[add-uos]

fix: strip /sys prefix precisely in isPathExisted

1. Root cause: replace("/sys", "") replaced all occurrences of
   "/sys" substring in the path, not just the prefix, causing
   incorrect path matching when "/sys" appeared mid-path
2. Fix: use startsWith("/sys") to check prefix, then remove(0, 4)
   to strip only the leading "/sys" prefix
3. Impact: path matching now correctly strips only the prefix,
   no false matches on paths containing "/sys" elsewhere

fix: 精确剥离路径前缀 /sys

1. 根因：replace("/sys", "") 会替换路径中所有 "/sys" 子串，
   而非仅剥离前缀，导致路径中间含 "/sys" 时匹配错误
2. 方案：使用 startsWith("/sys") 判断前缀后 remove(0, 4)
   精确剥离路径开头的 "/sys" 前缀
3. 影响：路径匹配仅剥离前缀，不再误删路径中间的 "/sys" 子串

PMS: BUG-4

Summary by Sourcery

Bug Fixes:

• Ensure path existence checks remove only a leading "/sys" prefix, preventing incorrect matches when "/sys" appears elsewhere in a path.

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[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: add-uos

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[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Updates DeviceInfoManager::isPathExisted to strip /sys only when it is the leading prefix, preventing incorrect path matches caused by replacing /sys substrings elsewhere in the path.

Flow diagram for precise /sys prefix stripping

flowchart TD
    A["isPathExisted(path)"] --> B["Copy path to pathT"]
    B --> C{"pathT.startsWith(/sys)"}
    C -- Yes --> D["pathT.remove(0, 4)"]
    C -- No --> E["Keep pathT unchanged"]
    D --> F["hwinfo.contains(pathT)"]
    E --> F
    F --> G["Return exists"]

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File-Level Changes

Change	Details	Files
Make /sys normalization prefix-only before checking hardware-info path existence.	Initialize the match result explicitly. Check whether the input path begins with /sys. Remove exactly the leading four-character prefix before searching hwinfo. Preserve any /sys occurrences elsewhere in the path.	deepin-devicemanager-server/deepin-deviceinfo/src/loadinfo/deviceinfomanager.cpp

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