feat(DBNMQTTool): 脱机事件日志命令支持 — log_stat/log_query/log_clear (MQTT V1.06)

- protocol.py: CMD_LOG_* 常量 + LOG_COMMANDS + data_log_query 边界钳制
  (start_seq>=1, count 1~4) + LOG_EVENT_TYPE_DESC 事件类型中文描述
- main.py: 参数配置 Tab 新增脱机日志面板 (统计/拉取/清除 + 显示区)
- _on_message 响应分发: log_stat 统计展示, log_query 记录格式化
  (unix_ts 真实时间 / boot+ts_ms 未同步), log_clear 二次确认
- devlog 追加

DBNMQTTool/dbn_mqtt_tool/protocol.py

@@ -61,6 +61,11 @@ CMD_LOOP_PARAM_SET   = "loop_param_set"
 CMD_LOOP_PARAM_QUERY = "loop_param_query"
 CMD_REPORT_CONFIG    = "report_config"
 
+# V1.06: 脱机事件日志
+CMD_LOG_STAT   = "log_stat"
+CMD_LOG_QUERY  = "log_query"
+CMD_LOG_CLEAR  = "log_clear"
+
 # 设备上报
 CMD_LOOP_DATA    = "loop_data"
 CMD_EVENT_REPORT = "event_report"
@@ -71,6 +76,7 @@ CMD_INITIALIZE   = "initialize"      # V1.03: 设备上电初始化
 CONFIG_SET_COMMANDS = {CMD_DEV_SERIAL_SET, CMD_SSC_NET_SET, CMD_IOT_NET_SET, CMD_IOT_TOPIC_SET, CMD_LOOP_PARAM_SET}
 CONFIG_QUERY_COMMANDS = {CMD_DEV_INFO_QUERY, CMD_SSC_NET_QUERY, CMD_IOT_NET_QUERY, CMD_IOT_TOPIC_QUERY, CMD_LOOP_PARAM_QUERY}
 CTRL_COMMANDS = {CMD_PWD_VERIFY, CMD_PWD_SET, CMD_FACTORY_RESET, CMD_DEVICE_RESET, CMD_REPORT_CONFIG}
+LOG_COMMANDS = {CMD_LOG_STAT, CMD_LOG_QUERY, CMD_LOG_CLEAR}   # V1.06 脱机日志
 
 
 # ============================================================
@@ -104,6 +110,21 @@ FREQ_LEVELS = ["high", "mid_high", "mid_low", "low"]
 OUTPUT_MODES = ["exist", "enter_pulse", "leave_pulse", "direction"]
 EVENT_TYPES = ["car_enter", "car_leave", "loop_cut", "loop_restore"]
 
+# 脱机事件日志类型描述 (log_query 响应 records[].type, MQTT V1.06)
+LOG_EVENT_TYPE_DESC = {
+    "boot": "上电/复位",
+    "iot_connect": "MQTT TCP 连接成功",
+    "iot_ready": "MQTT 订阅完成→发 initialize",
+    "iot_disconnect": "MQTT 断连",
+    "iot_reconn": "重连退避",
+    "evt_retry": "event ACK 超时重发",
+    "evt_giveup": "event 重试耗尽挂起",
+    "coil": "线圈事件",
+    "time_anchor": "时钟同步锚点",
+    "log_clear": "日志清除(审计)",
+    "unknown": "未知类型",
+}
+
 
 # ============================================================
 # 消息构建
@@ -214,6 +235,14 @@ def data_report_config(sensor_type: int = 12, enable: bool = True,
     }
 
 
+def data_log_query(start_seq: int = 1, count: int = 4) -> dict:
+    """V1.06 log_query 分页拉取脱机事件日志 (count 上限 4, 设备侧超限按 4 处理)"""
+    return {
+        "start_seq": max(1, int(start_seq)),
+        "count": min(4, max(1, int(count))),
+    }
+
+
 # ============================================================
 # 解析设备上报
 # ============================================================

DBNMQTTool/docs/devlog.md

@@ -139,3 +139,30 @@ DBNMQTTool/
 - **主动上报配置**: `report_config` 面板支持完整 7 参数独立开关
 - `right` 局部变量 → `self._notebook`，修复 tab 引用丢失
 
