docs: add Fast DDS 164 implementation plan

2026-07-23 15:43:42 +08:00
parent 64d8ac6c44
commit 381d186b66
1 changed files with 577 additions and 0 deletions
--- a/docs/crucial_change/2026-07-23-fastdds-164-network-change.md
+++ b/docs/crucial_change/2026-07-23-fastdds-164-network-change.md
@@ -174,3 +174,580 @@ source /home/hikos/Yiliao2026/config/dds/use_wsl_dds_164_link.sh
 - `.210` 上的 SSH 和 VS Code 管理链路保持可用。
 - 未修改路由表、系统启动文件、现有 ROS package 或 Nav2 参数。
 - 所有实际修改、验证和回滚方式均记录在本文件中。
+
+# Fast DDS `.164` 专用链路实施计划
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** 让从专用环境启动的 WSL 与 RDKx5 ROS 2 participant 只通过 `.151 <-> .164` 交换跨主机 DDS 数据，同时保持 `.210` 的管理链路不变。
+
+**Architecture:** 双端保持 `rmw_fastrtps_cpp` 和 Domain 22，分别加载一个 Fast DDS 默认 participant profile。profile 保留 SHM 供同主机通信，并用带接口白名单的自定义 UDPv4 transport 约束跨主机通信；sourceable Bash 脚本负责前置检查和环境变量设置。
+
+**Tech Stack:** ROS 2 Humble、Fast DDS 2.6.x、Bash、Fast DDS XML profiles、`tcpdump`、Git。
+
+---
+
+## 文件职责
+
+- `/home/sunrise/yiliao_ws/config/dds/fastdds_rdk_164.xml`：RDKx5 participant transport，只允许 UDPv4 使用 `.164`，peer 为 WSL `.151`。
+- `/home/sunrise/yiliao_ws/config/dds/use_rdk_dds_164.sh`：验证 RDKx5 网卡和 XML 后，导出 Domain、RMW 和 profile 环境变量。
+- `/home/hikos/Yiliao2026/config/dds/fastdds_wsl_151.xml`：WSL participant transport，只允许 UDPv4 使用 `.151`，peer 为 RDKx5 `.164`。
+- `/home/hikos/Yiliao2026/config/dds/use_wsl_dds_164_link.sh`：验证 WSL 网卡和 XML 后，导出 Domain、RMW 和 profile 环境变量。
+- `/home/sunrise/yiliao_ws/docs/crucial_change/2026-07-23-fastdds-164-network-change.md`：设计、计划、实际变更、证据、提交号和回滚命令的唯一记录。
+
+### Task 1：实施前保护与基线
+
+**Files:**
+
+- Modify: `/home/sunrise/yiliao_ws/docs/crucial_change/2026-07-23-fastdds-164-network-change.md`
+
+- [ ] **Step 1：确认目标文件不会被覆盖**
+
+在 RDKx5 执行：
+
+```bash
+for path in \
+  /home/sunrise/yiliao_ws/config/dds/fastdds_rdk_164.xml \
+  /home/sunrise/yiliao_ws/config/dds/use_rdk_dds_164.sh; do
+  if [ -e "$path" ]; then
+    echo "STOP: existing file: $path" >&2
+    exit 1
+  fi
+done
+```
+
+在 WSL 执行：
+
+```bash
+for path in \
+  /home/hikos/Yiliao2026/config/dds/fastdds_wsl_151.xml \
+  /home/hikos/Yiliao2026/config/dds/use_wsl_dds_164_link.sh; do
+  if [ -e "$path" ]; then
+    echo "STOP: existing file: $path" >&2
+    exit 1
+  fi
+done
+```
+
+Expected：两段命令均无输出且返回 `0`。任何文件已存在都停止实施，先将其路径、SHA-256 和内容写入本文件，不能覆盖。
+
+- [ ] **Step 2：采集最小基线**
+
+RDKx5：
+
+```bash
+ip -br -4 addr
+ip -4 route
+source /opt/ros/humble/setup.bash
+python3 -c 'from rclpy.utilities import get_rmw_implementation_identifier; print(get_rmw_implementation_identifier())'
+grep -n 'ROS_DOMAIN_ID' /home/sunrise/.bashrc
+git -C /home/sunrise/yiliao_ws status --short
+```
+
+WSL：
+
+```bash
+ip -br -4 addr
+ip -4 route get 192.168.10.164
+source /opt/ros/humble/setup.bash
+python3 -c 'from rclpy.utilities import get_rmw_implementation_identifier; print(get_rmw_implementation_identifier())'
