if current and all(binaries_present) else "fail"
+    return Check("release.current", status, output.strip() or "missing")
+
+
+def parse_key_values(output: str) -> dict[str, str]:
+    values: dict[str, str] = {}
+    for part in output.split():
+        if "=" not in part:
+            continue
+        key, value = part.split("=", 1)
+        values[key] = value
+    return values
+
+
+def ssh(host: str, user: str, command: str, timeout: float) -> str:
+    target = user + "@" + host if user else host
+    completed = subprocess.run(
+        ["ssh", "-o", "StrictHostKeyChecking=no", "-o", "UserKnownHostsFile=/dev/null", target, command],
+        check=True,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE,
+        text=True,
+        timeout=timeout,
+    )
+    return completed.stdout
+
+
+def remote_command(services: list[str]) -> str:
+    quoted = " ".join(services)
+    return (
+        "for svc in " + quoted + "; do "
+        "printf '%s ' \"$svc\"; "
+        "printf '%s ' \"$(systemctl is-active \"$svc\" 2>/dev/null || true)\"; "
+        "systemctl is-enabled \"$svc\" 2>/dev/null || true; "
+        "done; "
+        "printf '\\n--PORTS--\\n'; "
+        "ss -lntp; "
+        "printf '\\n--SPOOL--\\n'; "
+        "spool='" + DEFAULT_SPOOL_DIR + "'; "
+        "if test -d \"$spool\"; then "
+        "files=$(find \"$spool\" -type f | wc -l); "
+        "bytes=$(du -sb \"$spool\" 2>/dev/null | awk '{print $1}'); "
+        "recent=$(find \"$spool\" -type f -mmin -5 | wc -l); "
+        "printf 'files=%s bytes=%s recent=%s\\n' \"$files\" \"${bytes:-0}\" \"$recent\"; "
+        "else printf 'files=-1 bytes=0 recent=-1 missing=%s\\n' \"$spool\"; fi; "
+        "printf '\\n--RELEASE--\\n'; "
+        "root='" + DEFAULT_RELEASE_ROOT + "'; "
+        "current=$(readlink -f \"$root/current\" 2>/dev/null || true); "
+        "printf 'current=%s' \"$current\"; "
+        "for bin in " + " ".join(DEFAULT_BINARIES) + "; do "
+        "if test -x \"$root/current/$bin\"; then present=1; else present=0; fi; "
+        "printf ' %s=%s' \"$bin\" \"$present\"; "
+        "done; printf '\\n'"
+    )
+
+
+def split_remote_output(output: str) -> tuple[str, str, str, str]:
+    ports_marker = "\n--PORTS--\n"
+    spool_marker = "\n--SPOOL--\n"
+    release_marker = "\n--RELEASE--\n"
+    if ports_marker not in output:
+        return output, "", "", ""
+    service_output, rest = output.split(ports_marker, 1)
+    if spool_marker not in rest:
+        return service_output, rest, "", ""
+    port_output, spool_output = rest.split(spool_marker, 1)
+    if release_marker not in spool_output:
+        return service_output, port_output, spool_output, ""
+    spool_output, release_output = spool_output.split(release_marker, 1)
+    return service_output, port_output, spool_output, release_output
+
+
+def run(args: argparse.Namespace) -> tuple[str, list[Check]]:
+    output = ssh(args.host, args.user, remote_command(DEFAULT_SERVICES), args.timeout)
+    service_output, port_output, spool_output, release_output = split_remote_output(output)
+    checks = (
+        service_checks(service_output, DEFAULT_SERVICES)
+        + port_checks(port_output, DEFAULT_PORTS)
+        + [spool_check(spool_output)]
+        + [release_check(release_output)]
+    )
+    status = "fail" if any(check.status == "fail" for check in checks) else "pass"
+    return status, checks
+
+
+def parse_args(argv: list[str]) -> argparse.Namespace:
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--host", default=DEFAULT_HOST)
+    parser.add_argument("--user", default=DEFAULT_USER)
+    parser.add_argument("--timeout", type=float, default=20.0)
+    return parser.parse_args(argv)
+
+
+def main(argv: list[str]) -> int:
+    args = parse_args(argv)
+    try:
+        status, checks = run(args)
+    except Exception as exc:
+        status = "fail"
+        checks = [Check("systemd.ssh", "fail", str(exc))]
+    print(json.dumps({
+        "status": status,
+        "host": args.host,
+        "checks": [asdict(check) for check in checks],
+    }, ensure_ascii=False, indent=2))
+    return 0 if status == "pass" else 1
