DeepSeek Harness Plugin: 550C Boot Animation

DeepSeek Harness (DSH) adopts a plugin-based architecture that allows users to customize the startup experience. The dsh-550c-boot plugin is designed to address the limited visual variety during startup. It replicates the boot process of a 550C device, overrides the native Loading interface, and unifies the desktop’s native buttons under a consistent terminal color scheme.

Plugin Introduction¶

This plugin is maintained by developer yannicksong0106 and falls into the “Fun Skins” category. It works by injecting a specific first frame during DSH’s startup phase and playing a full-screen animation, thereby taking over the boot screen.

Core Features¶

1. Two levels: Supports both “Simple” and “Full” modes. The Simple mode lasts about 4 seconds and only displays the logo writing effect; the Full mode lasts about 16 seconds and shows the complete override flow.
2. Skip anytime: In Full mode, you can click the screen or press Esc to end the playback early.
3. Override the Loading card: The first frame is injected by the host side and occupies the screen before plugin evaluation, which hides DSH’s native Loading card.
4. Phosphor color schemes: Four built-in color schemes are included (amber, green, cyan, and white). The native buttons in the top-right corner of desktop windows can also be unified into the same color scheme.
5. Zero runtime dependencies: The plugin itself includes no external dependencies.

Installation and Enablement¶

To install it, run the following command:

dsh plugin --profile web add dsh-550c-boot

After installation, restart the DSH client for the plugin to take effect during startup.

Typical Usage¶

1. Switch the mode in Settings -> General -> 550C Boot Animation.
2. Click the “Preview” button to view the animation effect.
3. In Full mode, you can skip the playback by pressing Esc or clicking the screen during playback.

Applicable Scenarios and Notes¶

• Version requirement: Requires DSH version >=0.2.0-rc.1.
• Override timing: It can only overlay the full screen after the Web UI has loaded; it cannot be displayed before the initial blank frame of the Electron window.
• First-frame mechanism: The first frame is a solid-color placeholder, not an animation frame.
• Button limitations: The native desktop buttons can only change color and cannot be removed. On macOS, the top strip remains responsible for window dragging during playback.
• Playback frequency: The animation plays on every client load, including page refreshes. Duplicate playback suppression is not currently supported.

Conclusion¶

By injecting a first frame and overlaying a full-screen animation, this plugin adds a personalized boot experience to DSH. If you need a specific startup visual style, you can refer to its GitHub repository.