+git -C /home/hikos/Yiliao2026 status --short
+```
+
+Expected：RDKx5 存在 `.164` 和 `.210`，WSL 存在 `.151`，双方 RMW 均为 `rmw_fastrtps_cpp`。记录现有 dirty files，后续提交不得包含它们。
+
+- [ ] **Step 3：把基线摘要追加到唯一变更文档**
+
+用 `apply_patch` 在本文件末尾增加 `## 实施记录` 和 `### 实施前基线`，写入上述命令的关键输出、实施开始时间以及“目标文件原先不存在”。不要粘贴无关的大段 package 列表。
+
+- [ ] **Step 4：提交基线记录**
+
+```bash
+cd /home/sunrise/yiliao_ws
+git add -- docs/crucial_change/2026-07-23-fastdds-164-network-change.md
+git diff --cached --check
+git diff --cached --name-only
+git commit -m "docs: record Fast DDS network baseline" -- \
+  docs/crucial_change/2026-07-23-fastdds-164-network-change.md
+```
+
+Expected：待提交文件列表只有该 Markdown 文档。
+
+### Task 2：RDKx5 Fast DDS 配置
+
+**Files:**
+
+- Create: `/home/sunrise/yiliao_ws/config/dds/fastdds_rdk_164.xml`
+- Create: `/home/sunrise/yiliao_ws/config/dds/use_rdk_dds_164.sh`
+- Modify: `/home/sunrise/yiliao_ws/docs/crucial_change/2026-07-23-fastdds-164-network-change.md`
+
+- [ ] **Step 1：运行存在性测试并确认失败**
+
+```bash
+test -f /home/sunrise/yiliao_ws/config/dds/fastdds_rdk_164.xml && \
+test -f /home/sunrise/yiliao_ws/config/dds/use_rdk_dds_164.sh
+```
+
+Expected：返回非零，因为两个文件尚未创建。
+
+- [ ] **Step 2：创建 RDKx5 XML**
+
+创建目录 `/home/sunrise/yiliao_ws/config/dds`：
+
+```bash
+mkdir -p /home/sunrise/yiliao_ws/config/dds
+```
+
+然后用 `apply_patch` 创建 `fastdds_rdk_164.xml`，完整内容为：
+
+```xml
+<?xml version="1.0" encoding="UTF-8" ?>
+<profiles xmlns="http://www.eprosima.com/XMLSchemas/fastRTPS_Profiles">
+  <transport_descriptors>
+    <transport_descriptor>
+      <transport_id>rdk_udp_164</transport_id>
+      <type>UDPv4</type>
+      <interfaceWhiteList>
+        <address>192.168.10.164</address>
+      </interfaceWhiteList>
+    </transport_descriptor>
+    <transport_descriptor>
+      <transport_id>rdk_shm</transport_id>
+      <type>SHM</type>
+    </transport_descriptor>
+  </transport_descriptors>
+
+  <participant profile_name="rdk_dds_164" is_default_profile="true">
+    <rtps>
+      <builtin>
+        <initialPeersList>
+          <locator>
+            <udpv4>
+              <address>192.168.10.151</address>
+            </udpv4>
+          </locator>
+        </initialPeersList>
+      </builtin>
+      <userTransports>
+        <transport_id>rdk_udp_164</transport_id>
+        <transport_id>rdk_shm</transport_id>
+      </userTransports>
+      <useBuiltinTransports>false</useBuiltinTransports>
+    </rtps>
+  </participant>
+</profiles>
+```
+
+- [ ] **Step 3：创建 RDKx5 环境脚本**
+
+用 `apply_patch` 创建 `use_rdk_dds_164.sh`，完整内容为：
+
+```bash
+#!/usr/bin/env bash
+
+if [[ "${BASH_SOURCE[0]}" == "$0" ]]; then
+  echo "ERROR: source this file instead of executing it" >&2
+  exit 64
+fi
+
+_rdk_dds_profile="/home/sunrise/yiliao_ws/config/dds/fastdds_rdk_164.xml"