+
+
+if __name__ == "__main__":
+    raise SystemExit(main(sys.argv[1:]))
--- a/tools/test_go_kafka_prod_smoke.py
+++ b/tools/test_go_kafka_prod_smoke.py
@@ -0,0 +1,62 @@
+import unittest
+
+from tools import go_kafka_prod_smoke as smoke
+
+
+class GoKafkaProdSmokeTest(unittest.TestCase):
+    def test_parse_topic_list_marks_required_topics_present(self):
+        topics = smoke.parse_topic_list("""
+vehicle.raw.go.gb32960.v1
+vehicle.raw.go.jt808.v1
+vehicle.raw.go.yutong-mqtt.v1
+vehicle.event.go.unified.v1
+""")
+
+        checks = smoke.topic_checks(topics, smoke.DEFAULT_TOPICS)
+
+        self.assertTrue(all(check.status == "pass" for check in checks))
+
+    def test_topic_checks_fail_when_required_topic_missing(self):
+        topics = {"vehicle.raw.go.gb32960.v1"}
+
+        checks = smoke.topic_checks(topics, ["vehicle.raw.go.gb32960.v1", "vehicle.event.go.unified.v1"])
+
+        by_name = {check.name: check for check in checks}
+        self.assertEqual(by_name["topic.vehicle.event.go.unified.v1"].status, "fail")
+
+    def test_parse_consumer_group_describe_reads_lag_rows(self):
+        rows = smoke.parse_consumer_group_describe("""
+GROUP           TOPIC                       PARTITION  CURRENT-OFFSET  LOG-END-OFFSET  LAG
+go-realtime-api vehicle.event.go.unified.v1 0          15992           15992           0
+go-realtime-api vehicle.event.go.unified.v1 1          2036            2036            3
+""")
+
+        self.assertEqual(rows[0].group, "go-realtime-api")
+        self.assertEqual(rows[1].topic, "vehicle.event.go.unified.v1")
+        self.assertEqual(rows[1].lag, 3)
+
+    def test_lag_checks_fail_when_lag_exceeds_threshold(self):
+        rows = [
+            smoke.ConsumerLag("go-history-writer", "vehicle.raw.go.jt808.v1", 0, 100, 100, 0),
+            smoke.ConsumerLag("go-history-writer", "vehicle.raw.go.jt808.v1", 1, 100, 110, 10),
+        ]
+
+        check = smoke.group_lag_check("go-history-writer", rows, max_lag=5)
+
+        self.assertEqual(check.status, "fail")
+        self.assertIn("max_lag=10", check.message)
+
+    def test_lag_checks_pass_when_group_has_rows_and_lag_is_small(self):
+        rows = [
+            smoke.ConsumerLag("go-stat-writer", "vehicle.raw.go.gb32960.v1", 0, 100, 100, 0),
+            smoke.ConsumerLag("go-stat-writer", "vehicle.raw.go.jt808.v1", 1, 100, 101, 1),
+        ]
+
+        check = smoke.group_lag_check("go-stat-writer", rows, max_lag=5)
+
+        self.assertEqual(check.status, "pass")
+        self.assertIn("max_lag=1", check.message)
+
+
+if __name__ == "__main__":
+    unittest.main()
--- a/tools/test_go_native_deploy.py
+++ b/tools/test_go_native_deploy.py
@@ -0,0 +1,63 @@
+import unittest
+
+from tools import go_native_deploy as deploy
+
+
+class GoNativeDeployTest(unittest.TestCase):
+    def test_build_commands_cover_four_production_binaries(self):
+        commands = deploy.build_commands("/repo/go/vehicle-gateway", "/tmp/out")
+
+        self.assertEqual([command.output_name for command in commands], [
+            "gateway",
+            "history-writer",
+            "stat-writer",
+            "realtime-api",
+        ])
+        for command in commands:
+            self.assertEqual(command.argv[:3], ["go", "build", "-trimpath"])
+            self.assertIn("GOOS=linux", command.env)
+            self.assertIn("GOARCH=amd64", command.env)
+            self.assertIn("CGO_ENABLED=0", command.env)
+
+    def test_remote_switch_command_creates_release_and_restarts_all_services(self):
+        command = deploy.remote_switch_command("409f55b", "/opt/lingniu-go-native", "/tmp/lingniu-go-native-409f55b.tar.gz")
+
+        self.assertIn("/opt/lingniu-go-native/releases/409f55b", command)
+        self.assertIn("ln -sfn", command)
+        self.assertIn("systemctl restart lingniu-go-gateway", command)
+        self.assertIn("systemctl restart lingniu-go-history-writer", command)
+        self.assertIn("systemctl restart lingniu-go-stat-writer", command)
+        self.assertIn("systemctl restart lingniu-go-realtime-api", command)
+
+    def test_acceptance_command_uses_deployed_hosts_and_date(self):
