feat(wallpaper): support shader wallpaper sources

[mhduiy]

Add shader as a wallpaper source type and wire it through the wallpaper manager, notifier, persisted config, and wallpaper factory. Shader wallpapers are loaded from precompiled qsb packages and driven by a frame-synchronized clock so animation time follows actual rendered frames.

Extend the test wallpaper client to import .frag files by compiling them with qsb, caching shared shader packages under /tmp, and falling back to /usr/lib/qt6/bin/qsb when qsb is not in PATH. Add qt6-shader-baker as the examples runtime dependency.

Log: 支持导入并渲染 shader 动态壁纸

从长远来看，目前实现还有以下问题

1. 单纯的shader壁纸很难实现复杂壁纸，而且就算实现了，性能消耗太大
2. 不支持自定义纹理
3. 现在写死利用了shadertoy的规范进行输入，应该建立自有规范
4. 壁纸制作的成本比较高，不支持多个层级叠加效果

长远设想，或者是下一步打算

• 支持纯shader 壁纸
• 支持静态壁纸作为纹理，实现中
• 支持多layer
• 自研壁纸package
• 自研壁纸编辑器

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[mhduiy]

shaderBakeSource 还需修改

[zccrs]

Add shader as a wallpaper source type and wire it through the wallpaper manager, notifier, persisted config, and wallpaper factory. Shader wallpapers are loaded from precompiled qsb packages and driven by a frame-synchronized clock so animation time follows actual rendered frames.

Extend the test wallpaper client to import .frag files by compiling them with qsb, caching shared shader packages under /tmp, and falling back to /usr/lib/qt6/bin/qsb when qsb is not in PATH. Add qt6-shader-baker as the examples runtime dependency.

Log: 支持导入并渲染 shader 动态壁纸

从长远来看，目前实现还有以下问题

1. 单纯的shader壁纸很难实现复杂壁纸，而且就算实现了，性能消耗太大
2. 不支持自定义纹理
3. 现在写死利用了shadertoy的规范进行输入，应该建立自有规范
4. 壁纸制作的成本比较高，不支持多个层级叠加效果

长远设想，或者是下一步打算

• 支持纯shader 壁纸
• 支持静态壁纸作为纹理，实现中
• 支持多layer
• 自研壁纸package
• 自研壁纸编辑器

目标不要定义太复杂了，如果需要这么高级的定义能力，其实应该自己实现一个wallpaper程序代替默认的。

[mhduiy]

Add shader as a wallpaper source type and wire it through the wallpaper manager, notifier, persisted config, and wallpaper factory. Shader wallpapers are loaded from precompiled qsb packages and driven by a frame-synchronized clock so animation time follows actual rendered frames.
Extend the test wallpaper client to import .frag files by compiling them with qsb, caching shared shader packages under /tmp, and falling back to /usr/lib/qt6/bin/qsb when qsb is not in PATH. Add qt6-shader-baker as the examples runtime dependency.
Log: 支持导入并渲染 shader 动态壁纸

从长远来看，目前实现还有以下问题

1. 单纯的shader壁纸很难实现复杂壁纸，而且就算实现了，性能消耗太大
2. 不支持自定义纹理
3. 现在写死利用了shadertoy的规范进行输入，应该建立自有规范
4. 壁纸制作的成本比较高，不支持多个层级叠加效果

长远设想，或者是下一步打算

• 支持纯shader 壁纸
• 支持静态壁纸作为纹理，实现中
• 支持多layer
• 自研壁纸package
• 自研壁纸编辑器

目标不要定义太复杂了，如果需要这么高级的定义能力，其实应该自己实现一个wallpaper程序代替默认的。

嗯嗯，设想是做成一个类似于 Wallpaper Engine 的东西，但是确实一时半会实现不了。规范输入是有必要的，给设计壁纸的人提供通用接口。当前实现 shader 壁纸、自定义静态壁纸输入并且建立输入规范后重新打开此PR。