+
+if ! ip -4 addr show dev wlx200db0c3fca5 2>/dev/null | grep -q 'inet 192\.168\.10\.164/'; then
+  echo "ERROR: wlx200db0c3fca5 does not own 192.168.10.164" >&2
+  unset _rdk_dds_profile
+  return 1
+fi
+
+if [[ ! -r "${_rdk_dds_profile}" ]]; then
+  echo "ERROR: unreadable Fast DDS profile: ${_rdk_dds_profile}" >&2
+  unset _rdk_dds_profile
+  return 1
+fi
+
+export ROS_DOMAIN_ID=22
+export RMW_IMPLEMENTATION=rmw_fastrtps_cpp
+export ROS_LOCALHOST_ONLY=0
+export FASTRTPS_DEFAULT_PROFILES_FILE="${_rdk_dds_profile}"
+export FASTDDS_DEFAULT_PROFILES_FILE="${_rdk_dds_profile}"
+
+printf 'DDS link enabled: domain=%s rmw=%s local=192.168.10.164 profile=%s\n' \
+  "${ROS_DOMAIN_ID}" "${RMW_IMPLEMENTATION}" "${_rdk_dds_profile}"
+unset _rdk_dds_profile
+```
+
+设置权限：
+
+```bash
+chmod 0644 /home/sunrise/yiliao_ws/config/dds/fastdds_rdk_164.xml
+chmod 0755 /home/sunrise/yiliao_ws/config/dds/use_rdk_dds_164.sh
+```
+
+- [ ] **Step 4：验证语法和 Fast DDS 实际加载**
+
+```bash
+bash -n /home/sunrise/yiliao_ws/config/dds/use_rdk_dds_164.sh
+python3 -c "import xml.etree.ElementTree as ET; ET.parse('/home/sunrise/yiliao_ws/config/dds/fastdds_rdk_164.xml'); print('XML well-formed')"
+source /opt/ros/humble/setup.bash
+source /home/sunrise/yiliao_ws/config/dds/use_rdk_dds_164.sh
+python3 -c "import rclpy; rclpy.init(); n=rclpy.create_node('rdk_dds_profile_check'); print('RMW participant created'); n.destroy_node(); rclpy.shutdown()"
+```
+
+Expected：依次输出 `XML well-formed`、环境摘要和 `RMW participant created`，stderr 中没有 XML profile 或 transport 错误。
+
+- [ ] **Step 5：记录 RDKx5 文件内容与校验值**
+
+```bash
+sha256sum \
+  /home/sunrise/yiliao_ws/config/dds/fastdds_rdk_164.xml \
+  /home/sunrise/yiliao_ws/config/dds/use_rdk_dds_164.sh
+```
+
+用 `apply_patch` 在本文件的实施记录中加入两个文件的完整内容、权限、SHA-256 和 Step 4 的结果。
+
+- [ ] **Step 6：只提交 RDKx5 配置和文档**
+
+```bash
+cd /home/sunrise/yiliao_ws
+git add -- \
+  config/dds/fastdds_rdk_164.xml \
+  config/dds/use_rdk_dds_164.sh \
+  docs/crucial_change/2026-07-23-fastdds-164-network-change.md
+git diff --cached --check
+git diff --cached --name-only
+git commit -m "feat: add dedicated Fast DDS 164 profile" -- \
+  config/dds/fastdds_rdk_164.xml \
+  config/dds/use_rdk_dds_164.sh \
+  docs/crucial_change/2026-07-23-fastdds-164-network-change.md
+```
+
+Expected：提交只包含上述三个路径。
+
+### Task 3：WSL Fast DDS 配置
+
+**Files:**
+
+- Create: `/home/hikos/Yiliao2026/config/dds/fastdds_wsl_151.xml`
+- Create: `/home/hikos/Yiliao2026/config/dds/use_wsl_dds_164_link.sh`
+- Modify: `/home/sunrise/yiliao_ws/docs/crucial_change/2026-07-23-fastdds-164-network-change.md`
+
+- [ ] **Step 1：运行存在性测试并确认失败**
+
+```bash
+test -f /home/hikos/Yiliao2026/config/dds/fastdds_wsl_151.xml && \
+test -f /home/hikos/Yiliao2026/config/dds/use_wsl_dds_164_link.sh
+```
+
+Expected：返回非零，因为两个文件尚未创建。
+
