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

New Features:

• Introduce singleton metadata flag in the deepin-camera desktop entry to integrate with AM and Treeland behavior.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

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

File-Level Changes

Change	Details	Files
Mark the deepin-camera application as a singleton via its desktop entry.	Add X-Deepin-Singleton=true key to the desktop entry to declare the app as singleton. Ensure the key is placed alongside other desktop entry metadata so desktop environments and AM can parse it correctly.	src/deepin-camera.desktop

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[deepin-ci-robot]

deepin pr auto review

★ 总体评分：95分

■ 【总体评价】

代码正确添加了单例模式配置项，符合.desktop文件规范
逻辑正确且无安全风险，仅因配置文件无复杂逻辑给予95分

■ 【详细分析】

• 1.语法逻辑（完全正确）✓

新增的X-Deepin-Singleton=true配置项符合.desktop文件的INI格式规范，键值对格式无误。
潜在问题：无
建议：无需修改

• 2.代码质量（良好）✓

配置项命名遵循X-Deepin前缀规范，意图明确，表示应用以单例模式运行。
潜在问题：无
建议：无需修改

• 3.代码性能（无性能问题）✓

仅修改桌面配置文件，不涉及运行时性能逻辑。
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
本次修改仅为配置文件增加单例属性，不存在任何安全风险。

• 建议：无需安全修复

■ 【改进建议代码示例】

diff --git a/src/deepin-camera.desktop b/src/deepin-camera.desktop
index 52540910..42852547 100644
--- a/src/deepin-camera.desktop
+++ b/src/deepin-camera.desktop
@@ -10,6 +10,7 @@ Terminal=false
 Type=Application
 X-Deepin-TurboType=dtkwidget
 X-Deepin-Vendor=deepin
+X-Deepin-Singleton=true
 X-MultipleArgs=false
 
 # Translations:

[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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

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Details

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• debian/deepin/OWNERS

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