+        command = deploy.acceptance_command(
+            app_host="115.29.187.205",
+            kafka_host="114.55.58.251",
+            date="2026-07-02",
+            timeout=20,
+        )
+
+        self.assertEqual(command[:2], ["python3", "tools/go_prod_acceptance.py"])
+        self.assertIn("--app-host", command)
+        self.assertIn("115.29.187.205", command)
+        self.assertIn("--kafka-host", command)
+        self.assertIn("114.55.58.251", command)
+        self.assertIn("--date", command)
+        self.assertIn("2026-07-02", command)
+
+    def test_parse_spool_status_reads_file_and_recent_counts(self):
+        status = deploy.parse_spool_status("files=42 recent=3")
+
+        self.assertEqual(status.files, 42)
+        self.assertEqual(status.recent, 3)
+
+    def test_spool_status_command_targets_gateway_spool_directory(self):
+        command = deploy.spool_status_command("/opt/lingniu-go-native")
+
+        self.assertIn("/opt/lingniu-go-native/spool/gateway", command)
+        self.assertIn("files=", command)
+        self.assertIn("recent=", command)
+
+
+if __name__ == "__main__":
+    unittest.main()
--- a/tools/test_go_native_prod_smoke.py
+++ b/tools/test_go_native_prod_smoke.py
@@ -0,0 +1,358 @@
+import datetime as dt
+import unittest
+
+from tools import go_native_prod_smoke as smoke
+
+
+class GoNativeProdSmokeTest(unittest.TestCase):
+    def test_shanghai_day_window_uses_plus_eight_bounds(self):
+        now = dt.datetime(2026, 7, 2, 1, 35, tzinfo=smoke.SHANGHAI)
+
+        date_from, date_to = smoke.shanghai_day_window(now)
+
+        self.assertEqual(date_from, "2026-07-02T00:00:00+08:00")
+        self.assertEqual(date_to, "2026-07-03T00:00:00+08:00")
+
+    def test_api_url_encodes_plus_eight_date_range(self):
+        url = smoke.api_url(
+            "http://example.test/base/",
+            "/api/history/raw-frames",
+            {
+                "protocol": "JT808",
+                "dateFrom": "2026-07-02T00:00:00+08:00",
+                "dateTo": "2026-07-03T00:00:00+08:00",
+                "limit": 1,
+            },
+        )
+
+        self.assertEqual(
+            url,
+            "http://example.test/base/api/history/raw-frames?"
+            "protocol=JT808&dateFrom=2026-07-02T00%3A00%3A00%2B08%3A00"
+            "&dateTo=2026-07-03T00%3A00%3A00%2B08%3A00&limit=1",
+        )
+
+    def test_explicit_today_date_still_enforces_raw_freshness(self):
+        now = dt.datetime(2026, 7, 2, 9, 30, tzinfo=smoke.SHANGHAI)
+
+        window = smoke.resolve_check_window("2026-07-02", 15.0, now)
+
+        self.assertEqual(window.date_from, "2026-07-02T00:00:00+08:00")
+        self.assertEqual(window.date_to, "2026-07-03T00:00:00+08:00")
+        self.assertEqual(window.stat_date, "2026-07-02")
+        self.assertEqual(window.max_raw_age_minutes, 15.0)
+
+    def test_explicit_historical_date_disables_raw_freshness(self):
+        now = dt.datetime(2026, 7, 2, 9, 30, tzinfo=smoke.SHANGHAI)
+
+        window = smoke.resolve_check_window("2026-07-01", 15.0, now)
+
+        self.assertEqual(window.date_from, "2026-07-01T00:00:00+08:00")
+        self.assertEqual(window.date_to, "2026-07-02T00:00:00+08:00")
+        self.assertEqual(window.stat_date, "2026-07-01")
+        self.assertIsNone(window.max_raw_age_minutes)
+
+    def test_total_check_passes_when_total_reaches_minimum(self):
+        check = smoke.check_total(
+            "jt808.raw",
+            {"total": 2, "items": [{"vehicle_key": "JT808:013307811170"}]},
+            minimum=1,
+        )
+
+        self.assertEqual(check.status, "pass")
+        self.assertEqual(check.count, 2)
+        self.assertIn("JT808:013307811170", check.message)
+
+    def test_total_check_fails_when_total_is_below_minimum(self):
+        check = smoke.check_total("gb32960.raw", {"total": 0, "items": []}, minimum=1)
+
+        self.assertEqual(check.status, "fail")
+        self.assertEqual(check.count, 0)
+        self.assertIn("expected >= 1", check.message)
+
+    def test_overall_status_fails_if_any_check_fails(self):
+        checks = [
+            smoke.Check("a", "pass", 1, 1, "ok"),