+- [ ] **Step 2：创建 WSL XML**
+
+创建目录 `/home/hikos/Yiliao2026/config/dds`：
+
+```bash
+mkdir -p /home/hikos/Yiliao2026/config/dds
+```
+
+然后用 `apply_patch` 创建 `fastdds_wsl_151.xml`，完整内容为：
+
+```xml
+<?xml version="1.0" encoding="UTF-8" ?>
+<profiles xmlns="http://www.eprosima.com/XMLSchemas/fastRTPS_Profiles">
+  <transport_descriptors>
+    <transport_descriptor>
+      <transport_id>wsl_udp_151</transport_id>
+      <type>UDPv4</type>
+      <interfaceWhiteList>
+        <address>192.168.10.151</address>
+      </interfaceWhiteList>
+    </transport_descriptor>
+    <transport_descriptor>
+      <transport_id>wsl_shm</transport_id>
+      <type>SHM</type>
+    </transport_descriptor>
+  </transport_descriptors>
+
+  <participant profile_name="wsl_dds_151" is_default_profile="true">
+    <rtps>
+      <builtin>
+        <initialPeersList>
+          <locator>
+            <udpv4>
+              <address>192.168.10.164</address>
+            </udpv4>
+          </locator>
+        </initialPeersList>
+      </builtin>
+      <userTransports>
+        <transport_id>wsl_udp_151</transport_id>
+        <transport_id>wsl_shm</transport_id>
+      </userTransports>
+      <useBuiltinTransports>false</useBuiltinTransports>
+    </rtps>
+  </participant>
+</profiles>
+```
+
+- [ ] **Step 3：创建 WSL 环境脚本**
+
+用 `apply_patch` 创建 `use_wsl_dds_164_link.sh`，完整内容为：
+
+```bash
+#!/usr/bin/env bash
+
+if [[ "${BASH_SOURCE[0]}" == "$0" ]]; then
+  echo "ERROR: source this file instead of executing it" >&2
+  exit 64
+fi
+
+_wsl_dds_profile="/home/hikos/Yiliao2026/config/dds/fastdds_wsl_151.xml"
+
+if ! ip -4 addr show dev eth4 2>/dev/null | grep -q 'inet 192\.168\.10\.151/'; then
+  echo "ERROR: eth4 does not own 192.168.10.151" >&2
+  unset _wsl_dds_profile
+  return 1
+fi
+
+if [[ ! -r "${_wsl_dds_profile}" ]]; then
+  echo "ERROR: unreadable Fast DDS profile: ${_wsl_dds_profile}" >&2
+  unset _wsl_dds_profile
+  return 1
+fi
+
+export ROS_DOMAIN_ID=22
+export RMW_IMPLEMENTATION=rmw_fastrtps_cpp
+export ROS_LOCALHOST_ONLY=0
+export FASTRTPS_DEFAULT_PROFILES_FILE="${_wsl_dds_profile}"
+export FASTDDS_DEFAULT_PROFILES_FILE="${_wsl_dds_profile}"
+
+printf 'DDS link enabled: domain=%s rmw=%s local=192.168.10.151 peer=192.168.10.164 profile=%s\n' \
+  "${ROS_DOMAIN_ID}" "${RMW_IMPLEMENTATION}" "${_wsl_dds_profile}"
+unset _wsl_dds_profile
+```
+
+设置权限：
+
+```bash
+chmod 0644 /home/hikos/Yiliao2026/config/dds/fastdds_wsl_151.xml
+chmod 0755 /home/hikos/Yiliao2026/config/dds/use_wsl_dds_164_link.sh
+```
+
+- [ ] **Step 4：验证语法和 Fast DDS 实际加载**
+
+```bash
+bash -n /home/hikos/Yiliao2026/config/dds/use_wsl_dds_164_link.sh
+python3 -c "import xml.etree.ElementTree as ET; ET.parse('/home/hikos/Yiliao2026/config/dds/fastdds_wsl_151.xml'); print('XML well-formed')"
+source /opt/ros/humble/setup.bash