+
+---
+
+## 2026-08-05 — 脱机事件日志命令支持 (MQTT V1.06)
+
+配合 vd960DBN 固件 P1.3（commit 1a01316）+ 协议 V1.06，工具新增脱机事件日志面板（参数配置 Tab 底部）：
+
+### 新增命令
+
+| 命令 | 按钮 | 说明 |
+|------|------|------|
+| `log_stat` | 统计 | 日志统计/分页定位: enabled/boot_seq/count/capacity/seq_first/seq_last |
+| `log_query` | 拉取日志 | 按全局序号分页拉取, 起始序号 + 条数(1~4) 可调 |
+| `log_clear` | 清除日志 | 二次确认弹窗, 审计留痕不可撤销 |
+
+### 实现要点
+
+- `protocol.py`: 新增 `CMD_LOG_*` 常量、`LOG_COMMANDS` 集合、`data_log_query()` 构建器（start_seq≥1 / count 1~4 边界钳制）、`LOG_EVENT_TYPE_DESC` 事件类型中文描述（10 类 + unknown）
+- `main.py`: 参数配置 Tab 新增 g6 组（起始序号/条数 spinbox + 三按钮 + 只读显示区 QPlainTextEdit）
+- `_on_message` code==0 分支新增 `log_stat`/`log_query`/`log_clear` 响应处理
+- 显示优化: log_query 记录带事件类型中文描述; unix_ts 已同步显示真实时间, 未同步显示 `boot+ts_ms(未同步)`
+- 清除日志前 QMessageBox 二次确认（防误触, 与出厂初始化/设备复位同模式）
+
+### 验证
+
+- `py_compile` 四个模块通过
+- protocol 逻辑单测: data_log_query 边界钳制 (0→1, 99→4, 0→1)、命令枚举一致性、build_request 带 data

DBNMQTTool/main.py

@@ -31,9 +31,10 @@ from dbn_mqtt_tool.protocol import (
     CMD_SSC_NET_SET, CMD_IOT_NET_SET, CMD_IOT_TOPIC_SET,
     CMD_PWD_VERIFY, CMD_PWD_SET, CMD_FACTORY_RESET, CMD_DEVICE_RESET,
     CMD_LOOP_DATA, CMD_EVENT_REPORT, CMD_HEARTBEAT, CMD_INITIALIZE,
-    ERROR_MSGS, FREQ_LEVELS, OUTPUT_MODES, EVENT_TYPES,
+    CMD_LOG_STAT, CMD_LOG_QUERY, CMD_LOG_CLEAR,
+    ERROR_MSGS, FREQ_LEVELS, OUTPUT_MODES, EVENT_TYPES, LOG_EVENT_TYPE_DESC,
     data_ssc_net_set, data_iot_net_set, data_iot_topic_set,
-    data_pwd_verify, data_pwd_set, data_report_config,
+    data_pwd_verify, data_pwd_set, data_report_config, data_log_query,
     build_request, next_msg_id,
     topic_down, topic_up,
 )
@@ -326,6 +327,42 @@ class MainWindow(QMainWindow):
         g5_layout.addLayout(btn_row5, 2, 0, 1, 6)
         layout.addWidget(g5)
 
+        # -- 脱机事件日志 (V1.06) --
+        g6 = QGroupBox("脱机事件日志 (log_stat / log_query / log_clear)")
+        g6_layout = QGridLayout(g6)
+
+        g6_layout.addWidget(QLabel("起始序号:"), 0, 0)
+        self._edit_log_start_seq = QSpinBox()
+        self._edit_log_start_seq.setRange(1, 2**31 - 1)
+        self._edit_log_start_seq.setValue(1)
+        g6_layout.addWidget(self._edit_log_start_seq, 0, 1)
+
+        g6_layout.addWidget(QLabel("条数:"), 0, 2)
+        self._edit_log_count = QSpinBox()
+        self._edit_log_count.setRange(1, 4)
+        self._edit_log_count.setValue(4)
+        g6_layout.addWidget(self._edit_log_count, 0, 3)
+
+        btn_row6 = QHBoxLayout()
+        b9 = QPushButton("统计")
+        b9.clicked.connect(self._query_log_stat)
+        b10 = QPushButton("拉取日志")
+        b10.clicked.connect(self._query_log)
+        b11 = QPushButton("清除日志")
+        b11.clicked.connect(self._clear_log)
+        btn_row6.addWidget(b9)
+        btn_row6.addWidget(b10)
+        btn_row6.addWidget(b11)
+        btn_row6.addStretch()
+        g6_layout.addLayout(btn_row6, 1, 0, 1, 4)
+
+        self._log_rec_text = QPlainTextEdit()
+        self._log_rec_text.setReadOnly(True)
+        self._log_rec_text.setMaximumHeight(150)
+        self._log_rec_text.setFont(QFont("Consolas", 9))
+        g6_layout.addWidget(self._log_rec_text, 2, 0, 1, 4)
+        layout.addWidget(g6)
+
         layout.addStretch()
         return w
 