+            smoke.Check("b", "fail", 0, 1, "bad"),
+        ]
+
+        self.assertEqual(smoke.overall_status(checks), "fail")
+
+    def test_build_checks_cover_three_raw_protocols_and_two_daily_metric_protocols(self):
+        specs = smoke.build_check_specs(
+            date_from="2026-07-02T00:00:00+08:00",
+            date_to="2026-07-03T00:00:00+08:00",
+            stat_date="2026-07-02",
+            min_raw=1,
+            min_history=1,
+            min_stat=1,
+        )
+
+        names = [spec.name for spec in specs]
+
+        self.assertIn("gb32960.raw", names)
+        self.assertIn("jt808.raw", names)
+        self.assertIn("yutong_mqtt.raw", names)
+        self.assertIn("gb32960.locations", names)
+        self.assertIn("gb32960.mileage_points", names)
+        self.assertIn("jt808.locations", names)
+        self.assertIn("jt808.mileage_points", names)
+        self.assertIn("yutong_mqtt.locations", names)
+        self.assertIn("yutong_mqtt.mileage_points", names)
+        self.assertIn("gb32960.daily_mileage", names)
+        self.assertIn("jt808.daily_total_mileage", names)
+
+    def test_raw_checks_order_by_received_at_for_ingest_freshness(self):
+        specs = smoke.build_check_specs(
+            date_from="2026-07-02T00:00:00+08:00",
+            date_to="2026-07-03T00:00:00+08:00",
+            stat_date="2026-07-02",
+            min_raw=1,
+            min_history=1,
+            min_stat=1,
+            max_raw_age_minutes=15,
+        )
+
+        raw_specs = [spec for spec in specs if spec.name.endswith(".raw")]
+
+        self.assertTrue(raw_specs)
+        for spec in raw_specs:
+            self.assertEqual(spec.params.get("orderBy"), "receivedAt")
+            self.assertEqual(spec.params.get("includeTotal"), "false")
+            self.assertNotIn("dateFrom", spec.params)
+            self.assertNotIn("dateTo", spec.params)
+
+    def test_vehicle_identifier_prefers_vin_over_vehicle_key(self):
+        identifier = smoke.vehicle_identifier({
+            "vin": "LB9A32A20R0LS1343",
+            "vehicle_key": "GB32960:ignored",
+        })
+
+        self.assertEqual(identifier, "LB9A32A20R0LS1343")
+
+    def test_vehicle_identifier_falls_back_to_vehicle_key(self):
+        identifier = smoke.vehicle_identifier({
+            "vin": "",
+            "vehicle_key": "JT808:013307811170",
+        })
+
+        self.assertEqual(identifier, "JT808:013307811170")
+
+    def test_realtime_specs_are_built_from_raw_samples_with_vin(self):
+        payloads = {
+            "gb32960.raw": {"items": [{"vin": "LB9A32A20R0LS1343", "vehicle_key": "LB9A32A20R0LS1343"}]},
+            "jt808.raw": {"items": [{"vin": "", "vehicle_key": "JT808:013307811170"}]},
+            "yutong_mqtt.raw": {"items": [{"vin": "LMRKH9AC6R1004108"}]},
+        }
+
+        specs = smoke.build_realtime_specs(payloads)
+
+        self.assertEqual(
+            [(spec.name, spec.path) for spec in specs],
+            [
+                ("gb32960.realtime", "/api/realtime/vehicles/LB9A32A20R0LS1343"),
+                ("gb32960.realtime_online", "/api/realtime/vehicles/LB9A32A20R0LS1343/online"),
+                ("gb32960.realtime_protocol", "/api/realtime/vehicles/LB9A32A20R0LS1343/protocols/GB32960"),
+                ("jt808.realtime", "/api/realtime/vehicles/JT808%3A013307811170"),
+                ("jt808.realtime_online", "/api/realtime/vehicles/JT808%3A013307811170/online"),
+                ("jt808.realtime_protocol", "/api/realtime/vehicles/JT808%3A013307811170/protocols/JT808"),
+                ("yutong_mqtt.realtime", "/api/realtime/vehicles/LMRKH9AC6R1004108"),
+                ("yutong_mqtt.realtime_online", "/api/realtime/vehicles/LMRKH9AC6R1004108/online"),
+                ("yutong_mqtt.realtime_protocol", "/api/realtime/vehicles/LMRKH9AC6R1004108/protocols/YUTONG_MQTT"),
+            ],
+        )
+
+    def test_realtime_check_requires_online_true_when_field_exists(self):
+        check = smoke.check_realtime(
+            "gb32960.realtime_online",
+            {"vin": "LB9A32A20R0LS1343", "online": True, "protocols": ["GB32960"]},