+source /home/hikos/Yiliao2026/config/dds/use_wsl_dds_164_link.sh
+python3 -c "import rclpy; rclpy.init(); n=rclpy.create_node('wsl_dds_profile_check'); print('RMW participant created'); n.destroy_node(); rclpy.shutdown()"
+```
+
+Expected：依次输出 `XML well-formed`、环境摘要和 `RMW participant created`，stderr 中没有 XML profile 或 transport 错误。
+
+- [ ] **Step 5：记录 WSL 文件并提交**
+
+```bash
+sha256sum \
+  /home/hikos/Yiliao2026/config/dds/fastdds_wsl_151.xml \
+  /home/hikos/Yiliao2026/config/dds/use_wsl_dds_164_link.sh
+cd /home/hikos/Yiliao2026
+git add -- \
+  config/dds/fastdds_wsl_151.xml \
+  config/dds/use_wsl_dds_164_link.sh
+git diff --cached --check
+git diff --cached --name-only
+git commit -m "feat: bind WSL Fast DDS to 192.168.10.151" -- \
+  config/dds/fastdds_wsl_151.xml \
+  config/dds/use_wsl_dds_164_link.sh
+git rev-parse HEAD
+```
+
+Expected：提交只包含两个 WSL 配置文件。用 `apply_patch` 把文件完整内容、权限、SHA-256、加载验证结果和 WSL commit 写入 RDKx5 的唯一变更文档，然后单独提交该文档：
+
+```bash
+cd /home/sunrise/yiliao_ws
+git add -- docs/crucial_change/2026-07-23-fastdds-164-network-change.md
+git diff --cached --check
+git diff --cached --name-only
+git commit -m "docs: record WSL Fast DDS deployment" -- \
+  docs/crucial_change/2026-07-23-fastdds-164-network-change.md
+```
+
+Expected：RDKx5 本次提交只包含该 Markdown 文档。
+
+### Task 4：双向通信与网卡检查
+
+**Files:**
+
+- Modify: `/home/sunrise/yiliao_ws/docs/crucial_change/2026-07-23-fastdds-164-network-change.md`
+
+- [ ] **Step 1：清理 ROS 2 daemon 并加载双方环境**
+
+RDKx5：
+
+```bash
+source /opt/ros/humble/setup.bash
+source /home/sunrise/yiliao_ws/install/setup.bash
+source /home/sunrise/yiliao_ws/config/dds/use_rdk_dds_164.sh
+ros2 daemon stop || true
+```
+
+WSL：
+
+```bash
+source /opt/ros/humble/setup.bash
+source /home/hikos/Yiliao2026/config/dds/use_wsl_dds_164_link.sh
+ros2 daemon stop || true
+```
+
+Expected：两个终端显示 Domain 22、Fast DDS 和各自本地专用地址。
+
+- [ ] **Step 2：验证 WSL 到 RDKx5**
+
+先在 RDKx5 运行：
+
+```bash
+timeout 20 ros2 topic echo /dds_164_smoke_20260723 std_msgs/msg/String --once
+```
+
+随后在 WSL 运行：
+
+```bash
+ros2 topic pub --once /dds_164_smoke_20260723 std_msgs/msg/String "{data: wsl_to_rdk}"
+```
+
+Expected：RDKx5 输出 `data: wsl_to_rdk`。
+
+- [ ] **Step 3：验证 RDKx5 到 WSL**
+
+先在 WSL 运行：
+
+```bash
+timeout 20 ros2 topic echo /dds_164_smoke_return_20260723 std_msgs/msg/String --once
+```
+
+随后在 RDKx5 运行：
+
+```bash
+ros2 topic pub --once /dds_164_smoke_return_20260723 std_msgs/msg/String "{data: rdk_to_wsl}"
+```
+
+Expected：WSL 输出 `data: rdk_to_wsl`。
+
+- [ ] **Step 4：确认 DDS 使用 `.164` 而非 `.210`**
+
+在 RDKx5 两个终端同时开始短抓包：
+
+```bash
+sudo timeout 15 tcpdump -ni wlx200db0c3fca5 -c 5 'udp and host 192.168.10.151'
+```
+
+```bash
+sudo timeout 15 tcpdump -ni wlan0 -c 1 'udp and host 192.168.10.151'
+```
+
+抓包期间重复 Step 2 的一次发布。Expected：`wlx200db0c3fca5` 捕获到 UDP；`wlan0` 超时且捕获 `0 packets`。当前 SSH 命令仍能返回：