@@ -873,6 +910,12 @@ class MainWindow(QMainWindow):
                     self._show_json({cmd: data})
                 elif cmd == CMD_REPORT_CONFIG:
                     self._apply_report_config_data(data)
+                elif cmd == CMD_LOG_STAT:
+                    self._apply_log_stat_data(data)
+                elif cmd == CMD_LOG_QUERY:
+                    self._apply_log_query_data(data)
+                elif cmd == CMD_LOG_CLEAR:
+                    self._log(f"脱机日志已清除 (审计留痕, 需重新统计确认)")
             else:
                 self._show_json({"error": f"code={code} {pmsg} ({ERROR_MSGS.get(code, '?')})"})
 
@@ -1078,6 +1121,62 @@ class MainWindow(QMainWindow):
             timeout=self._edit_report_timeout.value(),
         ))
 
+    # ---- 脱机事件日志 (V1.06) ----
+
+    def _query_log_stat(self):
+        """log_stat: 日志统计/分页定位"""
+        self._send_cmd(CMD_LOG_STAT)
+
+    def _query_log(self):
+        """log_query: 按全局序号分页拉取 (count≤4)"""
+        self._send_cmd(CMD_LOG_QUERY, data_log_query(
+            start_seq=self._edit_log_start_seq.value(),
+            count=self._edit_log_count.value(),
+        ))
+
+    def _clear_log(self):
+        """log_clear: 清除脱机日志 (审计留痕, 设备侧阻塞 ~2.8s)"""
+        r = QMessageBox.question(self, "确认",
+                                 "确定要清除设备脱机事件日志吗？\n"
+                                 "清除动作本身会写入审计记录，不可撤销！",
+                                 QMessageBox.Yes | QMessageBox.No)
+        if r == QMessageBox.Yes:
+            self._send_cmd(CMD_LOG_CLEAR)
+
+    def _apply_log_stat_data(self, data: dict):
+        lines = [
+            f"日志统计: enabled={data.get('enabled', False)}  boot_seq={data.get('boot_seq', 0)}",
+            f"记录数: {data.get('count', 0)} / {data.get('capacity', 0)}",
+            f"全局序号范围: {data.get('seq_first', 0)} ~ {data.get('seq_last', 0)}",
+            f"提示: 拉取日志用 log_query, 起始序号填 seq_first",
+        ]
+        self._log_rec_text.setPlainText("\n".join(lines))
+        self._log(f"log_stat: count={data.get('count', 0)} seq={data.get('seq_first', 0)}~{data.get('seq_last', 0)}")
+
+    def _apply_log_query_data(self, data: dict):
+        records = data.get("records", [])
+        start_seq = data.get("start_seq", 0)
+        lines = [f"log_query start_seq={start_seq} → 返回 {len(records)} 条:"]
+        for rec in records:
+            rtype = rec.get("type", "?")
+            desc = LOG_EVENT_TYPE_DESC.get(rtype, rtype)
+            ts_ms = rec.get("ts_ms", 0)
+            unix_ts = rec.get("unix_ts", 0)
+            if unix_ts:
+                ts_str = datetime.fromtimestamp(unix_ts).strftime("%Y-%m-%d %H:%M:%S")
+            else:
+                ts_str = f"boot+{ts_ms}ms (未同步)"
+            rdata = rec.get("data")
+            data_str = json.dumps(rdata, ensure_ascii=False) if rdata else ""
+            lines.append(
+                f"  seq={rec.get('seq', 0)} boot={rec.get('boot_seq', 0)} "
+                f"{ts_str} [{desc}] {data_str}"
+            )
+        if not records:
+            lines.append("  (无记录 / 起始序号越界, 可先用 log_stat 确认范围)")
+        self._log_rec_text.setPlainText("\n".join(lines))
+        self._log(f"log_query: start_seq={start_seq} got {len(records)}")
+
     # ================================================================
     # UI 更新
     # ================================================================