fix: add X-Deepin-Singleton flag to desktop file (#392841)

[add-uos]

Add X-Deepin-Singleton=true to desktop file to mark the application as a singleton app. This allows AM to identify singleton apps and inform Treeland to skip the splash screen for these apps.

Refs: https://pms.uniontech.com/task-view-392841.html

Summary by Sourcery

Enhancements:

• Add the X-Deepin-Singleton=true flag to the deepin-ocr desktop entry to identify it as a singleton application.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Adds the X-Deepin-Singleton flag to the deepin-ocr desktop entry so the application is treated as a singleton and its splash screen can be skipped by Treeland via AM integration.

File-Level Changes

Change	Details	Files
Declare the OCR application as a singleton via desktop entry metadata so AM/Treeland can skip its splash screen.	Add X-Deepin-Singleton=true key to the desktop file entry Ensure the new key is placed in the main application section alongside existing desktop metadata	deepin-ocr.desktop

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[sourcery-ai]

Hey - I've reviewed your changes and they look great!

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[deepin-ci-robot]

deepin pr auto review

★ 总体评分：100分

■ 【总体评价】

代码通过配置桌面环境单例属性有效解决了应用重复启动的问题
逻辑正确且符合规范，无安全漏洞

■ 【详细分析】

• 1.语法逻辑（完全正确）✓

在 deepin-ocr.desktop 文件中新增 X-Deepin-Singleton=true，符合 INI 格式规范，键值对书写正确
潜在问题：无
建议：无需修改

• 2.代码质量（符合规范）✓

配置项放置在 X-Deepin-Vendor 等其他 X-Deepin 扩展属性附近，位置合理，注释清晰
潜在问题：无
建议：无需修改

• 3.代码性能（无性能问题）✓

启用单例模式可避免用户多次点击图标时启动多个 deepin-ocr 进程，有效节省系统内存和 CPU 资源
潜在问题：无
建议：无需修改

• 4.代码安全（存在0个安全漏洞）✓

漏洞对比统计：新增漏洞 0 个，减少漏洞 0 个，持平 0 个
本次修改仅为 .desktop 文件的属性配置，不涉及任何外部输入处理、文件操作或网络通信，无安全风险

• 建议：无需修改

■ 【改进建议代码示例】

 NoDisplay=true
 X-Deepin-ManualID=deepin-ocr
 X-Deepin-Vendor=deepin
 X-Deepin-TurboType=dtkwidget
 X-Deepin-Singleton=true

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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

The full list of commands accepted by this bot can be found here.

Details

Needs approval from an approver in each of these files:

• debian/deepin/OWNERS

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