+
+```bash
+ssh sunrise@192.168.10.210 'echo management-link-ok'
+```
+
+- [ ] **Step 5：记录并提交精简验证结果**
+
+用 `apply_patch` 写入双向消息结果、两张网卡的抓包摘要和 `management-link-ok`。如果任一步失败，停止到 Task 6 的快速回滚，不启动 Nav2。
+
+```bash
+cd /home/sunrise/yiliao_ws
+git add -- docs/crucial_change/2026-07-23-fastdds-164-network-change.md
+git diff --cached --check
+git commit -m "docs: record dedicated DDS link verification" -- \
+  docs/crucial_change/2026-07-23-fastdds-164-network-change.md
+```
+
+### Task 5：实际 `obstacle_nav2` 最小验证
+
+**Files:**
+
+- Modify: `/home/sunrise/yiliao_ws/docs/crucial_change/2026-07-23-fastdds-164-network-change.md`
+
+- [ ] **Step 1：安全启动 Nav2**
+
+在已加载 RDKx5 专用 DDS 环境的终端运行：
+
+```bash
+ros2 launch obstacle_nav2 obstacle_nav2.launch.py enable_motion:=false
+```
+
+Expected：launch 启动，真实底盘速度输出仍映射到 `/cmd_vel_disabled`。
+
+- [ ] **Step 2：WSL 检查关键话题**
+
+在已加载 WSL 专用 DDS 环境的终端运行：
+
+```bash
+ros2 topic list | grep -E '^/obstacles$|^/local_costmap/costmap$|^/global_costmap/costmap$'
+```
+
+Expected：至少出现 `/obstacles`，并出现 local/global costmap 话题；如果当前 Nav2 使用 `costmap_raw` 命名，则记录实际名称，不修改 Nav2 参数。
+
+- [ ] **Step 3：结束测试并记录结果**
+
+使用 `Ctrl+C` 正常停止本次 launch。用 `apply_patch` 记录启动命令、关键话题、停止方式和最终结论；不执行运动目标、不修改 costmap 参数。
+
+- [ ] **Step 4：提交最终记录**
+
+```bash
+cd /home/sunrise/yiliao_ws
+git add -- docs/crucial_change/2026-07-23-fastdds-164-network-change.md
+git diff --cached --check
+git commit -m "docs: finalize Fast DDS 164 deployment record" -- \
+  docs/crucial_change/2026-07-23-fastdds-164-network-change.md
+```
+
+### Task 6：回滚演练说明与最终核对
+
+**Files:**
+
+- Modify: `/home/sunrise/yiliao_ws/docs/crucial_change/2026-07-23-fastdds-164-network-change.md`
+
+- [ ] **Step 1：写明快速回滚命令**
+
+停止由专用环境启动的 ROS 节点后，在当前终端执行：
+
+```bash
+unset FASTRTPS_DEFAULT_PROFILES_FILE
+unset FASTDDS_DEFAULT_PROFILES_FILE
+unset RMW_IMPLEMENTATION
+unset ROS_LOCALHOST_ONLY
+export ROS_DOMAIN_ID=22
+```
+
+推荐的实际快速回滚方式是关闭该终端并新开终端，避免残留环境变量。将上述命令原样保存在实施记录中。
+
+- [ ] **Step 2：写明文件级回滚命令，但成功时不执行**
+
+只有用户要求撤销或部署失败时才执行。执行前分别确认四个绝对路径仍位于批准目录，然后删除具体文件，不递归删除工作空间：
+
+```bash
+rm -- \
+  /home/sunrise/yiliao_ws/config/dds/fastdds_rdk_164.xml \
+  /home/sunrise/yiliao_ws/config/dds/use_rdk_dds_164.sh
+rmdir --ignore-fail-on-non-empty /home/sunrise/yiliao_ws/config/dds
+```
+
+```bash
+rm -- \
+  /home/hikos/Yiliao2026/config/dds/fastdds_wsl_151.xml \
+  /home/hikos/Yiliao2026/config/dds/use_wsl_dds_164_link.sh
+rmdir --ignore-fail-on-non-empty /home/hikos/Yiliao2026/config/dds
+```
+
+- [ ] **Step 3：最终范围核对**
+
+```bash
+git -C /home/sunrise/yiliao_ws status --short
+git -C /home/sunrise/yiliao_ws log -5 --oneline
+git -C /home/hikos/Yiliao2026 status --short
+git -C /home/hikos/Yiliao2026 log -3 --oneline
+```
+
+Expected：新提交只涉及四个 DDS 配置文件和本 Markdown；原有 dirty files 仍保持原状态，未被暂存、修改或清理。