+        )
+
+        self.assertEqual(check.status, "pass")
+        self.assertEqual(check.count, 1)
+
+    def test_realtime_check_fails_when_online_false(self):
+        check = smoke.check_realtime(
+            "gb32960.realtime_online",
+            {"vin": "LB9A32A20R0LS1343", "online": False},
+        )
+
+        self.assertEqual(check.status, "fail")
+        self.assertIn("online=false", check.message)
+
+    def test_realtime_check_fails_when_snapshot_is_stale(self):
+        now = dt.datetime(2026, 7, 2, 0, 30, 0, tzinfo=dt.timezone.utc)
+
+        check = smoke.check_realtime(
+            "jt808.realtime",
+            {"vehicle_key": "JT808:013307811170", "updated_at_ms": 1782950400000},
+            max_age_minutes=15,
+            now=now,
+        )
+
+        self.assertEqual(check.status, "fail")
+        self.assertIn("updated_age_minutes=30.0", check.message)
+
+    def test_realtime_check_passes_when_snapshot_is_fresh(self):
+        now = dt.datetime(2026, 7, 2, 0, 30, 0, tzinfo=dt.timezone.utc)
+
+        check = smoke.check_realtime(
+            "jt808.realtime",
+            {"vehicle_key": "JT808:013307811170", "updated_at_ms": 1782951600000},
+            max_age_minutes=15,
+            now=now,
+        )
+
+        self.assertEqual(check.status, "pass")
+        self.assertIn("updated_age_minutes=10.0", check.message)
+
+    def test_parse_tdengine_utc_timestamp_as_aware_utc(self):
+        parsed = smoke.parse_tdengine_utc_timestamp("2026-07-01 17:36:02")
+
+        self.assertEqual(parsed, dt.datetime(2026, 7, 1, 17, 36, 2, tzinfo=dt.timezone.utc))
+
+    def test_total_check_fails_when_latest_sample_is_stale(self):
+        now = dt.datetime(2026, 7, 1, 18, 0, 0, tzinfo=dt.timezone.utc)
+
+        check = smoke.check_total(
+            "gb32960.raw",
+            {"total": 1, "items": [{"ts": "2026-07-01 17:00:00"}]},
+            minimum=1,
+            max_age_minutes=30,
+            now=now,
+        )
+
+        self.assertEqual(check.status, "fail")
+        self.assertIn("latest_age_minutes=60.0", check.message)
+
+    def test_total_check_uses_received_at_for_raw_freshness_when_present(self):
+        now = dt.datetime(2026, 7, 1, 18, 0, 0, tzinfo=dt.timezone.utc)
+
+        check = smoke.check_total(
+            "gb32960.raw",
+            {
+                "total": 1,
+                "items": [{
+                    "ts": "2026-07-01 17:00:00",
+                    "received_at": "2026-07-01 17:58:00",
+                }],
+            },
+            minimum=1,
+            max_age_minutes=15,
+            now=now,
+        )
+
+        self.assertEqual(check.status, "pass")
+        self.assertIn("latest_age_minutes=2.0", check.message)
+
+    def test_total_check_passes_when_latest_sample_is_fresh(self):
+        now = dt.datetime(2026, 7, 1, 18, 0, 0, tzinfo=dt.timezone.utc)
+
+        check = smoke.check_total(
+            "gb32960.raw",
+            {"total": 1, "items": [{"ts": "2026-07-01 17:45:00"}]},
+            minimum=1,
+            max_age_minutes=30,
+            now=now,
+        )
+
+        self.assertEqual(check.status, "pass")
+        self.assertIn("latest_age_minutes=15.0", check.message)
+
+    def test_raw_check_requires_structured_parsed_json(self):
+        check = smoke.check_total(
+            "jt808.raw",
+            {
+                "total": 1,
+                "items": [{
+                    "ts": "2026-07-01 17:45:00",
+                    "parsed_json": "",
+                }],
+            },
+            minimum=1,
+            require_parsed_json=True,
+        )
+
+        self.assertEqual(check.status, "fail")
+        self.assertIn("missing parsed_json", check.message)
+
+    def test_raw_check_accepts_structured_parsed_json(self):
+        check = smoke.check_total(
+            "gb32960.raw",
+            {
+                "total": 1,
+                "items": [{
+                    "ts": "2026-07-01 17:45:00",
+                    "parsed_json": "{\"header\":{\"vin\":\"LTEST\"}}",
+                }],
+            },
+            minimum=1,
+            require_parsed_json=True,
+        )
+
+        self.assertEqual(check.status, "pass")
+        self.assertIn("parsed_json=ok", check.message)
+
+    def test_history_check_requires_frame_id_backlink(self):
+        check = smoke.check_total(
+            "jt808.locations",
+            {"total": 1, "items": [{"ts": "2026-07-01 17:45:00", "frame_id": ""}]},
+            minimum=1,
+            require_frame_id=True,
+        )
+
+        self.assertEqual(check.status, "fail")
+        self.assertIn("missing frame_id", check.message)
+
+    def test_history_check_accepts_frame_id_backlink(self):
+        check = smoke.check_total(
+            "jt808.mileage_points",
+            {"total": 1, "items": [{"ts": "2026-07-01 17:45:00", "frame_id": "go_abc"}]},
+            minimum=1,
+            require_frame_id=True,
+        )
+
+        self.assertEqual(check.status, "pass")
+        self.assertIn("frame_id=ok", check.message)
+
+    def test_daily_mileage_formula_requires_latest_minus_first(self):
+        check = smoke.check_total(
+            "jt808.daily_mileage",
+            {
+                "total": 1,
+                "items": [{
+                    "metric_key": "daily_mileage_km",
+                    "metric_value": 40.0,
+                    "first_total_mileage_km": 4434.9,
+                    "latest_total_mileage_km": 4481.0,
+                }],
+            },
+            minimum=1,
+            require_metric_formula=True,
+        )
+
+        self.assertEqual(check.status, "fail")
+        self.assertIn("metric_formula mismatch", check.message)
+
+    def test_daily_total_formula_requires_latest_total(self):
+        check = smoke.check_total(
+            "jt808.daily_total_mileage",
+            {
+                "total": 1,
+                "items": [{
+                    "metric_key": "daily_total_mileage_km",
+                    "metric_value": 4481.0,
+                    "first_total_mileage_km": 4434.9,
+                    "latest_total_mileage_km": 4481.0,
+                }],
+            },
+            minimum=1,
+            require_metric_formula=True,
+        )
+
+        self.assertEqual(check.status, "pass")
+        self.assertIn("metric_formula=ok", check.message)
+
+
+if __name__ == "__main__":
+    unittest.main()
--- a/tools/test_go_prod_acceptance.py
+++ b/tools/test_go_prod_acceptance.py
@@ -0,0 +1,53 @@
+import argparse
+import sys
+import unittest
+
+from tools import go_prod_acceptance as acceptance
+
+
+class GoProdAcceptanceTest(unittest.TestCase):
+    def test_build_commands_runs_systemd_kafka_and_http_smokes(self):
+        args = argparse.Namespace(
+            app_host="115.29.187.205",
+            kafka_host="114.55.58.251",
+            ssh_user="root",
+            base_url="http://115.29.187.205:20210",
+            date="2026-07-02",
+            timeout=8.0,
+            max_lag=100,
+        )
+
+        commands = acceptance.build_commands(args)
+
+        self.assertEqual(len(commands), 3)
+        self.assertEqual(commands[0].name, "systemd")
+        self.assertEqual(commands[0].argv[:2], [sys.executable, "tools/go_systemd_prod_smoke.py"])
+        self.assertIn("--host", commands[0].argv)
+        self.assertIn("115.29.187.205", commands[0].argv)
+        self.assertEqual(commands[1].name, "kafka")
+        self.assertIn("tools/go_kafka_prod_smoke.py", commands[1].argv)
+        self.assertIn("--max-lag", commands[1].argv)
+        self.assertEqual(commands[2].name, "http")
+        self.assertIn("tools/go_native_prod_smoke.py", commands[2].argv)
+        self.assertIn("--base-url", commands[2].argv)
+
+    def test_overall_status_fails_when_any_child_fails(self):
+        results = [
+            acceptance.ChildResult("systemd", "pass", 0, {"status": "pass"}),
+            acceptance.ChildResult("kafka", "fail", 1, {"status": "fail"}),
+        ]
+
+        self.assertEqual(acceptance.overall_status(results), "fail")
+
+    def test_overall_status_passes_when_all_children_pass(self):
+        results = [
+            acceptance.ChildResult("systemd", "pass", 0, {"status": "pass"}),
+            acceptance.ChildResult("kafka", "pass", 0, {"status": "pass"}),
+            acceptance.ChildResult("http", "pass", 0, {"status": "pass"}),
+        ]
+
+        self.assertEqual(acceptance.overall_status(results), "pass")
+
+
+if __name__ == "__main__":
+    unittest.main()
--- a/tools/test_go_systemd_prod_smoke.py
+++ b/tools/test_go_systemd_prod_smoke.py
@@ -0,0 +1,101 @@
+import unittest
+
+from tools import go_systemd_prod_smoke as smoke
+
+
+class GoSystemdProdSmokeTest(unittest.TestCase):
+    def test_service_checks_require_all_go_units_active(self):
+        output = """
+lingniu-go-gateway.service active enabled
+lingniu-go-history-writer.service active enabled
+lingniu-go-stat-writer.service active enabled
+lingniu-go-realtime-api.service active enabled
+"""
+
+        checks = smoke.service_checks(output, smoke.DEFAULT_SERVICES)
+
+        self.assertTrue(all(check.status == "pass" for check in checks))
+
+    def test_service_checks_fail_when_unit_is_missing_or_inactive(self):
+        output = """
+lingniu-go-gateway.service active enabled
+lingniu-go-history-writer.service failed enabled
+"""
+
+        checks = smoke.service_checks(output, smoke.DEFAULT_SERVICES)
+        by_name = {check.name: check for check in checks}
+
+        self.assertEqual(by_name["service.lingniu-go-history-writer.service"].status, "fail")
+        self.assertEqual(by_name["service.lingniu-go-stat-writer.service"].status, "fail")
+
+    def test_service_checks_fail_when_unit_is_not_enabled(self):
+        output = """
+lingniu-go-gateway.service active disabled
+lingniu-go-history-writer.service active enabled
+lingniu-go-stat-writer.service active enabled
+lingniu-go-realtime-api.service active enabled
+"""
+
+        checks = smoke.service_checks(output, smoke.DEFAULT_SERVICES)
+        by_name = {check.name: check for check in checks}
+
+        self.assertEqual(by_name["service.lingniu-go-gateway.service"].status, "fail")
+        self.assertIn("enabled=disabled", by_name["service.lingniu-go-gateway.service"].message)
+
+    def test_port_checks_require_expected_go_processes(self):
+        output = """
+LISTEN 0 4096 *:32960 *:* users:(("gateway",pid=10,fd=3))
+LISTEN 0 4096 *:808 *:* users:(("gateway",pid=10,fd=4))
+LISTEN 0 4096 *:20210 *:* users:(("realtime-api",pid=11,fd=3))
+"""
+
+        checks = smoke.port_checks(output, smoke.DEFAULT_PORTS)
+
+        self.assertTrue(all(check.status == "pass" for check in checks))
+
+    def test_port_checks_fail_when_java_owns_ingest_port(self):
+        output = """
+LISTEN 0 4096 *:808 *:* users:(("java",pid=20,fd=4))
+LISTEN 0 4096 *:32960 *:* users:(("gateway",pid=10,fd=3))
+LISTEN 0 4096 *:20210 *:* users:(("realtime-api",pid=11,fd=3))
+"""
+
+        checks = smoke.port_checks(output, smoke.DEFAULT_PORTS)
+        by_name = {check.name: check for check in checks}
+
+        self.assertEqual(by_name["port.808"].status, "fail")
+        self.assertIn("java", by_name["port.808"].message)
+
+    def test_spool_check_passes_when_no_pending_files(self):
+        check = smoke.spool_check("files=0 bytes=208896 recent=0")
+
+        self.assertEqual(check.status, "pass")
+        self.assertIn("files=0", check.message)
+
+    def test_spool_check_fails_when_pending_or_recent_files_exist(self):
+        for output in ["files=2 bytes=300 recent=0", "files=0 bytes=208896 recent=1"]:
+            check = smoke.spool_check(output)
+
+            self.assertEqual(check.status, "fail")
+
+    def test_release_check_passes_when_current_release_has_all_binaries(self):
+        check = smoke.release_check(
+            "current=/opt/lingniu-go-native/releases/8def635 "
+            "gateway=1 history-writer=1 stat-writer=1 realtime-api=1"
+        )
+
+        self.assertEqual(check.status, "pass")
+        self.assertIn("8def635", check.message)
+
+    def test_release_check_fails_when_binary_is_missing(self):
+        check = smoke.release_check(
+            "current=/opt/lingniu-go-native/releases/8def635 "
+            "gateway=1 history-writer=0 stat-writer=1 realtime-api=1"
+        )
+
+        self.assertEqual(check.status, "fail")
+        self.assertIn("history-writer=0", check.message)
+
+
+if __name__ == "__main__":
+    unittest.main()
Author	SHA1	Message	Date
lingniu	cbb6f3b741	perf: skip raw freshness count scan	2026-07-02 09:30:15 +08:00
lingniu	42de422935	test: check raw freshness without event date filter	2026-07-02 09:27:22 +08:00
lingniu	318486b1e9	fix: verify raw freshness by received time	2026-07-02 09:16:45 +08:00
lingniu	0a024f9a76	chore: wait for gateway spool before acceptance	2026-07-02 09:11:50 +08:00
lingniu	ea9d9f5d35	chore: add go native ecs deploy script	2026-07-02 08:50:19 +08:00
lingniu	409f55b5ae	test: verify go native release layout	2026-07-02 08:47:05 +08:00
lingniu	8def635bf5	test: verify realtime snapshots are fresh	2026-07-02 08:43:27 +08:00
lingniu	c211447747	test: verify daily metric formulas	2026-07-02 08:38:32 +08:00
lingniu	1741aacaaa	test: verify history rows link raw frames	2026-07-02 08:35:34 +08:00
lingniu	27f4ad3468	test: verify raw parsed json in production smoke	2026-07-02 02:00:50 +08:00
lingniu	601150b364	test: verify gateway spool is drained	2026-07-02 01:57:53 +08:00
lingniu	5b7f386c5a	test: verify go services are enabled	2026-07-02 01:55:39 +08:00
lingniu	f4d9c9ef5a	test: add go production acceptance smoke	2026-07-02 01:53:43 +08:00
lingniu	96514898eb	test: add go systemd production smoke	2026-07-02 01:51:41 +08:00
lingniu	0ef88e1a4c	test: add kafka production smoke	2026-07-02 01:49:02 +08:00
lingniu	0fd4d319f9	docs: record go kafka production topics	2026-07-02 01:44:27 +08:00
lingniu	4e8434c511	test: verify mqtt history tables in production smoke	2026-07-02 01:41:08 +08:00
lingniu	576644eb65	test: verify gb32960 history tables in production smoke	2026-07-02 01:39:45 +08:00
lingniu	9bd48c5781	test: require fresh raw data in production smoke	2026-07-02 01:38:16 +08:00
lingniu	2214abe9c5	test: include realtime in production smoke	2026-07-02 01:36:14 +08:00
lingniu	1477b997c9	test: add go native production smoke	2026-07-02 01:34:28 +08:00
lingniu	4ea8d18972	docs: document go native ecs deployment	2026-07-02 01:31:58 +08:00
lingniu	947e645090	fix: query history with utc tdengine filters	2026-07-02 01:28:45 +08:00
lingniu	78b805e3a2	fix: normalize timezone history filters	2026-07-02 01:24:51 +08:00
lingniu	a7b24f4c0b	feat: expose realtime snapshot protocols	2026-07-02 01:23:03 +08:00
lingniu	eb124d929b	fix: accept datetime-local history filters	2026-07-02 01:19:19 +08:00
lingniu	4711287655	fix: return empty arrays for query APIs	2026-07-02 01:16:48 +08:00
lingniu	2c224396c9	fix: return real pagination totals	2026-07-02 01:14:06 +08:00
lingniu	4f2cded760	fix: treat yutong mqtt mileage as meters	2026-07-02 01:08:59 +08:00
lingniu	7ad1a25e8e	fix: normalize yutong mqtt mileage units	2026-07-02 01:04:14 +08:00
lingniu	3ee1d6f52b	fix: stabilize yutong mqtt ingestion	2026-07-02 01:01:33 +08:00
lingniu	6d1d0aa85e	feat: write protocol acknowledgements from go gateway	2026-07-02 00:54:31 +08:00
lingniu	055373c405	fix: support extended gb32960 platform login	2026-07-02 00:47:01 +08:00
lingniu	e37dd39c89	fix: enrich jt808 location additional parsing	2026-07-02 00:36:51 +08:00
lingniu	dd73fdbb5b	feat: add vehicle mileage history query	2026-07-02 00:29:49 +08:00
lingniu	fb9ab8525a	feat: add vehicle location history query	2026-07-02 00:27:20 +08:00
lingniu	cc89e0d537	fix: filter raw frames by vehicle key	2026-07-02 00:24:53 +08:00
lingniu	f3ecf430cc	fix: cache realtime snapshots by vehicle key	2026-07-02 00:21:50 +08:00
lingniu	bcf7cdae2e	fix: key daily metrics by vehicle identity	2026-07-02 00:18:35 +08:00
lingniu	9045b871d6	fix: align jt808 parser with protocol variants	2026-07-02 00:14:02 +08:00
lingniu	b0150a5503	docs: record yutong mqtt eof diagnosis	2026-07-02 00:04:23 +08:00
lingniu	8f3b337fd6	docs: add native go deployment runbook	2026-07-02 00:02:21 +08:00
lingniu	594ab2d9c7	feat: support yutong mqtt tls config	2026-07-01 23:50:30 +08:00
lingniu	229ffcf61f	docs: record go production port verification	2026-07-01 23:46:33 +08:00
lingniu	593713283c	fix: query tdengine raw frames with literals	2026-07-01 23:42:09 +08:00
lingniu	6bee0499ae	feat: expose raw frame query api	2026-07-01 23:39:10 +08:00